MAX1367 Maxim Integrated Products, MAX1367 Datasheet - Page 17

• Manufacturer Part Number: MAX1367
• Description: (MAX1365 / MAX1367) Digit Panel Meters
• Manufacturer: Maxim Integrated Products

Figures 7–10 show the transfer functions of the
MAX1365/MAX1367. The output data is stored in the
ADC data register in two’s complement.
The transfer function for the MAX1365 with AIN+ - AIN-
≥ 0 and RANGE = GND is:
Figure 7. MAX1365 Transfer Function—±2V Range
Figure 8. MAX1365 Transfer Function—±200mV Range
( )
1
- 1 - - - -
- 1 - - - -
-19,999
1 - - - -
-19,999
1 - - - -
19,999
19,999
LED
LED
COUNT
- 0
- 1
- 2
- 0
- 1
- 2
2
1
0
2
1
0
-200mV
-2V
=
______________________________________________________________________________________
1 024
Stand-Alone, 4.5-/3.5-Digit Panel Meters
.
ANALOG INPUT VOLTAGE
ANALOG INPUT VOLTAGE



V
-100µV 100µV
V
-10µV
REF
AIN
ADC Transfer Functions
+ −
+ −
0
0
Transfer Functions
10µV
V
V
AIN
REF
−
−
x
20 000
+200mV
+2V
,



The transfer function for the MAX1365 with AIN+ - AIN-
< 0 and RANGE = GND is:
The transfer function for the MAX1367 with AIN+ - AIN-
≥ 0 and RANGE = GND is:
Figure 9. MAX1367 Transfer Function—±200mV Range
Figure 10. MAX1367 Transfer Function—±2V Range
( )
2
( )
3
with 4–20mA Output
- 1 - - -
COUNT
- 1 - - -
LED
1 - - -
-1999
LED
1 - - -
-1999
1999
1999
COUNT
- 0
- 1
- 2
- 0
- 1
- 2
2
1
0
2
1
0
-200mV
-2V
=
1 024
=
.
1 024
.



ANALOG INPUT VOLTAGE
ANALOG INPUT VOLTAGE
V
V



-100µV 100µV
REF
AIN
-1mV
V
V
REF
AIN
+ −
+ −
0
0
+ −
+ −
1mV
V
V
AIN
REF
V
V
AIN
REF
−
−
−
x
−
20 000
x
+200mV
+2V
2000
,

 +




1
17