INA129UA/2K5 Datasheet

Precision, Low-Power Instrumentation Amplifiers


The INA128 and INA129 are low-power, general purpose instrumentation amplifiers offering excellent accuracy. The versatile 3-op amp design and small size make these amplifiers ideal 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; the INA129 gain equation is compatible with the AD620.
The INA12x 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 INA12x operates with power supplies as low as ±2.25 V, and quiescent current is only 700 μA, ideal for battery operated systems. Internal input protection can withstand up to ±40 V without damage.
The INA12x is available in 8-pin plastic DIP and SO-8 surface-mount packages, specified for the –40°C to +85°C temperature range. The INA128 is also available in a dual configuration, the INA2128.

• Low Offset Voltage: 50 μV Maximum
• Low Drift: 0.5 μV/°C Maximum
• Low Input Bias Current: 5 nA Maximum
• High CMR: 120 dB minimum
• Inputs Protected to ±40 V
• Wide Supply Range: ±2.25 V to ±18 V
• Low Quiescent Current: 700 μA
• 8-Pin Plastic Dip, SO-8

• Bridge Amplifier
• Thermocouple Amplifier
• RTD Sensor Amplifier
• Medical Instrumentation
• Data Acquisition



Manufacturer information


Texas Instruments introduction - Texas Instruments Incorporated (TI) is a global semiconductor design and manufacturing company that develops analog ICs and embedded processors. By employing the world's brightest minds, TI creates innovations that shape the future of technology. TI is helping more than 100,000 customers transform the future, today.

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