Analog Devices Inc. AD7356BRUZ-500RL7

Overview

AD7356BRUZ-500RL7 from Analog Devices is a dual, 12-bit, successive approximation ADC with simultaneous sampling, 5 MSPS per channel throughput, differential input architecture, on-chip 2.048 V reference (±0.25% at 25°C), and operation from a single 2.5 V supply. It delivers 71.5 dB typical SNR and −100 dB ADC-to-ADC isolation for high-fidelity I/Q data acquisition in motion control and communications systems.

For engineers reviewing the AD7356BRUZ-500RL7 datasheet, AD7356BRUZ-500RL7 pinout, AD7356BRUZ-500RL7 application, or AD7356BRUZ-500RL7 equivalent, key selection criteria include simultaneous dual-channel sampling latency, differential input common-mode range (0.5 V to 1.9 V), SPI-compatible serial interface timing at 80 MHz SCLK, and TSSOP-16 thermal performance (θJA = 143°C/W).

Technical Context

The AD7356BRUZ-500RL7 integrates two independent SAR ADCs sharing a common 2.048 V reference and clocked by a single SCLK, enabling true simultaneous sampling with aperture delay match of 40 ps. Its analog front end uses matched track-and-hold amplifiers supporting >110 MHz full-power bandwidth and ±VREF/2 differential input range referenced to programmable common-mode voltage.

Conversion is initiated on the falling edge of CS with no latency; data appears on SDATAA and SDATAB as 14-bit streams (two leading zeros + 12-bit result) within t_CONVERT = t₂ + 13 × t_SCLK, where t₂ ≥ 5 ns. Power management includes three modes: normal (36 mW at 5 MSPS), partial power-down (9.5 mW), and full power-down (16 μW).

Key Specifications

Pinout & Package

AD7356BRUZ-500RL7 is housed in a 16-lead TSSOP (Thin Shrink Small Outline Package) with 0.65 mm lead pitch, JEDEC MO-153 compliant, θJA = 143°C/W, and RoHS-compliant matte tin lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7356BRUZ-500RL7, AD7357BRUZ trades 0.75 MSPS speed for 2 extra bits of resolution and higher power, while AD7266BRUZ reduces cost and complexity at the expense of speed, integrated reference, and AC performance-making AD7356BRUZ-500RL7 optimal for balanced high-speed, high-fidelity dual-channel acquisition.

Availability

AD7356BRUZ-500RL7 is available at Aetrix Electronics and suitable for motor control systems, software-defined radio receivers, industrial PLC analog input modules, and high-speed data acquisition requiring stable component supply across extended temperature ranges (−40°C to +125°C).

Supply support for AD7356BRUZ-500RL7 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 AD7356BRUZ-500RL7 belongs to Analog Devices' high-speed precision SAR ADC product line, engineered for applications demanding simultaneous multi-channel sampling, low-latency conversion, and robust noise immunity in industrial and communications infrastructure.

FAQ

What is the maximum sampling frequency supported by the AD7356BRUZ-500RL7?

The AD7356BRUZ-500RL7 supports a maximum throughput rate of 5 MSPS per channel. This is achieved with an SCLK frequency up to 80 MHz and requires t_CONVERT = t₂ + 13 × t_SCLK ≤ 200 ns. At 5 MSPS, the AD7356BRUZ-500RL7 maintains 71.5 dB typical SNR and ±1 LSB INL, making it suitable for demanding real-time acquisition tasks where both speed and precision are critical.

Does the AD7356BRUZ-500RL7 require an external reference voltage?

No, the AD7356BRUZ-500RL7 includes an on-chip 2.048 V reference with ±0.25% accuracy at 25°C and 6 ppm/°C temperature coefficient. The REFA and REFB pins can be used to buffer this reference externally or accept an overdrive signal from 2.148 V to VDD. External reference is optional and only needed when tighter initial accuracy or different voltage scaling is required.

How does the AD7356BRUZ-500RL7 handle simultaneous sampling of two analog inputs?

The AD7356BRUZ-500RL7 uses two independent track-and-hold amplifiers that sample VINA+/VINA− and VINB+/VINB− at the exact same instant upon the falling edge of CS. Aperture delay match is guaranteed ≤40 ps, ensuring phase coherence between channels. Conversion proceeds in parallel, with results appearing simultaneously on SDATAA and SDATAB as 14-bit serial streams.

What are the power consumption characteristics of the AD7356BRUZ-500RL7 in normal operation?

In normal operational mode at 5 MSPS, the AD7356BRUZ-500RL7 consumes 36 mW (14 mA at VDD = 2.5 V). Total current draw includes 14 mA from VDD and additional current from VDRIVE depending on logic level. Static power drops to 16 mW when SCLK is inactive, and partial/full power-down modes reduce consumption to 9.5 mW or 16 μW respectively-enabling dynamic power scaling in battery-aware systems.

Can the AD7356BRUZ-500RL7 interface directly with a microcontroller SPI peripheral?

Yes, the AD7356BRUZ-500RL7 features an SPI-/QSPI-/MICROWIRE-/DSP-compatible serial interface. It uses standard four-wire signaling (CS, SCLK, SDATAA, SDATAB) with MSB-first 12-bit data preceded by two leading zeros. Timing complies with common SPI modes; t₄ access time ranges from 9 ns to 12.5 ns depending on VDRIVE, and setup/hold requirements are met by most modern MCU SPI peripherals at ≤50 MHz SCLK.