SBOS035B december   1995  – may 2023 INA2128

PRODUCTION DATA  

  1.   1
  2. 1Features
  3. 2Applications
  4. 3Description
  5. 4Revision History
  6. 5Pin Configuration and Functions
  7. 6Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Typical Characteristics
  8. 7Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application
      1. 7.2.1 Setting The Gain
      2. 7.2.2 Dynamic Performance
      3. 7.2.3 Noise Performance
      4. 7.2.4 Offset Trimming
      5. 7.2.5 Input Bias Current Return Path
      6. 7.2.6 Input Common-Mode Range
      7. 7.2.7 Low-Voltage Operation
      8. 7.2.8 Input Protection
      9. 7.2.9 Channel Crosstalk
  9. 8Device and Documentation Support
    1. 8.1 Receiving Notification of Documentation Updates
    2. 8.2 Support Resources
    3. 8.3 Trademarks
    4. 8.4 Electrostatic Discharge Caution
    5. 8.5 Glossary
  10. 9Mechanical, Packaging, and Orderable Information

Package Options

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

3 Description

The INA2128 is a dual, low-power, general-purpose instrumentation amplifier (IA) offering excellent accuracy. The versatile three-op-amp design and small size make this device an excellent choice for a wide range of applications. Current-feedback input circuitry provides wide bandwidth, even at high gain (200 kHz at G = 100). A single external resistor sets any gain from 1 to 10,000. Internal input protection can withstand up to ±40 V without damage.

The INA2128 is laser-trimmed for very low offset voltage (50 µV), drift (0.5 µV/°C) and high common-mode rejection (120 dB at G ≥ 100). The device operates with power supplies as low as ±2.25 V, and quiescent current is only 700 µA per IA—a great choice for battery-operated and multiple-channel systems.

The INA2128 is available in an SOIC-16 package, and is specified from –40°C to +85°C.

Package Information
PART NUMBER PACKAGE(1) PACKAGE SIZE(2)
INA2128 DW (SOIC, 16) 10.3 mm × 10.3 mm
(1) For all available packages, see the orderable addendum at the end of the data sheet.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
GUID-20211027-SS0I-MFMZ-8HL0-W90XK3HPW8TQ-low.png Simplified Schematic