SBOS724A September   2015  – June 2022 OPA1688

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and 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 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 EMI Rejection
      2. 8.3.2 Phase-Reversal Protection
      3. 8.3.3 Capacitive Load and Stability
    4. 8.4 Device Functional Modes
      1. 8.4.1 Common-Mode Voltage Range
      2. 8.4.2 Electrical Overstress
      3. 8.4.3 Overload Recovery
  9. 9 Applications and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Headphone Amplifier Circuit Configuration
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Development Support
        1. 12.1.1.1 PSpice® for TI
        2. 12.1.1.2 TINA-TI™ Simulation Software (Free Download)
    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

7.5 Electrical Characteristics

at TA = 25°C, VS = ±2.25 V to ±18 V, VCM = VOUT = VS / 2, and RL = 10 kΩ connected to VS / 2 (unless otherwise noted)
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
AUDIO PERFORMANCE
THD+NTotal harmonic distortion + noiseG = 1, f = 1 kHz, VO = 3.5 VRMS , RL = 2 kΩ0.00005%
–126dB
G = 1, f = 1 kHz, VO = 3.5 VRMS , RL = 600 Ω0.000051%
–126dB
G = 1, f = 1 kHz, PO = 10 mW, RL = 128 Ω0.000153%
–116dB
G = 1, f = 1 kHz, PO = 10 mW, RL = 32 Ω0.000357%
–109dB
G = 1, f = 1 kHz, PO = 10 mW, RL = 16 Ω0.000616%
–104dB
FREQUENCY RESPONSE
GBPGain bandwidth productG = 110MHz
SRSlew rateG = 18V/µs
Full-power bandwidth(1)VO = 1 VPP1.3MHz
Overload recovery timeVIN × gain > VS200ns
Channel separation (dual)f = 1 kHz–120dB
tSSettling timeTo 0.1%, VS = ±18 V, G = 1, 10-V step3µs
NOISE
EnInput voltage noisef = 0.1 Hz to 10 Hz2.5µVPP
enInput voltage noise density(2)f = 100 Hz14nV/√Hz
f = 1 kHz8
inInput current noise densityf = 1 kHz1.8fA/√Hz
OFFSET VOLTAGE
VOSInput offset voltageTA = 25°C±0.25±1.5mV
TA = –40°C to +85°C±1.6
dVOS/dTVOS over temperature(2)TA = –40°C to +85°C±0.5±2µV/°C
PSRRPower-supply rejection ratioTA = –40°C to +85°C±1±2.5µV/V
Channel separation, dcAt dc0.1µV/V
INPUT BIAS CURRENT
IBInput bias currentTA = 25°C±10±20pA
TA = –40°C to +85°C±1.5nA
IOSInput offset currentTA = 25°C±3±7pA
TA = –40°C to +85°C±250pA
INPUT VOLTAGE RANGE
VCMCommon-mode voltage range(3)(V–) – 0.1 V(V+) – 2 VV
CMRRCommon-mode rejection ratioVS = ±2.25 V, (V–) – 0.1 V < VCM < (V+) – 2 V,
TA = –40°C to +85°C		90104dB
VS = ±18 V, (V–) – 0.1 V < VCM < (V+) – 2 V,
TA = –40°C to +85°C		104120
INPUT IMPEDANCE
Differential100 || 7MΩ || pF
Common-mode6 || 1.51012Ω || pF
OPEN-LOOP GAIN
AOLOpen-loop voltage gain(V–) + 0.35 V < VO < (V+) – 0.35 V, RL = 10 kΩ,
TA = –40°C to +85°C		108130dB
(V–) + 0.5 V < VO < (V+) – 0.5 V, RL = 2 kΩ,
TA = –40°C to +85°C		118
OUTPUT
VOVoltage output swing from railIL = ±1 mA(V–) + 0.1 V(V+) – 0.1 VmV
VS = 36 V, RL = 10 kΩ7090
VS = 36 V, RL = 2 kΩ330400
ZOOpen-loop output impedancef = 1 MHz, IO = 0 A60Ω
ISCShort-circuit current±75mA
CLOADCapacitive load driveSee Section 7.6pF
POWER SUPPLY
IQQuiescent current per amplifierIO = 0 A1.61.8mA
IO = 0 A, TA = –40°C to +85°C2
(1) Full-power bandwidth = SR / (2π × VP), where SR = slew rate.
(2) Specified by design and characterization.
(3) Common-mode range can extend to the top rail with reduced performance.