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AD9203WARUZ Arkusz danych(PDF) 1 Page - Analog Devices |
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AD9203WARUZ Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 8 page 10-Bit, 40 MSPS, 3 V, 74 mW Analog-to-Digital Converter Automotive Product AD9203W Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 ©2011 Analog Devices, Inc. All rights reserved. FEATURES CMOS 10-bit, 40 MSPS sampling analog-to-digital converter Power dissipation: 74 mW (3 V supply, 40 MSPS) 17 mW (3 V supply, 5 MSPS) Operation between 2.7 V and 3.6 V supply Differential nonlinearity: −0.25 LSB Power-down (standby) mode: 0.65 mW ENOB: 9.55 at fIN = 20 MHz Out-of-range indicator Adjustable on-chip voltage reference IF undersampling up to fIN = 130 MHz Input range: 1 V to 2 V p-p differential or single-ended Adjustable power consumption Internal clamp circuit Qualified for automotive applications APPLICATIONS Automotive FUNCTIONAL BLOCK DIAGRAM SHA GAIN A/D D/A SHA GAIN A/D D/A A/D CORRECTION LOGIC AD9203W OUTPUT BUFFERS 10 + – 0.5V BANDGAP REFERENCE CLK AVDD DRVDD STBY 3-STATE OTR D9 (MSB) D0 (LSB) DRVSS DFS PWRCON AVSS CLAMP CLAMPIN AINP AINN REFTF REFBF VREF REFSENSE Figure 1. GENERAL DESCRIPTION The AD9203W is a monolithic low power, single supply, 10-bit, 40 MSPS analog-to-digital converter, with an on-chip voltage reference. The AD9203W uses a multistage differential pipeline architecture and guarantees no missing codes over the full operating temperature range. Its input range may be adjusted between 1 V and 2 V p-p. The AD9203W has an onboard programmable reference. An external reference can also be chosen to suit the dc accuracy and temperature drift requirements of an application. An external resistor can be used to reduce power consumption when operating at lower sampling rates. This yields power savings for users who do not require the maximum sample rate. This feature is especially useful at sample rates far below 40 MSPS. Excellent performance is still achieved at reduced power. For example, 9.7 ENOB performance may be realized with only 17 mW of power, using a 5 MHz clock. A single clock input is used to control all internal conversion cycles. The digital output data is presented in straight binary or twos complementary output format by using the DFS pin. An out-of-range signal (OTR) indicates an overflow condition that can be used with the most significant bit to determine over- or underrange. The AD9203W can operate with a supply range from 2.7 V to 3.6 V, an attractive option for low power operation in high speed portable applications. The AD9203W is specified over industrial (−40°C to +85°C) temperature ranges and is available in a 28-lead TSSOP package. PRODUCT HIGHLIGHTS 1. Low Power. The AD9203W consumes 74 mW on a 3 V supply operating at 40 MSPS. In standby mode, power is reduced to 0.65 mW. 2. High Performance. Maintains better than 9.55 ENOB at 40 MSPS input signal from dc to Nyquist. 3. Very Small Package. The AD9203W is available in a 28-lead TSSOP. 4. Programmable Power. The AD9203W power can be further reduced by using an external resistor at lower sample rates. 5. Built-In Clamp Function. Allows dc restoration of video signals. |
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