AD7777ANZ

Overview

The AD7777ANZ is a high-speed, 10-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices Inc. It features four single-ended analog input channels and operates on a single +5 V power supply. The device utilizes a parallel data interface for communication with host processors. Key electrical specifications include a maximum sampling rate of 378 kS/s, a signal-to-noise ratio of 57 dB, and a differential nonlinearity of ±1 LSB. It supports both internal and external voltage reference options and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Four-channel simultaneous or sequential sampling capability
• Integrated track-and-hold amplifier for accurate high-frequency signal capture
• Configurable BUSY/INT status output for processor synchronization
• Low-power operation with dedicated power-down mode

Applications

• Digital signal processing systems requiring multi-channel acquisition
• Voice recognition and echo cancellation hardware
• Adaptive filtering applications
• Industrial process control instrumentation

Procurement Notes

Verify the specific package variant, as the 'AN' suffix denotes a PDIP-28 through-hole package. Confirm that the required channel count matches the quad-channel architecture of this model. Ensure the design accommodates the specified 5V logic levels and parallel bus timing requirements during integration.

Selection Notes

Select this component when four synchronized or independent 10-bit conversions are required at speeds up to 378 kS/s. It is suitable for designs needing a SAR architecture with low latency. Verify that the system can support the necessary parallel interface width and clocking frequencies defined in the datasheet timing specifications.

Part Context

This part belongs to the AD7776/AD7777/AD7778 family of high-speed ADCs. The AD7777 specifically provides four channels, distinguishing it from the single-channel AD7776 and the eight-channel AD7778. All members share identical core conversion architectures and control logic.

Replacement Considerations

The AD7777ARZ serves as the surface-mount equivalent using a 28-SOIC package. Other family members like the AD7776 or AD7778 offer different channel counts but share functional compatibility.