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ADC12L066 Datasheet(PDF) 6 Page - Texas Instruments |
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ADC12L066 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 29 page ADC12020 SNAS186B – APRIL 2003 – REVISED MARCH 2013 www.ti.com CONVERTER 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) Units Symbol Parameter Conditions Typical (4) Limits (4) (Limits) STATIC CONVERTER CHARACTERISTICS Resolution with No Missing Codes 12 Bits (min) +1.7 LSB (max) INL Integral Non Linearity (5) ±0.55 -1.4 LSB (min) +0.9 LSB (max) DNL Differential Non Linearity ±0.35 -1.0 LSB (min) GE Gain Error ±0.05 2.9 %FS (max) Offset Error (VIN+ = VIN−) −0.04 ±1.75 %FS (max) Under Range Output Code 0 0 Over Range Output Code 4095 4095 DYNAMIC CONVERTER CHARACTERISTICS FPBW Full Power Bandwidth 0 dBFS Input, Output at −3 dB 100 MHz fIN = 1 MHz, VIN = −0.5 dBFS 70 dB SNR Signal-to-Noise Ratio fIN = 4.4 MHz, VIN = −0.5 dBFS 70 dB fIN = 10.1 MHz, VIN = −0.5 dBFS 70 67 dB (min) fIN = 1 MHz, VIN = −0.5 dBFS 70 dB SINAD Signal-to-Noise and Distortion fIN = 4.4 MHz, VIN = −0.5 dBFS 70 dB fIN = 10.1MHz, VIN = −0.5 dBFS 69 67 dB (min) fIN = 1 MHz, VIN = −0.5 dBFS 11.3 dB ENOB Effective Number of Bits fIN = 4.4 MHz, VIN = −0.5 dBFS 11.3 dB fIN = 10.1 MHz, VIN = −0.5 dBFS 11.3 10.8 dB (min) fIN = 1 MHz, VIN = −0.5 dBFS −83 dB fIN = 4.4 MHz, VIN = −0.5 dBFS −83 dB THD Total Harmonic Distortion +25°C −83 -74 dB (min) fIN = 10.1 MHz, VIN = −0.5 dBFS +85°C -71 dB (min) fIN = 1 MHz, VIN = −0.5 dBFS 86 dB fIN = 4.4 MHz, VIN = −0.5 dBFS 86 dB SFDR Spurious Free Dynamic Range +25°C 86 71 dB (min) fIN = 10.1 MHz, VIN = −0.5 dBFS +85°C 68 dB (min) IMD Intermodulation Distortion fIN = 4.7 MHz and 5.3 MHz, each = −7 dBFS −73 dBFS REFERENCE AND ANALOG INPUT CHARACTERISTICS VCM Common Mode Input Voltage VA/2 V (CLK LOW) 8 pF CIN VIN Input Capacitance (each pin to GND) VIN = 2.5 Vdc + 0.7 Vrms (CLK HIGH) 7 pF 1.0 V (min) VREF Reference Voltage (6) 2.00 2.4 V (max) Reference Input Resistance 100 M Ω(min) (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 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 V is 4.75V, the full-scale input voltage must be ≤4.85V to ensure accurate conversions. (2) To ensure accuracy, Ait 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) Typical figures are at TA = TJ = 25°C, and represent most likely parametric norms. Test limits are specified to TI's AOQL (Average Outgoing Quality Level). (5) Integral Non Linearity is defined as the deviation of the analog value, expressed in LSBs, from the straight line that passes through positive and negative full-scale. (6) Optimum performance will be obtained by keeping the reference input in the 1.8V to 2.2V range. The LM4051CIM3-ADJ (SOT-23 package) is recommended for this application. 6 Submit Documentation Feedback Copyright © 2003–2013, Texas Instruments Incorporated Product Folder Links: ADC12020 |
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