The INA128-HT and INA129-HT are low-power, general-purpose instrumentation amplifiers offering excellent accuracy. The versatile three-operational-amplifier design and small size make them ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain. A single external resistor sets any gain from 1 to 10000. The INA128-HT provides an industry-standard gain equation; the INA129-HT gain equation is compatible with the AD620.
The INA128-HT and INA129-HT are laser trimmed for very low offset voltage (25 µV Typ) and high common-mode rejection (93 dB at G ≥ 100). These devices operate with power supplies as low as ±2.25 V, and quiescent current of 2 mA, typically. Internal input protection can withstand up to ±40 V without damage.
Texas Instruments' high-temperature products use highly optimized silicon (die) solutions with design and process enhancements to maximize performance over extended temperatures.
The INA129-HT is available in 8-pin ceramic DIP and 8-pin ceramic surface-mount packages, specified for the –55°C to 210°C temperature range. The INA128-HT is available in an 8-pin SOIC-8 surface-mount package, specified for the –55°C to 175°C temperature range.
(1) Typical values for 210°C application.
(2) Custom temperature ranges available.
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|Number of Channels (#)|
|Vs (Min) (V)|
|Vs (Max) (V)|
|CMRR (Min) (dB)|
|Input Offset (+/-) (Max) (uV)|
|Input Offset Drift (+/-) (Max) (uV/C)|
|Input Bias Current (+/-) (Max) (nA)|
|Noise at 1kHz (Typ) (nV/rt(Hz))|
|Iq (Typ) (mA)|
|Bandwidth at Min Gain (Typ) (MHz)|
|Gain (Min) (V/V)|
|Gain (Max) (V/V)|
|Gain Error (+/-) (Max) (%)|
|Operating Temperature Range (C)|
|Package Size: mm2:W x L (PKG)|
|Noise at 0.1 Hz - 10 Hz (Typ) (uVpp)|
|Gain Non-Linearity (+/-) (Max) (%)|
|-55 to +175|
|8SOIC: 29 mm2: 6 x 4.9(SOIC)|
|Catalog||INA128||TI's standard catalog product|