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ADC12DC080 Datasheet(PDF) 7 Page - Texas Instruments |
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ADC12DC080 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 27 page  VA AGND To Internal Circuitry I/O ADC12DC080 www.ti.com SNAS405B – SEPTEMBER 2007 – REVISED NOVEMBER 2008 Dynamic Converter Electrical Characteristics Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, VA = +3.0V, VDR = +2.5V, Internal VREF = +1.2V, fCLK = 80 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 Typical Symbol Parameter Conditions Limits (Limits) (3) (4) DYNAMIC CONVERTER CHARACTERISTICS, AIN= -1dBFS FPBW Full Power Bandwidth -1 dBFS Input, −3 dB Corner 1.0 GHz fIN = 10 MHz 71.5 dBFS SNR Signal-to-Noise Ratio fIN = 70 MHz 70.5 dBFS fIN = 170 MHz 69.5 68.6 dBFS fIN = 10 MHz 90 dBFS SFDR Spurious Free Dynamic Range fIN = 70 MHz 86 dBFS fIN = 170 MHz 83 78 dBFS fIN = 10 MHz 11.6 Bits ENOB Effective Number of Bits fIN = 70 MHz 11.4 Bits fIN = 170 MHz 11.2 11 Bits fIN = 10 MHz −86 dBFS THD Total Harmonic Disortion fIN = 70 MHz −85 dBFS fIN = 170 MHz −84 -77 dBFS fIN = 10 MHz −95 dBFS H2 Second Harmonic Distortion fIN = 70 MHz −90 dBFS fIN = 170 MHz −83 -78 dBFS fIN = 10 MHz −88 dBFS H3 Third Harmonic Distortion fIN = 70 MHz −85 dBFS fIN = 170 MHz −83 -78 dBFS fIN = 10 MHz 71.3 dBFS SINAD Signal-to-Noise and Distortion Ratio fIN = 70 MHz 70.3 dBFS fIN = 170 MHz 69.3 68 dBFS IMD Intermodulation Distortion fIN = 20 MHz and 21 MHz, each -7dBFS -84 dBFS 0 MHz tested channel, fIN = 10 MHz at - Crosstalk -100 dBFS 1dBFS other channel (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 under Absolute Maximum Ratings. 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. (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. Copyright © 2007–2008, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: ADC12DC080 |
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