GENERAL DESCRIPTION
The AD9239 is a quad, 12-bit, 250 MSPS analog-to-digital converter (ADC) with an on-chip temperature sensor and a high speed serial interface. It is designed to support digitizing high frequency, wide dynamic range signals with an input bandwidth up to 780 MHz. The output data are serialized and presented in packet format, consisting of channel-specific information, coded samples, and error correction code.

FEATURES
    4 ADCs in 1 package
    Coded serial digital outputs with ECC per channel
    On-chip temperature sensor
    −95 dB channel-to-channel crosstalk
    SNR = 65 dBFS with AIN = 85 MHz at 250 MSPS
    SFDR = 77 dBc with AIN = 85 MHz at 250 MSPS
    Excellent linearity
        DNL = ±0.3 LSB (typical)
        INL = ±0.7 LSB (typical)
    780 MHz full power analog bandwidth
    Power dissipation = 380 mW per channel at 250 MSPS
    1.25 V p-p input voltage range, adjustable up to 1.5 V p-p
    1.8 V supply operation
    Clock duty cycle stabilizer
    Serial port interface features
        Power-down modes
        Digital test pattern enable
        Programmable header
        Programmable pin functions (PGMx, PDWN)

APPLICATIONS
    Communication receivers
    Cable head end equipment/M-CMTS
    Broadband radios
    Wireless infrastructure transceivers
    Radar/military-aerospace subsystems
    Test equipment