SBOS392H August   2007  – August 2019 REF3312 , REF3318 , REF3320 , REF3325 , REF3330 , REF3333

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      REF3312 in a Single-Supply Signal Chain
      2.      Dropout Voltage vs Load Current
  4. 4 Revision History
  5. 5 Device Comparison
  6. 6 Pin Configuration and Functions
    1. Table 1. Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Parameter Measurement Information
    1. 8.1 Thermal Hysteresis
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Start-Up Time
      2. 9.3.2 Low Temperature Drift
      3. 9.3.3 Power Dissipation
      4. 9.3.4 Noise Performance
    4. 9.4 Device Functional Modes
  10. 10Applications and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Applications
      1. 10.2.1 REF3312 in a Bipolar Signal-Chain Configuration
        1. 10.2.1.1 Design Requirements
        2. 10.2.1.2 Detailed Design Procedure
          1. 10.2.1.2.1 Op Amp Level-Shift Design
          2. 10.2.1.2.2 Differential Input Attenuator Design
          3. 10.2.1.2.3 Input Filtering
          4. 10.2.1.2.4 Component Selection
            1. 10.2.1.2.4.1 Voltage References
            2. 10.2.1.2.4.2 Op Amp
          5. 10.2.1.2.5 Input Attenuation and Level Shifting
          6. 10.2.1.2.6 Input Filtering
          7. 10.2.1.2.7 Passive Component Tolerances and Materials
        3. 10.2.1.3 Application Curves
          1. 10.2.1.3.1 DC Performance
          2. 10.2.1.3.2 AC Performance
  11. 11Power-Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Documentation Support
      1. 13.1.1 Related Documentation
    2. 13.2 Related Links
    3. 13.3 Receiving Notification of Documentation Updates
    4. 13.4 Community Resources
    5. 13.5 Trademarks
    6. 13.6 Electrostatic Discharge Caution
    7. 13.7 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

Package Options

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

7.5 Electrical Characteristics

At TA = 25°C, VIN = 5 V, and ILOAD = 0 mA (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
REF3312 (1.25 V)
VOUT Output voltage 1.25 V
Initial accuracy –0.15% 0.15%
Output voltage noise f = 0.1 Hz to 10 Hz 35 μVPP
REF3318 (1.8 V)
VOUT Output voltage 1.8 V
Initial accuracy –0.15% 0.15%
Output voltage noise f = 0.1 Hz to 10 Hz 50 μVPP
REF3320 (2.048 V)
VOUT Output voltage 2.048 V
Initial accuracy –0.15% 0.15%
Output voltage noise f = 0.1 Hz to 10 Hz 55 μVPP
REF3325 (2.5 V)
VOUT Output voltage 2.5 V
Initial accuracy –0.15% 0.15%
Output voltage noise f = 0.1 Hz to 10 Hz 70 μVPP
REF3330 (3.0 V)
VOUT Output voltage 3.0 V
Initial accuracy –0.15% 0.15%
Output voltage noise f = 0.1 Hz to 10 Hz 84 μVPP
REF3333 (3.3 V)
VOUT Output voltage 3.3 V
Initial accuracy –0.15% 0.15%
Output voltage noise f = 0.1 Hz to 10 Hz 92 μVPP
REF33xx (REF3312, REF3320, REF3325, REF3330, REF3333, REF3340)
dVOUT/dT Output voltage temperature drift –40°C to 85°C 9 30 ppm/°C
–40°C to 125°C 8 30
ΔVO(ΔVI) Line regulation VIN = VOUT + 200 mV to 5.5 V(1) –50 6 50 ppm/V
0°C to +70°C 6
–40°C to 85°C 8
–40°C to 125°C 30
ΔVO(ΔIL) Load regulation VIN = VOUT + 200 mV(1) –50 6 50 ppm/mA
ILOAD = ±5 mA, 0°C to 70°C 10
–40°C to 85°C 20
–40°C to 125°C 20
Long-term stability(3) 0h to 1000h at 25°C 55 ppm
dT Thermal hysteresis(2) 90 ppm
VIN – VOUT Minimum dropout voltage(1) ILOAD = ±5 mA 110 160 mV
0°C to 70°C 120
–40°C to 85°C 135
–40°C to 125°C 180
ILOAD = ±2 mA, –40°C to 85°C 70
ISC Short-circuit current Sourcing and sinking 35 mA
Capacitive load 0.1 10 μF
Turn-on settling time To 0.1% with CL = 1 μF 2 ms
POWER SUPPLY
VS Specified voltage range VOUT + 0.2(1) 5.5 V
Operating voltage range ILOAD = 0 mA VOUT + 0.005 5.5 V
IQ Current 3.9 5 µA
–40°C to 85°C 4.4 6.5
–40°C to 125°C 4.8 8.5
TEMPERATURE
TA Specified range –40 125 °C
Operating range –50 150
(1) The minimum supply voltage for the REF3312 is 1.7 V.
(2) The thermal hysteresis procedure is explained in more detail in the Thermal Hysteresis section.
(3) The long-term stability number reduces as the time increases.