AD7980BRMZ

Overview

The AD7980BRMZ is a 16-bit, 1 MSPS PulSAR analog-to-digital converter (ADC) housed in a 10-lead MSOP package. It operates from a single 2.5 V supply with a logic interface compatible with 1.8 V to 5 V levels via the separate VIO pin. The device features a pseudo-differential input range of 0 V to VREF, where VREF can be set between 2.4 V and 5.1 V. Key performance metrics include a typical Integral Nonlinearity (INL) of ±0.6 LSB and a Signal-to-Noise Ratio (SNR) of 91.5 dB at a 5 V reference. Power consumption scales linearly with throughput, reaching 7 mW total at 1 MSPS.

Feature Summary

• Zero-latency architecture providing immediate data availability after conversion completion.
• Versatile serial interface supporting SPI, QSPI, Microwire, and DSP modes with daisy-chain capability.
• Low power dissipation that scales linearly with the sampling rate.
• Wide operating temperature range specified from -40°C to +125°C.

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 specifications such as INL and SNR vary between grades. Confirm the package type matches the design, as the AD7980 series also includes LFCSP variants. Ensure the external reference voltage falls within the 2.4 V to 5.1 V range to maintain valid operation. Check the VIO supply requirements to ensure compatibility with the host system's logic levels.

Selection Notes

Select the AD7980BRMZ when a 16-bit resolution and 1 MSPS throughput are required in a compact MSOP package. Choose this component over higher-speed variants if power efficiency at moderate speeds is a priority. Consider the A-grade version for tighter linearity specifications or the B-grade for standard performance. Ensure the application supports an external reference voltage, as the device does not contain an internal reference.

Part Context

The AD7980 belongs to Analog Devices' PulSAR ADC family, which utilizes successive approximation register architecture. It is part of a broader portfolio including the AD7983 and AD7984, differentiated by sampling rates and bit resolutions. The BRMZ suffix indicates the commercial temperature range and MSOP packaging. This component serves as a high-performance solution for precision data acquisition tasks requiring low power consumption.

Replacement Considerations

The AD7980BCPZ-RL7 offers identical electrical performance but uses a 10-lead LFCSP package instead of MSOP. For applications requiring differential inputs, the AD7983BRMZ provides similar speed and resolution with a differential architecture. Higher resolution options like the AD7984BRMZ are available but operate at lower sampling rates.