Rainbow Electronics MAX1367 User Manual
Page 18
MAX1365/MAX1367
The transfer function for the MAX1367 with AIN+ - AIN-
< 0 and RANGE = GND is:
The transfer function for the MAX1365 with AIN+ - AIN-
≥ 0 and RANGE = DV
DD
is:
The transfer function for the MAX1365 with AIN+ - AIN-
< 0 and RANGE = DV
DD
is:
( )
.
,
6
1 024
20 000
10 1
COUNT
V
V
V
V
x
x
AIN
AIN
REF
REF
=
+
+ −
−
+ −
−
( )
.
,
5
1 024
20 000
10
COUNT
V
V
V
V
x
x
AIN
AIN
REF
REF
=
+ −
−
+ −
−
( )
.
4
1 024
2000
1
COUNT
V
V
V
V
x
AIN
AIN
REF
REF
=
+
+ −
−
+ −
−
Stand-Alone, 4.5-/3.5-Digit Panel Meters
with 4–20mA Output
18
______________________________________________________________________________________
- FS
+ FS
ADC OUTPUT CODE
0
DAC OUTPUT VOL
TAGE (V)
0
1. 25
UNIPOLAR :
BIPLOLAR :
FS = FULL SCALE
Figure 11. DAC Output Voltage vs. ADC Output Code
UNIPOLAR :
BIPLOLAR :
ADC OUTPUT CODE
4-20OUT (mA)
20
FS = FULL SCALE
0
16
4
- FS
+ FS
0
CURRENT
OFFSET
ENABLED
(EN_I = 1)
12
Figure 12. Output Current (4-20OUT) vs. ADC Output Code
(Current Offset Enabled)
OFFSET ENABLED :
OFFSET DISABLED :
V/I CONVERTER INPUT ( V )
0
4-20OUT (mA)
20
0
16
4
1. 25
Figure 14. 4-20OUT Output Current vs. V/I Converter Input
Voltage
UNIPOLAR :
BIPLOLAR :
ADC OUTPUT CODE
4-20OUT (mA)
16
FS = FULL SCALE
0
- FS
+ FS
0
CURRENT
OFFSET
DISABLED
(EN_I = 0)
8
Figure 13. Output Current (4-20OUT) vs. ADC Output Code
(Current Offset Disabled)