SNAS513F August   2011  – November 2015 LM48560

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 Electrical Characteristics VDD = 3.6 V
    5. 6.5 I2C Interface Characteristics
    6. 6.6 Typical Characteristics
  7. 7 Parameter Measurement Information
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 General Amplifier Function
      2. 8.3.2 Class H Operation
      3. 8.3.3 Differential Amplifier Explanation
      4. 8.3.4 Automatic Level Control (ALC)
      5. 8.3.5 Attack Time
      6. 8.3.6 Release Time
      7. 8.3.7 Boost Converter
      8. 8.3.8 Gain Setting
      9. 8.3.9 Shutdown Function
    4. 8.4 Device Functional Modes
      1. 8.4.1 Software or Hardware Mode
      2. 8.4.2 Single-Ended Input Configuration
    5. 8.5 Programming
      1. 8.5.1 Read/Write I2C Compatible Interface
      2. 8.5.2 Write Sequence
      3. 8.5.3 Read Sequence
    6. 8.6 Register Maps
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Proper Selection of External Components
          1. 9.2.2.1.1 ALC Timing (CSET) Capacitor Selection
          2. 9.2.2.1.2 Power Selection of External Components
          3. 9.2.2.1.3 Boost Converter Capacitor Selection
          4. 9.2.2.1.4 Inductor Selection
          5. 9.2.2.1.5 Diode Selection
      3. 9.2.3 Application Curve
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Community Resources
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

6 Specifications

6.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)(1)
MIN MAX UNIT
VDD Supply voltage(2) 6 V
SW Voltage 25 V
VBST Voltage 21 V
Input voltage –0.3 VDD 0.3 V
Power dissipation(3) Internally limited
TJ Junction temperature 150 °C
Tstg Storage temperature –65 150 °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.
(2) All voltages are measured with respect to the ground pin, unless otherwise specified.
(3) The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX, θJA, and the ambient temperature, TA. The maximum allowable power dissipation is PDMAX = (TJMAX –TA) / θJA or the given in Absolute Maximum Ratings, whichever is lower.

6.2 ESD Ratings

VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001(1) ±2000 V
Charged-device model (CDM), per JEDEC specification JESD22-C101(2) ±500
Machine Model(3) ±100
(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.
(3) Machine model, applicable std. JESD22-A115-A.

6.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)
MIN NOM MAX UNIT
TA Operating free-air temperature –40 85 °C
VDD Supply voltage 2.7 5.5 V

6.4 Electrical Characteristics VDD = 3.6 V

The following specifications apply for RL = 1.5 μF + 10 Ω, CBST = 1 μF, CIN = 0.47 μF, CSET = 100 nF, AV = 24 dB unless otherwise specified. Limits apply for TA = 25 °C.(2)(1)
PARAMETER TEST CONDITIONS MIN (1) TYP (2) MAX (1) UNIT
VDD Supply voltage 2.7 5.5 V
IDD Quiescent power supply current VIN = 0 V, RL = ∞
ALC Enabled 4 6 mA
ALC Disabled 3.6 mA
PD Power consumption VOUT = 25 VP-P, f = 1 kHz 1 W
ISD Shutdown current Software Mode 2.5 4.4 µA
Hardware Mode 0.1 2 µA
TWU Wake-up time From Shutdown 15 ms
VOS Differential output offset voltage AV = 24 V 10 90 mV
AV = 0 dB (Boost Disabled) 5 20 mV
AV Gain (Hardware Mode) IN1 GAIN = 0 0.5 0 0.5 dB
GAIN = 1 5.5 6 6.5
IN2 GAIN = 0 23.5 24 24.5
GAIN = 1 29.5 30 30.5
Gain (software mode) Boost Disabled GAIN1 = 0, GAIN0 = 0 –0.5 0 0.5 dB
GAIN1 = 0, GAIN0 = 1 5.5 6 6.5
GAIN1 = 1, GAIN0 = 0 11.5 12 12.5
GAIN1 = 1, GAIN0 = 1 17.5 18 18.5
Boost Enabled GAIN1 = 0, GAIN0 = 0 20.5 21 21.5 dB
GAIN1 = 0, GAIN0 = 1 23.5 24 24.5
GAIN1 = 1, GAIN0 = 0 26.5 27 27.5
GAIN1 = 1, GAIN0 = 1 29.5 30 30.5
RIN Gain step size (software mode) 3 dB
Input resistance AV 0 dB 46 50 58 kΩ
30 dB 46 50 58
VOUT Output voltage THD+N = 1% VP-P
f 200 Hz 25 30
1 kHz 25 30
THD+N Total harmonic distortion + noise VOUT = 18 VP-P, f = 1 kHz 0.08%
PSRR Power supply rejection ratio
(Figure 22)		 VDD = 3.6 V + 200 mVP-P sine, Inputs = AC GND dB
fRIPPLE = 217 Hz 55 78
fRIPPLE = 1 kHz 76
CMRR Common mode rejection ratio
(Figure 23)		 VCM = 200 mVP-P sine
fRIPPLE = 217 Hz 68 dB
fRIPPLE = 1k Hz 78 dB
SNR Signal-to-noise-ratio Boost Disabled, A-weighted 107 dB
Boost Enabled A-weighted 98 dB
εOS Output noise A-weighted
AV 24 dB 134 μVRMS
0 dB (Boost Disabled) 16
TA Attack time ATK1:ATK0 = 00, CSET = 100 nF 0.83 ms
TR Release time RLT1:RLT0 = 00, CSET = 100 nF 0.5 s
fSW Boost converter switching frequency 2 MHz
ILIMIT Boost converter current limit 1.5 A
VIH Logic high input threshold SHDN 1.4 V
VIL Logic low input threshold SHDN 0.5 V
IIN Input leakage current SHDN 0.1 0.2 μA
(1) Datasheet min/max specification limits are ensured by design, test, or statistical analysis.
(2) Typical values represent most likely parametric norms at TA = 25 ºC, and at the Recommended Operation Conditions at the time of product characterization and are not ensured.

6.5 I2C Interface Characteristics

The following specifications apply for RPU = 1 kΩ to VDD, SW/HW = 1 (Software Mode) unless otherwise specified. Limits apply for TA = 25 °C. (2)(1)
PARAMETER TEST CONDITIONS MIN (2) TYP (2) MAX (2) UNIT
VIH Logic Input High Threshold SDA, SCL 1.1 V
VIL Logic Input Low Threshold SDA, SCL 0.5 V
SCL Frequency 400 kHz
t1 SCL Period 2.5 μs
t2 SDA Setup Time 250 ns
t3 SDA Stable Time 250 ns
t4 Start Condition Time 250 ns
t5 Stop Condition Time 250 ns
(1) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes. Typical specifications are estimations only and are not ensured.
(2) Charge device model, applicable std. JESD22-C101-C.
LM48560 30150740.png Figure 1. I2C Timing Diagram
LM48560 30150741.gif Figure 2. Start and Stop Diagram

6.6 Typical Characteristics

All typical performance curves are taken with conditions seen in Typical Characteristics, unless otherwise specified.
LM48560 30150754.gif Figure 3. THD+N vs Frequency
CL = 0.6 μF, VDD = 3.6 V, Boosted, AV = 24 dB
LM48560 30150756.gif Figure 5. THD+N vs Frequency
CL = 1.5 μF, VDD = 3.6 V, Boosted, AV = 24 dB
LM48560 30150775.gif Figure 7. THD+N vs Frequency
VDD = 3.6 V, CL = 1 μF, VOUT = 5 VP-P
Unboosted , AV = 0 dB
LM48560 30150778.gif Figure 9. Output Voltage vs Frequency
CL = 1.5 μF, THD+N ≤ 1%, Boosted
LM48560 30150760.gif Figure 11. THD+N vs Output Voltage
CL = 0.6 μF, VDD = 3.6 V, Boosted, AV = 24 dB
LM48560 30150761.gif Figure 13. THD+N vs Output Voltage
CL = 1.5 μF, VDD = 3.6 V, Boosted, AV = 24 dB
LM48560 30150753.gif Figure 15. Input Voltage vs Output Voltage
ALC Enabled, AV = 21 dB, VDD = 3.6 V
LM48560 30150751.gif Figure 17. Total Power Consumption vs Output Voltage
VDD = 3.6 V, CL = 0.6 μF
LM48560 30150750.gif Figure 19. Total Power Consumption vs Output Voltage
VDD = 3.6 V, CL = 1.5 μF
LM48560 30150742.gif Figure 21. Power Supply Rejection Ratio vs Frequency
VRIPPLE = 200 mVP-P, VDD = 3.6 V, CL = 1.5 μF
LM48560 30150755.gif Figure 4. THD+N vs Frequency
CL = 1 μF, VDD = 3.6 V, Boosted, AV = 24 dB
LM48560 30150773.gif Figure 6. THD+N vs Frequency
VDD = 3.6 V, CL = 0.6 μF, VOUT = 5 VP-P
Unboosted, AV = 0 dB
LM48560 30150774.gif Figure 8. THD+N vs Frequency
VDD = 3.6 V, CL = 1.5 μF, VOUT = 5 VP-P
Unboosted, AV = 0 dB
LM48560 30150777.gif Figure 10. Output Voltage vs Frequency
CL = 1.5 μF, THD+N ≤ 1%, Unboosted
LM48560 30150762.gif Figure 12. THD+N vs Output Voltage
CL = 1 μF, VDD = 3.6 V, Boosted, AV = 24 dB
LM48560 30150781.gif Figure 14. THD+N vs Output Voltage
CL = 1.5 μF, VDD = 3.6 V, Unboosted, AV = 0 dB
LM48560 30150749.gif Figure 16. Supply Current vs Supply Voltage
RL = ∞
LM48560 30150752.gif Figure 18. Total Power Consumption vs Output Voltage
VDD = 3.6 V, CL = 1 μF
LM48560 30150729.gif Figure 20. Common Mode Rejection Ratio vs Frequency
VCM= 200 mVP-P, CIN = 10 μF, VDD = 3.6 V, CL = 1.5 μF