ADC0838 Micro Linear Corporation, ADC0838 Datasheet - Page 20

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

ML2281, ML2282, ML2284, ML2288
APPLICATIONS
20
XDR
CONTROLLER PERFORMS A ROUTINE TO DETERMINE WHICH
*V
15% OF V
V
INPUT POLARITY PROVIDES A NON-ZERO OUTPUT CODE.
CC
Operating with Ratiometric Transducers
IN
ZERO
(–) = 0.15V
ADJ.
V
1k
THIS INFORMATION PROVIDES THE EXTRA BITS.
XDR
CC
V
Obtaining 9-Bit Resolution
IN
20k
3k
V
CC
XDR
> 2.5V
V
+
–
V
IN
IN
(Continued)
85% OF V
(5V
(+)
(–)*
ML2281
ML2281
V
DC
CC
ZERO
2.5V
100
–
+
)
ADJ.
V
V
V
CC
REF
REF
CC
120k
0.7 V
240k
0.1
(5V
CC
V
CC
DC
+
10 F
–
+
+
100
)
1 F
V
V
R
R
IN
IN
–
+
Digitizing a Current Flow
(+)
(–)
ML2281
I
LOAD
10k
1k
FS
ADJ.
24k
V
V
REF
CC
(2A FULL-SCALE)
3k
V
IN
+
+
1 F
–15V
15V
+
–
+
V
(5V
10 F
CC
DC
–
+
AMP
DC
OP
DC
)
V
Span Adjust: 0V - V
V
9.1k
600
1k
FS
ADJ.
IN
IN
DIODE CLAMPING IS NOT NEEDED
IF CURRENT IS LIMITED TO 25mA
(+)
(–)
ML2281
Protecting the Input
2k
LM336
V
V
V
V
LOAD
IN
IN
REF
CC
(+)
(–)
ML2281
(5V
V
CC
DC
+
+
1k
10 F
1 F
)
V
CC
IN
10k
ADJ.
SET FOR 3V
–
+
FS
- 3V
(5V
V
CC
DC
+
10 F
)
2k