AD7989-1BCPZ-RL7

Overview

The AD7989-1BCPZ-RL7 is an 18-bit, 100 kSPS PulSAR analog-to-digital converter (ADC) from Analog Devices. It features a true differential analog input voltage range of ±VREF with VREF between 2.4 V and 5.1 V. The device operates on a single 2.5 V supply with a 1.8 V to 5 V logic interface via the VIO pin. Power dissipation is 400 µW at 100 kSPS (VDD only) and 700 µW total. It offers 99 dB dynamic range, 98 dB SNR, and -119 dB THD at fIN = 1 kHz with VREF = 5 V. The component is housed in a 3 mm × 3 mm 10-Lead LFCSP package and supports operation from −40°C to +85°C.

Feature Summary

• Zero latency architecture with immediate data availability after conversion completion.
• Proprietary serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards.
• Single-supply operation with flexible digital logic interface voltages.

Applications

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

Procurement Notes

Verify the specific suffix RL7 corresponds to reel packaging when sourcing. Confirm that the BC grade meets required accuracy specifications for the application. Ensure the LFCSP-10 footprint matches the PCB layout design. Check RoHS compliance status before finalizing procurement orders.

Selection Notes

Select this model for applications requiring high resolution and low power consumption. The 100 kSPS throughput suits moderate-speed data acquisition tasks. Consider the AD7989-5 variant if higher sampling rates are necessary. Ensure external reference voltage compatibility within the 2.4 V to 5.1 V range.

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 AD7989-5BRMZ but differs in maximum throughput speed. The family utilizes successive approximation register technology for precise signal digitization.

Replacement Considerations

The AD7989-5BRMZ is a related part within the same datasheet offering 500 kSPS throughput. Verify pinout compatibility and performance differences before substitution.