Analog Devices Inc. AD9286BCPZRL7-500

Overview

AD9286BCPZRL7-500 from Analog Devices is an 8-bit, dual-channel, time-interleaved analog-to-digital converter (ADC) operating at 500 MSPS with single 1.8 V supply, 49.3 dBFS SNR at 200 MHz input, and LVDS digital outputs. It integrates on-chip clock management, reference, and track-and-hold for high-speed digitization in portable test equipment and video-over-fiber systems.

For engineers reviewing the AD9286BCPZRL7-500 datasheet, AD9286BCPZRL7-500 pinout, AD9286BCPZRL7-500 application, or AD9286BCPZRL7-500 equivalent, key selection considerations include interleaved timing control, 1.2 V_p-p differential analog input range, −40°C to +85°C industrial temperature rating, and 48-lead LFCSP package compatibility with high-density PCB layouts.

Technical Context

The AD9286BCPZRL7-500 employs a two-channel pipeline ADC architecture with on-chip clock division and interleaving logic to achieve 500 MSPS effective sampling rate from a single 500 MHz input clock. Each channel operates at 250 MSPS with independent timing adjustment via SPI to minimize image spurs.

It features differential analog inputs with 500 MHz bandwidth, integrated 1.0 V internal reference, and LVDS-compliant outputs with 290–400 mV differential swing. The device supports offset binary, Gray code, or twos complement output formats and includes built-in digital test pattern generation.

Key Specifications

Pinout & Package

AD9286BCPZRL7-500 is housed in a Pb-free, 48-lead LFCSP (CP-48-14) package with exposed thermal pad requiring soldering to PCB analog ground for thermal, noise, and mechanical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9286BCPZ-500, the AD9286BCPZRL7-500 offers identical electrical performance in tape-and-reel format optimized for volume manufacturing, while AD9289BCPZ-500 trades higher resolution and SNR for increased power and cost-making it appropriate only when 8-bit quantization proves insufficient for target signal fidelity.

Availability

AD9286BCPZRL7-500 is available at Aetrix Electronics and suitable for handheld oscilloscopes, video-over-fiber transmitters, and battery-powered signal analyzers requiring stable component supply across long production lifecycles.

Supply support for AD9286BCPZRL7-500 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 R&D and manufacturing operations worldwide.

The AD9286 belongs to Analog Devices' high-speed ADC product line, designed specifically for cost-sensitive, power-constrained instrumentation and communications applications requiring 500 MSPS sampling with integrated clocking and reference functions.

FAQ

What is the maximum analog input frequency supported by the AD9286BCPZRL7-500?

The AD9286BCPZRL7-500 has a full-power bandwidth of 700 MHz, meaning it can accurately digitize analog signals up to that frequency without significant amplitude roll-off. Its usable Nyquist zone extends to 250 MHz for real-sampled baseband applications, but it supports undersampling of higher IF signals within the 700 MHz bandwidth limit. Performance metrics like SNR and SFDR are validated up to 220 MHz in the datasheet.

Does the AD9286BCPZRL7-500 require external reference components?

No, the AD9286BCPZRL7-500 includes an on-chip 1.0 V internal voltage reference and track-and-hold circuitry, eliminating the need for external reference ICs or passive components in most applications. An external reference can be applied via the VREF pin if tighter accuracy or temperature stability is required, but the internal reference delivers guaranteed 49.3 dBFS SNR and 1.2 V_p-p input span out-of-the-box.

How is timing skew managed between the two interleaved ADC cores in the AD9286BCPZRL7-500?

The AD9286BCPZRL7-500 provides SPI-accessible coarse and fine timing adjustment registers to align sampling edges between its two 250 MSPS cores. This calibration minimizes image spurs caused by gain, offset, or timing mismatches. The DCO± output reflects the aligned timing, with skew specified at −280 ps to +100 ps, and the device achieves <−60 dBc image rejection after adjustment.

What is the purpose of the RBIAS pin on the AD9286BCPZRL7-500?

The RBIAS pin on the AD9286BCPZRL7-500 connects to an external 10 kΩ ±1% resistor tied to AGND, setting the master current reference for the ADC core's internal bias network. This resistor directly influences conversion linearity and noise performance; deviation beyond 1% tolerance risks violating the specified ±0.2 LSB DNL and 49.3 dBFS SNR guarantees.

Can the AD9286BCPZRL7-500 operate with a single-ended clock input?

The AD9286BCPZRL7-500 is optimized for differential clock inputs (LVDS/LVPECL/sine) on CLK+/CLK−, but it can accept single-ended clocks with degraded jitter performance. For reliable 500 MSPS operation, Analog Devices recommends ac-coupling a single-ended source into one clock pin while terminating the complementary pin to AVDD/2 via a resistor divider-though this configuration increases aperture jitter and may reduce SFDR by 3–5 dBc compared to true differential drive.