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TLC540I Datasheet(PDF) 2 Page - Texas Instruments |
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TLC540I Datasheet(HTML) 2 Page - Texas Instruments |
2 / 11 page TLC540I, TLC541I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 INPUTS SLAS065A – OCTOBER 1983 – REVISED MARCH 1995 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 The converters incorporated in the TLC540 and TLC541 feature differential high-impedance reference inputs that facilitate ratiometric conversion, scaling, and analog circuitry isolation from logic and supply noises. A switched-capacitor design allows low-error ( ±0.5 LSB) conversion in 9 µs for the TLC540 and 17 µs for the TLC541 over the full operating temperature range. The TLC540I and TLC541I are characterized for operation from – 40 °C to 85°C.The TLC541M is characterized for operation from – 55 °C to 125°C. functional block diagram 1 2 3 4 5 6 7 8 9 11 12 SYSTEM CLOCK CS I/O CLOCK ADDRESS INPUT 8-Bit Analog-to-Digital Converter (Switched-Capacitors) 8 4 2 4 4 8 REF– REF+ DATA OUT 8-to-1 Data Selector and Driver Control Logic and I/O Counters Output Data Register Input Multiplexer Self-Test Reference Input Address Register Sample and Hold 12-Channel Analog Multiplexer Analog Inputs A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 14 13 16 17 18 15 19 typical equivalent inputs INPUT CIRCUIT IMPEDANCE DURING SAMPLING MODE INPUT CIRCUIT IMPEDANCE DURING HOLD MODE 1 k Ω TYP Ci = 60 pF TYP (equivalent input capacitance) 5 M Ω TYP INPUT A0 – A10 INPUT A0 – A10 |
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