Texas Instruments INA128U
The INA128 and INA129 (INA12x) are low-power, general-purpose instrumentation amplifiers that offer excellent accuracy. The versatile three op amp design and small size make these amplifiers an excellent choice for a wide range of applications. The INA128 provides an industry-standard gain equation with a 50-kΩ resistor.| Part No. | INA128U |
|---|---|
| Datasheet | INA128U Download |
| Manufacturer |  Texas Instruments |
| Description | Low-Power Instrumentation Amplifiers |
| Buy | Stock & Price |
FEATURES
● Low offset voltage: 50 μV, maximum● Low drift: 0.5 μV/°C, maximum
● Low input bias current: 5 nA, maximum
● Low noise: 8 nV/√Hz, 0.2 μVpp
● High CMR: 120 dB, minimum
● Bandwidth: 1.3 MHz (G = 1)
● Inputs protected to ±40 V
● Wide supply range: ±2.25 V to ±18 V
● Low quiescent current: 700 μA
● Packages: 8-pin plastic DIP, SO-8 2
APPLICATIONS
● Pressure transmitter● Temperature transmitter
● Weigh scale
● Electrocardiogram (ECG)
● Analog input module
● Data acquisition (DAQ) 3
DESCRIPTION
Currentfeedback 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. The INA129 gain equation uses a 49.4-kΩ resistor to allow for drop-in replacements of comparable devices. The INA12x are available in plastic DIP and surfacemount packages, specified for the –40°C to +85°C temperature range. The INA128 is also available in a dual configuration, the INA2128. The upgraded INA828 offers a lower input bias current (0.6 nA, max) and lower noise (7 nV/√Hz) at the same quiescent current.
