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ADC12DS105 Datasheet(PDF) 8 Page - Texas Instruments |
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ADC12DS105 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 35 page ADC12DS105 SNAS382E – SEPTEMBER 2006 – REVISED APRIL 2013 www.ti.com Dynamic Converter Electrical Characteristics Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, VA = +3.3V, VDR = +3.0V, Internal VREF = +1.2V, fCLK = 105 MHz, VCM = VCMO, CL = 5 pF/pin, . Typical values are for TA = 25°C. Boldface limits apply for TMIN ≤ TA ≤ TMAX. All other limits apply for TA = 25°C (1) (2) Units Parameter Test Conditions Typical(3) Limits (Limits)(4) DYNAMIC CONVERTER CHARACTERISTICS, AIN= -1dBFS FPBW Full Power Bandwidth -1 dBFS Input, −3 dB Corner 1.0 GHz fIN = 10 MHz 71 dBFS SNR Signal-to-Noise Ratio fIN = 70 MHz 70 dBFS fIN = 240 MHz 68.5 67.4 dBFS fIN = 10 MHz 88 dBFS SFDR Spurious Free Dynamic Range fIN = 70 MHz 85 dBFS fIN = 240 MHz 83 76.5 dBFS fIN = 10 MHz 11.5 Bits ENOB Effective Number of Bits fIN = 70 MHz 11.3 Bits fIN = 240 MHz 11 10.7 Bits fIN = 10 MHz −86 dBFS THD Total Harmonic Disortion fIN = 70 MHz −85 dBFS fIN = 240 MHz −80 -74 dBFS fIN = 10 MHz −90 dBFS H2 Second Harmonic Distortion fIN = 70 MHz −88 dBFS fIN = 240 MHz −83 -76.5 dBFS fIN = 10 MHz −88 dBFS H3 Third Harmonic Distortion fIN = 70 MHz −85 dBFS fIN = 240 MHz −83 -76.5 dBFS fIN = 10 MHz 70.8 dBFS SINAD Signal-to-Noise and Distortion Ratio fIN = 70 MHz 69.9 dBFS fIN = 240 MHz 68.2 66.5 dBFS fIN = 19.5 and 20.5 MHz, IMD Intermodulation Distortion -82 dBFS each -7dBFS (1) The inputs are protected as shown below. Input voltage magnitudes above VA or below GND will not damage this device, provided current is limited per Note 4 of the Absolute Maximum Ratings Table. However, errors in the A/D conversion can occur if the input goes above 2.6V or below GND as described in the Operating Ratings section. See Figure 2. (2) With a full scale differential input of 2VP-P , the 12-bit LSB is 488 µV. (3) Typical figures are at TA = 25°C and represent most likely parametric norms at the time of product characterization. The typical specifications are not ensured. (4) This parameter is specified in units of dBFS - indicating the value that would be attained with a full-scale input signal. 8 Submit Documentation Feedback Copyright © 2006–2013, Texas Instruments Incorporated Product Folder Links: ADC12DS105 |
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