AD7988-5BRMZ-RL7

Overview

The AD7988-5BRMZ-RL7 is a 16-bit, low-power PulSAR analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features a successive approximation architecture with a throughput of 500 kSPS and operates from a single 2.5 V supply. The device accepts pseudo-differential analog inputs ranging from 0 V to VREF, where the external reference voltage can be set between 2.4 V and 5.1 V. It utilizes a versatile serial interface compatible with SPI, Microwire, and DSP protocols, supporting daisy-chaining via the SDI input. The component is housed in a 10-lead MSOP package and is specified for operation across a temperature range of −40°C to +125°C.

Feature Summary

• Features a zero-latency successive approximation architecture that eliminates pipeline delay for multiplexed applications.
• Supports flexible digital interfacing through a proprietary serial port compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic levels.
• Enables multi-device system expansion by allowing multiple ADCs to be daisy-chained on a single bus using the SDI input.

Applications

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

Procurement Notes

Verify the specific suffix RL7 indicates tape and reel packaging when sourcing this component. Confirm the BRMZ designation corresponds to the MSOP package variant rather than the LFCSP option. Ensure the ordering documentation explicitly matches the AD7988-5 series specifications for 500 kSPS throughput before finalizing procurement.

Selection Notes

Select the AD7988-5 variant over the AD7988-1 when system requirements demand a higher sampling rate of 500 kSPS. Consider the MSOP package if board space accommodates its dimensions compared to the smaller LFCSP alternative. Verify that the host microcontroller supports the required serial clock speeds and interface modes for optimal data transfer performance.

Part Context

This component belongs to the AD7988-x family of 16-bit PulSAR ADCs designed for lower power consumption. The family includes variants such as the AD7988-1 offering 100 kSPS throughput and the AD7988-5 providing 500 kSPS. Both share identical pinouts and architectural features, differing primarily in conversion speed and associated power dissipation characteristics.

Replacement Considerations

The AD7988-5BCPZ-RL7 serves as a direct replacement utilizing the LFCSP package instead of the MSOP form factor. Other members of the AD7988-x family may require software adjustments due to varying throughput rates.