Analog Devices Inc. AD9266BCPZ-20

Overview

AD9266BCPZ-20 from Analog Devices is a 16-bit, 20 MSPS analog-to-digital converter operating from a single 1.8 V analog supply with 2 V_p-p differential input range, 77.9 dBFS SNR at 9.7 MHz, and on-chip sample-and-hold circuit. It targets low-power, high-accuracy digitization in portable medical ultrasound and battery-powered instrumentation.

For engineers reviewing the AD9266BCPZ-20 datasheet, AD9266BCPZ-20 pinout, AD9266BCPZ-20 application, or AD9266BCPZ-20 equivalent, key selection criteria include its 20 MSPS sampling rate, 700 MHz analog input bandwidth, LFCSP-32 RoHS-compliant package, and support for offset binary/Gray/twos complement output formats with programmable clock/data alignment.

Technical Context

The AD9266BCPZ-20 employs a multistage differential pipeline architecture with output error correction logic to guarantee 16-bit accuracy and no missing codes across −40°C to +85°C. Its differential clock input supports CMOS/LVDS/LVPECL signaling and includes an optional duty cycle stabilizer (DCS) and integer 1-to-8 clock divider.

Digital outputs are interleaved and configurable via SPI for format (offset binary, Gray, twos complement), timing alignment, and test pattern generation. The device integrates an on-chip 1.0 V voltage reference, internal common-mode bias (VCM = 0.9 V), and programmable power-down modes consuming only 0.5 mW in shutdown.

Key Specifications

Pinout & Package

The AD9266BCPZ-20 is housed in a 32-lead, 5 mm × 5 mm RoHS-compliant LFCSP package with exposed paddle (EPAD) that must be soldered to AGND for thermal, mechanical, and noise integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-resolution, low-power ADC applications.

Compared with AD9265BCPZ-20 and ADS8860IDRCT, the AD9266BCPZ-20 uniquely combines 1.8 V single-supply operation, integrated reference, 700 MHz bandwidth, and 20 MSPS pipeline throughput-making it irreplaceable for portable, wideband, low-power digitization where supply headroom and board area are constrained.

Availability

AD9266BCPZ-20 is available at Aetrix Electronics and suitable for ultrasound beamforming, handheld spectrum analysis, smart antenna receivers, and portable PET detector modules requiring stable component supply and long-term industrial temperature support.

Supply support for AD9266BCPZ-20 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 pipeline ADCs optimized for portable medical imaging, battery-operated instrumentation, and communications infrastructure where thermal efficiency and signal fidelity are critical.

FAQ

What is the maximum analog input frequency supported by the AD9266BCPZ-20?

The AD9266BCPZ-20 features a 700 MHz analog input bandwidth, enabling digitization of signals up to the third Nyquist zone. At 20 MSPS, its first Nyquist zone spans DC to 10 MHz, but the wide bandwidth supports undersampling of higher-frequency IF signals-verified up to 200 MHz with 72.1 dBFS SNR in datasheet Figure 8. This makes AD9266BCPZ-20 suitable for direct RF sampling in compact receivers.

Does the AD9266BCPZ-20 require an external voltage reference?

No, the AD9266BCPZ-20 includes an on-chip 1.0 V voltage reference with ±12 mV initial accuracy and ≤2 mV load regulation error at 1 mA. It can operate in internal reference mode (SENSE tied to AVDD) or accept an external reference via VREF pin. The internal reference eliminates BOM cost and layout complexity, and is fully characterized across temperature for AD9266BCPZ-20's −40°C to +85°C range.

How does the interleaved digital output interface of the AD9266BCPZ-20 reduce system complexity?

The AD9266BCPZ-20 outputs 16-bit data across eight differential pairs (D1_D0 through D15_D14), halving the number of data lines versus a conventional parallel bus. This reduces FPGA pin count, PCB layer count, and routing congestion-critical in handheld medical and test equipment. Combined with the programmable DCO, it simplifies timing closure without requiring source-synchronous DDR interfaces.

Can the AD9266BCPZ-20 operate with a 3.3 V digital output supply?

Yes, the AD9266BCPZ-20 supports DRVDD from 1.8 V to 3.3 V, allowing compatibility with both low-voltage FPGAs and legacy 3.3 V logic families. When DRVDD = 3.3 V, output high-level voltage is ≥3.25 V at 0.5 mA sink, and low-level voltage is ≤0.2 V at 1.6 mA source-meeting standard CMOS thresholds. Power consumption increases to 93 mW (sine input), but signal integrity improves for longer traces.

What is the purpose of the RBIAS pin on the AD9266BCPZ-20?

The RBIAS pin on the AD9266BCPZ-20 sets the internal analog bias current by connecting a 10 kΩ (1% tolerance) resistor to ground. This resistor calibrates the ADC core's transconductance stages, directly affecting DNL, INL, and SFDR performance. Deviation beyond ±1% tolerance degrades SFDR by >3 dBc per 5% error-so precise resistor selection is mandatory for AD9266BCPZ-20 to meet datasheet AC specifications.