TLC2543C, TLC2543I, TLC2543M
12-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL AND 11 ANALOG INPUTS
SLAS079F – DECEMBER 1993 – REVISED NOVEMBER 2001
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
12-Bit-Resolution A/D Converter
10-µs Conversion Time Over Operating
Temperature
11 Analog Input Channels
3 Built-In Self-Test Modes
Inherent Sample-and-Hold Function
Linearity Error . . . ±1 LSB Max
On-Chip System Clock
End-of-Conversion Output
Unipolar or Bipolar Output Operation
(Signed Binary With Respect to 1/2 the
Applied Voltage Reference)
Programmable MSB or LSB First
Programmable Power Down
Programmable Output Data Length
CMOS Technology
Application Report Available
†
description
The TLC2543C and TLC2543I are 12-bit, switched-
capacitor, successive-approximation, analog-to-
digital converters. Each device, with three control
inputs [chip select (CS
), the input-output clock, and
the address input (DATA INPUT)], is designed for
communication with the serial port of a host processor
or peripheral through a serial 3-state output. The
device allows high-speed data transfers from the
host.
In addition to the high-speed converter and versatile control capability, the device has an on-chip 14-channel
multiplexer that can select any one of 11 inputs or any one of three internal self-test voltages. The
sample-and-hold function is automatic. At the end of conversion, the end-of-conversion (EOC) output goes high
to indicate that conversion is complete. The converter incorporated in the device 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
temperature range.
The TLC2543C is characterized for operation from T
A
= 0°C to 70°C. The TLC2543I is characterized for
operation from T
A
= –40°C to 85°C. The TLC2543M is characterized for operation from T
A
= –55°C to 125°C.
Copyright 2001, 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.
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.
†
Microcontroller Based Data Acquisition Using the TLC2543 12-bit Serial-Out ADC (SLAA012)
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11
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
GND
V
CC
EOC
I/O CLOCK
DATA INPUT
DATA OUT
CS
REF+
REF–
AIN10
AIN9
(TOP VIEW)
DB, DW, J, OR N PACKAGE
3 2 1 20 19
910111213
4
5
6
7
8
18
17
16
15
14
I/O CLOCK
DATA INPUT
DATA OUT
CS
AIN3
AIN4
AIN5
AIN6
AIN7
FN PACKAGE
(TOP VIEW)
AIN1
AIN0
AIN10
REF –
AIN2
EOC
AIN8
GND
AIN9
V
CC
REF+
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
