Analog Devices Inc. AD7714ARS-3REEL

Overview

AD7714ARS-3REEL from Analog Devices is a 24-bit sigma-delta analog-to-digital converter (ADC) with integrated programmable-gain amplifier (PGA), five-channel pseudo-differential or three-channel fully differential input architecture, and 3 V single-supply operation. It delivers 0.0015% integral nonlinearity, <150 nV rms input noise, and supports filter notch frequencies down to 10 Hz - ideal for high-precision transducer signal conditioning in portable industrial instruments and loop-powered systems.

For engineers reviewing the AD7714ARS-3REEL datasheet, AD7714ARS-3REEL pinout, AD7714ARS-3REEL application, or AD7714ARS-3REEL equivalent, key selection considerations include its 24-bit no-missing-codes performance at ≤60 Hz filter notches, 3 V supply compatibility, TSSOP-28 package footprint, and SPI/QSPI/MICROWIRE™-compatible three-wire serial interface for microcontroller integration.

Technical Context

The AD7714ARS-3REEL implements a charge-balancing sigma-delta ADC architecture with on-chip digital filtering, enabling programmable first-notch cutoffs (10–1000 Hz) and selectable settling times. Its front-end features a PGA with gains of 1–128, configurable for either three true differential inputs or five pseudo-differential inputs, all referenced to a dedicated differential reference input (REF IN±).

It operates from a single 3 V AVDD/DVDD supply, supports self- and system-calibration modes, and includes Schmitt-triggered SCLK/DIN inputs only in Y-grade variants - not applicable to the AD7714ARS-3REEL (A-grade, –40°C to +85°C). The device uses an external master clock (400 kHz–2.5 MHz) and provides DRDY, SYNC, and RESET signals for precise timing control in isolated or low-power systems.

Key Specifications

Pinout & Package

AD7714ARS-3REEL is housed in a 28-lead shrink small outline package (SSOP), 0.209-inch body width, with 0.025-inch lead pitch. Pin 1 marked by dot; exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-resolution sigma-delta ADC applications.

Compared with AD7718ARUZ and ADS1258IPW, the AD7714ARS-3REEL uniquely combines 3 V operation, integrated PGA, programmable digital filtering, and on-chip calibration registers - making it optimal for battery-powered, low-noise, single-transducer applications where layout area and supply headroom are constrained.

Availability

AD7714ARS-3REEL is available at Aetrix Electronics and suitable for portable industrial instruments, loop-powered transmitters, and pressure transducer signal conditioning requiring stable component supply and long-term manufacturability.

Supply support for AD7714ARS-3REEL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.

The AD7714 belongs to Analog Devices' precision sigma-delta ADC product line, engineered specifically for low-frequency, high-resolution measurement applications including weigh scales, pressure sensors, and portable instrumentation.

FAQ

What is the operating voltage range for the AD7714ARS-3REEL?

The AD7714ARS-3REEL operates from a single 3.0 V to 3.6 V supply on both AVDD and DVDD rails. This matches the AD7714-3 variant specification and ensures compatibility with standard 3 V logic families and battery-powered systems. Operation outside this range may compromise specified performance, including INL, noise, and power consumption metrics documented in the AD7714-3 datasheet section.

Does the AD7714ARS-3REEL support self-calibration?

Yes, the AD7714ARS-3REEL supports self-calibration, system calibration, and background calibration modes. These functions are controlled via its serial interface and allow users to eliminate zero-scale and full-scale errors without external equipment. Calibration coefficients are stored in on-chip registers accessible for read/write - a capability confirmed in the AD7714-3 datasheet's "System Calibration" and "Register Map" sections.

What package type is used for the AD7714ARS-3REEL?

The AD7714ARS-3REEL is supplied in a 28-lead shrink small outline package (SSOP), designated RS-28 in Analog Devices' ordering guide. It measures 10.2 mm × 5.3 mm with 0.65 mm lead pitch and features a standard JEDEC MS-012AC footprint. This package is distinct from the 24-lead TSSOP used in Y-grade variants and the 24-lead SOIC used in AR-3 variants.

Can the AD7714ARS-3REEL interface directly with a microcontroller's SPI port?

Yes, the AD7714ARS-3REEL features a three-wire serial interface fully compatible with SPI, QSPI, and MICROWIRE™ protocols. It uses CS, SCLK, DIN, and DOUT lines with standard timing (e.g., t5 ≤ 100 ns at 3 V), and supports mode 0/3 polarity/phase configurations. No level-shifting or protocol translation is required when interfacing with 3 V microcontrollers such as ARM Cortex-M0+ or MSP430FRxx series.

What is the maximum achievable effective resolution of the AD7714ARS-3REEL?

The AD7714ARS-3REEL guarantees 24-bit no missing codes performance when configured with filter notches ≤60 Hz. At higher notches (e.g., 100 Hz), resolution reduces to 22 bits; at 250 Hz, to 18 bits. This behavior is inherent to its sigma-delta architecture and digital filter design - confirmed in the "Static Performance" table of the AD7714-3 datasheet, where resolution is explicitly tied to selected filter cutoff.