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TLC545C Datasheet(PDF) 1 Page - Texas Instruments |
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TLC545C Datasheet(HTML) 1 Page - Texas Instruments |
1 / 13 page TLC545C, TLC545I, TLC546C, TLC546I 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 19 INPUTS SLAS066B – DECEMBER 1985 – REVISED OCTOBER 1996 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 8-Bit Resolution A/D Converter D Microprocessor Peripheral or Stand-Alone Operation D On-Chip 20-Channel Analog Multiplexer D Built-in Self-Test Mode D Software-Controllable Sample and Hold D Total Unadjusted Error... ±0.5 LSB Max D Timing and Control Signals Compatible With 8-Bit TLC540 and 10-Bit TLC1540 A/D Converter Families D CMOS Technology PARAMETER TL545 TL546 Channel Acquisition Time Conversion Time (Max) Sampling Rate (Max) Power Dissipation (Max) 1.5 µs 9 µs 76 x 103 15 mW 2.7 µs 17 µs 40 x 103 15 mW description The TLC545 and TLC546 are CMOS analog-to-digital converters built around an 8-bit switched capacitor successive-approximation analog-to-digital converter. They are designed for serial interface to a microprocessor or peripheral via a 3-state output with up to four control inputs including independent SYSTEM CLOCK, I/O CLOCK, chip select (CS), and ADDRESS INPUT. A 4-MHz system clock for the TLC545 and a 2.1-MHz system clock for the TLC546 with a design that includes simultaneous read/write operation allowing high-speed data transfers and sample rates of up to 76,923 samples per second for the TLC545, and 40,000 samples per second for the TLC546. In addition to the high-speed converter and versatile control logic, there is an on-chip 20-channel analog multiplexer that can be used to sample any one of 19 inputs or an internal self-test voltage, and a sample-and-hold that can operate automatically or under microprocessor control. The converters incorporated in the TLC545 and TLC546 feature differential high-impedance reference inputs that facilitate ratiometric conversion, scaling, and analog circuitry isolation from logic and supply noises. A totally switched capacitor design allows low-error ( ±0.5 LSB) conversion in 9 µs for the TLC545, and 17 µs for the TLC546, over the full operating temperature range. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. Copyright © 1996, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 INPUT A0 INPUT A1 INPUT A2 INPUT A3 INPUT A4 INPUT A5 INPUT A6 INPUT A7 INPUT A8 INPUT A9 INPUT A10 INPUT A11 INPUT A12 GND VCC SYSTEM CLOCK I/O CLOCK ADDRESS INPUT DATA OUT CS REF + REF – INPUT A18 INPUT A17 INPUT A16 INPUT A15 INPUT A14 INPUT A13 N PACKAGE (TOP VIEW) 32 1 13 14 5 6 7 8 9 10 11 ADDRESS INPUT DATA OUT CS REF + REF – INPUT A18 INPUT A17 INPUT A4 INPUT A5 INPUT A6 INPUT A7 INPUT A8 INPUT A9 INPUT A10 4 15 16 17 18 FN PACKAGE (TOP VIEW) 28 27 26 25 24 23 22 21 20 19 12 |
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