Analog Devices Inc. AD9266-20EBZ

Overview

AD9266-20EBZ from Analog Devices is a 16-bit, 20 MSPS analog-to-digital converter with 1.8 V analog supply, 700 MHz analog input bandwidth, and on-chip voltage reference-designed for high-fidelity signal acquisition in portable ultrasound and handheld test equipment.

For engineers reviewing the AD9266-20EBZ datasheet, AD9266-20EBZ pinout, AD9266-20EBZ application, or AD9266-20EBZ equivalent, key selection criteria include SNR (77.9 dBFS at 9.7 MHz), SFDR (95.6 dBc), DNL (−0.5/+0.6 LSB), differential clock interface support (CMOS/LVDS/LVPECL), and LFCSP-32 package compatibility with AD96xx series ADCs.

Technical Context

The AD9266-20EBZ implements a multistage differential pipeline architecture with output error correction logic to guarantee 16-bit accuracy and no missing codes over −40°C to +85°C. It uses a 2 V p-p differential analog input with 0.9 V common-mode voltage and supports programmable clock/data alignment via SPI.

Its serial port interface enables configuration of data format (offset binary/Gray/twos complement), integer 1-to-8 clock division, duty cycle stabilization, and built-in deterministic/pseudorandom test pattern generation-without requiring external logic or timing controllers.

Key Specifications

Pinout & Package

The AD9266-20EBZ is housed in a 32-lead, 5 mm × 5 mm RoHS-compliant LFCSP 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-resolution, low-power ADC applications.

Compared with AD9265-20EBZ and ADS58C20IRGZT, the AD9266-20EBZ uniquely combines on-chip reference, duty cycle stabilization, and pin compatibility with AD96xx family-making it optimal for drop-in upgrades and space-constrained medical/industrial instrumentation where analog subsystem integration is critical.

Availability

AD9266-20EBZ is available at Aetrix Electronics and suitable for portable medical imaging, handheld test equipment, and smart antenna systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AD9266-20EBZ 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, with design centers worldwide.

The AD9266 belongs to Analog Devices' precision high-speed ADC product line, engineered for applications demanding wide bandwidth, low power, and guaranteed DC/AC performance in portable and thermally constrained environments.

FAQ

What is the maximum analog input frequency supported by the AD9266-20EBZ?

The AD9266-20EBZ features a 700 MHz analog input bandwidth, enabling faithful digitization of signals up to its full-scale 2 V p-p differential input range. While its 20 MSPS sample rate sets Nyquist at 10 MHz, the wide bandwidth preserves transient fidelity and eases anti-aliasing filter design for IF-sampling architectures up to 200 MHz input-where SNR remains 72.1 dBFS per datasheet Table 2.

Does the AD9266-20EBZ require an external voltage reference?

No, the AD9266-20EBZ integrates a precision 1.0 V voltage reference with ±12 mV tolerance and 2 mV load regulation. It can operate in internal reference mode (VREF tied to SENSE) or accept an external 1.0 V source. This eliminates the need for external reference ICs in most implementations, reducing BOM count and PCB area for the AD9266-20EBZ.

How does the interleaved digital output of the AD9266-20EBZ reduce system complexity?

The AD9266-20EBZ presents its 16-bit output as eight 2-bit nibbles (D1_D0 through D15_D14) on shared pins, halving the required I/O count versus conventional parallel output. This directly reduces FPGA pin utilization, routing density, and signal integrity challenges-especially valuable in compact handheld designs where the AD9266-20EBZ is commonly deployed.

Can the AD9266-20EBZ be used with a 3.3 V digital interface?

Yes, the AD9266-20EBZ supports 1.8 V to 3.3 V digital output levels via its DRVDD supply. When DRVDD = 3.3 V, output high-level voltage is ≥3.25 V at 0.5 mA sink, ensuring robust CMOS logic compatibility. This flexibility allows seamless interfacing with legacy 3.3 V FPGAs or microcontrollers without level-shifting circuitry for the AD9266-20EBZ.

What is the purpose of the exposed paddle (EPAD) on the AD9266-20EBZ package?

The EPAD on the AD9266-20EBZ is the sole ground connection for the die and must be soldered to the PCB's analog ground plane. Per datasheet Figure 3 and Table 8, this ensures proper thermal dissipation (θJA = 37.1°C/W), mechanical reliability, noise immunity, and functional stability-failure to connect EPAD results in degraded performance or non-operation of the AD9266-20EBZ.