SLAS972B November   2014  – March 2016 AMC7834

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1  Absolute Maximum Ratings
    2. 6.2  ESD Ratings
    3. 6.3  Recommended Operating Conditions
    4. 6.4  Thermal Information
    5. 6.5  Electrical Characteristics—DAC Specifications
    6. 6.6  Electrical Characteristics—ADC, Current and Temperature Sensor Specifications
    7. 6.7  Electrical Characteristics—General Specifications
    8. 6.8  Serial Interface Timing Requirements
    9. 6.9  Switching Characteristics—DAC Specifications
    10. 6.10 Switching Characteristics—ADC, Current and Temperature Sensor Specifications
    11. 6.11 Switching Characteristics—General Specifications
    12. 6.12 Typical Characteristics
      1. 6.12.1 Typical Characteristics: DAC
      2. 6.12.2 Typical Characteristics: ADC
      3. 6.12.3 Typical Characteristics: Current Sense
      4. 6.12.4 Typical Characteristics: Temperature Sensor
      5. 6.12.5 Typical Characteristics: Reference
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Digital-to-Analog Converters (DACs)
        1. 7.3.1.1 DAC Configuration
          1. 7.3.1.1.1 Bipolar DACs (DAC1, DAC2, DAC3, and DAC4)
          2. 7.3.1.1.2 Auxiliary DACs (AUXDAC1, AUXDAC2, AUXDAC3, and AUXDAC4)
        2. 7.3.1.2 DAC Register Structure
        3. 7.3.1.3 DAC Clamp Operation
      2. 7.3.2 Analog-to-Digital Converter (ADC)
        1. 7.3.2.1 External Analog Inputs
        2. 7.3.2.2 Internal Bipolar DAC Monitoring Inputs
        3. 7.3.2.3 ADC Sequencing
      3. 7.3.3 Temperature Sensors
        1. 7.3.3.1 Internal Temperature Sensor
        2. 7.3.3.2 Remote Temperature Sensors
      4. 7.3.4 Current Sensors
      5. 7.3.5 Drain Switch Control
      6. 7.3.6 Programmable Out-of-Range Alarms
        1. 7.3.6.1 ADC Internal Monitoring Input Out-of-Range Alarm
        2. 7.3.6.2 Current-Sense Out-of-Range Alarm
        3. 7.3.6.3 Temperature Sensors Out-of-Range Alarm
        4. 7.3.6.4 Bipolar DACs High Alarm
        5. 7.3.6.5 AVSS Detection Alarm
        6. 7.3.6.6 AVDD Detection Alarm
        7. 7.3.6.7 Hysteresis
        8. 7.3.6.8 False-Alarm Protection
      7. 7.3.7 Reference Specifications
        1. 7.3.7.1 Internal Reference Operation
        2. 7.3.7.2 External Reference Operation
      8. 7.3.8 General Purpose I/Os
    4. 7.4 Device Functional Modes
      1. 7.4.1 Open-Loop Mode
      2. 7.4.2 Closed-Loop Mode
    5. 7.5 Programming
    6. 7.6 Register Maps
      1. 7.6.1  Power Mode: Address 0x02
        1. 7.6.1.1 Power Mode Register (address = 0x02) [reset = 0x000]
      2. 7.6.2  Device Identification: Address 0x04 through 0x0C
        1. 7.6.2.1 Device ID Register (address = 0x04) [reset = 0x0C34]
        2. 7.6.2.2 Version ID Register (address = 0x06) [reset = 0x0001]
        3. 7.6.2.3 Vendor ID Register (address = 0x0C) [reset = 0x0451]
      3. 7.6.3  General Device Configuration: Address 0x10 through 0x16
        1. 7.6.3.1 AMC Configuration 0 Register (address = 0x10) [reset = 0x0300]
        2. 7.6.3.2 AMC Configuration 1 Register (address = 0x11) [reset = 0x036A]
        3. 7.6.3.3 ADC MUX Register (address = 0x12) [reset = 0x0000]
        4. 7.6.3.4 Closed Loop Settling Time Register (address = 0x14) [reset = 0x2222]
        5. 7.6.3.5 DAC Sync Register (address = 0x15) [reset = 0x0000]
        6. 7.6.3.6 DAC Range Register (address = 0x16) [reset = 0x0000]
      4. 7.6.4  Clamp and Alarm Configuration: Address 0x17 through 0x1B
        1. 7.6.4.1 CLAMP Configuration Register (address = 0x17) [reset = 0x003F]
        2. 7.6.4.2 SLEEP1 Configuration Register (address = 0x18) [reset = 0xFF00]
        3. 7.6.4.3 SLEEP2 Configuration Register (address = 0x19) [reset = 0xFF00]
        4. 7.6.4.4 ALARMOUT Clamp Register (address = 0x1A) [reset = 0x0000]
        5. 7.6.4.5 ALARMOUT Configuration Register (address = 0x1B) [reset = 0x0000]
      5. 7.6.5  Conversion Trigger: Address 0x1C
        1. 7.6.5.1 DAC and ADC Trigger Register (address = 0x1C) [reset = 0x0000]
      6. 7.6.6  Reset: Address 0x1D
        1. 7.6.6.1 Software Reset Register (address = 0x1D) [reset = 0x0000]
      7. 7.6.7  Device Status: Address 0x1E and 0x1F
        1. 7.6.7.1 Alarm Status Register (address = 0x1E) [reset = 0x0000]
        2. 7.6.7.2 General Status Register (address = 0x1F) [reset = 0x0000]
      8. 7.6.8  ADC Data: Address 0x20 through 0x2F
        1. 7.6.8.1 ADCn-Internal-Data Register (address = 0x20 to 0x23) [reset = 0x0000]
        2. 7.6.8.2 ADCn-External-Data Register (address = 0x24 to 0x27) [reset = 0x0000]
        3. 7.6.8.3 CSn-Data Register (address = 0x28 to 0x2B) [reset = 0x0000]
        4. 7.6.8.4 LT-Data Register (address = 0x2D) [reset = 0x0000]
        5. 7.6.8.5 RTn-Data Register (address = 0x2E to 0x2F) [reset = 0x0000]
      9. 7.6.9  DAC Data: Address 0x30 through 0x37
        1. 7.6.9.1 DACn-Data Register (address = 0x30 to 0x33) [reset = 0x0000]
        2. 7.6.9.2 AUXDACn-Data Register (address = 0x34 to 0x37) [reset = 0x0000]
      10. 7.6.10 Closed-Loop Control: Address 0x38 through 0x3B
        1. 7.6.10.1 ClosedLoopn Register (address = 0x38 to 0x3B) [reset = 0x0000]
      11. 7.6.11 Alarm Threshold Configuration: Address 0x40 through 0x4F
        1. 7.6.11.1 ADCINTn/CSn-Upper-Threshold Register (address = 0x40, 0x42, 0x44 and 0x46) [reset = 0x0FFF]
        2. 7.6.11.2 ADCINTn/CSn-Lower-Threshold Register (address = 0x41, 0x43, 0x45 and 0x47) [reset = 0x0000]
        3. 7.6.11.3 TS-Upper-Threshold Register (address = 0x48, 0x4A and 0x4C) [reset = 0x07FF]
        4. 7.6.11.4 TS-Lower-Threshold Register (address = 0x49, 0x4B and 0x4D) [reset = 0x0800]
        5. 7.6.11.5 DACnn-Upper-Threshold Register (address = 0x4E and 0x4F) [reset = 0x0FFF]
      12. 7.6.12 Alarm Hysteresis Configuration: Address 0x50 and 0x56
        1. 7.6.12.1 ADCINTn/CSn-Hysteresis Register (address = 0x50 to 0x53) [reset = 0x0008]
        2. 7.6.12.2 LT-Hysteresis Register (address = 0x54) [reset = 0x0008]
        3. 7.6.12.3 RTn-Hysteresis Register (address = 0x55 to 0x56) [reset = 0x0008]
      13. 7.6.13 GPIO: Address 0x58
        1. 7.6.13.1 GPIO Register (address = 0x58) [reset = 0x000F]
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 ADC Input Conditioning
        2. 8.2.2.2 DAC Output Range Selection
        3. 8.2.2.3 Temperature Sensing Applications
        4. 8.2.2.4 Current Sensing Applications
      3. 8.2.3 Application Performance Curve
    3. 8.3 Initialization Set Up
      1. 8.3.1 Initialization Procedure
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
Supply voltage AVDD to GND –0.3 6 V
DVDD to GND –0.3 6
IOVDD to GND –0.3 6
AVCC to GND –0.3 13
AVSS to GND –6 0.3
PAVDD to AVSS –0.3 26
DGND to AGND –0.3 0.3
Pin voltage ADC analog input voltage to GND –0.3 AVDD + 0.3 V
Current sense input voltage to GND –0.3 65
Bipolar DAC outputs to GND AVSS – 0.3 AVDD + 0.3
Auxiliary DAC outputs to GND –0.3 AVCC + 0.3
VCLAMP1, VCLAMP2 inputs to GND –0.3 AVDD + 0.3
D1+, D1–, D2+ and D2– to GND –0.3 AVDD + 0.3
REF_CMP, REF_IN to GND –0.3 AVDD + 0.3
REF_OUT to GND –0.3 AVDD + 0.3
PA_ON to GND –0.3 PAVDD + 0.3
CS, SCLK, SDI, DACTRIG, RESET, SLEEP1, SLEEP2 and DAV/ADC_RDY to GND –0.3 IOVDD + 0.3
SDO to GND –0.3 IOVDD + 0.3
GPIOs, ALARMOUT to GND –0.3 6
Pin current ADC analog input current –10 10 mA
REF_OUT output current –0.3 0.3
GPIOs, ALARMOUT sinking current 5
Operating temperature range –40 125 °C
Junction temperature range, TJ max –40 150 °C
Storage temperature, Tstg –40 150 °C
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±750 V
Charged device model (CDM), per JEDEC specification JESD22-C101(2) ±250
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
Supply voltage AVDD(1) 4.5 5 5.5 V
DVDD(1) 4.5 5 5.5
IOVDD 1.7 3.3 3.6
AVCC 4.5 5 12.5
AVSS(2) –5.5 –5 0
PAVDD 4 5 20
Specified performance temperature –40 25 105 °C
Operating temperature –40 25 125 °C
(1) The value of the DVDD pin must be equal to that of the AVDD pins.
(2) The value of the AVSS pin is only equal to AGND when all bipolar DACs are set to operate in positive voltage ranges.

6.4 Thermal Information

THERMAL METRIC(1)(2) RTQ (VQFN) UNIT
56 PINS
RθJA Junction-to-ambient thermal resistance 24.7 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 7.9
RθJB Junction-to-board thermal resistance 2.7
ψJT Junction-to-top characterization parameter 0.2
ψJB Junction-to-board characterization parameter 2.7
RθJC(bot) Junction-to-case (bottom) thermal resistance 0.3
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
(2) TI strongly recommends to solder the device thermal pad to a board plane connected to the AVSS pin.

6.5 Electrical Characteristics—DAC Specifications

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. AVDD = DVDD = 5 V, AVCC = 5 V, AVSS = –5 V, IOVDD = 3.3 V, PAVDD = 5 V, AGND = DGND = 0 V, external 2.5 V reference, DAC output range = 0 to 5 V for all DACs, no load on the DACs, current sense inputs common mode at 48 V, TA = –40°C to +105°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
BIPOLAR DAC DC ACCURACY
Resolution 12 Bits
INL Relative accuracy Measured by line passing through codes 040h and FC0h. 0 to 5 V range ±0.3 ±1 LSB
Measured by line passing through codes 040h and FC0h. –4 to 1 V and –5 to 0 V ranges ±0.3 ±1
DNL Differential nonlinearity Specified monotonic. Measured by line passing through codes 040h and FC0h. 0 to 5 V range ±0.05 ±1 LSB
Specified monotonic. Measured by line passing through codes 040h and FC0h. –4 to 1 V and –5 to 0 V ranges ±0.05 ±1
TUE Total unadjusted error TA = 25°C, 0 to 5 V range ±1 ±15 mV
TA = 25°C, –4 to 1 V and –5 to 0 V ranges ±2 ±15
Offset error TA = 25°C. Measured by line passing through codes 040h and FC0h. 0 to 5 V range ±0.2 ±10 mV
Zero-code error TA = 25°C. Code 000h. –4 to 1 V and –5 to 0 V ranges. AVSS = –5.5 V ±2 ±10 mV
Gain error TA = 25°C. Measured by line passing through codes 040h and FC0h. 0 to 5 V range ±0.02 ±0.2 %FSR
TA = 25°C. Measured by line passing through codes 040h and FC0h. –4 to 1 V and –5 to 0 V ranges ±0.02 ±0.2
Offset temperature drift 0 to 5 V range ±1 ppm/°C
Zero-code temperature drift –4 to 1 V and –5 to 0 V ranges. AVSS = –5.5 V ±1.5 ppm/°C
Gain temperature drift All output ranges ±1 ppm/°C
AUXILIARY DAC DC ACCURACY
Resolution 12 Bits
INL Integral nonlinearity Measured by line passing through codes 040h and FC0h. 0 to 5 V range ±0.5 ±1.25 LSB
Measured by line passing through codes 040h and FC0h. 2.5 to 7.5 V range. AVCC = 12 V ±0.5 ±1.25
DNL Differential nonlinearity Specified monotonic. Measured by line passing through codes 040h and FC0h. 0 to 5 V range ±0.05 ±1 LSB
Specified monotonic. Measured by line passing through codes 040h and FC0h. 2.5 to 7.5 V range. AVCC = 12 V ±0.05 ±1
TUE Total unadjusted error TA = 25°C. 0 to 5 V range ±2 ±15 mV
TA = 25°C. 2.5 to 7.5 V range. AVCC = 12 V ±2 ±15
Offset error TA = 25°C. Measured by line passing through codes 040h and FC0h. 0 to 5 V range ±0.3 ±10 mV
TA = 25°C. Measured by line passing through codes 040h and FC0h. 2.5 to 7.5 V range. AVCC = 12 V ±1 ±10
Gain error TA = 25°C. Measured by line passing through codes 040h and FC0h. 0 to 5 V range ±0.03 ±0.2 %FSR
TA = 25°C. Measured by line passing through codes 040h and FC0h. 2.5 to 7.5 V range. AVCC = 12 V ±0.03 ±0.2
Offset temperature drift All output ranges ±1 ppm/°C
Gain temperature drift All output ranges ±1 ppm/°C
DAC OUTPUT CHARACTERISTICS
Bipolar DAC range(1) DACn_range set to 00 –4 1 V
DACn_range set to 01 –5 0
DACn_range set to 10 –5 0
DACn_range set to 11 0 5
Auxiliary DAC range(2) AUXDACn_range set to 0 0 5 V
AUXDACn_range set to 1 2.5 7.5
Short-circuit current Bipolar DACs: Full-scale current shorted to AVSS or AVDD
Auxiliary DACs: Full-scale current shorted to AGND or AVCC 		45 mA
Load current(3) Bipolar DACs: Source or sink with 300 mV headroom from AVDD or AVSS, voltage drop < 25 mV
Auxiliary DACs: Source or sink with 300 mV headroom from AVCC or AGND, voltage drop < 25 mV		 ±10 mA
Maximum capacitive load(4) All DAC outputs. RL = ∞ 0 10 nF
DC output impedance All DAC outputs. Code set to 800h, ±10 mA 1 Ω
Glitch energy All DAC outputs. Transition: Code 7FFh to 800h; 800h to 7FFh 1 nV-s
Output noise Auxiliary DACs. 1 kHz, code 800h 200 nV/√Hz
Bipolar DACs. 1 kHz, code 800h 100
Auxiliary DACs. Integrated noise from 0.1 Hz to 10 Hz, code 800h 20 µVPP
Bipolar DACs. Integrated noise from 0.1 Hz to 10 Hz, code 800h 10
CLAMP OUTPUT MODE
VCLAMP [1:2] voltage range 0 –AVSS / 3 V
VCLAMP [1:2] input current ±0.5 µA
Clamp output voltage Bipolar DACs. Clamp voltage = –3 × VCLAMP[1:2] AVSS 0 V
Auxiliary DACs AGND
Clamp output current Bipolar DACs. Source, sink, or both with 300-mV headroom from AVSS, voltage drop < 25 mV ±10 mA
Clamp pull-down resistance Auxiliary DACs. Measured to AGND 9 kΩ
Bipolar DACs. VCLAMP buffers inactive (AVSS clamp mode). Measured to AVSS 550 Ω
(1) The output voltage must not be greater than AVDD or lower than AVSS. A minimum of 100 mV headroom from AVDD is required.
(2) The output voltage must not be greater than AVCC or lower than AGND. A minimum of 100 mV headroom from AVCC is required.
(3) If all channels are simultaneously loaded, care must be taken to ensure the thermal conditions for the device are not exceeded.
(4) To be sampled during initial release to ensure compliance; not subject to production testing.

6.6 Electrical Characteristics—ADC, Current and Temperature Sensor Specifications

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. AVDD = DVDD = 5 V, AVCC = 5 V, AVSS = –5 V, IOVDD = 1.8 to 3.3 V, PAVDD = 5 V, AGND = DGND = 0 V, external 2.5 V reference, DAC output range = 0 to 5 V for all DACs, no load on the DACs, current sense inputs common mode at 48 V, TA = –40°C to +105°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
EXTERNAL ANALOG INPUTS (ADC1, ADC2, ADC3 and ADC4)
Resolution 12 Bits
INL Integral nonlinearity ±0.5 ±1 LSB
DNL Differential nonlinearity Specified monotonic ±0.5 ±1 LSB
Offset error ±0.3 ±4.5 LSB
Offset error match ±1 LSB
Gain error ±0.3 ±4 LSB
Gain error match ±1 LSB
Full-scale input range(1) 0 Vref V
Input capacitance 48 pF
DC-input leakage current Unselected ADC input ±2 µA
INTERNAL MONITORING INPUTS (BIPOLAR DAC-OUTPUT MONITORING)
Full scale input range(1) –5 2.5 V
Resolution LSB size 1.83 mV
CURRENT-SENSE INPUTS
Common mode voltage 4 60 V
Full scale sense voltage(1) SENSEn+ – SENSEn- 0 200 mV
Input resistance Per current sense input terminal 192 kΩ
Gain accuracy ±0.1% ±1%
Input offset error CS-FILTER[2:0] = 100
Common mode voltage = 4 V		 ±50 ±500 µV
CMRR CS-FILTER[2:0] = 100 80 dB
Resolution LSB size 48.83 µV
TEMPERATURE SENSOR: INTERNAL
Operating range(1)(2) Specified monotonic over entire range. –55 125 °C
Accuracy(2) TJ = –40°C to 125°C ±3 °C
Resolution LSB size
TJ = –40°C to 125°C 		0.25 °C
TEMPERATURE SENSOR: EXTERNAL (USING 2N3906 EXTERNAL TRANSISTOR)
Operating range(1)(2) –55 150 °C
Accuracy(2) RT-SET[2:0] = 011, CS-FILTER[2:0] = 100
TA = –40°C to 125°C, T(DIODE) = –40°C to 150°C 		±3 °C
Resolution LSB size
TA = –40°C to 125°C, T(DIODE) = –40°C to 150°C		 0.25 °C
(1) Input range for all monitoring inputs must be met for accuracy specifications to apply.
(2) Not tested during production. Specified by design and characterization.

6.7 Electrical Characteristics—General Specifications

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. AVDD = DVDD = 5 V, AVCC = 5 V, AVSS = –5 V, IOVDD = 1.8 to 3.3 V, PAVDD = 5 V, AGND = DGND = 0 V, external 2.5 V reference, DAC output range = 0 to 5 V for all DACs, no load on the DACs, current sense inputs common mode at 48 V, TA = –40°C to 105°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
EXTERNAL REFERENCE INPUT
VREF_IN Input voltage range REF_IN pin 2.5 V
Input current VREF_IN = 2.5 V 1 100 µA
DAC reference buffer offset TA = 25°C ±5 mV
ADC reference buffer offset TA = 25°C ±5 mV
INTERNAL REFERENCE
Output voltage TA = 25°C, REF_OUT pin 2.4925 2.5 2.5075 V
Reference temperature coefficient 10 35 ppm/°C
Output voltage noise 1 kHz 260 nV/√Hz
Integrated noise from 0.1 Hz to 10 Hz 13 µVPP
PA_ON OUTPUT
PA_ON output voltage PAVDD ≤ 20 V AGND PAVDD V
SUPPLY ALARMS(1)
AVSS alarm threshold –4.4 –4.1 –3.8 V
AVDD alarm threshold 3.4 3.9 4.4 V
DIGITAL LOGIC(1)
VIH High-level input voltage IOVDD = 1.7 V to 3.6 V 0.7 × IOVDD V
VIL Low-level input voltage IOVDD = 1.7 V to 3.6 V 0.3 × IOVDD V
Vhys Hysteresis voltage IOVDD = 1.7 V to 3.6 V 0.1 × IOVDD V
VOH High-level output voltage SDO and DAV/ADC_RDY. IOVDD = 1.7 V, I(LOAD) = 1 mA IOVDD – 0.4 V
VOL Low-level output voltage IOVDD = 1.7 V to 3.6 V, I(LOAD) = –1 mA 0.4 V
High impedance leakage ±0.5 µA
High impedance output capacitance 10 pF
POWER REQUIREMENTS
IAVDD AVDD supply current POWER-MODE = 10.
AVDD = DVDD = 5.5 V, AVCC = 5.5 V
PAVDD = 20 V, AVSS = –5.5 V, IOVDD = 3.6 V
All monitoring channels enabled
Bipolar DACs in –5 to 0 V range
Auxiliary DACs in 0 to 5 V range
All DACs at 800h code. PA_ON in "ON" state		 10 12.5 mA
IAVCC AVCC supply current 1.5 2 mA
IAVSS AVSS supply current –3.5 –2.5 mA
IDVDD DVDD supply current 2.5 3 mA
IIOVDD IOVDD supply current 1.75 2.5 µA
IPAVDD PAVDD supply current 170 250 µA
Power consumption 95 120.5 mW
IAVDD AVDD supply current POWER-MODE = 00.
AVDD = DVDD = 5.5 V, AVCC = 5.5 V
PAVDD = 20 V, AVSS = –5.5 V, IOVDD = 3.6 V
All DACs in clamp mode at 0 V
PA_ON in "OFF" state		 3.5 mA
IAVCC AVCC supply current 0.2 mA
IAVSS AVSS supply current –2 mA
IDVDD DVDD supply current 2.5 mA
IIOVDD IOVDD supply current 1.75 µA
IPAVDD PAVDD supply current 12 µA
Power consumption 45 mW
(1) Not tested during production. Specified by design and characterization.

6.8 Serial Interface Timing Requirements(1)(2)

AVDD = DVDD = 5 V, AVCC = 5 V, AVSS = –5 V, PAVDD = 5 V, AGND = DGND = 0 V, external 2.5 V reference, DAC output range = 0 to 5 V for all DACs, no load on the DACs, current sense inputs common mode at 48 V, TA = –40°C to +105°C (unless otherwise noted)
IOVDD = 1.7 TO 2.7 V IOVDD = 2.7 TO 3.6 V UNIT
MIN MAX MIN MAX
fSCLK SCLK frequency 0.2 10 0.2 15 MHz
tp SCLK period See Figure 1 and Figure 2. 100 66.67 ns
tPH SCLK pulse width high 40 26 ns
tPL SCLK pulse width low 40 26 ns
tsu SDI setup 10 10 ns
th SDI hold 10 10 ns
t(ODZ) SDO driven to tri-state See Figure 2. 0 15 0 10 ns
t(OZD) SDO tri-state to driven 0 20 0 15 ns
t(OD) SDO output delay 0 20 0 15 ns
tsu(CS) CS setup See Figure 1 and Figure 2 5 5 ns
th(CS) CS hold 20 20 ns
t(IAG) Inter-access gap 15 15 ns
(1) Specified by design and characterization. Not tested during production.
(2) SDO loaded with 10 pF load capacitance for SDO timing specifications.

6.9 Switching Characteristics—DAC Specifications

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. AVDD = DVDD = 5 V, AVCC = 5 V, AVSS = –5 V, IOVDD = 3.3 V, PAVDD = 5 V, AGND = DGND = 0 V, external 2.5 V reference, DAC output range = 0 to 5 V for all DACs, no load on the DACs, current sense inputs common mode at 48 V, TA = –40°C to +105°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
DAC OUTPUT CHARACTERISTICS
Output voltage settling time Transition: Code 400h to C00h to within ½ LSB.
RL= 2 kΩ, CL = 200 pF. All DAC outputs. All output ranges		 10 µs
Slew rate Transition: Code 400h to C00h, 10% to 90%.
RL= 2 kΩ, CL = 200 pF. All DAC outputs. All output ranges		 1.25 V/µs
CLAMP OUTPUT MODE
Clamp shutdown delay(1) All DAC outputs. RL = ∞, CL = 200 pF, clamp from 3.5 V output, within 10% accuracy of active DAC output, measured from SLEEP 0 to 1 transition 5 µs
Wake-up from clamp delay(1) All DAC outputs. RL = ∞, CL = 200 pF, wake-up to 3.5 V output, within 10% accuracy of active DAC output, measured from SLEEP 1 to 0 transition 5 µs
(1) Not tested during production. Specified by design and characterization.

6.10 Switching Characteristics—ADC, Current and Temperature Sensor Specifications

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. AVDD = DVDD = 5 V, AVCC = 5 V, AVSS = –5 V, IOVDD = 1.8 to 3.3 V, PAVDD = 5 V, AGND = DGND = 0 V, external 2.5 V reference, DAC output range = 0 to 5 V for all DACs, no load on the DACs, current sense inputs common mode at 48 V, TA = –40°C to +105°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
ADC INTERNAL OSCILLATOR
Internal oscillator frequency 3.7 4 4.3 MHz
EXTERNAL ANALOG INPUTS (ADC1, ADC2, ADC3 and ADC4)
Update time All four external inputs enabled
Internal monitoring inputs disabled		 1 ms
INTERNAL MONITORING INPUTS (BIPOLAR DAC-OUTPUT MONITORING)
Update time All four internal monitoring inputs enabled
External analog inputs disabled		 1 ms
CURRENT-SENSE INPUTS
Update time All four current sense inputs enabled
CS-FILTER[2:0] = 000 		200 µs
TEMPERATURE SENSOR: INTERNAL
Update time Remote temperature sensors disabled 2 ms
TEMPERATURE SENSOR: EXTERNAL (USING 2N3906 EXTERNAL TRANSISTOR)
Update time Single external temperature sensor
Internal temperature sensor disabled
RT-SET[2:0] = 000		 8 ms

6.11 Switching Characteristics—General Specifications

The electrical ratings specified in this section apply to all specifications in this document, unless otherwise noted. These specifications are interpreted as conditions that do not degrade the device parametric or functional specifications for the life of the product containing it. AVDD = DVDD = 5 V, AVCC = 5 V, AVSS = –5 V, IOVDD = 1.8 to 3.3 V, PAVDD = 5 V, AGND = DGND = 0 V, external 2.5 V reference, DAC output range = 0 to 5 V for all DACs, no load on the DACs, current sense inputs common mode at 48 V, TA = –40°C to 105°C
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
PA_ON OUTPUT(1)
PA_ON OFF state enable Measured from AVSS alarm event, CL = 1 nF 1 ms
Measured from SLEEP 0 to 1 transition, CL = 1 nF 1 ms
PA_ON ON state enable Measured from SLEEP 1 to 0 transition, CL = 1 nF 0.5 ms
RESET REQUIREMENTS(1)
Reset delay Delay to normal operation from hardware reset 100 250 µs
Delay to normal operation from software reset 10 µs
Reset pulse width 20 ns
(1) Not tested during production. Specified by design and characterization.
AMC7834 td_spi_write_slas972.gif Figure 1. Serial Interface Write Timing Diagram
AMC7834 td_spi_read_slas972.gif Figure 2. Serial Interface Read Timing Diagram

6.12 Typical Characteristics

6.12.1 Typical Characteristics: DAC

AMC7834 C001_SLAS972A.png
DAC range = 0 to 5 V, AVDD = 5.5 V
Figure 3. Bipolar DAC Integral Non-Linearity
AMC7834 C003_SLAS972A.png
DAC range = –5 to 0 V, AVSS = –5.5 V
Figure 5. Bipolar DAC Integral Non-Linearity
AMC7834 C005_SLAS972A.png
DAC range = 0 to 5 V, AVCC = 5.5 V
Figure 7. Auxiliary DAC Integral Non-Linearity
AMC7834 C007_SLAS972A.png
DAC range = 2.5 to 7.5 V, AVCC = 12 V
Figure 9. Auxiliary DAC Integral Non-Linearity
AMC7834 C009_SLAS972A.png
DAC range = 0 to 5 V, AVDD = 5.5 V
Figure 11. Bipolar DAC INL vs Temperature
AMC7834 C011_SLAS972A.png
DAC range = –5 to 0 V, AVSS = –5.5 V
Figure 13. Bipolar DAC INL vs Temperature
AMC7834 C013_SLAS972A.png
DAC range = 0 to 5 V, AVCC = 5.5 V
Figure 15. Auxiliary DAC INL vs Temperature
AMC7834 C015_SLAS972A.png
DAC range = 2.5 to 7.5 V, AVCC = 12 V
Figure 17. Auxiliary DAC INL vs Temperature
AMC7834 C017_SLAS972A.png
DAC range = 0 to 5 V
Figure 19. Bipolar DAC Offset Error vs Temperature
AMC7834 C019_SLAS972A.png
AVDD = 5.5 V, AVSS = –5.5 V
Figure 21. Bipolar DAC Gain Error vs Temperature
AMC7834 C021_SLAS972A.png
DAC range = 0 to 5 V, Code 0xFFF
Figure 23. DAC Source Current
AMC7834 C023_SLAS972A.png
Code 0x000 to 0xFFF to within 0.5% of final value
Figure 25. DAC Settling Time
AMC7834 C025_SLAS72A.png
Bipolar DAC, Code 0x800
Figure 27. DAC Noise Voltage vs Frequency
AMC7834 C041_SLAS972A.png
DAC range: –4 to 1 V, Code 0x800
Figure 29. Response to AVDD Supply Collapse
AMC7834 C002_SLAS972A.png
DAC range = 0 to 5 V, AVDD = 5.5 V
Figure 4. Bipolar DAC Differential Non-Linearity
AMC7834 C004_SLAS972A.png
DAC range = –5 to 0 V, AVSS = –5.5 V
Figure 6. Bipolar DAC Differential Non-Linearity
AMC7834 C006_SLAS972A.png
DAC range = 0 to 5 V, AVCC = 5.5 V
Figure 8. Auxiliary DAC Differential Non-Linearity
AMC7834 C008_SLAS972A.png
DAC range = 2.5 to 7.5 V, AVCC = 12 V
Figure 10. Auxiliary DAC Differential Non-Linearity
AMC7834 C010_SLAS972A.png
DAC range = 0 to 5 V, AVDD = 5.5 V
Figure 12. Bipolar DAC DNL vs Temperature
AMC7834 C012_SLAS972A.png
DAC range = –5 to 0 V, AVSS = –5.5 V
Figure 14. Bipolar DAC DNL vs Temperature
AMC7834 C014_SLAS972A.png
DAC range = 0 to 5 V, AVCC = 5.5 V
Figure 16. Auxiliary DAC DNL vs Temperature
AMC7834 C016_SLAS972A.png
DAC range = 2.5 to 7.5 V, AVCC = 12 V
Figure 18. Auxiliary DAC DNL vs Temperature
AMC7834 C018_SLAS972A.png
AVSS = –5.5 V
Figure 20. Bipolar DAC Zero Code Error vs Temperature
AMC7834 C020_SLAS972A.png
DAC range = 0 to 5 V, Code 0x800
Figure 22. DAC Output Voltage vs Load Current
AMC7834 C022_SLAS972A.png
DAC range = 0 to 5 V, Code 0x000, AVSS = 0 V
Figure 24. DAC Sink Current
AMC7834 C024_AMC7834.png
Code 0x800
Figure 26. DAC Output Noise, 0.1 Hz to 10 Hz
AMC7834 C039_SLAS972A.png
DAC range: –5 to 0 V, Code 0x800
Figure 28. PA_ON Response to AVSS Supply Collapse
AMC7834 C040_SLAS972A.png
DAC range: –4 to 1 V, VCLAMP[1:2] = 4/3 V
Figure 30. DAC Power On

6.12.2 Typical Characteristics: ADC

AMC7834 C026_SLAS972A.png
Figure 31. ADC INL
AMC7834 C028_SLAS972A.png
Figure 33. ADC INL vs Temperature
AMC7834 C030_SLAS972A.png
Figure 35. ADC Offset Error vs Temperature
AMC7834 C027_SLAS972A.png
Figure 32. ADC DNL
AMC7834 C029_SLAS972A.png
Figure 34. ADC DNL vs Temperature
AMC7834 C031_SLAS972A.png
Figure 36. ADC Gain Error vs Temperature

6.12.3 Typical Characteristics: Current Sense

AMC7834 C032_SLAS972A.png
VCM = 28 V, VSENSE = 0 V, CS-FILTER[2:0] = 100
Figure 37. Current Sense Offset Voltage vs Temperature
AMC7834 C034_SLAS972A.png
Figure 39. Current Sense Gain Error vs Common-Mode Voltage
AMC7834 C033_SLAS972A.png
VCM = 28 V
Figure 38. Current Sense Gain Error vs Temperature
AMC7834 C035_SLAS972A.png
CS-FILTER[2:0] = 100
Figure 40. Current Sense CMRR vs Frequency

6.12.4 Typical Characteristics: Temperature Sensor

AMC7834 C036_SLAS972A.png
10 units
Figure 41. Local Temperature Sensor Error vs Temperature
AMC7834 C037_SLAS972A.png
10 units, T(DIODE) = 25°C, RT-SET[2:0] = 011
Figure 42. Remote Temperature Sensor Error vs Temperature

6.12.5 Typical Characteristics: Reference

AMC7834 C038_SLAS972A.png
10 units
Figure 43. Reference Output Voltage vs Temperature