AD7980ARMZRL7

Overview

The AD7980ARMZRL7 is a 16-bit, 1 MSPS PulSAR analog-to-digital converter (ADC) from Analog Devices Inc. It operates on a single 2.5 V supply with a separate digital interface voltage ranging from 1.8 V to 5 V. The device features a pseudo-differential input range of 0 V to VREF and supports SPI, QSPI, Microwire, and DSP interfaces. Key performance metrics include an INL of ±0.6 LSB typical, SNR of 91.5 dB at 5 V reference, and power dissipation of 7 mW total at 1 MSPS. It is housed in a 10-lead MSOP package and rated for operation between −40°C and +125°C.

Feature Summary

• Zero latency architecture with no missing codes
• Daisy-chain capability using SDI input for multiple ADCs
• Low power consumption scaling linearly with throughput
• Wide operating temperature range

Applications

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

Procurement Notes

Verify the specific grade (A or B) required for your application, as linearity and gain error specifications differ between grades. Confirm that the RL7 suffix corresponds to tape and reel packaging when placing orders. Ensure the host system logic voltage matches the VIO supply range of 1.8 V to 5 V for proper interface compatibility.

Selection Notes

Select this component for applications requiring high accuracy with low power consumption. The A grade offers tighter integral nonlinearity specifications compared to the B grade. Consider the external reference voltage requirements, as dynamic performance varies with VREF. The pseudo-differential input simplifies front-end design by eliminating the need for a differential driver amplifier.

Part Context

This part belongs to the AD7980 family of 16-bit SAR ADCs. It shares architectural similarities with other PulSAR devices but is distinct in its specific pinout and interface options. The ARMZ suffix indicates the MSOP package variant, while RL7 denotes the reel packaging format used for automated assembly processes.

Replacement Considerations

The AD7980BRMZRL7 is a pin-compatible alternative within the same family, offering different linearity specifications due to the B grade classification. Other members of the PulSAR family may require schematic modifications due to differing pinouts or interface protocols.