AD7960BCPZ-RL7

Overview

The AD7960BCPZ-RL7 is an 18-bit, 5 MSPS PulSAR differential analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features a successive approximation register (SAR) architecture with no pipeline delay or latency. The device supports true differential analog input voltage ranges of ±4.096 V or ±5 V and operates on dual power supplies: VDD1 at 5 V and VDD2/VIO at 1.8 V. Key performance metrics include a signal-to-noise ratio (SNR) of 99 dB, total harmonic distortion (THD) of −117 dB, integral nonlinearity (INL) of ±0.8 LSB typical, and differential nonlinearity (DNL) of ±0.5 LSB typical. Power dissipation varies from 39 mW to 64.5 mW depending on the reference buffer configuration and clock mode. It utilizes a serial LVDS interface for data output and is housed in a 32-lead, 5 mm × 5 mm LFCSP package.

Feature Summary

• High-resolution 18-bit SAR architecture ensuring no missing codes across the full operating temperature range.
• Low-latency conversion process without pipeline delay, suitable for multiplexed channel applications.
• Integrated internal reference buffer capable of generating 4.096 V from a 2.048 V external input.
• Flexible digital interface supporting both self-clocked and echoed clock modes via LVDS.

Applications

• Digital imaging systems
• Digital X-rays
• Computed tomography
• MRI gradient control

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the reel packaging format required for your assembly line. Confirm that the component meets RoHS compliance standards applicable to your region. Ensure the supply chain source provides valid manufacturer traceability documentation to guarantee authenticity and prevent counterfeit risks during integration.

Selection Notes

Select this component when high linearity and low noise are critical for 18-bit precision requirements. The absence of latency makes it preferable over pipelined ADCs for multi-channel multiplexing scenarios. Evaluate power consumption constraints carefully, as enabling the internal reference buffer increases dissipation significantly compared to using an external reference scheme.

Part Context

This part belongs to the AD7960 family of PulSAR ADCs, designed for high-speed, high-precision data acquisition. It complements other devices in the series such as the AD7961 and AD7982, offering a balance between throughput speed and resolution. The LFCSP package facilitates compact PCB layouts for space-constrained industrial and medical instrumentation designs.

Replacement Considerations

Direct pin-compatible substitutes within the same family include the AD7960BCPZ. For different packaging or tape-and-reel variations, verify electrical specifications match exactly. Cross-family replacements require careful evaluation of interface timing and power supply requirements.