INA128 Series

Precision, 130-dB CMRR, 700-µA, Low-Power, Instrumentation Amplifier

Catalog

Precision, 130-dB CMRR, 700-µA, Low-Power, Instrumentation Amplifier

Part	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Input Offset	Amplifier Type	Current - Input Bias	Voltage - Supply Span (Min) [Min]	Current - Output / Channel	Number of Circuits	-3db Bandwidth	Slew Rate	Supplier Device Package	Current - Supply	Voltage - Supply Span (Max) [Max]	Package / Case	Package / Case
Texas Instruments INA128UA/2K5G4	8-SOIC	3.9 mm	0.154 in	Surface Mount	125 °C	-40 °C	25 çV	Instrumentation	2 nA	4.5 V	15 mA	1	1.3 MHz	4 V/µs	8-SOIC	700 µA	36 V
Texas Instruments INA128P	8-DIP			Through Hole	85 °C	-40 °C	10 µV	Instrumentation	2 nA	4.5 V	15 mA	1	1.3 MHz	4 V/µs	8-PDIP	700 µA	36 V	0.3 in	7.62 mm
Texas Instruments INA128UA	8-SOIC	3.9 mm	0.154 in	Surface Mount	125 °C	-40 °C	25 çV	Instrumentation	2 nA	4.5 V	15 mA	1	1.3 MHz	4 V/µs	8-SOIC	700 µA	36 V
Texas Instruments INA128UA/2K5E4	8-SOIC	3.9 mm	0.154 in	Surface Mount	125 °C	-40 °C	25 çV	Instrumentation	2 nA	4.5 V	15 mA	1	1.3 MHz	4 V/µs	8-SOIC	700 µA	36 V
Texas Instruments INA128UG4	8-SOIC	3.9 mm	0.154 in	Surface Mount	85 °C	-40 °C	10 µV	Instrumentation	2 nA	4.5 V	15 mA	1	1.3 MHz	4 V/µs	8-SOIC	700 µA	36 V
Texas Instruments INA128UAG4	8-SOIC	3.9 mm	0.154 in	Surface Mount	125 °C	-40 °C	25 çV	Instrumentation	2 nA	4.5 V	15 mA	1	1.3 MHz	4 V/µs	8-SOIC	700 µA	36 V
Texas Instruments INA128U/2K5	8-SOIC	3.9 mm	0.154 in	Surface Mount	85 °C	-40 °C	10 µV	Instrumentation	2 nA	4.5 V	15 mA	1	1.3 MHz	4 V/µs	8-SOIC	700 µA	36 V

Catalog

Precision, 130-dB CMRR, 700-µA, Low-Power, Instrumentation Amplifier

Key Features

• Low offset voltage: 50 µV, maximumLow drift: 0.5 µV/°C, maximumLow input bias current: 5 nA, maximumLow noise: 8 nV/√Hz, 0.2 µVppHigh CMR: 120 dB, minimumBandwidth: 1.3 MHz (G = 1)Inputs protected to ±40 VWide supply range: ±2.25 V to ±18 VLow quiescent current: 700 µAPackages: 8-pin plastic DIP, SO-8Low offset voltage: 50 µV, maximumLow drift: 0.5 µV/°C, maximumLow input bias current: 5 nA, maximumLow noise: 8 nV/√Hz, 0.2 µVppHigh CMR: 120 dB, minimumBandwidth: 1.3 MHz (G = 1)Inputs protected to ±40 VWide supply range: ±2.25 V to ±18 VLow quiescent current: 700 µAPackages: 8-pin plastic DIP, SO-8

Description

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. 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. The INA128 provides an industry-standard gain equation with a 50-kΩ resistor. 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 surface-mount packages, specified for the –40°C to +85°C temperature range. The INA128 is also available in a dual configuration, theINA2128. The upgradedINA828offers a lower input bias current (0.6 nA, max) and lower noise (7 nV/√Hz) at the same quiescent current. See theDevice Comparison Tablefor a selection of precision instrumentation amplifiers from Texas Instruments. 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. 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. The INA128 provides an industry-standard gain equation with a 50-kΩ resistor. 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 surface-mount packages, specified for the –40°C to +85°C temperature range. The INA128 is also available in a dual configuration, theINA2128. The upgradedINA828offers a lower input bias current (0.6 nA, max) and lower noise (7 nV/√Hz) at the same quiescent current. See theDevice Comparison Tablefor a selection of precision instrumentation amplifiers from Texas Instruments.