Analog Devices Inc. AD9239-250KITZ

Overview

AD9239-250KITZ from Analog Devices is a quad-channel, 12-bit, 250 MSPS analog-to-digital converter evaluation kit designed for high-speed digitization of wideband RF and IF signals up to 780 MHz full-power bandwidth. It integrates four synchronized ADCs with on-chip temperature sensing, coded serial CML outputs (4.0 Gbps/channel), ECC per channel, and 1.8 V single-supply operation - enabling compact, low-power receiver front-ends in cable head-end and radar subsystems.

For engineers reviewing the AD9239-250KITZ datasheet, AD9239-250KITZ pinout, AD9239-250KITZ application, or AD9239-250KITZ equivalent, this kit provides validated hardware reference design, SPI-configurable serial interface timing, deterministic jitter control (10 ps max), and real-world performance validation at 250 MSPS - critical for evaluating SNR (64.1 dBFS), SFDR (77 dBc), and channel-to-channel crosstalk (−95 dB) in broadband transceiver signal chains.

Technical Context

The AD9239-250KITZ implements a pipelined switched-capacitor ADC architecture with 40-clock-cycle pipeline latency and integrated clock duty cycle stabilizer (DCS), enabling stable ac performance across wide input clock duty cycles. Each of its four 12-bit channels delivers serialized CML output packets containing 12-bit data + 8-bit ECC, formatted over 16-bit UI periods at 4.0 Gbps per channel.

It supports differential analog inputs (1.0–1.5 V p-p, 1.4 V common-mode), LVPECL/LVDS/CMOS clock inputs, and programmable digital features including power-down modes, digital test patterns, and configurable PGMx pins - all managed via a 4-wire SPI interface with SDO/SDI/SCLK/CSB signals routed to accessible headers on the board.

Key Specifications

Availability

AD9239-250KITZ is available at Aetrix Electronics and suitable for communication receiver development, broadband radio prototyping, and radar subsystem validation requiring stable component supply, full documentation access, and pre-characterized PCB layout compliance with high-speed CML routing rules.

Supply support for AD9239-250KITZ 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, serving precision instrumentation, communications, and industrial markets since 1965.

The AD9239 product line delivers quad-channel, high-speed ADCs optimized for space-constrained, wideband digitization applications - specifically targeting cable infrastructure, wireless base stations, electronic warfare, and automated test equipment where channel density and serial interface efficiency are critical.

FAQ

What is the AD9239-250KITZ used for?

The AD9239-250KITZ is an evaluation kit for the AD9239BCPZ-250 quad 12-bit 250 MSPS ADC. It provides a fully assembled, tested PCB with reference clock distribution, analog input conditioning, CML output termination, and SPI interface headers - enabling rapid validation of SNR, SFDR, and channel synchronization in real-world receiver architectures. Engineers use AD9239-250KITZ to verify system-level timing, jitter tolerance, and firmware integration before committing to custom board design.

Does the AD9239-250KITZ include the AD9239BCPZ-250 IC?

Yes, the AD9239-250KITZ contains one AD9239BCPZ-250 IC - a 72-lead LFCSP packaged quad ADC operating at 250 MSPS with on-chip temperature sensor, coded serial CML outputs, and 1.8 V supply. The kit mounts this exact device alongside matched impedance traces, calibrated analog input networks, and FPGA-compatible CML output connectors - ensuring measurement fidelity matches the datasheet conditions for AD9239BCPZ-250.

What clock sources are compatible with the AD9239-250KITZ?

The AD9239-250KITZ accepts differential clock inputs via transformer-coupled LVPECL, LVDS, or CMOS signals at 250 MHz, as specified for AD9239BCPZ-250. Its onboard clock circuitry includes AC coupling, internal 1.2 V common-mode bias, and duty cycle stabilization - allowing robust operation with clock duty cycles from 30% to 70%. The kit's reference design supports low-jitter sources such as AD9516 or HMC7044, and includes test points for probing CLK+/CLK− integrity.

Can the AD9239-250KITZ be used for multi-board synchronization?

Yes, the AD9239-250KITZ supports deterministic multi-board synchronization through its RESET pin and programmable header configuration. When multiple AD9239-250KITZ boards share a common clock and synchronized RESET assertion, channel-to-channel packet skew is limited to ±1 clock cycle (4 ns at 250 MSPS), as confirmed in AD9239BCPZ-250 specifications. This enables phase-coherent sampling across distributed antenna arrays or modular test systems.

Is software provided with the AD9239-250KITZ?

Analog Devices provides the VisualAnalog® evaluation software and SPI controller firmware for AD9239-250KITZ, enabling register configuration, real-time FFT analysis, histogram plotting, and SNR/SFDR measurement directly from PC via USB-to-SPI adapter. These tools are validated against AD9239BCPZ-250 electrical behavior and include memory map scripts for Register 9 (DCS enable), Register 18 (input span), and packet header programming - all documented in the AD9239 datasheet Rev. F.