Analog Devices Inc. AD7356YRUZ

Overview

AD7356YRUZ from Analog Devices is a dual, 12-bit, successive approximation register (SAR) ADC with simultaneous sampling, 5 MSPS per channel throughput, differential input architecture, on-chip 2.048 V reference, and SPI-compatible serial interface - designed for high-fidelity I/Q demodulation and motion control feedback loops.

For engineers reviewing the AD7356YRUZ datasheet, AD7356YRUZ pinout, AD7356YRUZ application, or AD7356YRUZ equivalent, key selection criteria include guaranteed no missing codes, ±0.5 LSB typical INL, ADC-to-ADC isolation >100 dB, aperture jitter of 16 ps, and operation across −40°C to +125°C in a 16-lead TSSOP package.

Technical Context

The AD7356YRUZ integrates two independent SAR ADCs sharing a single 2.5 V VDD supply and dual track-and-hold amplifiers capable of handling >110 MHz full-power bandwidth inputs. Each ADC uses capacitive DAC-based charge redistribution with precise CS-controlled sampling instant and zero conversion latency.

Its analog input structure supports fully differential signals referenced to common-mode voltage (0.5–1.9 V), with input capacitance of 32 pF in track mode and 8 pF in hold mode. The on-chip 2.048 V reference exhibits ±0.25% max initial error at 25°C and 6 ppm/°C temperature coefficient, and can be overdriven by external references from 2.148 V to VDD.

Key Specifications

Pinout & Package

AD7356YRUZ is housed in a 16-lead thin shrink small outline package (TSSOP) with exposed pad (YRUZ suffix denotes Y-grade, −40°C to +125°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7357BRUZ and AD7266BCPZ-REEL7, the AD7356YRUZ uniquely balances 5 MSPS throughput, 12-bit linearity, integrated reference, and −40°C to +125°C operation - making it optimal for automotive motor control and industrial motion systems where speed, accuracy, and ruggedness are jointly essential.

Availability

AD7356YRUZ is available at Aetrix Electronics and suitable for motor control systems, RF receiver front-ends, industrial PLC analog input modules, and high-reliability data acquisition requiring stable component supply across extended temperature ranges.

Supply support for AD7356YRUZ 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.

The AD7356YRUZ belongs to Analog Devices' high-speed precision SAR ADC product line, engineered specifically for demanding real-time signal acquisition in motion control, communications, and test equipment where simultaneous dual-channel sampling and low-latency digital interfacing are mandatory.

FAQ

What is the maximum sampling frequency supported by the AD7356YRUZ?

The AD7356YRUZ supports a maximum throughput rate of 5 MSPS per channel. This is achieved with an 80 MHz SCLK and requires 14 clock cycles to read out each 12-bit conversion result. The device maintains specified AC performance - including 71.5 dB SNR and ±0.5 LSB INL - at this full rate, making AD7356YRUZ suitable for high-bandwidth closed-loop control applications.

Does the AD7356YRUZ require an external reference voltage?

No, the AD7356YRUZ includes an internal 2.048 V reference with ±0.25% accuracy at 25°C and 6 ppm/°C temperature coefficient. This reference is accessible via REFA and REFB pins and can be used directly or overdriven by an external source from 2.148 V to VDD. Therefore, AD7356YRUZ operates fully autonomously without external reference components unless higher precision or different voltage is needed.

How does the AD7356YRUZ handle simultaneous sampling of two channels?

The AD7356YRUZ uses two independent track-and-hold amplifiers and SAR cores that sample on the falling edge of the CS signal, ensuring truly simultaneous acquisition. Conversion results appear concurrently on SDATAA and SDATAB pins as separate 12-bit MSB-first streams. This architecture guarantees sub-40 ps aperture delay match between channels, which is essential for accurate phase-sensitive measurements in AD7356YRUZ-based I/Q or motor current systems.

What power supply voltages are required for the AD7356YRUZ?

The AD7356YRUZ requires two supplies: VDD = 2.5 V ±10% (2.25 V to 2.75 V) for the analog core and VDRIVE = 2.25 V to 3.6 V for digital I/O levels. These rails may be independently set - for example, VDD = 2.5 V and VDRIVE = 3.3 V - allowing interoperability with mixed-voltage microcontrollers. Decoupling mandates 0.1 µF + 10 µF capacitors on both supplies, referenced to AGND and DGND respectively.

Is the AD7356YRUZ pin-compatible with other devices in the AD73xx family?

The AD7356YRUZ shares the same 16-lead TSSOP package and pin configuration with AD7352YRUZ and AD7357BRUZ, enabling drop-in replacement within the same footprint. However, functional differences exist: AD7352 offers 3 MSPS, while AD7357 provides 14-bit resolution. Thus, while AD7356YRUZ PCB layouts accommodate these variants, firmware and performance validation must account for throughput and resolution variances.