AD7724AST-REEL

ADCs/DACs - Special Purpose Overview

The AD7724AST-REEL is a dual seventh-order sigma-delta modulator from Analog Devices, housed in a 48-lead LQFP package. It operates on a 5 V supply (AVDD/DVDD) and a 3 V digital output supply (DVDD1). The device features two independent modulators with a 13 MHz master clock frequency and a 90 dB dynamic range. Input ranges are selectable between 0 V to +2.5 V or ±1.25 V. It includes an on-chip 2.5 V reference, serial interface outputs, and supports operation from –40 °C to +85 °C.

ADCs/DACs - Special Purpose Feature Summary

• Dual seventh-order sigma-delta modulators with 13 MHz master clock
• 90 dB typical Signal-to-(Noise + Distortion) ratio
• On-chip 2.5 V voltage reference with external buffer capability
• 3 V/5 V compatible logic outputs via DVDD1 selection

ADCs/DACs - Special Purpose Applications

• High-resolution data acquisition systems requiring continuous sampling
• Industrial process control instrumentation
• Medical equipment signal conditioning
• Audio and vibration analysis front-ends

ADCs/DACs - Special Purpose Procurement Notes

Verify the REEL suffix indicates tape-and-reel packaging for automated assembly. Confirm the A version temperature grade (-40 °C to +85 °C) matches system requirements. Ensure DVDD1 is set to 3 V or 5 V to match downstream logic levels. Check RoHS compliance status for environmental regulations.

ADCs/DACs - Special Purpose Selection Notes

Select this component when dual-channel high-linearity modulation is needed without external sample-and-hold circuits. Choose if a 13 MHz clock speed and 90 dB dynamic range are sufficient. Consider the 48-lead LQFP footprint for PCB layout constraints. Verify input impedance requirements against source drive capabilities.

ADCs/DACs - Special Purpose Part Context

The AD7724 is part of the AD7724 series of dual CMOS modulators. The AST designation specifies the industrial temperature range and plastic LQFP package. The -REEL suffix denotes the specific reel packaging format for surface-mount technology assembly lines.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements within the same family include the AD7724AST. Verify that any substitute maintains the 13 MHz clock limit and 5 V supply requirement. Check if the alternative offers similar dynamic range specifications.