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ANALOG-TO-DIGITAL CONVERTER. TLC1541 Datasheet

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ANALOG-TO-DIGITAL CONVERTER. TLC1541 Datasheet






TLC1541 CONVERTER. Datasheet pdf. Equivalent




TLC1541 CONVERTER. Datasheet pdf. Equivalent





Part

TLC1541

Description

10-BIT ANALOG-TO-DIGITAL CONVERTER



Feature


D 10-Bit Resolution A/D Converter D Micr oprocessor Peripheral or Standalone Ope ration D On-Chip 12-Channel Analog Mult iplexer D Built-In Self-Test Mode D Sof tware-Controllable Sample-and-Hold Func tion D Total Unadjusted Error . . . ± 1 LSB Max D Pinout and Control Signals Compatible With TLC540 and TLC549 Famil ies of 8-Bit A/D Converters D CMOS Tech nology PARAMETER C.
Manufacture

Texas Instruments

Datasheet
Download TLC1541 Datasheet


Texas Instruments TLC1541

TLC1541; hannel Acquisition Sample Time Conversio n Time (Max) Samples Per Second (Max) P ower Dissipation (Max) VALUE 5.5 µs 2 1 µs 32 × 103 6 mW description The TLC1541 is a CMOS A/D converter built a round a 10-bit switched-capacitor succe ssiveapproximation A/D converter. The d evice is designed for serial interface to a microprocessor or peripheral using a 3-state output wit.


Texas Instruments TLC1541

h up to four control inputs ( including independent SYSTEM CLOCK, I/O CLOCK, ch ip select [CS], and ADDRESS INPUT ). A 2.1-MHz system clock for the TLC1541, w ith a design that includes simultaneous read/write operation, allows highspeed data transfers and sample rates up to 32 258 samples per second. In addition to the high-speed converter and versati le control logic, .


Texas Instruments TLC1541

there is an on-chip, 12-channel analog m ultiplexer that can be used to sample a ny one of 11 inputs or an internal self -test voltage and a sample-andhold func tion that operates automatically. INPU T A8 GND INPUT A9 INPUT A10 REF– TLC 1541 10-BIT ANALOG-TO-DIGITAL CONVERTER WITH SERIAL CONTROL AND 11 INPUTS SLAS 073C – DECEMBER 1995 – REVISED AUGU ST 1996 DW OR N PACKAGE .

Part

TLC1541

Description

10-BIT ANALOG-TO-DIGITAL CONVERTER



Feature


D 10-Bit Resolution A/D Converter D Micr oprocessor Peripheral or Standalone Ope ration D On-Chip 12-Channel Analog Mult iplexer D Built-In Self-Test Mode D Sof tware-Controllable Sample-and-Hold Func tion D Total Unadjusted Error . . . ± 1 LSB Max D Pinout and Control Signals Compatible With TLC540 and TLC549 Famil ies of 8-Bit A/D Converters D CMOS Tech nology PARAMETER C.
Manufacture

Texas Instruments

Datasheet
Download TLC1541 Datasheet




 TLC1541
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




 TLC1541
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




 TLC1541
operating sequence
TLC1541
10-BIT ANALOG-TO-DIGITAL CONVERTER
WITH SERIAL CONTROL AND 11 INPUTS
SLAS073C – DECEMBER 1995 – REVISED AUGUST 1996
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
I/O
CLOCK
Don’t Care
Access
Cycle B
Sample
Cycle B
tconv
See Note A
Access
Cycle C
Sample
Cycle C
CS
ADDRESS
INPUT
DATA
OUT
See Note C
MSB
LSB
B3 B2 B1 B0
Don’t Care
A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
twH(CS)
HI-Z State
MSB
LSB
C3 C2 C1 C0
Don’t Care
B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
HI-Z
State
A9
Previous Conversion Data A
Conversion Data B
B9
MSB
LSB MSB
MSB
LSB MSB
(see Note B)
NOTES: A. The conversion cycle, which requires 44 system clock periods, initiates on the tenth falling edge of the I/O clock after CS goes low
for the channel whose address exists in memory at that time. When CS is kept low during conversion, the I/O clock must remain
low for at least 44 system clock cycles to allow the conversion to complete.
B. The most significant bit (MSB) is automatically placed on the DATA OUT bus after CS is brought low. The remaining nine bits (A8–A0)
clock out on the first nine I/O clock falling edges.
C. To minimize errors caused by noise at the CS input, the internal circuitry waits for three system clock cycles (or less) after a
chip-select falling edge is detected before responding to control input signals. Therefore, no attempt should be made to clock-in
address data until the minimum chip-select setup time elapses.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.5 V
Input voltage range, VI (any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to VCC + 0.3 V
Output voltage range, VO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 0.3 V to VCC + 0.3 V
Peak input current (any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 10 mA
Peak total input current (all inputs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 30 mA
Operating free-air temperature range, TA: C suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
I suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Case temperature for 10 seconds, TC: FN package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from the case for 10 seconds: DW or N package . . . . . . . . . . . 260°C
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values are with respect to digital ground with REF – and GND wired together (unless otherwise noted).
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
3






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