AD7709BRUZ-REEL7

Analog To Digital Converters (ADC) Overview

The AD7709BRUZ-REEL7 is a complete analog front end for low frequency measurement applications, featuring a 16-bit Sigma-Delta ADC with a programmable gain front end. It operates from a single 3 V or 5 V supply and accepts fully differential or pseudo-differential input signal ranges from ±20 mV to ±2.56 V. The device includes three switchable matched excitation current sources (IEXC1/IEXC2 at 200 mA nominal, IEXC3 at 25 mA nominal), two low-side power switches, and a 4-bit digital I/O port. It utilizes a 32.768 kHz crystal oscillator with an on-chip PLL and supports software-programmable output data rates up to 105 Hz.

Analog To Digital Converters (ADC) Feature Summary

• Simultaneous 50 Hz and 60 Hz line frequency rejection capability at the 20 Hz update rate.
• VREF Select feature enabling both absolute and ratiometric measurement configurations.
• ISOURCE Select functionality providing three internally matched, ratioed excitation current sources.
• Rail-to-rail input buffer combined with a programmable gain amplifier for direct transducer interfacing.

Analog To Digital Converters (ADC) Applications

• Sensor Measurement
• Temperature Measurement
• Pressure Measurements
• Weigh Scales
• Portable Instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature grade. Confirm that the component meets all necessary environmental compliance standards for the intended deployment environment before finalizing procurement decisions.

Analog To Digital Converters (ADC) Selection Notes

Select this component when designing systems requiring high-resolution conversion of low-frequency signals without external signal conditioning. Ensure the application voltage aligns with the specified 3 V or 5 V single-supply operation requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the AD7709 series of precision analog-to-digital converters manufactured by Analog Devices Inc. It is specifically engineered for applications demanding high accuracy in low-speed signal acquisition environments.

Analog To Digital Converters (ADC) Replacement Considerations

Consult official documentation for verified substitute part numbers. Do not assume functional equivalence with other models without verifying pin compatibility and electrical specifications.

Analog To Digital Converters (ADC) FAQ

What is the maximum output data rate supported by the AD7709?

The device supports a maximum output data rate of 105 Hz.

How many excitation current sources are integrated into the device?

The AD7709 integrates three switchable, matched excitation current sources.

Can the AD7709 handle both unipolar and bipolar input signals?

Yes, the device accepts unipolar and bipolar input signal ranges via its programmable gain front end.