AD7777ARZ-REEL

Overview

The AD7777ARZ-REEL is a quad-channel, 10-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It operates on a single +5 V supply and features a parallel data interface with four single-ended analog inputs. The device supports simultaneous sampling of two channels via its control register configuration. Key electrical specifications include a maximum differential nonlinearity of ±1 LSB, a signal-to-noise and distortion ratio of -56 dB, and a power dissipation of 75 mW in normal mode. It functions within an industrial temperature range of -40°C to +85°C and is housed in a 28-pin SOIC package.

Feature Summary

• Supports simultaneous sampling of two independent channels for synchronized data acquisition.
• Integrates a programmable track-and-hold amplifier capable of handling input frequencies up to the Nyquist limit.
• Includes an internal voltage reference output that provides biasing for the analog input channels.
• Features a configurable BUSY/INT status pin that can operate as either a busy indicator or an interrupt signal.

Applications

• Digital signal processing systems requiring voice recognition and echo cancellation
• Adaptive filtering applications utilizing high-speed data conversion
• Industrial control systems interfacing with DSP machines such as TMS320 or ADSP families

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm packaging type and quantity. Ensure the component meets RoHS compliance requirements for your region. Confirm that the lead time and availability align with production schedules before finalizing orders. Cross-reference the part number with authorized distributors to validate authenticity and sourcing integrity.

Selection Notes

Select this component when a quad-channel ADC with simultaneous sampling capabilities is required. Ensure the system design accommodates the 10-bit resolution and parallel interface timing constraints. Verify that the +5 V supply voltage matches the system power architecture. Consider the thermal impedance and power dissipation characteristics for adequate heat management in the application environment.

Part Context

This component belongs to the AD7776/AD7777/AD7778 family of high-speed SAR ADCs. The AD7777 variant specifically provides four input channels, distinguishing it from the single-channel AD7776 and the eight-channel AD7778. All variants share identical core conversion architectures and digital interfaces, differing primarily in channel count and package options.

Replacement Considerations

Public confirmed substitute part numbers: AD7777AN, AD7777AR.