INA101HP

Overview

The INA101HP is a high-accuracy, wide-bandwidth programmable gain instrumentation amplifier manufactured by Texas Instruments. It features a fixed gain of 1 V/V to 1000 V/V with a gain error of 0.002%. The device offers a 3dB bandwidth of 25 kHz and a full power bandwidth of 300 kHz. Key electrical specifications include an input offset voltage of 250 µV, input bias current of 30 nA, and a common-mode rejection ratio (CMRR) of 106 dB. It operates on dual supply voltages ranging from ±10 V to ±40 V, with a maximum supply voltage of 40 V. The quiescent current is 6.7 mA. The component is housed in a 14-PDIP package and supports an operating temperature range from -55°C to +125°C.

Feature Summary

• Provides very high accuracy instrumentation amplification with low gain error
• Features wide bandwidth for differential-to-single-ended conversion applications
• Offers fully integrated programmable gain configuration without external components

Applications

• Differential-to-single-ended signal conversion
• High-precision data acquisition systems
• Industrial process control instrumentation

Procurement Notes

Verify the specific suffix 'HP' indicates the correct package type and temperature grade. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the ordering part number matches the required gain setting and pinout configuration for your PCB layout. Check for any non-cancelable/non-returnable restrictions if applicable to the distributor.

Selection Notes

Select this component when high accuracy and wide bandwidth are critical for differential signal conditioning. The fixed gain architecture simplifies design compared to adjustable gain amplifiers. Consider the 14-PDIP package constraints for board space. Evaluate the 6.7 mA supply current against power budget requirements. Verify that the 250 µV offset voltage meets the precision needs of the application.

Part Context

The INA101HP belongs to the INA101 series of programmable gain instrumentation amplifiers from Texas Instruments. This series is designed for applications requiring high accuracy and ease of use. The HP variant specifically denotes the plastic DIP package option. It serves as a complete solution for precision measurement tasks, integrating all necessary gain-setting resistors internally to minimize external component count and potential errors.

Replacement Considerations

Check for direct pin-compatible alternatives within the INA101 family or other TI instrumentation amplifiers with similar gain and bandwidth specs. Verify that substitute parts meet the same CMRR and offset voltage requirements. Ensure the replacement supports the required operating temperature range and supply voltage limits.