SBOS777D November   2016  – July 2020 OPA2388 , OPA388 , OPA4388

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: OPA388
    5. 6.5 Thermal Information: OPA2388
    6. 6.6 Thermal Information: OPA4388
    7. 6.7 Electrical Characteristics: VS = ±1.25 V to ±2.75 V (VS = 2.5 to 5.5 V)
    8. 6.8 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 Voltage and Zero-Crossover Functionality
      3. 7.3.3 Input Differential Voltage
      4. 7.3.4 Internal Offset Correction
      5. 7.3.5 EMI Susceptibility and Input Filtering
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    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 Single Operational Amplifier Bridge Amplifier
      3. 8.2.3 Precision, Low-Noise, DAC Buffer
      4. 8.2.4 Load Cell Measurement
  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™ Simulation Software (Free Download)
        2. 11.1.1.2 TI Precision Designs
    2. 11.2 Documentation Support
      1. 11.2.1 Related Documentation
    3. 11.3 Related Links
    4. 11.4 Receiving Notification of Documentation Updates
    5. 11.5 Support Resources
    6. 11.6 Trademarks
    7. 11.7 Electrostatic Discharge Caution
    8. 11.8 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

6.7 Electrical Characteristics: VS = ±1.25 V to ±2.75 V (VS = 2.5 to 5.5 V)

at TA = 25°C, VCM = VOUT = VS / 2, and RLOAD = 10 kΩ connected to VS / 2 (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
VOS Input offset voltage OPA388, OPA2388 ±0.25 ±5 µV
VS = 5.5 V OPA4388 ±2.25 ±8
TA = –40°C to +125°C OPA388, OPA2388 ±7.5
TA = –40°C to +125°C, VS = 5.5 V OPA4388 ±10.5
dVOS/dT Input offset voltage drift TA = –40°C to +125°C OPA388, OPA2388 ±0.005 ±0.05 µV/°C
TA = –40°C to +125°C, VS = 5.5 V OPA4388 ±0.005 ±0.05
PSRR Power-supply rejection ratio TA = –40°C to +125°C OPA388, OPA2388 ±0.1 ±1 µV/V
OPA4388 ±1.25 ±3.5
INPUT BIAS CURRENT
IB Input bias current RIN = 100 kΩ, OPA388, OPA2388 ±30 ±350 pA
TA = 0°C to +85°C ±400
TA = –40°C to +125°C ±700
RIN = 100 kΩ, OPA4388 ±30 ±500
TA = 0°C to +85°C ±600
TA = –40°C to +125°C ±800
IOS Input offset current RIN = 100 kΩ, OPA388, OPA2388 ±700
TA = 0°C to +85°C ±800
TA = –40°C to +125°C ±800
RIN = 100 kΩ, OPA4388 ±1000
TA = 0°C to +85°C ±1100
TA = –40°C to +125°C ±1100
NOISE
EN Input voltage noise f = 0.1 Hz to 10 Hz 0.14 µVPP
eN Input voltage noise density f = 10 Hz 7 nV/√Hz
f = 100 Hz 7
f = 1 kHz 7
f = 10 kHz 7
IN Input current noise density f = 1 kHz 100 fA/√Hz
INPUT VOLTAGE
VCM Common-mode voltage range (V–) – 0.1 (V+) + 0.1 V
CMRR Common-mode rejection ratio (V–) – 0.1 V < VCM < (V+) + 0.1 V VS = ±1.25 V                OPA388, OPA2388 124 138 dB
VS = ±1.25 V              OPA4388 102 110
VS = ±2.75 V 124 140
(V–) < VCM < (V+) + 0.1 V,
TA = –40°C to +125°C		 VS = ±1.25 V                OPA388, OPA2388 114 134
VS = ±1.25 V              OPA4388 102 107
(V–) – 0.05 V < VCM < (V+) + 0.1 V, TA = –40°C to +125°C VS = ±2.75 V 124 140
INPUT IMPEDANCE
zid Differential input impedance 100 || 2 MΩ || pF
zic Common-mode input impedance 60 || 4.5 TΩ || pF
OPEN-LOOP GAIN
AOL Open-loop voltage gain (V–) + 0.15 V < VO < (V+) – 0.15 V, RLOAD = 10 kΩ 126 148 dB
(V–) + 0.15 V < VO < (V+) – 0.15 V, RLOAD = 10 kΩ,
TA = –40°C to +125°C		 OPA388, OPA2388 120 126
(V–) + 0.15 V < VO < (V+) – 0.15 V, RLOAD = 10 kΩ, VS = 5.5 V
TA = –40°C to +125°C		 OPA4388 120 126
(V–) + 0.25 V < VO < (V+) – 0.25 V, RLOAD = 2 kΩ 126 148
(V–) + 0.30 V < VO < (V+) – 0.30 V, RLOAD = 2 kΩ OPA388, OPA2388 120 148
(V–) + 0.30 V < VO < (V+) – 0.30 V, RLOAD = 2 kΩ, VS = 5.5 V
TA = –40°C to +125°C		 OPA4388 120 126
FREQUENCY RESPONSE
GBW Unity-gain bandwidth 10 MHz
SR Slew rate G = 1, 4-V step 5 V/µs
THD+N Total harmonic distortion + noise G = 1, f = 1 kHz, VO = 1 VRMS 0.0005%
tS Settling time To 0.1% VS = ±2.5 V, G = 1,
1-V step		 0.75 µs
To 0.01% VS = ±2.5 V, G = 1,
1-V step		 2 µs
tOR Overload recovery time VIN × G = VS 10 µs
OUTPUT
VO Voltage output swing from rail Positive rail No load 1 15 mV
RLOAD = 10 kΩ 5 20
RLOAD = 2 kΩ 20 50
Negative rail No load 5 15
RLOAD = 10 kΩ 10 20
RLOAD = 2 kΩ 40 60
TA = –40°C to +125°C, both rails, RLOAD = 10 kΩ 10 25
ISC Short-circuit current VS = 5.5 V  ±60 mA
VS = 2.5 V  ±30 mA
CLOAD Capacitive load drive See Figure 6-26
ZO Open-loop output impedance f = 1 MHz, IO = 0 A, see Figure 6-25 100 Ω
POWER SUPPLY
IQ Quiescent current per amplifier VS = ±1.25 V (VS = 2.5 V) IO = 0 A 1.7 2.4 mA
TA = –40°C to +125°C, IO = 0 A 1.7 2.4
VS = ±2.75 V (VS = 5.5 V) IO = 0 A 1.9 2.6
TA = –40°C to +125°C, IO = 0 A 1.9 2.6