Analog Devices Inc. AD7265BCPZ

Overview

AD7265BCPZ from Analog Devices is a dual 12-bit, 1 MSPS successive approximation ADC with three analog input channels per ADC, configurable for single-ended, pseudo-differential, or fully differential operation, and featuring an integrated 2.5 V reference ±0.2% at 25°C - used in motor control current sensing, industrial data acquisition, and real-time power quality monitoring.

For engineers reviewing the AD7265BCPZ datasheet, AD7265BCPZ pinout, AD7265BCPZ application, or AD7265BCPZ equivalent, key selection criteria include simultaneous dual-channel sampling capability, 70 dB SINAD at 50 kHz, flexible 0–VREF / 0–2×VREF input range selection, and SPI/QSPI/MICROWIRE-compatible serial interface timing at 16 MHz SCLK.

Technical Context

The AD7265BCPZ integrates two independent SAR ADCs, each preceded by a 3-channel multiplexer and a wide-bandwidth track-and-hold amplifier supporting >30 MHz input frequencies. Conversion is initiated on the falling edge of CS, with deterministic 875 ns conversion time at 16 MHz SCLK.

It supports three analog input configurations per ADC (12 single-ended, 6 fully differential, or 6 pseudo-differential channels), selectable via SGL/DIFF and RANGE pins, and provides simultaneous dual-conversion results on DOUTA and DOUTB outputs or sequentially on one line using CS reassertion.

Key Specifications

Pinout & Package

AD7265BCPZ is housed in a 32-lead LFCSP (CP-32-2) package with exposed pad, requiring connection to PCB ground plane via multiple vias for thermal and electrical performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7265BCPZ, AD7266BCPZ offers double throughput with identical footprint and software compatibility, while ADS8688IPWR trades simultaneity and speed for higher resolution and on-chip signal conditioning - making AD7265BCPZ optimal for cost-sensitive, real-time dual-signal acquisition where 12-bit fidelity and deterministic latency are primary constraints.

Availability

AD7265BCPZ is available at Aetrix Electronics and suitable for motor control, industrial data acquisition, and power quality monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD7265BCPZ 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, headquartered in Norwood, MA, with design and manufacturing expertise spanning over 50 years.

The AD7265BCPZ belongs to Analog Devices' precision SAR ADC product line, engineered specifically for industrial automation and real-time control systems demanding simultaneous sampling, low latency, and robust noise immunity.

FAQ

What is the maximum sampling rate supported by the AD7265BCPZ?

The AD7265BCPZ supports a maximum throughput rate of 1 MSPS per ADC, with simultaneous dual-channel conversion enabled by its two independent SAR cores. This rate is achieved using a 16 MHz SCLK and results in a fixed 875 ns conversion time. The device maintains full AC and DC specifications at this rate across its full operating temperature range of −40°C to +125°C, making AD7265BCPZ suitable for high-speed closed-loop control applications.

Does the AD7265BCPZ require an external reference, or does it include an internal one?

The AD7265BCPZ includes a precision 2.5 V on-chip reference with ±0.2% maximum initial error at 25°C and 20 ppm/°C maximum temperature coefficient. REF SELECT pin controls selection: tied low, it enables the internal reference with DCAPA/DCAPB used for decoupling; tied high, it allows external reference injection (100 mV to VDD) on those same pins. AD7265BCPZ thus operates fully self-contained without external references in most applications.

How many analog input channels does the AD7265BCPZ support, and how are they configured?

The AD7265BCPZ supports up to 12 analog input channels - six per ADC (VA1–VA6 and VB1–VB6). Each ADC's inputs are configurable as six single-ended, three fully differential, or three pseudo-differential pairs, selected via SGL/DIFF and RANGE pins. Channel selection is controlled by A0–A2 address lines, allowing any pair (e.g., VA3/VB3) to be sampled simultaneously. This configurability makes AD7265BCPZ adaptable across diverse sensor topologies without hardware redesign.

Can the AD7265BCPZ operate from a 3.3 V supply, and what is its power consumption at that voltage?

Yes, the AD7265BCPZ operates from a single 2.7 V to 5.25 V supply, including standard 3.3 V rails. At 3 V supplies and 1 MSPS throughput, it consumes 7 mW (2.3 mA IDD), with typical quiescent current dropping to 2.7 mA. Its low-power design supports energy-efficient operation in portable test equipment and distributed I/O modules, and partial power-down mode reduces current to 500 µA for intermittent sampling - all while maintaining full specification compliance.

What serial interface protocols is the AD7265BCPZ compatible with?

The AD7265BCPZ features a standard SPI-compatible serial interface that is explicitly compatible with SPI®, QSPI™, MICROWIRE™, and DSP host controllers. It uses CS (active-low chip select), SCLK, and two dedicated output lines (DOUTA/DOUTB) to deliver simultaneous 12-bit conversion results MSB-first on the falling edge of SCLK. No special framing or protocol extensions are required, and AD7265BCPZ has been validated with ADSP-2181, ADSP-BF531, TMS320C541, and DSP563xx processors per its datasheet application notes.