ADC0838 Micro Linear Corporation, ADC0838 Datasheet - Page 11

• Manufacturer Part Number: ADC0838
• Description: Serial I/O 8-Bit A/D Converters with Multiplexer Options
• Manufacturer: Micro Linear Corporation

*SOME OF THESE FUNCTIONS/PINS ARE NOT AVAILABLE WITH OTHER OPTIONS.
NOTE 1: FOR THE ML2284 DI IS INPUT DIRECTLY TO THE D INPUT OF SELECT 1. SELECT 0 IS FORCED TO A “1”. FOR THE ML2282, DI IS INPUT DIRECTLY TO THE D
INPUT OF ODD/SIGN. SELECT 0 IS FORCED TO A “1” AND SELECT 1 IS FORCED TO A “0”.
DGND*
AGND*
COM*
CH0*
CH1*
CH4*
CH5*
CH6*
CH7*
CH2
CH3
V
V
CLK
V+*
DI*
REF
CS
CC
17
18
16
12
20
1
2
3
4
5
6
7
8
9
V
CC
START
INPUT PROTECTION—ALL LOGIC INPUTS
R
7V SHUNT
REGULATOR
SGL/DIF
R
5-BIT SHIFT-REGISTER
ODD/
SIGN
13
16
17
18
INPUT
TO INTERNAL
CIRCUITRY
R
ADDRESS
MUX
V
SELECT 1
INTERNAL
CIRCUITS
(EQUIVALENT)
CC
Figure 6. ML2288 Functional Block Diagram
R
TO
ANALOG
NOTE 1
MUX
+
R
–
SELECT 0
DECODER
C
R
LADDER
AND
NOTE 1
C
D
C
ML2281, ML2282, ML2284, ML2288
+
–
COMP
COMP
LOGIC
LATCH
PARALLEL XFR
TO SHIFT REGISTER
AND
SAR
R
T
D
DSTART 2
DELAY
TIME
CS
LSB FIRST
B7
B6
B5
B4
B3
B2
B1
B0
MSB FIRST
REGISTER
CS
R
SHIFT
9-BIT
START
C
EOC
EOC
CS
C
Q
D
C
D
C
R
C
D
13
D
Q
Q
Q
R
R
R
SE*
DEOC
CS
CS
CS
SARS*
15
CS
DO
CS
14
DSTART 1
11