AD7723BSZ

Overview

The AD7723BSZ is a 16-bit, high-speed CMOS sigma-delta analog-to-digital converter manufactured by Analog Devices. It operates from a single 5 V supply and delivers an output word rate up to 1.2 MSPS with decimation ratios of 16 or 32. The device features a built-in 2.5 V voltage reference and supports both parallel and serial digital interfaces for flexible system integration. It includes programmable low-pass and band-pass digital filters with linear phase characteristics. The component is housed in a 44-lead MQFP package and is specified for operation across the industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated on-chip 2.5 V voltage reference eliminates the need for external components.
• Configurable digital filter provides selectable low-pass or band-pass frequency responses.
• Flexible interface architecture supports both parallel and serial data communication modes.
• Continuous sampling architecture removes the requirement for external sample-and-hold circuits.

Applications

• High-speed audio processing systems
• Industrial process control instrumentation
• Vibration monitoring and analysis equipment

Procurement Notes

Verify component authenticity through authorized distribution channels due to potential availability constraints. Confirm that the specific B-version suffix matches the required performance specifications. Ensure proper handling procedures are followed during installation to prevent electrostatic discharge damage to the sensitive internal circuitry.

Selection Notes

Select this component when high throughput combined with 16-bit resolution is required. Evaluate the clock input requirements carefully as the maximum frequency depends on the selected power mode. Consider the available interface options to ensure compatibility with the target digital signal processor or microcontroller architecture.

Part Context

This part belongs to the AD7723 series of sigma-delta converters. It shares functional similarities with other devices in the family but offers distinct speed capabilities. The BSZ designation indicates the specific package type and temperature rating configuration within the manufacturer's product lineup.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify pinout and electrical compatibility if considering alternative manufacturers for this application.

FAQ

How is the crystal oscillator enabled?

The crystal oscillator is enabled by tying the XTAL_OFF pin logic low. An external clock source can be used instead by setting XTAL_OFF high.

What determines the digital filter response?

The digital filter response is determined by the SLP pin state and the SLDR pin state, which select between low-pass or band-pass modes and different decimation ratios.

Can the device operate in standby mode?

Yes, the device enters a standby mode when the STBY pin is set to a logic high, reducing idle power consumption significantly.