The INA129-HT are low-power, general- instrumentation amplifiers offering excellent accuracy. The versatile three-operational-amplifier design and small size make them Perfect 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 INA129-HT gain equation is compatible with the AD620. The INA129-HT are trimmed for very low offset voltage (25 V Typ) and high common-mode rejection (93 dB at G more than the equal 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. ' 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 Celsius to 210 Celsius temperature range. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you Material: Metal colour: Purple Package Contents: 1 x Amplifier Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.