SBOSA02A August   2021  – April 2025 OPA2397 , OPA397 , OPA4397

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information OPA397
    5. 5.5 Thermal Information OPA2397
    6. 5.6 Thermal Information OPA4397
    7. 5.7 Electrical Characteristics
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Low Operating Voltage
      2. 6.3.2 Low Input Bias Current
    4. 6.4 Device Functional Modes
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
      3. 7.2.3 Application Curve
    3. 7.3 Power Supply Recommendations
    4. 7.4 Layout
      1. 7.4.1 Layout Guidelines
      2. 7.4.2 Layout Example
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 TINA-TI™ Simulation Software (Free Download)
    2. 8.2 Documentation Support
      1. 8.2.1 Related Documentation
    3. 8.3 Receiving Notification of Documentation Updates
    4. 8.4 Support Resources
    5. 8.5 Trademarks
    6. 8.6 Electrostatic Discharge Caution
    7. 8.7 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

5.7 Electrical Characteristics

at TA = 25°C, VS = 1.7V to 5.5V (single-supply) or VS = ±0.85V to ±2.75V (dual-supply), RL = 10kΩ connected to VS / 2, VCM = VS / 2, and VOUT = VS / 2 (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
VOS Input offset voltage VS = 5.0V ±10 ±60 μV
VCM = (V+) – 200mV ±20 ±100
TA = –40°C to +125°C(1) ±200
VCM = V–, 
TA = –40°C to +125°C(1)		 ±125
OPA2397DGK ±180
dVOS/dT Input offset voltage drift VS = 5.0V TA = 0°C to 85°C ±0.16 μV/°C
TA = –40°C to +125°C(1) ±1
VCM = 5.0V, 
TA = –40°C to +125°C(1)		 ±0.18 ±1.5
PSRR Power supply rejection ratio VCM = V– ±30 μV/V
TA = –40°C to +125°C(1) ±80
INPUT BIAS CURRENT
IB Input bias current(1) ±0.01 ±1 pA
TA = –40°C to +85°C ±10
TA = –40°C to +125°C ±50
IOS Input offset current(1) ±0.01 ±0.8 pA
TA = –40°C to +85°C ±5
TA = –40°C to +125°C ±30
NOISE
Input voltage noise f = 0.1Hz to 10Hz 2.0 μVPP
VCM = (V+) – 0.3V   3.2
eN Input voltage noise density f = 10Hz   42   nV/√Hz
VCM = (V+) – 0.3V 80
f = 1kHz 6.5
VCM = (V+) – 0.3V   10.4  
f = 10kHz   4.4
VCM = (V+) – 0.3V 5.8
iN Input current noise density f = 1kHz OPA397   70   fA/√Hz
OPA2397, OPA4397 25
INPUT VOLTAGE
VCM Common-mode voltage range V– V+ V
CMRR Common-mode rejection ratio (V–) < VCM < (V+) – 1.5V 75 120 dB
TA = –40°C to +125°C 113
(V–) < VCM < (V+), 
TA = –40°C to +125°C(1)		 66 97
VS = 5.5V 88 111
INPUT CAPACITANCE
ZID Differential 1013 || 2.8 Ω || pF
ZICM Common-mode 1013 || 3.5 Ω || pF
OPEN-LOOP GAIN
AOL Open-loop voltage gain VS = 5.5V (V–) + 50mV < VOUT <
(V+) – 50mV		 115 132 dB
(V–) + 100mV < VO <
(V+) – 100mV, RL = 2kΩ		 110 128
(V–) + 100mV < VOUT <
(V+) – 100mV, RL = 2kΩ, 
TA = –40°C to +125°C(1)		 100
VS = 1.7V (V–) + 50mV < VOUT <
(V+) – 50mV, 
VCM = (V+) – 1.15V		 106 124
(V–) + 100mV < VOUT <
(V+) – 100mV, RL = 2kΩ, 
VCM = (V+) – 1.15V		 106 124
(V–) + 100mV < VOUT <
(V+) – 100mV, RL = 2kΩ, 
VCM = (V+) – 1.15V, 
TA = –40°C to +125°C(1)		 100
FREQUENCY RESPONSE
GBW Gain-bandwidth product AV = 1000V/V 13 MHz
SR Slew rate 4V step, gain = +1 falling 4.5 V/μs
rising 3.5
Phase margin CL = 100pF OPA397 45 °
OPA2397, OPA4397 35
tS Settling time To 0.1%, 2V step, gain = +1 0.75 μs
To 0.01%, 2V step, gain = +1 1
Overload recovery time VIN × gain > VS 0.45 μs
THD+N Total harmonic distortion + noise VOUT = 1VRMS, gain = +1, f = 1kHz,
VCM = (V–) + 1.5V		 –112 dB
0.00025 %
OUTPUT
Voltage output swing from both rails VS = 1.7V 20 mV
RL = 2kΩ 30
VS = 5.5V 20
RL = 2kΩ 35
ISC Short-circuit current Sinking, VS = 5.5V –55 mA
Sourcing, VS = 5.5V 65
RO Open-loop output impedance f = 1MHz 120 Ω
POWER SUPPLY
IQ Quiescent current per amplifier IO = 0mA 1.22 1.4 mA
TA = –40°C to +125°C(1) 1.5
(1) Specification established from device population bench system measurements across multiple lots.