TLC540I Datasheet, PDF (1/11 Pages) Texas Instruments – 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 INPUTS

D 8-Bit Resolution A/D Converter
D Microprocessor Peripheral or Stand-Alone
Operation
D On-Chip 12-Channel Analog Multiplexer
D Built-in Self-Test Mode
D Software-Controllable Sample and Hold
D Total Unadjusted Error . . . ± 0.5 LSB Max
D TLC541 is Direct Replacement for Motorola
MC145040 and National Semiconductor
ADC0811. TLC540 is Capable of Higher
Speed
D Pinout and Control Signals Compatible
with TLC1540 Family of 10-Bit A/D
Converters
D CMOS Technology
TLC540I, TLC541I
8-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL AND 11 INPUTS
SLAS065A – OCTOBER 1983 – REVISED MARCH 1995
DW OR N PACKAGE
(TOP VIEW)
INPUT A0 ₁
INPUT A1 ₂
INPUT A2 ₃
INPUT A3 ₄
INPUT A4 ₅
INPUT A5 ₆
INPUT A6 ₇
INPUT A7 8
INPUT A8 9
GND 10
20 ^V_CC
19 ^{SYSTEM CLOCK}
18 ^{I/O CLOCK}
17 ^{ADDRESS INPUT}
16 ^{DATA OUT}
15 ^CS
14 ^{REF +}
13 REF –
12 INPUT A10
11 INPUT A9
FN PACKAGE
(TOP VIEW)
PARAMETER
Channel Acquisition Sample Time
Conversion Time (Max)
Samples per Second (Max)
Power Dissipation (Max)
TLC540
2 µs
9 µs
75 x 103
12.5 mW
TLC541
3.6 µs
17 µs
40 x 103
12.5 mW
description
The TLC540 and TLC541 are CMOS A / D
converters built around an 8-bit switched-
capacitor successive-approximation A/D
converters. They are designed for serial interface
to a microprocessor or peripheral via a 3-state
INPUT A3
INPUT A4
INPUT A5
INPUT A6
INPUT A7
3 2 1 20 19
4
18
5
17
6
16
7
15
8
14
9 10 11 12 13
I/O CLOCK
ADDRESS INPUT
DATA OUT
CS
REF +
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 TLC540 and a 2.1-MHz
system clock for the TLC541 with a design that
includes simultaneous read/write operation allow high-speed data transfers and sample rates of up to
75,180samples per second for the TLC540 and 40,000 samples per second for the TLC541. In addition to the
high-speed converter and versatile control logic, there is an on-chip 12-channel analog multiplexer that can be
used to sample any one of 11 inputs or an internal self-test voltage, and a sample-and-hold that can operate
automatically or under microprocessor control. Detailed information on interfacing to most popular
microprocessors is readily available from the factory.
AVAILABLE OPTIONS
PACKAGE
TA
SO PLASTIC DIP PLASTIC DIP
(DW)
(N)
– 40°C to 85°C
—
TLC541IDW
TLC540IN
TLC541IN
– 55°C to 125°C
—
TLC541MN
CHIP CARRIER
(FN)
TLC540IFN
TLC541IFN
—
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
Copyright © 1995, Texas Instruments Incorporated
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