SBOSA00B December   2019  – August 2020 OPA1637

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
    6. 6.6 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Characterization Configuration
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Super-Beta Input Bipolar Transistors
      2. 8.3.2 Power Down
      3. 8.3.3 Flexible Gain Setting
      4. 8.3.4 Amplifier Overload Power Limit
    4. 8.4 Device Functional Modes
  9. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Driving Capacitive Loads
      2. 9.1.2 Operating the Power-Down Feature
      3. 9.1.3 I/O Headroom Considerations
      4. 9.1.4 Noise Performance
    2. 9.2 Typical Applications
      1. 9.2.1 Current-Output Audio DAC Buffer to Class-D Amplifier
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
      2. 9.2.2 An MFB Filter Driving an ADC Application
        1. 9.2.2.1 Design Requirements
        2. 9.2.2.2 Detailed Design Procedure
        3. 9.2.2.3 Application Curves
      3. 9.2.3 Differential Microphone Input to Line Level
        1. 9.2.3.1 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
      1. 11.1.1 Board Layout Recommendations
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
    2. 12.2 Documentation Support
      1. 12.2.1 Related Documentation
    3. 12.3 Receiving Notification of Documentation Updates
    4. 12.4 Support Resources
    5. 12.5 Trademarks
    6. 12.6 Electrostatic Discharge Caution
    7. 12.7 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 Electrical Characteristics

at TA = 25°C, VS (dual supply) = ±1.5 V to ±18 V, VVOCM = 0 V, input common mode voltage (VICM) = 0 V, RF = 2 kΩ, VPD = VVS+, RL = 10 kΩ(1) (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
FREQUENCY RESPONSE
SSBWSmall-signal bandwidthVO(2) = 100 mVPP, G = –1 V/V7MHz
GBPGain-bandwidth productVO = 100 mVPP, G = –10 V/V9.2MHz
FBPFull-power bandwidthVO = –1 VPP, G = –1 V/V2.5MHz
SRSlew rateG = –1, 10-V step15V/µs
Settling time0.1% of final value, G = –1 V/V, VO = 10-V step1µs
0.01% of final value, G = –1 V/V, VO= 10-V step2
THD+NTotal harmonic distortion and noiseDifferential input, f = 1 kHz, VO = 10 VPP–120dB
0.0001%
Single-ended input, f = 1 kHz, VO = 10 VPP–115dB
0.00018%
Differential input, f = 10 kHz, VO = 10 VPP–112dB
0.00025%
Single-ended input, f = 10 kHz, VO = 10 VPP–107dB
0.00045%
HD2Second-order harmonic distortionDifferential input, f = 1 kHz, VO = 10 VPP–126dB
Single-ended input, f = 1 kHz, VO = 10 VPP–120
HD3Third-order harmonic distortionDifferential input, f = 1 kHz, VO = 10 VPP–131dB
Single-ended input, f = 1 kHz, VO = 10 VPP–119
Overdrive recovery timeG = 5 V/V, 2x output overdrive, dc-coupled3.3µs
NOISE
enInput differential voltage noisef = 1 kHz3.7nV/√ Hz
f = 10 Hz4
f = 0.1 Hz to 10 Hz0.1µVPP
eiInput current noise, each inputf = 1 kHz300fA/√ Hz
f = 10 Hz400
f = 0.1 Hz to 10 Hz13.4pAPP
OFFSET VOLTAGE
VIOInput-referred offset voltage20±200µV
TA = –40°C to +125°C±250
Input offset voltage driftTA = –40°C to +125°C0.1±1µV/°C
PSRRPower-supply rejection ratio0.025±0.5µV/V
TA = –40°C to +125°C±1
INPUT BIAS CURRENT
IBInput bias current0.2±2nA
TA = –40°C to +125°C±4
Input bias current driftTA = –40°C to +125°C2±15pA/°C
IOSInput offset current0.2±1nA
TA = –40°C to +125°C±3
Input offset current driftTA = –40°C to +125°C1±10pA/°C
INPUT VOLTAGE
Common-mode voltageTA = –40°C to +125°CVVS– + 1VVS+ – 1V
CMRRCommon-mode rejection ratioVVS– + 1 V ≤ VICM ≤  VVS+ – 1 V140
VVS– + 1 V ≤ VICM ≤  VVS+ – 1 V, VS = ±18 V126140dB
VVS– + 1 V ≤ VICM ≤ VVS+ – 1 V, VS = ±18 V
TA = –40°C to   +125°C		120
INPUT IMPEDANCE
Input impedance differential modeVICM = 0 V1 || 1GΩ || pF
OPEN-LOOP GAIN
AOLOpen-loop voltage gainVS = ±2.5 V, VVS– + 0.2 V < VO <  VVS+ – 0.2 V115120dB
VS = ±2.5 V, VVS– + 0.3 V < VO < VVS+ – 0.3 V,
TA = –40°C to +125°C		110120
VS = ±15 V, VVS– + 0.6 V < VO < VVS+ – 0.6 V115120
VS = ±15 V, VVS– + 0.6 V < VO < VVS+ – 0.6 V,
TA = –40°C to +125°C		110120
OUTPUT
Output voltage difference from supply voltageVS = ±2.5 V±100mV
VS = ±2.5 V, TA = –40°C to +125°C±100
VS = ±18 V±230
VS = ±18 V, TA = –40°C to +125°C±270
ISCShort-circuit current±31mA
CLOADCapacitive load driveDifferential capacitive load, no output Isolation resistors, phase margin = 30°50pF
ZOOpen-loop output impedancef = 100 kHz (differential)14Ω
OUTPUT COMMON-MODE VOLTAGE (VOCM) CONTROL
Input Voltage RangeVS = ±2.5 VVVS– + 1VVS+ – 1
VS = ±18 VVVS– + 2VVS+ – 2
Small-signal bandwidth from VOCM pinVVOCM= 100 mVPP2MHz
Large-signal bandwidth from VOCM pinVVOCM = 0.6 VPP5.7
Slew rate from VOCM pinVVOCM = 0.5-V step, rising3.5V/µs
VVOCM = 0.5-V step, falling5.5
DC output balanceVVOCM fixed midsupply (VO = ±1 V)78dB
VOCM input impedance2.5 || 1MΩ || pF
VOCM offset from mid-supplyVOCM pin floating2mV
VOCM common-mode offset voltageVVOCM = VICM, VO = 0 V±1±6mV
VVOCM = VICM, VO = 0 V, TA = –40°C to +125°C±10
VOCM common-mode offset voltage driftVVOCM = VICM, VO = 0 V, TA = –40°C to +125°C±20±60µV/°C
POWER SUPPLY
IQQuiescent operating current0.951.2mA
TA = –40°C to +125°C1.6
POWER DOWN
VPD(HI)Power-down enable voltageTA = –40°C to +125°CVVS+ – 0.5V
VPD(LOW)Power-down disable voltageTA = –40°C to +125°CVVS+ – 2.0V
PD bias currentVPD =  VVS+ – 2 V12µA
Powerdown quiescent current1020µA
Turn-on time delayVIN = 100 mV, time to VO = 90% of final value10µs
Turn-off time delayVIN = 100 mV, time to VO = 10% of original value15µs
(1) RL is connected differentially, from OUT+ to OUT–.
(2) VO refers to the differential output voltage, VOUT+ –  VOUT–.