MAX1497 Maxim, MAX1497 Datasheet - Page 3

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

ELECTRICAL CHARACTERISTICS (continued)
(AV
C
Typical values are at T
ANALOG INPUTS (AIN+, AIN-) (bypass to GND with 0.1µF or greater capacitors)
AIN Input Voltage Range (Note 5)
AIN Absolute Input Voltage
Range to GND
Normal-Mode 50Hz and 60Hz
Rejection (Simultaneously)
Common-Mode 50Hz and 60Hz
Rejection (Simultaneously)
Common-Mode Rejection
Input Leakage Current
Input Capacitance
Average Dynamic Input Current
LOW-BATTERY VOLTAGE MONITOR (LOWBATT) (MAX1499 only)
LOWBATT TripThreshold
LOWBATT Leakage Current
Hysteresis
INTERNAL REFERENCE (REF- = GND, INTREF bit = 1) (bypass REF+ to GND with a 4.7µF capacitor)
REF Output Voltage
REF Output Short-Circuit Current
REF Output Temperature
Coefficient
Load Regulation
Line Regulation
Noise Voltage
EXTERNAL REFERENCE (INTREF bit = 0) (bypass REF+ and REF- to GND with 0.1µF or greater capacitors)
REF Input Voltage
Absolute REF+, REF- Input
Voltage to GND
Normal-Mode 50Hz and 60Hz
Rejection (Simultaneously)
Common-Mode 50Hz and 60Hz
Rejection (Simultaneously)
Common-Mode Rejection
Input Leakage Current
REF+
DD
= DV
= C
3.5- and 4.5-Digit, Single-Chip ADCs with LED
PARAMETER
REF-
DD
= V
= 0.1µF, C
DD
_______________________________________________________________________________________
= +2.7V to +5.25V, GND = 0, GLED = 0, V
A
= +25°C, unless otherwise noted.)
VNEG
= 0.1µF. Internal clock mode, unless otherwise noted. All specifications are at T
SYMBOL
TC
CMR
CMR
V
CMR
CMR
REF
VREF
RANGE bit = 0
RANGE bit = 1
Internal clock mode, 50Hz and 60Hz ±2%
External clock mode, 50Hz and 60Hz ±2%,
f
For 50Hz and 60Hz ±2%, R
At DC
(Note 6)
AV
AV
I
0.1Hz to 10Hz
10Hz to 10kHz
Differential (V
Internal clock mode, 50Hz and 60Hz ±2%
External clock mode, 50Hz and 60Hz ±2%,
f
For 50Hz and 60Hz ±2%, R
At DC
CLK
SOURCE
CLK
DD
DD
= 4.9152MHz
= 4.9152MHz
= V
= V
= 0 to 300µA, I
DD
DD
= 5V
= 5V
REF+
Drivers and µC Interface
CONDITIONS
LED
- V
= +2.7V to +5.25V, V
REF-
SINK
)
SOURCE
SOURCE
= 0 to 30µA
< 10kΩ
< 10kΩ
REF+
- V
2.007
MIN
-2.0
-0.2
-2.2
-2.2
-20
REF-
= 2.048V (external reference)
2.048
2.048
2.048
TYP
100
120
150
100
400
100
120
150
100
10
20
10
10
40
50
25
10
1
6
A
2.089
MAX
+2.0
+0.2
+2.2
+2.2
+20
= T
MIN
ppm/°C
to T
UNITS
mV/µA
µV
µV/V
mV
mA
dB
dB
dB
nA
pF
nA
pA
dB
dB
dB
nA
V
V
V
V
P-P
MAX
3
.