Texas Instruments INA128
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 50kΩ resistor.| Part No. | INA128 |
|---|---|
| Datasheet | INA128 Download |
| Manufacturer |  Texas Instruments |
| Description | Low-Power Instrumentation Amplifiers |
| Buy | Stock & Price |
FEATURES
● Low offset voltage: 50μV, maximum● Low drift: 0.5μV/°C, maximum
● Low input bias current: – 5nA, maximum (CSO: SHE) – 0.7nA, maximum (CSO: FRE)
● Low noise: 8nV/√Hz, 0.2μVpp
● High CMR: 120dB, minimum
● Bandwidth: 1.3MHz (G = 1)
● Inputs protected to ±40V
● Wide supply range: ±2.25V to ±18V
● Low quiescent current: 700μA
● 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 (200kHz at G = 100). A single external resistor sets any gain from 1 to 10,000. The INA129 gain equation uses a 49.4kΩ 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 (0.6nA, maximum) and lower noise (7nV/ √Hz) at the same quiescent current.
