SBOS984G November   2020  – September 2023 OPA2387 , OPA387 , OPA4387

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information: OPA387
    5. 6.5 Thermal Information: OPA2387
    6. 6.6 Thermal Information: OPA4387
    7. 6.7 Electrical Characteristics
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Input Bias Current
      2. 7.3.2 EMI Susceptibility and Input Filtering
    4. 7.4 Device Functional Modes
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Zero-Drift Clocking
    2. 8.2 Typical Applications
      1. 8.2.1 Bidirectional Current Sensing
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Load Cell Measurement
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
        1. 9.1.1.1 PSpice® for TI
        2. 9.1.1.2 TINA-TI™ Simulation Software (Free Download)
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

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

6.7 Electrical Characteristics

at TA = 25°C, RL = 10 kΩ connected to VS / 2, VS = 1.7 V to 5.5 V, VCM = VS / 2, VOUT = VS / 2, and min and max specification established from manufacturing final test (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
VOS Input offset voltage VS = 5.5 V ±0.25 ±2 µV
VS = 1.7 V ±0.35 ±2.5
TA = –40°C to +125°C(1) ±0.4
dVOS/dT Input offset voltage drift TA = –40°C to +125°C(1) OPA387, OPA2387 ±0.003 ±0.012 μV/°C
OPA4387 ±0.018
PSRR Power supply rejection ratio OPA387, OPA2387 ±0.05 ±0.35 μV/V
OPA4387 ±0.5
TA = –40°C to +125°C(1) ±1
INPUT BIAS CURRENT
IB Input bias current OPA387, OPA2387 ±30 ±150 pA
OPA4387 ±300
TA = –40°C to +125°C(1) OPA387, OPA2387 ±200
OPA4387 ±350
IOS Input offset current OPA387, OPA2387 ±60 ±300 pA
OPA4387 ±500
TA = –40°C to +125°C(1) OPA387, OPA2387 ±400
OPA4387 ±700
NOISE
  Input voltage noise f = 0.1 Hz to 10 Hz   177   nVPP
  27   nVRMS
eN Input voltage noise density f = 1 Hz   8.5   nV/√Hz
f = 10 Hz   8.5  
f = 100 Hz   8.5  
f = 1 kHz   8.5  
iN Input current noise f = 1 kHz   70   fA/√Hz
INPUT VOLTAGE
VCM Common-mode voltage range VS = 1.7 V (V–) – 0.1 (V+) V
VS = 5.5 V (V–) – 0.2 (V+) + 0.1
CMRR Common-mode rejection ratio (V–) – 0.1 V < VCM < (V+), VS = 1.7 V 115 138 dB
(V–) – 0.2 V < VCM < (V+) + 0.1 V, VS = 5.5 V OPA387, OPA2387 140 150
OPA4387 130
(V–) – 0.1 V < VCM < (V+), TA = –40°C to +125°C(1) 110 132
(V–) – 0.2 V < VCM < (V+) + 0.1, VS = 5.5 V, 
TA = –40°C to +125°C(1)		 130
INPUT CAPACITANCE
ZID Differential 100 || 3 MΩ || pF
ZICM Common-mode 60 || 3 GΩ || pF
OPEN-LOOP GAIN
AOL Open-loop voltage gain (V–) + 100 mV < VOUT <
(V+) – 100 mV		 OPA387, OPA2387 135 145 dB
OPA4387 120
TA = –40°C to +125°C(1) 125
(V–) + 150 mV < VOUT <
(V+) – 150 mV,
RL = 2 kΩ		 OPA387, OPA2387 132 145
OPA4387 120
TA = –40°C to +125°C(1) 125
FREQUENCY RESPONSE
GBW Gain-bandwidth product 5.7 MHz
SR Slew rate 4-V step, G = +1 2.8 V/μs
tS Settling time To 0.1%, 1-V step , G = +1 1.5 μs
To 0.01%, 1-V step , G = +1 5.5
Overload recovery time VIN  × G > VS 500 ns
Chopping clock frequency(1) 100 150 kHz
THD+N Total harmonic distortion + noise VOUT = 1 VRMS, G = +1, f = 1 kHz 0.002 %
OUTPUT
Voltage output swing from rail No load OPA387, OPA2387 1 10 mV
OPA4387 20
5 30
RL = 2 kΩ OPA387, OPA2387 20 60
OPA4387 60
TA = –40°C to +125°C(1) 30
High linearity output swing range(1) AOL > 120 dB (V–) + 0.075 (V+) – 0.075 V
RL = 2 kΩ (V–) + 0.150 (V+) – 0.150
ISC Short-circuit current VS = 5.5 V ±55 mA
VS = 1.7 V ±15
Phase margin CL = 100 pF, G = +1 40 degrees
RO Open-loop output impedance f = 1 MHz 250 Ω
POWER SUPPLY
IQ Quiescent current per amplifier IO = 0 mA 570 675 μA
TA = –40°C to 125°C(1) 700
Turn-on time At VS = 5.5 V, VS ramp rate > 0.3 V/µs, settle to 1% 25 100 μs
(1) Specification established from device population bench system measurements across multiple lots.