INA500AIDCKR

Instrumentation, Op Amps, Buffer Amps Overview

The INA500AIDCKR is a cost-optimized, low-power difference amplifier from Texas Instruments. It operates on a single supply of 1.7V to 5.5V or dual supplies of ±0.85V to ±2.75V. The device features an ultra-high input impedance exceeding 1MΩ and offers three fixed gain options: G=1, G=0.5, and G=0.25. Key electrical specifications include a typical bandwidth of 125kHz, a maximum offset voltage of 3.5mV, and a quiescent current of approximately 14µA. It provides high precision with a typical CMRR of 87dB and gain error of ±0.01%.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Ultra-high input impedance exceeding 1MΩ minimizes loading effects on signal sources.
• Integrated precision matched resistors eliminate the need for external discrete components.
• Low power consumption supports battery-operated applications with minimal energy drain.
• Space-saving SC-70 package design facilitates compact board layouts.

Instrumentation, Op Amps, Buffer Amps Applications

• Level translation circuits
• Battery monitoring systems
• Signal conditioning for analog-to-digital converters

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix 'DCK' corresponds to the SC-70-6 package variant when ordering. Confirm that the 'A' version meets the required offset and CMRR performance thresholds for your application. Ensure the operating environment stays within the specified temperature range and supply voltage limits to maintain guaranteed accuracy.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high input impedance and low power are critical constraints. The fixed gain options simplify design by removing external resistor tolerances. Verify that the required bandwidth and common-mode voltage range align with the specific gain setting chosen for the target application.

Instrumentation, Op Amps, Buffer Amps Part Context

This device belongs to the INA500 family of difference amplifiers designed for cost-sensitive and space-constrained environments. It serves as a direct replacement for discrete difference amplifier implementations using commodity operational amplifiers and precision resistors, reducing bill of materials complexity.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

INA500BIDCKR

Instrumentation, Op Amps, Buffer Amps FAQ

What is the maximum input common-mode voltage?

The input common-mode voltage range depends on the gain setting and supply voltage. For example, in the G=0.25 configuration with a 5.5V supply, it can handle up to 27.5V.

Does the device require external feedback resistors?

No, the INA500 utilizes integrated precision matched resistors, eliminating the need for external discrete resistors to set the gain.