AD7715ANZ-5

Overview

The AD7715ANZ-5 is a single-channel, 16-bit Sigma-Delta analog-to-digital converter (ADC) designed for low-frequency measurement applications. It operates from a single 5 V analog supply and accepts differential inputs with programmable gains of 1, 2, 32, and 128. The device features an on-chip digital filter with programmable output update rates and supports serial interfaces including SPI, QSPI, Microwire, and three-wire modes. It provides high accuracy with ±0.0015% integral nonlinearity and guarantees 16 bits of no missing codes performance.

Feature Summary

• Integrates a charge-balancing ADC with a proprietary programmable gain front end to directly accept low-level transducer signals.
• Includes an on-chip digital filter with programmable notch frequencies to adjust cutoff and output update rates.
• Supports self-calibration and system calibration options to eliminate zero-scale, full-scale, and temperature drift errors.
• Features a versatile serial interface compatible with microcontrollers, DSPs, and isolated systems.

Applications

• Strain gauge and pressure measurement systems
• Thermocouple and temperature measurement circuits
• Smart transmitters and industrial process control
• Chromatography data acquisition

Procurement Notes

Verify the specific suffix 'ANZ-5' against the manufacturer's current ordering guide to confirm package type and voltage rating. Ensure the required operating voltage matches the 5 V specification. Confirm RoHS compliance status through official documentation before procurement.

Selection Notes

Select this component for single-channel applications requiring high precision at low sampling speeds. Consider the available gain settings to match the expected input signal range. Verify that the host system can support the required serial communication protocol and master clock frequencies.

Part Context

This part belongs to the AD7715 family of complete analog front ends. It shares core architecture with variants offering different supply voltages or packaging options. The AD7715 series is widely used in instrumentation where low power consumption and high resolution are critical requirements.

Replacement Considerations

Direct pin-compatible alternatives within the same family include the AD7715ARZ-5 and AD7715ARUZ-5. These variants offer identical electrical specifications but differ in package style, such as SOIC or TSSOP, compared to the PDIP package of the ANZ variant.

FAQ

What are the supported gain settings for the programmable front end?

The AD7715 supports four programmable gain settings: 1, 2, 32, and 128.

How does the device handle calibration errors?

The device includes on-chip registers for self-calibration and system calibration to remove zero-scale, full-scale, and temperature drift errors.

What is the maximum master clock frequency specified?

The specified maximum master clock frequency is 2.4576 MHz, though it is guaranteed to operate down to 400 kHz.