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