AD7989-5BRMZ-RL7

Overview

The AD7989-5BRMZ-RL7 is an 18-bit successive approximation analog-to-digital converter (ADC) from Analog Devices, operating at a throughput of 500 kSPS. It features true differential analog inputs with a voltage range of ±VREF and accepts external reference voltages 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. It utilizes a proprietary serial interface compatible with SPI, QSPI, Microwire, and DSP standards. The component is housed in a 10-lead MSOP package and supports operation across a temperature range of −40°C to +85°C.

Feature Summary

• Zero latency architecture providing immediate data availability after conversion completion without pipeline delay.
• High dynamic performance characterized by low integral nonlinearity error and high signal-to-noise ratio.
• Flexible digital interface supporting daisy-chaining 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 that the specific ordering suffix matches the required packaging format and thermal characteristics. Confirm that the voltage reference and power supply levels align with the specified operational ranges before integration into the design.

Selection Notes

Select this model when high resolution and moderate speed are required for differential signals. Ensure the system design accommodates the external reference voltage requirements and provides adequate decoupling for the VDD and VIO pins to maintain signal integrity.

Part Context

This component belongs to the AD7989 family of PulSAR ADCs, which includes variants with different throughput rates such as the AD7989-1. The family shares similar architectural features but varies in sampling speed and power consumption profiles to suit different application bandwidths.

Replacement Considerations

The AD7989-1 serves as a lower-speed alternative within the same family. Other members of the PulSAR series may offer different resolutions or interface options but require verification of pin compatibility and electrical specifications.