TLC0834C, TLC0834I, TLC0838C, TLC0838I
8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL
SLAS094E – MARCH 1995 – REVISED OCTOBER 2000
D
D
D
D
D
D
8-Bit Resolution
Easy Microprocessor Interface or
Stand-Alone Operation
Operates Ratiometrically or With 5-V
Reference
4- or 8-Channel Multiplexer Options With
Address Logic
Input Range 0 to 5 V With Single 5-V Supply
Remote Operation With Serial Data Link
D
D
D
D
Inputs and Outputs Are Compatible With
TTL and MOS
Conversion Time of 32
µs
at
f
clock
= 250 kHz
Functionally Equivalent to the ADC0834
and ADC0838 Without the Internal Zener
Regulator Network
Total Unadjusted Error . . .
±1
LSB
description
These devices are 8-bit successive- approximation analog-to-digital converters, each with an
input-configurable multichannel multiplexer and serial input/output. The serial input/ output is configured to
interface with standard shift registers or microprocessors. Detailed information on interfacing with most popular
microprocessors is readily available from the factory.
The TLC0834 (4-channel) and TLC0838 (8-channel) multiplexer is software-configured for single-ended or
differential inputs as well as pseudodifferential input assignments. The differential analog voltage input allows
for common-mode rejection or offset of the analog zero input voltage value. In addition, the voltage reference
input can be adjusted to allow encoding of any smaller analog voltage span to the full 8 bits of resolution.
The TLC0834C and TLC0838C are characterized for operation from 0°C to 70°C. The TLC0834I and TLC0838I
are characterized for operation from – 40°C to 85°C. The TLC0834Q is characterized for operation from – 40°C
to 125°C.
TLC0834 . . . D OR N PACKAGE
(TOP VIEW)
TLC0834 . . . PW PACKAGE
(TOP VIEW)
TLC0838 . . . PW, DW, OR N PACKAGE
(TOP VIEW)
NC
CS
CH0
CH1
CH2
CH3
DGTL GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
DI
CLK
SARS
DO
REF
ANLG GND
NC
CS
CH0
CH1
CH2
CH3
DGTL GND
NC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
NC
CS
SARS
DO
REF
ANLG GND
NC
NC – No internal connection
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
DGTL GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
NC
CS
DI
CLK
SARS
DO
SE
REF
ANLG GND
AVAILABLE OPTIONS
PACKAGE
TA
SMALL
OUTLINE
(D)
TLC0834CD
TLC0834ID
—
SMALL
OUTLINE
(DW)
TLC0838CDW
TLC0838IDW
—
PLASTIC DIP
(N)
TLC0834CN
TLC0834IN
TLC0834QN
TLC0838CN
TLC0838IN
—
TSSOP
(PW)
TLC0834CPW TLC0838CPW
TLC0834IPW TLC0838IPW
—
0°C to 70°C
– 40°C to 85°C
– 40°C to 125°C
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.
Copyright
©
2000, Texas Instruments Incorporated
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
1
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