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AD7626 Datasheet(PDF) 1 Page - Analog Devices |
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AD7626 Datasheet(HTML) 1 Page - Analog Devices |
1 / 28 page 16-Bit, 10 MSPS, PulSAR Differential ADC AD7626 Rev. A 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 ©2009–2010 Analog Devices, Inc. All rights reserved. FEATURES Throughput: 10 MSPS SNR: 91.5 dB 16-bit no missing codes INL: ±0.45 LSB DNL: ±0.35 LSB Power dissipation: 136mW 32-lead LFCSP (5 mm × 5 mm) SAR architecture No latency/no pipeline delay 16-bit resolution with no missing codes Zero error: ±1LSB Differential input range: ±4.096 V Serial LVDS interface Self-clocked mode Echoed-clock mode LVDS or CMOS option for conversion control (CNV signal) Reference options Internal: 4.096 V External (1.2 V) buffered to 4.096 V External: 4.096 V APPLICATIONS Digital imaging systems Digital X-ray Digital MRI CCD and IR cameras High speed data acquisition High dynamic range telecommunications receivers Spectrum analysis Test equipment FUNCTIONAL BLOCK DIAGRAM AD7626 CLOCK LOGIC SERIAL LVDS IN– IN+ REFIN REF VCM SAR ÷2 CNV+, CNV– VIO D+, D– DCO+, DCO– CLK+, CLK– 1.2V BAND GAP CAP DAC Figure 1. GENERAL DESCRIPTION The AD7626 is a 16-bit, 10 MSPS, charge redistribution successive approximation register (SAR) based architecture analog-to-digital converter (ADC). SAR architecture allows unmatched performance both in noise (91.5 dB SNR) and in linearity (±0.45 LSB INL). The AD7626 contains a high speed, 16-bit sampling ADC, an internal conversion clock, and an internal buffered reference. On the CNV edge, it samples the voltage difference between the IN+ and IN− pins. The voltages on these pins swing in opposite phase between 0 V and REF. The 4.096 V reference voltage, REF, can be generated internally or applied externally. All converted results are available on a single LVDS self-clocked or echoed-clock serial interface, reducing external hardware connections. The AD7626 is housed in a 32-lead, 5 mm × 5 mm LFCSP with operation specified from −40°C to +85°C. Table 1. Fast PulSAR® ADC Selection Input Type Resolution (Bits) 1 MSPS to <2 MSPS 2 MSPS to 3 MSPS 6 MSPS 10 MSPS Differential (Ground Sense) 16 AD7653 AD7667 AD7980 AD7983 True Bipolar 16 AD7671 Differential (Antiphase) 16 AD7677 AD7621 AD7625 AD7626 AD7623 AD7622 Differential (Antiphase) 18 AD7643 AD7641 AD7982 AD7984 |
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