MAX1492 Maxim, MAX1492 Datasheet - Page 32

• Manufacturer Part Number: MAX1492
• Description: 3.5- and 4.5-Digit / Single-Chip ADCs with LCD Drivers
• Manufacturer: Maxim

3.5- and 4.5-Digit, Single-Chip ADCs
with LCD Drivers
Figure 27. MAX1492 Transfer Function ±2V Range
32
- 1 - - -
LCD
1 - - -
-1999
1999
______________________________________________________________________________________
- 0
- 1
- 2
2
1
0
ADC RESULT
>7CFh
7CFh
002h
001h
000h
FFFh
FFEh
FFDh
830h
<830h
V
4.7µF
IN
2.7V TO
5.25V
-2V
0.1µF
L
ISO
ANALOG INPUT VOLTAGE
10µF
-1mV
0.1µF
0.1µF
0.1µF
0
1mV
AIN+
AIN-
DV
AV
DD
DD
R
HI
LOWBATT
+2V
HOLD
R
LOW
V
(SEG–SEG10)
SEG1–SEG13
NEG
PEAK
0.1µF
(MAX1492)
MAX1494
GND
LOW BATTERY
REF-
Typical Operating Circuit
REF+
4.7µF
CONNECTIONS
(MAX1494 ONLY)
BACKPLANE
V
DISP
DOUT
SCLK
EOC
CLK
DIN
CS