OPA691ID

Instrumentation, Op Amps, Buffer Amps Overview

The OPA691ID is a high-speed, single-channel current feedback operational amplifier manufactured by Texas Instruments. It features an integrated disable function that reduces supply current to below 150µA when inactive. The device operates on flexible power supplies ranging from +5V to +12V (single) or ±2.5V to ±6V (dual). Key electrical specifications include a typical quiescent current of 5.1mA, a voltage slew rate of 2100V/µs, and an output drive capability of 190mA. It maintains unit-gain stability with a bandwidth of 280MHz at G=1 and 190MHz at G=+2.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrates a hardware disable control pin to significantly reduce power consumption and place the output in a high-impedance state during idle periods.
• Utilizes a specialized output stage architecture to deliver high drive current and fast transient response while maintaining low static power draw.
• Provides excellent signal fidelity for video applications through minimized differential gain and phase errors.

Instrumentation, Op Amps, Buffer Amps Applications

• xDSL line drivers
• Broadband video buffering
• High-speed imaging channels
• ADC buffering

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific package marking against the SOIC-8 datasheet drawing to confirm authenticity. Ensure the component matches the Texas Instruments manufacturing origin. Check for physical damage to pins and verify the absence of moisture sensitivity indicators that suggest compromised storage conditions prior to installation.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when designing circuits requiring high output current drive alongside low power consumption in single-supply environments. It is suitable for applications demanding wide bandwidth and fast settling times without the complexity of external biasing networks typically required by other high-speed amplifiers.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the OPA691 family of broadband current feedback amplifiers. It shares architectural similarities with the dual-channel OPA2691 but is optimized as a single-channel solution. The 'ID' suffix specifically denotes the industrial temperature range and SOIC-8 surface-mount packaging configuration.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

The OPA2691ID serves as a functional substitute for designs utilizing two channels of the OPA691. Verify that the dual-channel variant fits the available footprint or redesign the PCB layout accordingly.