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The INA129P is a precision, low-power instrumentation amplifier manufactured by Texas Instruments. It features a single channel with a 1.3 MHz bandwidth and a slew rate of 4 V/us. The device offers a common-mode rejection ratio of 100 dB and an input bias current of 50 nA. Input offset voltage is specified at 75 uV. Operating supply voltages range from 4.5 V to 36 V, with a typical operating current of 2 mA. It supports gains from 1 V/V to 10,000 V/V via a single external resistor. The component operates within a temperature range of -40°C to +85°C and is housed in an 8-PDIP package.
Verify the specific datasheet revision for the INA129P to ensure compatibility with your design requirements. Confirm that the 8-PDIP package meets your PCB layout constraints. Check for any recent product change notices regarding manufacturing locations or materials. Ensure the operating temperature range aligns with your environmental conditions.
Select the INA129P when high precision and low power are required in a single-channel configuration. Compare its 100 dB CMRR against other models if higher rejection is needed. Consider the 8-PDIP package size relative to available board space. Evaluate the 2 mA supply current against battery life requirements for portable applications.
The INA129P belongs to the INA12x family of precision instrumentation amplifiers from Texas Instruments. This series is known for combining high accuracy with low power consumption. The P suffix indicates the plastic DIP package variant. It serves as a fundamental building block for differential signal amplification in various analog front-end designs.
Official substitutes include the INA128 and INA129UA. Verify pinout compatibility and electrical specifications before substitution. The INA128 offers similar performance with potentially different packaging options. The INA129UA provides the same functionality in a surface-mount package.