Analog Devices Inc. AD7714YRUZ-REEL

Overview

AD7714YRUZ-REEL from Analog Devices is a 24-bit sigma-delta analog-to-digital converter (ADC) with integrated programmable-gain amplifier (PGA), digital filter, and three-wire serial interface. It delivers 24-bit no-missing-codes performance, ±0.001% integral nonlinearity, and operates across –40°C to +105°C at 2.7–3.3 V or 4.75–5.25 V supply. It serves as a complete analog front end for precision low-frequency transducer signal conditioning in portable industrial instruments and loop-powered systems.

For engineers reviewing the AD7714YRUZ-REEL datasheet, AD7714YRUZ-REEL pinout, AD7714YRUZ-REEL application, or AD7714YRUZ-REEL equivalent, key selection criteria include its 24-bit resolution with guaranteed no missing codes at ≤60 Hz filter notch, five-channel pseudo-differential or three-channel fully differential input configuration, Schmitt-triggered SCLK/DIN inputs, and 24-lead TSSOP package with 0.65 mm pitch.

Technical Context

The AD7714YRUZ-REEL employs a charge-balancing sigma-delta architecture with on-chip modulator and programmable digital filter. Its first filter notch is software-configurable to set cutoff frequency and settling time-enabling rejection of 50/60 Hz line interference with ≥100 dB normal-mode and ≥150 dB common-mode attenuation at matched notches.

It integrates a five-channel analog input multiplexer feeding a PGA with selectable gains of 1–128, supporting both unipolar (0 to +V_REF/GAIN) and bipolar (±V_REF/GAIN) input ranges. Calibration registers allow read/write access to zero- and full-scale coefficients, enabling system-level self- and background calibration without external hardware.

Key Specifications

Pinout & Package

AD7714YRUZ-REEL is housed in a 24-lead thin shrink small outline package (TSSOP), 4.4 mm × 7.8 mm, 0.65 mm lead pitch, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7799BRUZ and ADS124S08IPWR, AD7714YRUZ-REEL uniquely combines extended temperature operation, Schmitt-triggered serial inputs for noisy environments, five configurable analog inputs, and software-tunable digital filter notch-making it optimal for ruggedized portable and loop-powered instrumentation where signal integrity and calibration flexibility are critical.

Availability

AD7714YRUZ-REEL is available at Aetrix Electronics and suitable for portable industrial instruments, loop-powered systems, and pressure transducer interfaces requiring stable component supply across extended temperature and long product lifecycles.

Supply support for AD7714YRUZ-REEL 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 AD7714YRUZ-REEL belongs to Analog Devices' precision sigma-delta ADC product line, designed specifically for low-frequency, high-resolution measurement applications requiring integrated signal conditioning, robust noise rejection, and reliable operation in demanding industrial environments.

FAQ

What is the maximum sampling rate of the AD7714YRUZ-REEL at PGA gain = 1?

The AD7714YRUZ-REEL achieves a maximum sampling rate of f_{CLK_IN}/64 when PGA gain is set to 1. With the maximum supported master clock frequency of 2.5 MHz, this yields 39.06 kSPS. However, usable throughput is constrained by filter settling: at ≤60 Hz notch, effective update rate drops to ~10–15 SPS to maintain 24-bit no-missing-codes performance. The AD7714YRUZ-REEL's architecture prioritizes resolution and noise rejection over speed in precision measurement use cases.

Does the AD7714YRUZ-REEL support both unipolar and bipolar input configurations?

Yes, the AD7714YRUZ-REEL supports both unipolar and bipolar input modes via the B/U bit in the Filter High register. In unipolar mode (B/U = 1), the input range is 0 to +V_REF/GAIN; in bipolar mode (B/U = 0), it is ±V_REF/GAIN. This flexibility allows direct interfacing with both single-ended transducer outputs and differential bridge sensors. The AD7714YRUZ-REEL maintains ±0.001% INL in both modes when operating within specified filter and gain conditions.

How does the AD7714YRUZ-REEL achieve 50/60 Hz rejection without external filters?

The AD7714YRUZ-REEL achieves 50/60 Hz rejection through its programmable digital sinc³ filter, whose first notch frequency is software-configurable. When set to 10 Hz, 25 Hz, 50 Hz, or 60 Hz (±0.02×f_NOTCH), it delivers ≥100 dB normal-mode and ≥150 dB common-mode rejection at those frequencies-eliminating need for external analog notch filters. This capability is intrinsic to the AD7714YRUZ-REEL's sigma-delta architecture and on-chip filter design.

What is the purpose of the BUF bit in the Setup register of the AD7714YRUZ-REEL?

When BUF = 1, the AD7714YRUZ-REEL enables its internal input buffer, extending the absolute common-mode input voltage range to AGND + 50 mV to AVDD – 1.5 V-critical for interfacing with ratiometric sensors or bridges where common-mode voltage exceeds AVDD/2. When BUF = 0, the input stage is unbuffered, offering lower noise (<150 nV_rms) but narrower common-mode range (AGND to AVDD). This trade-off is configurable per application in the AD7714YRUZ-REEL.

Can the AD7714YRUZ-REEL perform system calibration without external equipment?

Yes, the AD7714YRUZ-REEL supports full system calibration using only its internal reference and programmable burnout current. It provides dedicated calibration registers for zero-scale, positive full-scale, and negative full-scale coefficients, accessible via the serial interface. Users can execute self-calibration, system calibration (with external known inputs), or background calibration-all without external DACs or precision references. This capability is built into the AD7714YRUZ-REEL's register map and control logic.