AD605ANZ

Overview

The AD605ANZ is a dual-channel, low-noise, single-supply variable gain amplifier (VGA) from Analog Devices. It features a linear-in-dB response with a total gain range of 48 dB per channel, selectable between -14 dB to +34 dB or 0 dB to +48 dB via an external resistor. The device operates on a 5 V single supply with a typical current consumption of 18 mA. Key electrical parameters include a gain-bandwidth product of 40 MHz and a slew rate of 170 V/µs. It offers differential inputs and unipolar gain control, housed in a 16-lead PDIP package.

Feature Summary

• Provides dual independent channels with linear-in-dB variable gain characteristics for precise signal amplitude control.
• Features a wide 48 dB adjustable gain range per channel, configurable through a single external feedback resistor.
• Designed for low-noise performance with differential input stages to maintain signal integrity in high-frequency applications.

Applications

• High-performance broadband variable gain control systems
• Low-noise signal conditioning circuits
• Precision measurement instrumentation requiring dynamic range adjustment

Procurement Notes

Verify the specific suffix 'ANZ' to confirm the lead-free, RoHS-compliant variant in the 16-lead PDIP package. Ensure the design supports single-supply operation at 5 V and accommodates the required thermal dissipation for the through-hole mounting style. Cross-reference the datasheet for exact pinout compatibility if replacing older non-Z versions.

Selection Notes

Select this component when dual-channel linear-in-dB amplification is required within a 40 MHz bandwidth. It is suitable for designs needing flexible gain ranges (-14 dB to +34 dB or 0 dB to +48 dB) controlled by a single resistor. Consider the 18 mA supply current and 16-lead PDIP form factor for board space and power budget constraints.

Part Context

The AD605 series represents Analog Devices' solution for accurate, dual-channel VGA applications. The AD605ANZ specifically denotes the commercial grade version (-40°C to +85°C) in a standard plastic DIP package. It complements other ADI precision amplifiers by offering integrated gain control without external digital interfaces.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications against any potential alternative VGA devices before substitution.