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ADS5237 bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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ADS5237 bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 29 page www.ti.com ADS5237 SBAS420A – AUGUST 2007 – REVISED OCTOBER 2007 ELECTRICAL CHARACTERISTICS (continued) TMIN = –40°C and TMAX = +85°C. Typical values are at TA = +25°C, clock frequency = 65MSPS, 50% clock duty cycle, AVDD = 3.3V, VDRV = 3.3V, transformer-coupled inputs, –1dBFS, ISET = 56.2kΩ, and internal voltage reference, unless otherwise noted. ADS5237 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUT Differential input capacitance 3 pF Analog input common-mode range VCM ±0.05 V Differential input voltage range Internal reference 2.02 VPP External reference 2.02 × (VREF T – VREFB) VPP Voltage overload recovery time(8) 3 CLK cycles –3dBFS input, 25 Ω series Input bandwidth 300 MHz resistance DIGITAL DATA INPUTS Logic family +3V CMOS Compatible VIH High-level input voltage VIN = 3.3V 2.2 V VIL Low-level input voltage VIN = 3.3V 0.6 V CIN Input capacitance 3 pF DIGITAL OUTPUTS Data format Straight offset binary(9) Logic family CMOS Logic coding Straight offset binary or BTC Low output voltage (IOL = 50μA) +0.4 V High output voltage (IOH = 50μA) +2.4 V 3-state enable time 2 Clocks 3-state disable time 2 Clocks Output capacitance 3 pF SERIAL INTERFACE SCLK Serial clock input frequency 20 MHz CONVERSION CHARACTERISTICS Sample rate 20 65 MSPS Data latency 6 CLK cycles (8) A differential ON/OFF pulse is applied to the ADC input. The differential amplitude of the pulse in its ON (high) state is twice the full-scale range of the ADC, while the differential amplitude of the pulse in its OFF (low) state is zero. The overload recovery time of the ADC is measured as the time required by the ADC output code to settle within 1% of full-scale, as measured from its mid-code value when the pulse is switched from ON (high) to OFF (low). (9) Option for binary two’s complement output. Copyright © 2007, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): ADS5237 |
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