AD7720BRUZ-REEL7

ADCs/DACs - Special Purpose Overview

The AD7720BRUZ-REEL7 is a 7th-order CMOS Sigma-Delta modulator manufactured by Analog Devices Inc. It converts analog input signals into a high-speed 1-bit data stream using a differential input range of 0 V to +2.5 V or ±1.25 V centered about a common-mode bias. The device operates from a single +5 V supply and features an on-chip 2.5 V voltage reference. Key electrical specifications include a 16-bit resolution, 90 dB dynamic range, and a master clock frequency up to 12.5 MHz. It is housed in a 28-lead TSSOP package and supports industrial operating temperatures from -40 °C to +85 °C.

ADCs/DACs - Special Purpose Feature Summary

• 7th-order Sigma-Delta modulation architecture with 16-bit resolution
• Integrated 2.5 V internal voltage reference with external reference capability
• Differential input range of 0 V to +2.5 V (Unipolar) or ±1.25 V (Bipolar)
• Master clock frequency support up to 12.5 MHz

ADCs/DACs - Special Purpose Applications

• High-resolution audio signal processing
• Precision measurement systems requiring low noise
• Industrial process control instrumentation
• Medical equipment requiring accurate analog-to-digital conversion

ADCs/DACs - Special Purpose Procurement Notes

Verify the REEL7 suffix indicates tape-and-reel packaging when sourcing components. Confirm that the B version meets the required -40 °C to +85 °C temperature range for your specific application environment. Ensure power supply decoupling matches the datasheet recommendations for AVDD and DVDD pins to maintain specified performance levels.

ADCs/DACs - Special Purpose Selection Notes

Select this component when a high-speed bit-stream output is required rather than a parallel digital word. The AD7720 eliminates the need for external sample-and-hold circuits due to its continuous sampling nature. Consider the 12.5 MHz maximum clock speed and the requirement for an external digital filter to reconstruct the original information from the density of ones in the output stream.

ADCs/DACs - Special Purpose Part Context

This part belongs to the AD7720 series of Sigma-Delta modulators. It is distinct from complete ADCs as it provides only the modulator stage, requiring external digital filtering. The BRUZ designation specifies the industrial temperature grade and the TSSOP-28 surface-mount package format.

ADCs/DACs - Special Purpose Replacement Considerations

Check for direct pin-compatible alternatives within the Analog Devices portfolio if lead times are critical. Verify that any substitute maintains the 12.5 MHz clock limit and 5 V supply requirement. Note that other members of the family may offer different resolutions or channel counts.