TLC542C_14 Datasheet, PDF (2/13 Pages) Texas Instruments – 8-BIT ANALOG-TO-DIGITAL CONVERTERS WITH SERIAL CONTROL AND 11 INPUTS

TLC542C, TLC542I
8-BIT ANALOG-TO-DIGITAL CONVERTERS
WITH SERIAL CONTROL AND 11 INPUTS
SLAS075C – FEBRUARY 1989 – REVISED JUNE 2001
functional block diagram
Sample and
Hold
Analog
Inputs
12-Channel
Analog
Multiplexer
4 _{Input Address}
Register
ADDRESS
INPUT
Self-Test
Reference
4
Input
2
Multiplexer
I/O CLOCK
CS
EOC
typical equivalent inputs
INPUT CIRCUIT IMPEDANCE DURING SAMPLING MODE
INPUT
A0 – A10
1 kΩ TYP
Ci = 60 pF TYP
(equivalent input
capacitance)
REF+
REF–
8-Bit
Analog-to-Digital
Converter
(Switched-Capacitors)
8
Output
8
Data
Register
8-to-1 Data
Selector and
Driver
DATA
OUT
4
Control Logic
and I/O
Counters
INPUT CIRCUIT IMPEDANCE DURING HOLD MODE
INPUT
A0 – A10
5 MΩ TYP
2
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