AD7767BRUZ-RL7

Overview

The AD7767BRUZ-RL7 is a single-channel, 24-bit oversampled successive approximation (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates with a 2.5 V analog and digital supply voltage and accepts an external reference voltage between 2.4 V and 5 V. The device provides a maximum output data rate of 128 kSPS at a main clock frequency of 1.024 MHz. Key performance metrics include a dynamic range of 109.5 dB, a signal-to-noise ratio of 108.5 dB, and a total harmonic distortion of −118 dB. Power consumption is rated at 15 mW during operation. The component features integral nonlinearity of ±7.6 ppm maximum and zero error drift of 15 nV/°C. It is housed in a 16-lead TSSOP package and supports an operating temperature range from −40°C to +105°C.

Feature Summary

• Oversampled SAR architecture with integrated linear-phase FIR filter for noise reduction
• Differential analog input structure with high common-mode rejection capabilities
• Flexible serial interface supporting daisy-chaining and multi-device synchronization
• Low power consumption with dedicated power-down functionality

Applications

• Low power PCI/USB data acquisition systems
• Low power wireless acquisition systems
• Vibration analysis instrumentation
• High precision medical acquisition

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing components. Confirm that the BRUZ designation corresponds to the industrial temperature grade and TSSOP-16 package variant. Ensure compatibility with the required logic voltage levels on the VDRIVE pin before finalizing procurement orders.

Selection Notes

Select this model for applications requiring high DC accuracy and low power consumption within a compact footprint. Consider the AD7767-1 or AD7767-2 variants if lower output data rates of 64 kSPS or 32 kSPS are sufficient, as they offer improved dynamic range and reduced power dissipation compared to the standard 128 kSPS configuration.

Part Context

This component belongs to the AD7767 family of 24-bit ADCs designed for ultralow power data acquisition. It shares architectural similarities with the AD7766 series but offers higher resolution and different filtering characteristics. The device is intended to replace older, higher-power delta-sigma converters in portable and battery-operated measurement instruments where size and energy efficiency are critical constraints.

Replacement Considerations

Direct functional replacements within the same family include the AD7767-1 and AD7767-2, which share the same package and interface but operate at lower sampling rates.