MAX1497 Maxim, MAX1497 Datasheet - Page 7

• Manufacturer Part Number: MAX1497
• Description: 3.5- and 4.5-Digit / Single-Chip ADCs with LED Drivers and C Interface
• Manufacturer: Maxim

(AV
REF- = GND, C
700
600
500
400
300
200
100
700
690
660
650
640
630
620
610
600
300
250
200
150
100
DD
680
670
50
0
0
2.75
2.75
-40
= DV
3.5- and 4.5-Digit, Single-Chip ADCs with LED
vs. SUPPLY VOLTAGE (MAX1499)
vs. SUPPLY VOLTAGE (MAX1499)
ANALOG SUPPLY
DIGITAL SUPPLY
vs. TEMPERATURE (MAX1497)
DD
3.25
3.25
-15
DIGITAL SUPPLY
SHUTDOWN CURRENT
ANALOG SUPPLY
REF+
= V
SUPPLY CURRENT
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TEMPERATURE ( ° C)
DD
3.75
3.75
10
= C
_______________________________________________________________________________________
= +2.7V to +5.25V, V
REF-
4.25
4.25
35
= 0.1µF, RANGE bit = 1, internal clock mode, C
4.75
4.75
60
5.25
5.25
85
LED
300
250
200
150
100
700
650
600
550
500
450
400
350
300
250
200
150
100
= +2.7V to +5.25V, GND = 0, GLED = 0, external reference mode, REF+ = 2.048V,
50
50
0
0
2.70
2.70
0
DIGITAL SUPPLY
vs. SUPPLY VOLTAGE (MAX1497)
vs. SUPPLY VOLTAGE (MAX1497)
vs. TEMPERATURE (MAX1499)
10
3.21
3.21
ANALOG SUPPLY
SHUTDOWN CURRENT
SHUTDOWN CURRENT
20
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
3.72
3.72
Drivers and µC Interface
30
40
4.23
4.23
Typical Operating Characteristics
50
VNEG
4.74
4.74
60
= 0.1µF. T
5.25
5.25
70
-0.01
-0.06
-0.11
-0.16
A
0.19
0.14
0.09
0.04
700
600
500
400
300
200
100
350
300
200
150
100
250
50
= +25°C, unless otherwise noted.)
0
0
2.75
-40
0
OFFSET ERROR vs. SUPPLY VOLTAGE
ANALOG SUPPLY
vs. TEMPERATURE (MAX1499)
vs. TEMPERATURE (MAX1497)
10
DIGITAL SUPPLY
3.25
-15
SHUTDOWN CURRENT
20
SUPPLY CURRENT
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE ( ° C)
3.75
10
MAX1499
30
40
4.25
35
50
4.75
60
60
5.25
70
85
7