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TLC541I Datasheet PDF

Part Number TLC541I
Description 8-BIT ANALOG-TO-DIGITAL CONVERTERS
Manufacture etcTI
Total Page 23 Pages
PDF Download Download TLC541I Datasheet PDF

Features: Datasheet pdf D 8-Bit Resolution A/D Converter D Micro processor Peripheral or Stand-Alone Ope ration D On-Chip 12-Channel Analog Mult iplexer D Built-In Self-Test Mode D Sof tware-Controllable Sample and Hold D To tal Unadjusted Error . . . ± 0.5 LSB M ax D TLC541 Is Direct Replacement for M otorola MC145040 and National Semicondu ctor ADC0811. TLC540 Is Capable of High er Speed D Pinout and Control Signals C ompatible With TLC1540 Family of 10-Bit A/D Converters D CMOS Technology TLC5 40I, TLC541I 8-BIT ANALOG-TO-DIGITAL CO NVERTERS WITH SERIAL CONTROL AND 11 INP UTS SLAS065B – OCTOBER 1983 – REVIS ED JUNE 2001 DW OR N PACKAGE (TOP VIEW) INPUT A0 INPUT A1 INPUT A2 INPUT A3 I NPUT A4 INPUT A5 INPUT A6 INPUT A7 INPU T A8 GND 1 2 3 4 5 6 7 8 9 10 20 VCC 19 SYSTEM CLOCK 18 I/O CLOCK 17 ADDRESS INPUT 16 DATA OUT 15 CS 14 REF + 13 RE F – 12 INPUT A10 11 INPUT A9 FN PACK AGE (TOP VIEW) INPUT A2 INPUT A1 INPUT A0 VCC SYSTEM CLOCK PARAMETER Channel Acquisition Sample Time Conversion Time (Max) Samples per Second (Max.

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TLC541I datasheet
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
SLAS065B – OCTOBER 1983 – REVISED JUNE 2001
DW OR N PACKAGE
(TOP VIEW)
INPUT A0
INPUT A1
INPUT A2
INPUT A3
INPUT A4
INPUT A5
INPUT A6
INPUT A7
INPUT A8
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
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.
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
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
Copyright 2001, Texas Instruments Incorporated
1

TLC541I datasheet
TLC540I, TLC541I
8-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL AND 11 INPUTS
SLAS065B OCTOBER 1983 REVISED JUNE 2001
description (continued)
The converters incorporated in the TLC540 and TLC541 feature differential high-impedance reference inputs
that facilitate ratiometric conversion, scaling, and analog circuitry isolation from logic and supply noises. A
switched-capacitor design allows low-error (± 0.5 LSB) conversion in 9 µs for the TLC540 and 17 µs for the
TLC541 over the full operating temperature range.
The TLC540I and TLC541I are characterized for operation from 40°C to 85°C.The TLC541M is characterized
for operation from 55°C to 125°C.
functional block diagram
REF+
14
REF–
13
Analog
Inputs
1
A0 2
A1 3
A2
A3
A4
A5
A6
A7
A8
4
5
6
7
8
9
A9 11
A10 12
12-Channel
Analog
Multiplexer
4
Sample
and
Hold
Input
Address
Register
ADDRESS 17
INPUT
Self-Test
Reference
4
Input
Multiplexer
2
I/O 18
CLOCK
15
CS
SYSTEM 19
CLOCK
typical equivalent inputs
INPUT CIRCUIT IMPEDANCE DURING SAMPLING MODE
INPUT
A0 – A10
1 kTYP
Ci = 60 pF TYP
(equivalent input
capacitance)
8-Bit
Analog-to-Digital
Converter
(Switched-Capacitors)
8
Output
Data
Register
8
8-to-1 Data
Selector
and Driver
16 DATA
OUT
Control Logic
and I/O
Counters
4
INPUT CIRCUIT IMPEDANCE DURING HOLD MODE
INPUT
A0 – A10
5 MTYP
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265




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