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TLC1541IN Datasheet Preview

TLC1541IN Datasheet

10-BIT ANALOG-TO-DIGITAL CONVERTER

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D 10-Bit Resolution A/D Converter
D Microprocessor Peripheral or Standalone
Operation
D On-Chip 12-Channel Analog Multiplexer
D Built-In Self-Test Mode
D Software-Controllable Sample-and-Hold
Function
D Total Unadjusted Error . . . ± 1 LSB Max
D Pinout and Control Signals Compatible
With TLC540 and TLC549 Families of 8-Bit
A/D Converters
D CMOS Technology
PARAMETER
Channel Acquisition Sample Time
Conversion Time (Max)
Samples Per Second (Max)
Power Dissipation (Max)
VALUE
5.5 µs
21 µs
32 × 103
6 mW
description
The TLC1541 is a CMOS A/D converter built
around a 10-bit switched-capacitor successive-
approximation A/D converter. The device is
designed for serial interface to a microprocessor
or peripheral using a 3-state output with up to four
control inputs ( including independent SYSTEM
CLOCK, I/O CLOCK, chip select [CS], and
ADDRESS INPUT ). A 2.1-MHz system clock for
the TLC1541, with a design that includes
simultaneous read/write operation, allows high-
speed data transfers and sample rates up to
32 258 samples per second. 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 function that operates automatically.
TLC1541
10-BIT ANALOG-TO-DIGITAL CONVERTER
WITH SERIAL CONTROL AND 11 INPUTS
SLAS073C – DECEMBER 1995 – REVISED AUGUST 1996
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 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)
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 +
TA
0°C to 70°C
– 40°C to 85°C
AVAILABLE OPTIONS
PACKAGE
SMALL
OUTLINE
(DW)
PLASTIC CHIP
CARRIER
(FN)
TLC1541CDW
TLC1541CFN
TLC1541IDW
TLC1541IFN
PLASTIC
DIP
(N)
TLC1541CN
TLC1541IN
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 © 1996, Texas Instruments Incorporated
1




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TLC1541IN Datasheet Preview

TLC1541IN Datasheet

10-BIT ANALOG-TO-DIGITAL CONVERTER

No Preview Available !

TLC1541
10-BIT ANALOG-TO-DIGITAL CONVERTER
WITH SERIAL CONTROL AND 11 INPUTS
SLAS073C – DECEMBER 1995 – REVISED AUGUST 1996
description (continued)
The converters incorporated in the TLC1541 feature differential high-impedance reference inputs that facilitate
ratiometric conversion, scaling, and analog circuitry isolation from logic and supply noises. A totally
switched-capacitor design allows low-error conversion in 21 µs over the full operating temperature range.
The TLC1541 is available in DW, FN, and N packages. The C-suffix versions are characterized for operation
from 0°C to 70°C. The I-suffix versions are characterized for operation from – 40°C to 85°C.
functional block diagram
1
2
3
4
5
ANALOG 6
INPUTS 7
8
9
11
12
12-Channel
Analog
Multiplexer
Sample and
Hold
4 Input Address
Register
REF+
14
REF–
13
10-Bit
Switched-Capacitors
Analog-to-Digital
Converter
10
Output 10
Data
Register
10-to-1 Data
Selector and
Driver
16 DATA
OUT
ADDRESS 17
INPUT
Self-Test
Reference
4
Input
2
Multiplexer
4
Control Logic
and I/O
Counters
I/O CLOCK 18
CS 15
SYSTEM 19
CLOCK
typical equivalent inputs
INPUT CIRCUIT IMPEDANCE DURING SAMPLING MODE
INPUT
A0 – A10
1 kTYP
Ci = 60 pF TYP
(equivalent input
capacitance)
INPUT CIRCUIT IMPEDANCE DURING HOLD MODE
INPUT
A0 – A10
5 MTYP
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number TLC1541IN
Description 10-BIT ANALOG-TO-DIGITAL CONVERTER
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