SBOS931B January   2019  – August 2019 OPA1671

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Electret Microphone Preamplifier
      2.      OPA1671 Voltage Noise Density
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Operating Voltage
      2. 7.3.2 Input Bias Current
      3. 7.3.3 Common-Mode Voltage Range
      4. 7.3.4 EMI Susceptibility and Input Filtering
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Capacitive Loads
      2. 8.1.2 Noise Performance
      3. 8.1.3 Basic Noise Calculations
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  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 Device Support
      1. 11.1.1 Development Support
        1. 11.1.1.1 TINA-TI (Free Software Download)
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Receiving Notification of Documentation Updates
    4. 11.4 Community Resources
    5. 11.5 Trademarks
    6. 11.6 Electrostatic Discharge Caution
    7. 11.7 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6.5 Electrical Characteristics

at VS = ±0.85 V to ±2.75 V (VS = 1.7 V to 5.5 V), TA = 25°C, RL = 10 kΩ connected to VS / 2, VCM = VS / 2, and VOUT = VS / 2 (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
AUDIO PERFORMANCE
THD+N Total harmonic distortion + noise G = 1, f = 1 kHz, VO = 1 VRMS, VS = 5.5 V 0.00035%
–109 dB
IMD Intermodulation distortion G = 1, VO = 1 VRMS, VS = 5.5 V SMPTE/DIN Two-Tone, 4:1, (60 Hz and 7 kHz) 0.00158%
–96 dB
CCIF Two-Tone (19 kHz and 20 kHz) 0.0005%
–106 dB
FREQUENCY RESPONSE
GBW Gain-bandwidth product 13 MHz
SR Slew rate 4-V step, G = 1 5 V/μs
tS Settling time To 0.1%, 2-V step , G = 1 0.75 μs
To 0.01%, 2-V step , G = 1 1
Overload recovery time VIN  × gain > VS 0.35 μs
NOISE
Input voltage noise f = 0.1 Hz to 10 Hz 2.4 μVPP
eN Input voltage noise density f = 10 Hz 45 nV/√Hz
f = 1 kHz 7
f = 10 kHz 4.0
iN Input current noise f = 1 kHz 4.7 fA/√Hz
OFFSET VOLTAGE
VOS Input offset voltage VCM = (V+) ±1.6 mV
VCM = (V–) ±1.6
±0.25 ±1.25
TA = –40°C to 125°C ±0.25
dVOS/dT Input offset voltage drift TA = –40°C to 125°C ±0.3 ±2.2 μV/°C
PSRR Input offset voltage versus power supply VCM = (V–)  ±30 ±130 μV/V
INPUT BIAS CURRENT
IB Input bias current ±10 pA
IOS Input offset current ±10
INPUT VOLTAGE RANGE
VCM Common-mode voltage range V– V+ V
CMRR Common-mode rejection ratio VS = 1.7 V, (V–) < VCM < (V+) – 1.25 V 74 91 dB
VS = 5.5 V, (V–) < VCM < (V+) – 1.25 V 80 96
VS = 1.7 V, VCM = 0 V to 1.7 V 60 88
VS = 5.5 V, VCM = 0 V to 5.5 V 68 102
INPUT CAPACITANCE
ZID Differential 1013 || 6 MΩ || pF
ZICM Common-mode 1013 || 2.5 GΩ || pF
OPEN-LOOP GAIN
AOL Open-loop voltage gain (V–) + 50 mV < VO < (V+) –
50 mV, RL = 10 kΩ		 97 113 dB
TA = –40°C to 125°C 106
(V–) + 200 mV < VO < (V+) –
200 mV, RL = 2 kΩ		 97 112
TA = –40°C to 125°C 105
OUTPUT
Voltage output swing from rail VS = 5.5 V, RL = 10 kΩ 10 20 mV
ISC Short-circuit current Sinking, VS = 5.5 V –57 mA
Sourcing, VS = 5.5 V 66
POWER SUPPLY
IQ Quiescent current per amplifier IO = 0 mA 0.94 1.3 mA
IO = 0 mA, TA = –40°C to 125°C 1.4