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AD9233 датащи(PDF) 1 Page - Analog Devices |
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AD9233 датащи(HTML) 1 Page - Analog Devices |
1 / 44 page 12-Bit, 80 MSPS/105 MSPS/125 MSPS, 1.8 V Analog-to-Digital Converter AD9233 Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other 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 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. FEATURES 1.8 V analog supply operation 1.8 V to 3.3 V output supply SNR = 69.5 dBc (70.5 dBFS) to 70 MHz input SFDR = 85 dBc to 70 MHz input Low power: 395 mW @ 125 MSPS Differential input with 650 MHz bandwidth On-chip voltage reference and sample-and-hold amplifier DNL = ±0.15 LSB Flexible analog input: 1 V p-p to 2 V p-p range Offset binary, Gray code, or twos complement data format Clock duty cycle stabilizer Data output clock Serial port control Built-in selectable digital test pattern generation Programmable clock and data alignment APPLICATIONS Ultrasound equipment IF sampling in communications receivers IS-95, CDMA-One, IMT-2000 Battery-powered instruments Hand-held scopemeters Low cost digital oscilloscopes GENERAL DESCRIPTION The AD9233 is a monolithic, single 1.8 V supply, 12-bit, 80 MSPS/ 105 MSPS/125 MSPS analog-to-digital converter (ADC), featuring a high performance sample-and-hold amplifier (SHA) and on- chip voltage reference. The product uses a multistage differential pipeline architecture with output error correction logic to provide 12-bit accuracy at 125 MSPS data rates and guarantees no missing codes over the full operating temperature range. The wide bandwidth, truly differential SHA allows a variety of user-selectable input ranges and offsets, including single-ended applications. It is suitable for multiplexed systems that switch full-scale voltage levels in successive channels and for sampling single-channel inputs at frequencies well beyond the Nyquist rate. Combined with power and cost savings over previously available ADCs, the AD9233 is suitable for applications in communications, imaging, and medical ultrasound. A differential clock input controls all internal conversion cycles. A duty cycle stabilizer (DCS) compensates for wide variations in the clock duty cycle while maintaining excellent overall ADC performance. FUNCTIONAL BLOCK DIAGRAM DRVDD AVDD AGND 0.5V CLK– PDWN DRGND OR VIN+ VIN– REFT REFB AD9233 VREF SENSE SHA A/D MDAC1 4 8 13 3 A/D 8-STAGE 1 1/2-BIT PIPELINE REF SELECT CLK+ CLOCK DUTY CYCLE STABILIZER MODE SELECT CORRECTION LOGIC OUTPUT BUFFERS DCO SCLK/DFS SDIO/DCS CSB D11 (MSB) D0 (LSB) Figure 1. The digital output data is presented in offset binary, Gray code, or twos complement formats. A data output clock (DCO) is provided to ensure proper latch timing with receiving logic. The AD9233 is available in a 48-lead LFCSP and is specified over the industrial temperature range (−40°C to +85°C). PRODUCT HIGHLIGHTS 1. The AD9233 operates from a single 1.8 V power supply and features a separate digital output driver supply to accommodate 1.8 V to 3.3 V logic families. 2. The patented SHA input maintains excellent performance for input frequencies up to 225 MHz. 3. The clock DCS maintains overall ADC performance over a wide range of clock pulse widths. 4. A standard serial port interface supports various product features and functions, such as data formatting (offset binary, twos complement, or Gray coding), enabling the clock DCS, power-down, and voltage reference mode. 5. The AD9233 is pin compatible with the AD9246, allowing a simple migration from 12 bits to 14 bits. |
Аналогичный номер детали - AD9233 |
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Аналогичное описание - AD9233 |
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