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ADC12L066 Datasheet(PDF) 8 Page - Texas Instruments |
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ADC12L066 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 29 page ADC12020 SNAS186B – APRIL 2003 – REVISED MARCH 2013 www.ti.com AC ELECTRICAL CHARACTERISTICS Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA = VD = +5V, VDR = +3.0V, PD = 0V, VREF = +2.0V, fCLK = 20 MHz, tr = tf = 3 ns, CL = 25 pF/pin. Boldface limits apply for TJ = TMIN to TMAX: all other limits TA = TJ = 25°C (1) (2) (3) (4) Units Symbol Parameter Conditions Typical (5) Limits (5) (Limits) fCLK1 Maximum Clock Frequency 20 30 MHz (min) fCLK2 Minimum Clock Frequency 100 kHz tCH Clock High Time 20 ns (min) tCL Clock Low Time 20 ns (min) tCONV Conversion Latency 6 Clock Cycles VDR = 2.5V 11 16.8 ns (max) tOD Data Output Delay after Rising CLK Edge VDR = 3.0V 11 16.8 ns (max) tAD Aperture Delay 1.2 ns tAJ Aperture Jitter 2 ps rms tDIS Data outputs into TRI-STATE™ Mode 4 ns tEN Data Outputs Active after TRI-STATE™ 4 ns tPD Power Down Mode Exit Cycle 0.1µF capacitors on pins 30, 31, 32 500 ns (1) 7The inputs are protected as shown below. Input voltage magnitudes above VA or below GND will not damage this device, provided current is limited per ABSOLUTE MAXIMUM RATINGS (3). However, errors in the A/D conversion can occur if the input goes above VA or below GND by more than 100 mV. As an example, if VA is 4.75V, the full-scale input voltage must be ≤4.85V to ensure accurate conversions. (2) To ensure accuracy, it is required that |VA–VD| ≤ 100 mV and separate bypass capacitors are used at each power supply pin. (3) With the test condition for VREF = +2.0V (4VP-P differential input), the 12-bit LSB is 977 µV. (4) Timing specifications are tested at TTL logic levels, VIL = 0.4V for a falling edge and VIH = 2.4V for a rising edge. (5) Typical figures are at TA = TJ = 25°C, and represent most likely parametric norms. Test limits are specific to TI's AOQL (Average Outgoing Quality Level). 8 Submit Documentation Feedback Copyright © 2003–2013, Texas Instruments Incorporated Product Folder Links: ADC12020 |
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