AD605BRZ-R7

Overview

The AD605BRZ-R7 is a dual-channel, low-noise, single-supply variable gain amplifier (VGA) manufactured by Analog Devices Inc. It operates on a 4.5 V to 5.5 V supply with a typical current of 23 mA. The device features a 40 MHz gain-bandwidth product and offers a selectable voltage gain range of -14 dB to +34 dB or 0 dB to +48 dB via the FBK pin configuration. Input bias current is 400 nA, and input resistance is 175 Ohms. It utilizes an SOIC-16 surface-mount package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Dual independent channels with linear dB response for high-precision signal processing
• Single-ended unipolar gain control interface allowing flexible adjustment ratios
• Low noise performance with differential inputs and single-supply operation
• Power-down mode activation when gain control voltage falls below threshold

Applications

• Ultrasonic and sonar time gain control systems
• High-performance automatic gain control (AGC) circuits
• Precision signal measurement equipment

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific reel packaging quantities prior to order placement. Ensure the SOIC-16 package variant matches design requirements. Review datasheet revision history for any parameter updates. Validate operating temperature ranges against environmental specifications.

Selection Notes

Select this component for applications requiring wide dynamic range and precise linear dB gain control. Consider the 40 MHz bandwidth for high-frequency signal processing needs. Evaluate the single-supply architecture for simplified power management in portable devices. Assess the need for dual-channel integration versus discrete solutions. Verify compatibility with external reference voltages for gain scaling.

Part Context

The AD605BRZ-R7 belongs to the AD605 family of variable gain amplifiers. It integrates two DSX-AMP architectures, each combining a programmable attenuator with a fixed-gain amplifier. This design enables accurate gain control over a wide range while maintaining low noise characteristics. The part is optimized for broadband applications requiring stable performance across temperature variations.

Replacement Considerations

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