Datasheet

MAX1497/MAX1499
3.5- and 4.5-Digit, Single-Chip ADCs with LED
Drivers and µC Interface
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MAX1497
0.1µF 4.7µF
µC
0.1µF
10µF
2.7V TO
5.25V
AIN+
AIN-
VLED
V
DD
I
SET
V
NEG
GND REF- REF+ GLED
CLK
SCLK
DIN
DOUT
CS
EOC
DIG0–DIG3
DIGIT
CONNECTIONS
SEGA–SEGDP
SEGMENT
CONNECTIONS
V
IN
25kΩ
Typical Operating Circuits
MAX1499
0.1µF 4.7µF
µC
0.1µF
0.1µF
10µF
10µF
L
ISO
2.7V TO
5.25V
AIN+
AIN-
VLED
DV
DD
AV
DD
I
SET
V
NEG
GND REF- REF+ GLED
CLK
SCLK
DIN
DOUT
CS
EOC
DIG0–DIG4
DIGIT
CONNECTIONS
SEGA–SEGDP
SEGMENT
CONNECTIONS
V
IN
LOWBATT
25kΩ