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ADC0838B Datasheet(PDF) 1 Page - Texas Instruments

Part # ADC0838B
Description  A/D PERIPHERALS WITH SERIAL CONTROL
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ADC0838B Datasheet(HTML) 1 Page - Texas Instruments

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ADC0834A, ADC0838A, ADC0834B, ADC0838B
A/D PERIPHERALS WITH SERIAL CONTROL
SLAS007 – AUGUST 1985 – REVISED OCTOBER 1986
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Copyright
© 1986, Texas Instruments Incorporated
1
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
Shunt Regulator Allows Operation With
High-Voltage Supplies
Input Range 0 to 5 V With Single 5-V
Supply
Remote Operation With Serial Data Link
Inputs and Outputs are Compatible With
TTL and MOS
Conversion Time of 32 µs at
fclock = 250 kHz
Designed to Be Interchangeable With
National Semiconductor ADC0834 and
ADC0838
DEVICE
TOTAL UNADJUSTED ERROR
DEVICE
A SUFFIX
B SUFFIX
ADC0834
± 1 LSB
± 1/2 LSB
ADC0838
± 1 LSB
± 1/2 LSB
description
These devices are 8-bit successive- approxima-
tion analog-to-digital converters, each with an
input-configurable
multichannel
multi-
plexer and serial input/output. The serial input/
output is configured to interface with standard shift
registers or microprocessors. Detailed informa-
tion on interfacing with most popular microproces-
sors is readily available from the factory.
The
ADC0834
(4-channel)
and
ADC0838
(8-channel) multiplexer is software configured
forsingle-ended or differential inputs as well as
pseudo-differential input assignments. The differ-
ential 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 any
smaller analog voltage span to the full 8 bits of
resolution.
The ADC0834AC, ADC0834BC, ADC0838AC, and ADC0838BC are characterized for operation from 0
°C to
70
°C. The ADC0834AI, ADC0834BI, ADC0838AI, and ADC0838BI are characterized for operation from –40°C
to 85
°C.
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V+
CS
CH0
CH1
CH2
CH3
DGTL GND
VCC
DI
CLK
SARS
DO
REF
ANLG GND
AD0834 . . . N PACKAGE
(TOP VIEW)
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
DGTL GND
VCC
V+
CS
DI
CLK
SARS
DO
SE
REF
ANLG GND
ADC0838 . . . N PACKAGE
(TOP VIEW)
32
1 20 19
910 11 12 13
4
5
6
7
8
18
17
16
15
14
CS
DI
CLK
SARS
DO
CH3
CH4
CH5
CH6
CH7
ADC0838 . . . FN PACKAGE
(TOP VIEW)
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.


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