Analog Devices Inc. AD7352YRUZ

Overview

AD7352YRUZ from Analog Devices is a dual, 12-bit, successive approximation register (SAR) ADC with simultaneous sampling, 3 MSPS per channel throughput, differential input architecture, on-chip 2.048 V reference, and operation over −40°C to +125°C. It targets high-fidelity data acquisition in motion control and I/Q demodulation systems requiring matched channel timing and low inter-channel crosstalk.

For engineers reviewing the AD7352YRUZ datasheet, AD7352YRUZ pinout, AD7352YRUZ application, or AD7352YRUZ equivalent, key selection considerations include simultaneous dual-channel sampling latency, ADC-to-ADC isolation (−100 dB), differential input common-mode range (0.5 V to 1.9 V), SPI-compatible serial interface timing, and TSSOP-16 package thermal performance (θJA = 143°C/W).

Technical Context

The AD7352YRUZ integrates two independent SAR ADCs sharing a single 2.5 V VDD supply and featuring separate track-and-hold amplifiers with 110 MHz full-power bandwidth. Each ADC uses capacitive DAC-based conversion with no pipeline latency and precise CS-controlled sampling initiation on its falling edge.

Its analog input structure supports fully differential inputs (VINA±, VINB±) referenced to VCM ± VREF/2, with internal reference decoupling via REFA/REFB–REFGND pins and external reference overdrive capability (2.148 V to 2.5 V). Power management includes three modes: normal (26 mW at 3 MSPS), partial power-down (9.5 mW), and full power-down (16 μW).

Key Specifications

Pinout & Package

AD7352YRUZ is housed in a 16-lead thin shrink small outline package (TSSOP), 4.4 mm × 5.0 mm body, 0.65 mm pitch, with θJA = 143°C/W and θJC = 45°C/W for thermal-aware layout design.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel SAR ADC applications.

Compared with AD7352YRUZ, AD7356BRUZ trades internal reference convenience for higher speed, while AD7357YRUZ adds 2 bits of resolution at the cost of reference flexibility and slightly lower throughput-both require redesign of reference and power delivery networks.

Availability

AD7352YRUZ is available at Aetrix Electronics and suitable for motor control, software-defined radio, industrial motion feedback, and multi-axis encoder interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD7352YRUZ 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 facilities worldwide.

The AD7352YRUZ belongs to Analog Devices' high-speed precision SAR ADC product line, engineered specifically for deterministic, low-latency, multi-channel data acquisition in real-time control and communications systems.

FAQ

What is the maximum analog input frequency supported by the AD7352YRUZ?

The AD7352YRUZ supports a full-power bandwidth of 110 MHz at the −3 dB point and 77 MHz at the −0.1 dB point. This allows accurate digitization of fast transient signals and RF-derived baseband waveforms without significant amplitude loss, provided the input signal remains within the specified differential common-mode range and is properly driven with matched source impedances.

Does the AD7352YRUZ require an external reference, or can it operate with its internal reference?

The AD7352YRUZ can operate with its internal 2.048 V reference, specified at ±0.25% accuracy and 6 ppm/°C drift. External reference overdrive is supported (2.148 V to VDD), but is optional. Using the internal reference eliminates external components and reduces layout complexity, making AD7352YRUZ ideal for compact, cost-sensitive designs where ±0.25% reference accuracy suffices.

How does the AD7352YRUZ handle simultaneous sampling of two channels?

The AD7352YRUZ uses independent track-and-hold amplifiers for each channel, triggered synchronously by the falling edge of the CS signal. Aperture delay match is guaranteed at ≤40 ps, ensuring sub-nanosecond timing alignment between sampled values-critical for phase-coherent applications such as motor current sensing and I/Q demodulation where channel skew directly impacts system accuracy.

What are the power consumption modes of the AD7352YRUZ, and how are they controlled?

The AD7352YRUZ offers three power modes: normal (26 mW at 3 MSPS), partial power-down (9.5 mW), and full power-down (16 μW). Mode selection is controlled via the serial interface using specific command sequences defined in the "Modes of Operation" section of the datasheet-no additional control pins are required, enabling dynamic power optimization in firmware-driven systems.

Is the AD7352YRUZ pin-compatible with other devices in the AD735x family?

No, the AD7352YRUZ is not pin-compatible with AD7356 or AD7357. While all share the TSSOP-16 package, pin functions differ significantly-for example, AD7356 lacks REFA/REFB pins and uses different power supply requirements (3.3 V VDD). Migration requires PCB layout revision and firmware adaptation; AD7352YRUZ's unique pinout supports its integrated reference architecture and dual decoupling scheme.