AD7989-5BCPZ-R2

Overview

The AD7989-5BCPZ-R2 is an 18-bit, 500 kSPS PulSAR analog-to-digital converter (ADC) from Analog Devices. It features a true differential analog input range of ±VREF with VREF between 2.4 V and 5.1 V. The device operates on a single 2.5 V supply with logic interface compatibility for 1.8 V, 2.5 V, 3 V, and 5 V via the VIO pin. Key performance metrics include a typical SNR of 98 dB, THD of −119 dB, and INL of ±1 LSB typical at VREF = 5 V. Power dissipation is 2 mW (VDD only) at 500 kSPS. It utilizes a proprietary serial interface compatible with SPI/QSPI/MICROWIRE/DSP standards and is housed in a 10-lead LFCSP package.

Feature Summary

• Zero latency architecture providing immediate data availability after conversion completion without pipeline delay.
• True differential analog input voltage range supporting ±VREF operation for high common-mode rejection.
• Versatile serial interface allowing daisy-chaining of multiple ADCs on a single bus using the SDI/CS input.

Applications

• Automated test equipment
• Data acquisition systems
• Medical instruments
• Machine automation

Procurement Notes

Verify the specific suffix R2 against the manufacturer's current ordering guide to confirm reel quantity and tape specifications. Ensure the component matches the AD7989-5 throughput variant rather than the AD7989-1. Confirm RoHS compliance status through official documentation prior to integration.

Selection Notes

Select this model when 18-bit resolution and 500 kSPS throughput are required. Choose over the AD7989-1 if higher speed is needed. Ensure the application supports differential inputs and external reference voltages between 2.4 V and 5.1 V. Verify that the host system provides a separate VIO supply for digital logic level translation.

Part Context

This component belongs to the AD7989-1/AD7989-5 family of 18-bit PulSAR ADCs. It shares architectural similarities with other members like the AD7989-1 but offers higher throughput. It is part of Analog Devices' precision data converter portfolio designed for low-power, high-performance applications requiring precise signal digitization.

Replacement Considerations

The AD7989-1 is a pin-compatible alternative offering 100 kSPS throughput. For higher resolution needs, consider the AD40221. For lower resolution requirements, the AD7690 or AD7989-5BRMZ may be suitable depending on package constraints.