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ADC12DC105 Datasheet(PDF) 7 Page - Texas Instruments |
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ADC12DC105 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 26 page  VA AGND To Internal Circuitry I/O ADC12DC105 www.ti.com SNAS469B – SEPTEMBER 2008 – REVISED MARCH 2013 Dynamic Converter Electrical Characteristics (continued) Unless otherwise specified, the following specifications apply: AGND = DRGND = 0V, VA = +3.3V, VDR = +2.5V, 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) fIN = 10 MHz −86 dBFS fIN = 70 MHz −85 dBFS THD Total Harmonic Disortion fIN = 170 MHz −84 -76.5 dBFS fIN = 240 MHz -80 dBFS fIN = 10 MHz −95 dBFS fIN = 70 MHz −90 dBFS H2 Second Harmonic Distortion fIN = 170 MHz −83 -78 dBFS fIN = 240 MHz -84 dBFS fIN = 10 MHz −90 dBFS fIN = 70 MHz −86 dBFS H3 Third Harmonic Distortion fIN = 170 MHz −83 -78 dBFS fIN = 240 MHz -81 dBFS fIN = 10 MHz 70.9 dBFS fIN = 70 MHz 70.3 dBFS SINAD Signal-to-Noise and Distortion Ratio fIN = 170 MHz 69 67.4 dBFS fIN = 240 MHz 68.2 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 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, 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) (3) Units Parameter Test Conditions Typical(4) Limits (Limits) DIGITAL INPUT CHARACTERISTICS (CLK, PD_A,PD_B) VIN(1) Logical “1” Input Voltage VD = 3.3V 2.0 V (min) VIN(0) Logical “0” Input Voltage VD = 3.0V 0.8 V (max) IIN(1) Logical “1” Input Current VIN = 3.3V 10 µA IIN(0) Logical “0” Input Current VIN = 0V −10 µA CIN Digital Input Capacitance 5 pF (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. 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) When the input voltage at any pin exceeds the power supplies (that is, VIN < AGND, or VIN > VA), the current at that pin should be limited to ±5 mA. The ±50 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of ±5 mA to 10. (4) 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. Copyright © 2008–2013, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: ADC12DC105 |
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