Analog Devices Inc. AD9266-80EBZ

Overview

AD9266-80EBZ from Analog Devices is a 16-bit, 80 MSPS analog-to-digital converter (ADC) with 1.8 V analog supply, differential 700 MHz input bandwidth, and on-chip voltage reference. It delivers 77.6 dBFS SNR at 9.7 MHz and 71.1 dBFS at 200 MHz input, supporting high-fidelity digitization in ultrasound and radar front-ends.

For engineers reviewing the AD9266-80EBZ datasheet, AD9266-80EBZ pinout, AD9266-80EBZ application, or AD9266-80EBZ equivalent, key selection criteria include its 80 MSPS sampling rate, 1.8 V single-supply operation, interleaved CMOS output interface, and industrial temperature range (−40°C to +85°C).

Technical Context

The AD9266-80EBZ implements a multistage differential pipeline architecture with output error correction logic to guarantee 16-bit accuracy and no missing codes across temperature. Its sample-and-hold circuit supports full-scale performance up to 200 MHz input frequency.

Digital control is enabled via a standard SPI interface supporting clock/data alignment, programmable test pattern generation, and integer 1-to-8 clock division. The DCO output provides programmable timing for latch synchronization with receiving logic.

Key Specifications

Pinout & Package

The AD9266-80EBZ is housed in a 32-lead RoHS-compliant 5 mm × 5 mm LFCSP package with exposed paddle (EPAD) that must be soldered to AGND for thermal, mechanical, and noise performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed ADC applications.

Compared with AD9266-80EBZ, AD9649BCPZ-80 trades 2 bits of resolution for lower power and cost in fixed-rate systems, while AD9653BCPZ-125 extends bandwidth at the expense of power, supply voltage, and package compatibility.

Availability

AD9266-80EBZ is available at Aetrix Electronics and suitable for ultrasound imaging, radar front-ends, and portable medical instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD9266-80EBZ 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 AD9266 product line delivers high-resolution, low-power ADCs for demanding RF and instrumentation applications, emphasizing wide input bandwidth, on-chip reference stability, and flexible digital interface options.

FAQ

What is the maximum input frequency supported by the AD9266-80EBZ?

The AD9266-80EBZ supports analog input frequencies up to 200 MHz while maintaining specified SNR and SFDR performance. Its 700 MHz analog input bandwidth ensures minimal amplitude roll-off and phase distortion across this range, making it suitable for undersampling and direct RF digitization in communications and radar systems. The AD9266-80EBZ achieves 71.1 dBFS SNR at 200 MHz input under standard test conditions.

Does the AD9266-80EBZ require external voltage reference components?

No, the AD9266-80EBZ integrates an on-chip 1.0 V voltage reference with ±12 mV tolerance over temperature, eliminating the need for external reference ICs in most applications. The VREF pin can operate in output mode (internal reference) or input mode (external reference), and SENSE selects between internal/external reference configurations. This integration reduces BOM count and improves system-level accuracy and thermal stability for the AD9266-80EBZ.

How does the interleaved digital output interface of the AD9266-80EBZ reduce pin count?

The AD9266-80EBZ uses interleaved CMOS outputs where adjacent data bits (e.g., D1_D0, D3_D2) are grouped per pin pair, reducing the number of required data lines from 16 single-ended to eight differential pairs. This halves the I/O count versus conventional parallel interfaces, easing PCB routing density and signal integrity challenges. The AD9266-80EBZ maintains full 16-bit resolution while minimizing package size and interconnect complexity.

Can the AD9266-80EBZ operate with a 3.3 V digital supply?

Yes, the AD9266-80EBZ supports DRVDD from 1.8 V to 3.3 V, allowing direct interfacing with 3.3 V FPGA or ASIC logic without level shifters. At 3.3 V DRVDD, output high-level voltage is ≥3.25 V (IOH = 0.5 mA), ensuring robust noise margins. The analog core remains powered by 1.8 V AVDD, preserving low-noise performance independent of digital supply voltage - a key design feature of the AD9266-80EBZ.

What is the purpose of the duty cycle stabilizer (DCS) in the AD9266-80EBZ?

The optional duty cycle stabilizer (DCS) in the AD9266-80EBZ corrects wide variations in input clock duty cycle (e.g., from PLLs or crystal oscillators), maintaining aperture jitter below 0.1 ps rms and preserving SNR/SFDR performance. When enabled, DCS allows reliable operation with clocks exhibiting 30–70% duty cycle - critical for systems where clock conditioning circuitry is constrained by space or power. This function is configurable via the AD9266-80EBZ's SPI interface.