Analog Devices Inc. AD7616BSTZ-RL

Overview

AD7616BSTZ-RL from Analog Devices is a 16-channel, dual-simultaneous-sampling, 16-bit bipolar-input data acquisition system (DAS) with true ±10 V input range, 1 MSPS per channel pair throughput, and on-chip 2.5 V reference. It integrates dual SAR ADCs, analog input clamping (±21 V tolerance), 1 MΩ input impedance, and first-order antialiasing filters-enabling direct connection to industrial sensors without external op amps or bipolar supplies.

For engineers reviewing the AD7616BSTZ-RL datasheet, AD7616BSTZ-RL pinout, AD7616BSTZ-RL application, or AD7616BSTZ-RL equivalent, key selection considerations include simultaneous dual-channel sampling integrity, oversampling-enabled 92 dB SNR at 500 kSPS, hardware-selectable ±2.5/±5/±10 V ranges, SPI/parallel interface flexibility, and 80-lead LQFP package compatibility with high-density industrial PCB layouts.

Technical Context

The AD7616BSTZ-RL implements two independent 16-bit charge redistribution SAR ADC cores with fully synchronized conversion control via shared CONVST and BUSY signals. Its dual-sampling architecture maintains <100 ns phase delay matching between channel pairs across all input ranges (±10 V, ±5 V, ±2.5 V), ensuring precise time-aligned acquisition for multiphase systems.

Digital configuration is supported in both hardware mode (via HW_RNGSEL0/1, CHSEL0–2, SEQEN) and software mode (register-based), with flexible sequencer operation including burst mode and programmable channel ordering. The integrated digital filter enables 2× oversampling for SNR improvement from 90.5 dB to 92 dB, while CRC error checking secures serial transfers.

Key Specifications

Pinout & Package

AD7616BSTZ-RL is housed in an 80-lead LQFP package (12 mm × 12 mm, 0.5 mm pitch) with separate analog/digital ground planes (AGND/DGND), dedicated reference decoupling pins (REFCAP, REFGND), and dual analog input banks (V0A–V7A and V0B–V7B) each with associated ground pins (VxAGND/VxBGND).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar data acquisition system applications.

Compared with AD7616BSTZ-RL, AD7606C-18 trades integrated oversampling and reference for higher raw resolution, while LTC2348-16 sacrifices analog integration for marginal speed gain-making AD7616BSTZ-RL optimal for self-contained, industrial-grade DAS where supply simplicity, transient robustness, and SNR consistency are prioritized.

Availability

AD7616BSTZ-RL is available at Aetrix Electronics and suitable for power line monitoring, protective relaying, and multiphase motor control requiring stable component supply across extended temperature ranges (−40°C to +125°C) and long product lifecycles.

Supply support for AD7616BSTZ-RL 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, headquartered in Norwood, MA, with R&D and manufacturing operations worldwide.

The AD7616BSTZ-RL belongs to Analog Devices' precision data acquisition portfolio, designed specifically for industrial automation, energy infrastructure, and test equipment demanding simultaneous multichannel sampling, high noise immunity, and minimal external component count.

FAQ

What is the maximum sample rate per channel for AD7616BSTZ-RL?

The AD7616BSTZ-RL achieves 1 MSPS per channel pair (i.e., 1 million samples per second for each simultaneously sampled ADC A/B pair). With dual 16-bit SAR cores and shared CONVST control, it delivers 2 million total samples per second across its 16 channels in interleaved or sequenced modes-enabling real-time capture of 500 kHz bandwidth signals per channel under Nyquist criteria.

Does AD7616BSTZ-RL require external op amps for sensor interfacing?

No. The AD7616BSTZ-RL features a 1 MΩ analog input impedance, ±21 V input clamp protection, and integrated first-order antialiasing filters-allowing direct connection to resistive sensors, shunt current monitors, and isolated voltage outputs without external driver amplifiers or protection networks. Its single 5 V analog supply further eliminates need for bipolar op amp rails.

How does the oversampling mode improve performance in AD7616BSTZ-RL?

AD7616BSTZ-RL's oversampling mode applies a digital filter to average multiple conversions, improving SNR by up to 1.5 dB (OSR=2) or 3 dB (OSR=4). At OSR=2 and 500 kSPS effective rate, SNR increases from 90.5 dB to 92 dB-equivalent to ~0.25 extra effective bits-without modifying analog front-end components or layout, making it ideal for high-dynamic-range power quality analysis.

Can AD7616BSTZ-RL operate with an external reference?

Yes. The AD7616BSTZ-RL supports both internal (2.5 V) and external reference configurations. When REFSEL is logic low, the internal reference is disabled and a 2.5 V external reference must be applied to the REFINOUT pin. This allows traceable calibration using metrology-grade references while retaining all other AD7616BSTZ-RL functionality, including oversampling and sequencer operation.

What package type and lead count does AD7616BSTZ-RL use?

AD7616BSTZ-RL uses an 80-lead LQFP package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad. This package provides robust thermal performance (θJA = 41°C/W), separates analog/digital grounds (AGND/DGND), and allocates dedicated pins for reference decoupling (REFCAP, REFGND), analog input grounding (VxAGND/VxBGND), and dual-bank channel routing-facilitating clean layout for high-precision mixed-signal systems.