Texas Instruments INA2128
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. The INA2128 is laser-trimmed for very low offset voltage (50 µV), drift (0.5 µV/°C) and high commonmode rejection (120 dB at G ≥ 100).| Part No. | INA2128 |
|---|---|
| Datasheet | INA2128 Download |
| Manufacturer |  Texas Instruments |
| Description | Low-Power Instrumentation Amplifier |
| Buy | Stock & Price |
FEATURES
● Low offset voltage: 50 µV max● Low drift: 0.5 µV/°C max
● Low input bias current: 5 nA max
● Input voltage noise: 8 nV/√Hz at 1 kHz
● High bandwidth: 1.3 MHz at G=1 V/V
● High CMR: 120 dB min
● Inputs protected to ±40 V
● Wide supply range: ±2.25 V to ±18 V
● Low quiescent current: 700 µA per channel
● Temperature range: –40°C to +85°C
● Package: 16-pin SOIC 2
APPLICATIONS
● Pressure transmitter● Temperature transmitter
● Weigh scale
● Electrocardiogram (ECG)
● Analog input module
● Data acquisition (DAQ) 3
DESCRIPTION
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 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.
