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ADC14C105 Datasheet(PDF) 8 Page - Texas Instruments |
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ADC14C105 Datasheet(HTML) 8 Page - Texas Instruments |
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8 / 33 page  ADC14C105 SNAS409C – MAY 2007 – REVISED MARCH 2013 www.ti.com Dynamic Converter Electrical Characteristics Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, VA = +3.3V, VDR = +2.5V, Internal VREF = +1.2V, fCLK = 105 MHz, 50% Duty Cycle, DCS disabled, 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 74 dBFS SNR Signal-to-Noise Ratio fIN = 70 MHz 73.5 dBFS fIN = 240 MHz 71 69.4 dBFS fIN = 10 MHz 90 dBFS SFDR Spurious Free Dynamic Range fIN = 70 MHz 86 dBFS fIN = 240 MHz 82 78 dBFS fIN = 10 MHz 11.9 Bits ENOB Effective Number of Bits fIN = 70 MHz 11.8 Bits fIN = 240 MHz 11.4 11.1 Bits fIN = 10 MHz −86 dBFS THD Total Harmonic Disortion fIN = 70 MHz −85 dBFS fIN = 240 MHz −79.3 -74 dBFS fIN = 10 MHz −95 dBFS H2 Second Harmonic Distortion fIN = 70 MHz −90 dBFS fIN = 240 MHz −86 -78 dBFS fIN = 10 MHz −90 dBFS H3 Third Harmonic Distortion fIN = 70 MHz −86 dBFS fIN = 240 MHz −82 -78 dBFS fIN = 10 MHz 73.5 dBFS SINAD Signal-to-Noise and Distortion Ratio fIN = 70 MHz 73 dBFS fIN = 240 MHz 70.4 68.8 dBFS fIN = 19.5 MHz and 20.5MHz, IMD Intermodulation Distortion -82 dBFS each -7 dBFS (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 14-bit LSB is 122.1 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) Parameters specified in dBFS indicate the value that would be attained with a full-scale input signal. Logic and Power Supply Electrical Characteristics Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, VA = +3.3V, VDR = +2.5V, Internal VREF = +1.2V, fCLK = 105 MHz, 50% Duty Cycle, DCS disabled, 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) DIGITAL INPUT CHARACTERISTICS (CLK, PD) VIN(1) Logical “1” Input Voltage VD = 3.6V 2.0 V (min) VIN(0) Logical “0” Input Voltage VD = 3.0V 0.8 V (max) (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 14-bit LSB is 122.1 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. 8 Submit Documentation Feedback Copyright © 2007–2013, Texas Instruments Incorporated Product Folder Links: ADC14C105 |
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