AD7730LBRUZ-REEL7

Overview

The AD7730LBRUZ-REEL7 is a 24-bit Sigma-Delta analog-to-digital converter (ADC) from Analog Devices, designed for bridge transducer applications. It features two buffered differential programmable gain inputs and operates on a single +5 V supply. The device integrates a 6-bit DAC for offset removal and supports serial communication via SPI-compatible interfaces. Key performance metrics include an integral nonlinearity of 18 ppm FSR, offset drift of 0.5 µV/°C in CHP=0 mode, and power dissipation up to 125 mW. It is housed in a 24-lead TSSOP package.

Feature Summary

• 24-bit resolution with no missing codes
• Two-channel buffered differential programmable gain amplifier (PGA)
• On-chip 6-bit DAC for tare voltage removal
• Programmable digital filter with FASTStep™ mode

Applications

• Weigh scales
• Pressure measurement systems

Procurement Notes

Verify the specific suffix BRUZ indicates the TSSOP-24 package and REEL7 denotes tape-and-reel packaging. Confirm the L variant specifications, particularly the lower master clock frequency requirement compared to the standard AD7730, during component sourcing.

Selection Notes

Select this model for applications requiring low drift and high precision in bridge sensor interfaces. Ensure the system design accommodates the specified 2.4576 MHz master clock input unique to the AD7730L variant. Verify power supply constraints align with the 5 V nominal AVDD requirement.

Part Context

This component belongs to the AD7730 family of bridge transducer ADCs. The AD7730L variant is distinguished by its specific clock frequency specification and potentially different thermal or electrical characteristics compared to the standard AD7730, while sharing the same functional architecture and pinout.

Replacement Considerations

Direct replacements within the same package must match the 24-bit Sigma-Delta architecture and TSSOP-24 form factor. Verify compatibility with existing calibration routines due to potential differences in offset drift parameters between variants.