AD7980ACPZ-RL

Overview

The AD7980ACPZ-RL is a 16-bit, 1 MSPS PulSAR analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single 2.5 V supply with a logic interface range of 1.8 V to 5 V. The device features a pseudo-differential input range of 0 V to VREF and an external reference voltage between 2.4 V and 5.1 V. Key performance metrics include a typical Signal-to-Noise Ratio (SNR) of 91.5 dB, Total Harmonic Distortion (THD) of −114 dB, and Integral Nonlinearity (INL) of ±0.6 LSB typical at 25°C. Power consumption is 7 mW at 1 MSPS throughput. It utilizes a proprietary serial interface compatible with SPI/QSPI/MICROWIRE/DSP standards.

Feature Summary

• Zero latency architecture providing immediate data availability after conversion completion.
• Proprietary serial interface supporting daisy-chaining of multiple ADCs on a single bus.
• Flexible digital interface compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic levels via separate VIO supply.
• 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 package variant, as the AD7980 series includes both MSOP and LFCSP options. Confirm that the A-grade specifications meet the required linearity and noise thresholds for the application. Ensure the external reference voltage source supports the 2.4 V to 5.1 V input range and provides adequate load current for the desired sampling rate.

Selection Notes

Select this component when a high-resolution, low-power SAR ADC is required for battery-operated or space-constrained designs. The separate VIO supply allows compatibility with various host microcontroller logic levels without level shifting. Consider the thermal resistance characteristics if operating at maximum throughput in enclosed environments.

Part Context

The AD7980 belongs to the PulSAR family of precision SAR ADCs from Analog Devices. It is designed for applications requiring high accuracy and speed within a compact footprint. The device integrates a 16-bit sampling ADC and a versatile serial interface port, eliminating the need for external driver amplifiers in many signal chain configurations.

Replacement Considerations

Check the Ordering Guide for pin-compatible alternatives such as the AD7980ARMZ or other variants within the same family that may offer different packaging or grade specifications.