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ADC12L066 Datasheet(PDF) 6 Page - Texas Instruments |
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ADC12L066 Datasheet(HTML) 6 Page - Texas Instruments |
6 / 36 page ADC12L066 SNAS153I – NOVEMBER 2001 – REVISED MARCH 2013 www.ti.com Converter Electrical Characteristics Unless otherwise specified, the following specifications apply for AGND = DGND = DR GND = 0V, VA = VD = +3.3V, VDR = +2.5V, PD = 0V, VREF = +1.0V, VCM = 1.0V, fCLK = 66 MHz, tr = tf = 2 ns, CL = 15 pF/pin. Boldface limits apply for TJ = TMIN to TMAX: all other limits TJ = 25°C (1) (2) (3) (4) Typical Limits Units Symbol Parameter Conditions (4) (4) (Limits) STATIC CONVERTER CHARACTERISTICS Resolution with No Missing Codes 12 Bits +2.7 LSB (max) INL Integral Non Linearity(5) ±1.2 −3 LSB (min) +1 LSB (max) DNL Differential Non Linearity ±0.4 −0.95 LSB (min) Positive Error −0.15 ±3 %FS (max) GE Gain Error +4 %FS (max) Negative Error +0.4 −5 %FS (min) Offset Error (VIN+ = VIN−) +0.2 ±1.3 %FS (max) Under Range Output Code 0 0 Over Range Output Code 4095 4095 REFERENCE AND ANALOG INPUT CHARACTERISTICS 0.5 V (min) VCM Common Mode Input Voltage 1.0 1.5 V (max) (CLK LOW) 8 pF CIN VIN Input Capacitance (each pin to GND) VIN + 1.0 Vdc + 1 VP-P (CLK HIGH) 7 pF 0.8 V (min) VREF Reference Voltage(6) 1.0 1.5 V (max) Reference Input Resistance 100 M Ω (min) (1) The inputs are protected as shown below. Input voltages 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 VA or below GND by more than 100 mV. As an example, if VA is 3.3V, the full-scale input voltage must be ≤3.4V to ensure accurate conversions. (2) To ensure accuracy, it 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 = +1.0V (2 VP-P differential input), the 12-bit LSB is 488 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 LSB, from the straight line that passes through positive and negative full-scale. (6) Optimum dynamic performance will be obtained by keeping the reference input in the 0.8V to 1.5V range. The LM4051CIM3-ADJ or the LM4051CIM3-1.2 bandgap voltage reference is recommended for this application. 6 Submit Documentation Feedback Copyright © 2001–2013, Texas Instruments Incorporated Product Folder Links: ADC12L066 |
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