Datasheet

MAX1447/MAX1496/MAX1498
3.5- and 4.5-Digit, Single-Chip ADCs
with LED Drivers
4 _______________________________________________________________________________________
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CHARGE PUMP
Output Voltage VNEG C
VNEG
= 0.1µF to GND
-2.60 -2.42 -2.30
V
DIGITAL INPUTS (INTREF, RANGE, PEAK, HOLD, DPSET1, DPSET2, DPON)
Input Current I
IN
V
IN
= 0 or DV
DD
= V
DD
-10 +10 µA
MAX1447/MAX1498
0.3 x
DV
DD
Input Low Voltage V
INL
MAX1496
0.3 x
V
DD
V
MAX1447/MAX1498
0.7 x
DV
DD
Input High Voltage V
INH
MAX1496
0.7 x
V
DD
V
Input Hysteresis V
HYS
200
mV
POWER SUPPLY (Note 7)
V
DD
Voltage V
DD
MAX1496
2.70 5.25
V
AV
DD
Voltage AV
DD
MAX1447/MAX1498
2.70 5.25
V
DV
DD
Voltage DV
DD
MAX1447/MAX1498
2.70 5.25
V
Power-Supply Rejection V
DD
PSRR (Note 8) 80 dB
Power-Supply Rejection AV
DD
PSRR
A
(Note 8) 80 dB
Power-Supply Rejection DV
DD
PSRR
D
(Note 8)
100
dB
V
DD
= 5.25V
664
744
V
DD
= 3.3V
618
663
MAX1496 V
DD
Current (Note 9) I
VDD
Standby mode
268
325
µA
AV
DD
= 5.25V 640
AV
DD
= 3.3V 600
MAX1447/MAX1498 AV
DD
Current (Note 9)
I
AVDD
Standby mode 305
µA
DV
DD
= 5.25V 320
DV
DD
= 3.3V 180
MAX1447/MAX1498 DV
DD
Current (Note 9)
I
DVDD
Standby mode 20
µA
LED Drivers Bias Current From AV
DD
or V
DD
120
µA
ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= V
DD
= +2.7V to +5.25V, GND = 0, V
LED
= +2.7V to +5.25V, GLED = 0, V
REF+
- V
REF-
= 2.048V (external reference),
C
REF+
= C
REF-
= 0.1µF, C
VNEG
= 0.1µF. Internal clock mode, unless otherwise noted. All specifications are at T
A
= T
MIN
to T
MAX
.
Typical values are at T
A
= +25°C, unless otherwise noted.)