SBOS110C May   1998  – March 2023 OPA2227 , OPA2228 , OPA227 , OPA228 , OPA4227 , OPA4228

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: OPA227, OPA228
    5. 6.5 Thermal Information: OPA2227, OPA2228
    6. 6.6 Thermal Information: OPA4227, OPA4228
    7. 6.7 Electrical Characteristics: OPAx227 
    8. 6.8 Electrical Characteristics: OPAx228 
    9. 6.9 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 Offset Voltage and Drift
      2. 7.3.2 Operating Voltage
      3. 7.3.3 Offset Voltage Adjustment
      4. 7.3.4 Input Protection
      5. 7.3.5 Input Bias Current Cancellation
      6. 7.3.6 Noise Performance
      7. 7.3.7 Basic Noise Calculations
      8. 7.3.8 EMI Rejection Ratio (EMIRR)
        1. 7.3.8.1 EMIRR IN+ Test Configuration
    4. 7.4 Device Functional Modes
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Using the OPAx228 in Low Gains
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curves
      2. 8.2.2 Three-Pole, 20 kHz Low Pass, 0.5-dB Chebyshev Filter
      3. 8.2.3 Long-Wavelength Infrared Detector Amplifier
      4. 8.2.4 High Performance Synchronous Demodulator
      5. 8.2.5 Headphone Amplifier
      6. 8.2.6 Three-Band Active Tone Control (Bass, Midrange, and Treble)
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  9. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
        1. 9.1.1.1 TINA-TI™ Simulation Software (Free Download)
        2. 9.1.1.2 TI Reference Designs
    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
  10. 10Mechanical, Packaging, and Orderable Information

Package Options

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

6.8 Electrical Characteristics: OPAx228 

at TA = +25°C, VS = ±5 V to ±15 V, VCM = VOUT = VS / 2, and RL = 10 kΩ connected to VS / 2 (unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
VOS Input offset voltage U, P grades ±5 ±75 µV
TA = –40°C to +85°C ±100
UA, PA grades ±10 ±200
TA = –40°C to +85°C ±200
dVOS/dT Input offset voltage drift U, P grades TA = –40°C to +85°C ±0.1 ±0.6 µV/°C
UA, PA grades TA = –40°C to +85°C ±0.3 ±2
PSRR Power-supply rejection ratio VS = ±2.5 V to ±18 V ±0.5 ±2 µV/V
TA = –40°C to +85°C ±2
Long-term drift 0.2 µV/mo
Channel separation (dual, quad) DC 0.2 µV/V
f = 1 kHz, RL = 5 kΩ 110 dB
INPUT BIAS CURRENT
IB Input bias current ±2.5 ±10 nA
TA = –40°C to +85°C ±10
IOS Input offset current ±2.5 ±10 nA
TA = –40°C to +85°C ±10
NOISE
Input voltage noise f = 0.1 Hz to 10 Hz 90 nVPP
15 nVRMS
en Input voltage noise density f = 10 Hz 3.5 nV/√Hz
f = 100 Hz 3
f = 1 kHz 3
in Input current noise density f = 1 kHz 0.4 pA/√Hz
INPUT VOLTAGE
VCM Common-mode voltage (V–) + 2 (V+) – 2 V
CMRR Common-mode rejection ratio (V–) + 2 V < VCM < (V+) – 2 V 120 138 dB
TA = –40°C to +85°C 120
INPUT IMPEDANCE
Differential 10 || 12 MΩ || pF
Common-mode VCM = (V–) + 2 V to (V+) – 2 V 1 || 3 GΩ || pF
OPEN-LOOP GAIN
AOL Open-loop voltage gain (V–) + 2 V < VO < (V+) – 2 V 132 160 dB
TA = –40°C to +85°C 132
(V–) + 3.5 V < VO < (V+) – 3.5 V,
RL = 600 Ω		 132 160
TA = –40°C to +85°C 132
FREQUENCY RESPONSE
Minimum closed-loop gain 5 V/V
GBW Unity gain bandwidth 33 MHz
SR Slew rate 11 V/µs
Settling time G = 1, 10-V step, CL = 100 pF To 0.1% 1.5 µs
To 0.01% 2
Overload recovery time VIN × G = VS 0.6 µs
THD+N Total harmonic distortion + noise G = 1, f = 1 kHz, VO = 3.5 VRMS 0.00005 %
OUTPUT
Voltage output  TA = –40°C to +85°C (V–) + 2 (V+) + 2 V
RL = 600 Ω (V–) + 3.5 (V+) + 3.5
ISC Short-circuit current ±45 mA
CLOAD Capacitive load drive See Typical Characteristics
ZO Open-loop output impedance f = 1 MHz 27 Ω
POWER SUPPLY
 IQ Quiescent current per amplifier IO = 0 A ±3.7 ±3.8 mA
TA = –40°C to +85°C ±4.2