AD7714ARS-5

Overview

The AD7714ARS-5 is a complete analog front end for low-frequency measurement applications, manufactured by Analog Devices Inc. It employs a sigma-delta conversion technique to realize up to 24 bits of no missing codes performance. The device features five-channel programmable gain front ends with gains from 1 to 128 and accepts low-level signals directly from transducers. It operates from a single +5 V supply (AVDD = +4.75 V to +5.25 V) within the -40 °C to +85 °C temperature range. The part is housed in a 28-lead shrink small outline package (SSOP).

Feature Summary

• Five-channel programmable gain front end supporting gains from 1 to 128.
• Configurable as three fully differential inputs or five pseudo-differential inputs.
• On-chip self-calibration and system calibration options to eliminate endpoint errors.
• Three-wire serial interface compatible with SPI, QSPI, MICROWIRE, and DSP systems.

Applications

• Portable industrial instruments
• Portable weigh scales
• Loop-powered systems
• Pressure transducers

Procurement Notes

Verify the specific ordering suffix RS-28 to confirm the SSOP package type. Ensure the AVDD supply voltage matches the required +5 V specification for this variant. Confirm that the operating temperature range aligns with the -40 °C to +85 °C rating provided in the datasheet before finalizing procurement.

Selection Notes

Select the AD7714ARS-5 when a 28-lead SSOP surface-mount package is required for space-constrained designs. This model provides the standard A version specifications at +5 V operation. Consider the Y versions if an extended temperature range up to +105 °C or lower power consumption is necessary for the application environment.

Part Context

The AD7714ARS-5 belongs to the AD7714 family of signal conditioning ADCs designed for high-precision measurements. It integrates a charge balancing ADC, programmable gain amplifier, and digital filter into a single CMOS component. This integration reduces the need for external signal conditioning components in microcontroller-based systems.

Replacement Considerations

Direct replacements include other variants within the AD7714 series such as the AD7714AR-5 for SOIC packages or the AD7714YN for through-hole DIP packages. For extended temperature ranges, the AD7714YRUZ-REEL7 offers similar functionality in a TSSOP package.