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20
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11
A0
A1
A2
A3
A4
A5
A6
A7
A8
GND
V
CC
EOC
I/O CLOCK
ADDRESS
DATA OUT
CS
REF+
REF−
A10
A9
DB, DW, J, OR N PACKAGE
(TOP VIEW)
3 2 1 20 19
9 10 11 12 13
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I/O CLOCK
ADDRESS
DATA OUT
CS
REF+
A3
A4
A5
A6
A7
FK OR FN PACKAGE
(TOP VIEW)
A2
A1
A0
A10
REF −
EOC
A8
GND
A9
V
CC
TLC1542I , , TLC1542M , , TLC1542Q
TLC1542C , TLC1543C , TLC1543I , TLC1543Q
SLAS052G – MARCH 1992 – REVISED JANUARY 2006
10-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL AND 11 ANALOG INPUTS
• 10-Bit Resolution A/D Converter
• 11 Analog Input Channels
• Three Built-In Self-Test Modes
• Inherent Sample-and-Hold Function
• Total Unadjusted Error: ± 1LSB Max
• On-Chip System Clock
• End-of-Conversion (EOC) Output
• Terminal Compatible With TLC542
• CMOS Technology
The TLC1542C, TLC1542I, TLC1542M, TLC1542Q,
TLC1543C, TLC1543I, and TLC1543Q are CMOS
10-bit switched-capacitor successive-approximation
analog-to-digital converters. These devices have
three inputs and a 3-state output [chip select ( CS),
input-output clock (I/O CLOCK), address input
(ADDRESS), and data output (DATA OUT)] that
provide a direct 4-wire interface to the serial port of a
host processor. These devices allow high-speed data
transfers from the host.
In addition to a high-speed A/D converter and
versatile control capability, these devices have an
on-chip 14-channel multiplexer that can select any
one of 11 analog inputs or any one of three internal
self-test voltages. The sample-and-hold function is
automatic. At the end of A/D conversion, the
end-of-conversion (EOC) output goes high to
indicate that conversion is complete. The converter
incorporated in the devices features differential
high-impedance reference inputs that facilitate
ratiometric conversion, scaling, and isolation of
analog circuitry from logic and supply noise. A
switched-capacitor design allows low-error
conversion over the full operating free-air
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.
PRODUCTION DATA information is current as of publication date.
Copyright © 1992–2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.