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AD9239BCPZ-210 Datasheet(PDF) 1 Page - Analog Devices |
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AD9239BCPZ-210 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 41 page  Quad, 12-Bit, 170 MSPS/210 MSPS/250 MSPS Serial Output 1.8 V ADC Data Sheet AD9239 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 FUNCTIONAL BLOCK DIAGRAM AD9239 12 CHANNEL D CHANNEL A CHANNEL B CHANNEL C VIN + A DOUT + A DOUT – A AVDD PDWN DRVDD DRGND 12 VIN + B VIN – B DOUT + B DOUT – B 12 VIN + C DOUT + C DOUT – C 12 VIN – A VCM A VCM B VIN – C VCM C SCLK SDI/ SDIO SDO CSB VIN + D VIN – D VCM D TEMPOUT DOUT + D DOUT – D PGM3 PGM2 PGM1 PGM0 RESET SHA SHA SHA SHA BUF BUF BUF BUF PIPELINE ADC PIPELINE ADC PIPELINE ADC PIPELINE ADC SERIAL PORT CLK+ CLK– DATA RATE MULTIPLIER RBIAS REFERENCE Figure 1. 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. The ADC requires a single 1.8 V power supply and the input clock may be driven differentially with a sine wave, LVPECL, TTL, or LVDS. A clock duty cycle stabilizer allows high performance at full speed with a wide range of clock duty cycles. The on-chip reference eliminates the need for external decoupling and can be adjusted by means of SPI control. Various power-down and standby modes are supported. The ADC typically consumes 145 mW per channel with the digital link still in operation when standby operation is enabled. Fabricated on an advanced CMOS process, the AD9239 is avail- able in a Pb-free/RoHS-compliant, 72-lead LFCSP package. It is specified over the industrial temperature range of −40°C to +85°C. PRODUCT HIGHLIGHTS 1. Four ADCs are contained in a small, space-saving package. 2. An on-chip PLL allows users to provide a single ADC sampling clock, and the PLL distributes and multiplies up to produce the corresponding data rate clock. 3. Coded data rate supports up to 4.0 Gbps per channel. Coding includes scrambling to ensure proper dc common mode, embedded clock, and error correction. 4. The AD9239 operates from a single 1.8 V power supply. 5. Flexible synchronization schemes and programmable mode pins. 6. On-chip temperature sensor. Rev. E Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2008–2014 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com |
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