Analog Devices Inc. AD7266BSUZ-REEL7

Overview

AD7266BSUZ-REEL7 from Analog Devices is a dual 12-bit, 2 MSPS successive approximation ADC with pin-configurable analog inputs (12 single-ended, 6 fully differential, or 6 pseudo-differential channels), on-chip 2.5 V reference (±0.2% max @ 25°C), and SPI/QSPI/MICROWIRE/DSP-compatible serial interface. It operates from 2.7 V to 5.25 V and supports −40°C to +125°C industrial temperature range.

For engineers reviewing the AD7266BSUZ-REEL7 datasheet, AD7266BSUZ-REEL7 pinout, AD7266BSUZ-REEL7 application, or AD7266BSUZ-REEL7 equivalent, key selection criteria include simultaneous dual-channel sampling with 437.5 ns conversion time, 70 dB SNR at 50 kHz, flexible input range selection (0–VREF or 0–2×VREF), low-power shutdown mode (1 μA), and compatibility with LFCSP/TQFP PCB layouts.

Technical Context

The AD7266BSUZ-REEL7 integrates two independent 12-bit SAR ADCs, each with a 3-channel multiplexer and wide-bandwidth track-and-hold amplifier capable of >30 MHz input frequencies. Conversion is initiated on the falling edge of CS, with no pipeline delay and deterministic timing governed by SCLK frequency.

It supports straight binary or twos complement output coding, selectable via SGL/DIFF and RANGE pins. Reference configuration is controlled by REF SELECT: tied low enables internal 2.5 V reference; tied high allows external reference (100 mV to VDD) applied to DCAPA/DCAPB pins.

Key Specifications

Pinout & Package

AD7266BSUZ-REEL7 is packaged in a 32-lead TQFP (SU-32-2) with exposed pad. Pin assignments are validated per Analog Devices Rev. C datasheet Figure 3 and Table 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7265BRUZ, AD7266BSUZ-REEL7 delivers 2× throughput with identical footprint and software compatibility; versus ADS8327IPWR, it trades resolution for true simultaneous dual-channel acquisition and integrated reference-enabling simpler, faster, and more compact signal chain designs.

Availability

AD7266BSUZ-REEL7 is available at Aetrix Electronics and suitable for motor control feedback, power quality monitoring, and industrial sensor fusion requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for AD7266BSUZ-REEL7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.

The AD7266BSUZ-REEL7 belongs to Analog Devices' high-speed precision SAR ADC product line, designed specifically for applications demanding simultaneous multi-channel acquisition, low latency, and robust operation across extended temperature ranges.

FAQ

What is the maximum sampling rate supported by the AD7266BSUZ-REEL7?

The AD7266BSUZ-REEL7 supports a maximum throughput rate of 2 MSPS when operated with a 32 MHz SCLK and 5 V supplies. At this rate, conversion time is fixed at 437.5 ns (14 SCLK cycles), and power dissipation is 27 mW. The device also supports 1.5 MSPS operation at 3 V supplies with reduced power consumption (9 mW).

Does the AD7266BSUZ-REEL7 require an external reference voltage?

No, the AD7266BSUZ-REEL7 includes an accurate on-chip 2.5 V reference (±0.2% max @ 25°C, 20 ppm/°C drift). When REF SELECT is tied low, the internal reference is used for both ADCs. An external reference (100 mV to VDD) may be applied to DCAPA/DCAPB pins if higher precision or different voltage is needed.

Can the AD7266BSUZ-REEL7 perform simultaneous sampling on both ADCs?

Yes, the AD7266BSUZ-REEL7 is explicitly designed for simultaneous sampling: both ADCs acquire their respective input channels on the same falling edge of CS, with aperture delay matching ≤200 ps. This enables phase-coherent measurements critical for vector control and power analysis.

What package type is used for the AD7266BSUZ-REEL7?

The AD7266BSUZ-REEL7 uses a 32-lead TQFP package (SU-32-2 footprint), as confirmed in the Analog Devices Rev. C datasheet Figure 3. It is distinct from the LFCSP variant (AD7266BCPZ); the TQFP version offers ease of inspection and rework in standard SMT assembly processes.

How does the AD7266BSUZ-REEL7 handle analog input configuration?

The AD7266BSUZ-REEL7 uses two logic inputs-SGL/DIFF and RANGE-to configure its 12 analog inputs. SGL/DIFF selects single-ended (high) or differential (low) mode; RANGE selects 0–VREF (low) or 0–2×VREF (high) input range. Combined with A2–A0 multiplexer address lines, this enables dynamic runtime reconfiguration of all 12 channels.