VCA821IDGST

Instrumentation, Op Amps, Buffer Amps Overview

The VCA821IDGST is a single-channel variable gain amplifier from Texas Instruments, housed in a 10-VSSOP package. It operates on a supply voltage range of 7 V to 12 V with a typical supply current of 34 mA. Key electrical specifications include a gain-bandwidth product of 320 MHz and a -3 dB bandwidth of 710 MHz. The device features a slew rate of 2.5 kV/µs (or 2500 V/µs), an input offset voltage of 4 mV to 17 mV, and an input bias current of 19 µA to 25 µA. It exhibits a common-mode rejection ratio of 65 dB and a power supply rejection ratio of 61 dB. The input voltage noise density is specified at 6 nV/√Hz.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Provides linear-in-dB variable gain control for precise signal amplification
• Features high-speed performance with wide bandwidth and fast slew rate
• Designed for low-noise operation suitable for sensitive signal chains

Instrumentation, Op Amps, Buffer Amps Applications

• Medical instrumentation front-ends
• Industrial process control systems
• Communication equipment signal conditioning

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix IDGST corresponds to the 10-VSSOP package and tape-and-reel shipping format. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the operating temperature range of -40°C to +85°C aligns with your system's environmental constraints before finalizing procurement.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when a single-channel VGA with high bandwidth and low noise is required. It is suitable for applications needing programmable gain without external components. Consider the 10-VSSOP package size for space-constrained designs. Verify that the 7 V to 12 V supply requirement fits your power budget compared to lower-voltage alternatives.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the VCA821 series of special purpose amplifiers manufactured by Texas Instruments. It utilizes BiCOM technology for its internal circuitry. The device is classified as a variable gain amplifier within the broader category of operational amplifiers and specialty ICs. It is distinct from standard op-amps by its analog gain control interface.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.