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TLC3574IDW Datasheet(PDF) 6 Page - Texas Instruments |
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TLC3574IDW Datasheet(HTML) 6 Page - Texas Instruments |
6 / 49 page TLC3574, TLC3578, TLC2574, TLC2578 5V ANALOG, 3/5V DIGITAL, 14/12BIT, 200KSPS, 4/8CHANNEL SERIAL ANALOGTODIGITAL CONVERTERS WITH ±10V INPUTS SLAS262C − OCTOBER 2000 − REVISED MAY 2003 6 WWW.TI.COM general electrical characteristics over recommended operating free-air temperature range, single- ended input, normal long sampling, 200 KSPS, AVDD = 5 V, VREFP = 4 V, VREFM = 0 V, SCLK frequency = 25 MHz, fixed channel at CONV mode 00, analog input signal source resistance = 25 Ω (unless otherwise noted) TLC3574/78 and TLC2574/78 PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT Resolution 14 bits Analog Input Voltage range −10 10 V Selected analog input channel bias current Selected channel at 10 V 0.8 1.6 mA Selected analog input channel bias current Selected channel at –10 V −1.6 −1.2 mA Impedance 10 k Ω Capacitance 30 pF Reference VREFP Positive reference voltage 3.96 4 4.04 V VREFM Negative reference voltage 0 AGND V Input impedance No conversion (AVDD = 5V, CS= DVDD, SCLK=DGND) 100 M Ω Input impedance Normal long sampling (AVDD = 5V, CS=DGND, SCLK = 25 MHz, External conversion clock) 8.3 12.5 k Ω No conversion (AVDD = 5 V, SCLK = DGND, CS = DVDD) 1.5 µA Reference current Normal long sampling (AVDD = 5 V, CS = DGND, External conversion clock, SCLK = 25 MHz, VREF = 5 V) 0.4 0.6 mA Internal oscillation frequency DVDD = 2.7 V – 5.5 V 6.5 MHz Internal OSC, 6.5 MHz minimum TLC3574/78 2.785 t(conv) Conversion time Internal OSC, 6.5 MHz minimum TLC2574/78 2.015 S t(conv) Conversion time Conversion clock is external source, TLC3574/78 2.895 µS Conversion clock is external source, SCLK = 25 MHz (see Note 1) TLC2574/78 2.095 Acquisition time Normal short sampling 1.2 µS Throughput rate (see Note 2) Normal long sampling, fixed channel in mode 00 or 01 200 KSPS † All typical values are at TA = 25°C. NOTES: 1. Conversion time t(conv) is (18 × 4 × SCLK) + 15 ns for TLC3574/78. Conversion time is (13 × 4 × SCLK) + 15 ns for TLC2574/78. 2. This is for a fixed channel in conversion mode 00 or 01. When switching the channels, additional multiplexer setting time is required to overcome the memory effect of the charge redistribution DAC. |
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