AD7609 Replacement: GX18E021E Fully Hardware and Software Compatible 18-Bit ADC

GX18E021E is developed for high-precision industrial measurement and multichannel data acquisition systems requiring differential inputs and simultaneous sampling.

The device operates from a single 5 V supply and supports selectable ±20 V and ±10 V true bipolar differential input ranges. Integrated 1 MΩ input buffers, antialiasing filters and precision reference circuitry help simplify analog front-end and PCB design.

GX18E021E as a Direct AD7609 Replacement

GX18E021E provides eight differential input channels with simultaneous sampling and 18-bit resolution. Each channel operates at up to 200 kSPS, allowing all eight differential signals to be captured at the same sampling instant.

The compatible LQFP-64 package, pin configuration, analog input architecture and digital interfaces support direct board-level replacement for AD7609. Existing designs can retain their original schematic, PCB and data-acquisition architecture.

GX18E021E can also be used in new systems requiring high-resolution measurement of bipolar differential signals.

Pin-to-Pin Hardware and Software Compatibility

GX18E021E provides pin-to-pin hardware compatibility with AD7609. Existing LQFP-64 footprints, differential analog connections, power circuits, control signals and digital interfaces can continue to be used.

Parallel and serial modes can be selected through different pin configurations. The flexible interface connects directly to FPGAs, microprocessors and DSPs while allowing existing interface timing and acquisition software to be retained.

This hardware and software compatibility helps reduce redesign work and supports faster migration from AD7609 to GX18E021E.

GX18E021E vs AD7609: Key Specification Comparison

GX18E021E maintains the principal resolution, sampling rate, differential input architecture and interface capabilities required by AD7609-based systems.

Integrated Differential Signal Chain

The true differential input architecture supports direct measurement of differential bipolar signals with input ranges of ±20 V and ±10 V. A single 5 V supply simplifies the system power architecture.

Key GX18E021E features include:

l Eight true differential input channels

l Eight-channel simultaneous sampling

l 18-bit SAR conversion

l Up to 200 kSPS per channel

l Selectable ±20 V and ±10 V bipolar input ranges

l Single 5 V power supply

l Integrated 1 MΩ input buffers

l Integrated antialiasing filters

l Configurable precision reference generator and buffer

l Parallel and serial interfaces

l LQFP-64 package

l Pin-to-pin compatibility with AD7609

Applications

GX18E021E is suitable for:

l Power-line monitoring and protection systems

l Multiphase motor control

l Instrumentation and industrial control

l Multiaxis positioning systems

l Multichannel data acquisition equipment

Request the GX18E021E Datasheet and Samples

GXSC can provide the GX18E021E datasheet, samples, quotation, stable supply and technical support for AD7609 replacement projects and new differential data acquisition designs.

Contact GXSC to discuss your AD7609 replacement or GX18E021E product requirements.