TLC1542C, TLC1542I, TLC1542M, TLC1542Q, TLC1543C, TLC1543I, TLC1543Q
10-BIT ANALOG-TO-DIGITAL CONVERTERS WITH
SERIAL CONTROL AND 11 ANALOG INPUTS
SLAS052E – MARCH 1992 – OCTOBER 1998
D
D
D
D
D
D
D
D
D
10-Bit Resolution A/D Converter
11 Analog Input Channels
Three Built-In Self-Test Modes
Inherent Sample-and-Hold Function
Total Unadjusted Error . . .
±
1 LSB Max
On-Chip System Clock
End-of-Conversion (EOC) Output
Terminal Compatible With TLC542
CMOS Technology
DB, DW, J, OR N PACKAGE
(TOP VIEW)
description
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 conver-
sion over the full operating free-air temperature range.
A0
A1
A2
A3
A4
A5
A6
A7
A8
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
EOC
I/O CLOCK
ADDRESS
DATA OUT
CS
REF +
REF –
A10
A9
FK OR FN PACKAGE
(TOP VIEW)
A3
A4
A5
A6
A7
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
A2
A1
A0
VCC
EOC
I/O CLOCK
ADDRESS
DATA OUT
CS
REF +
Copyright
©
1998, Texas Instruments Incorporated
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.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
A8
GND
A9
A10
REF –
1
TI [ TEXAS INSTRUMENTS ]
