MAX1492 Maxim, MAX1492 Datasheet - Page 3

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

ELECTRICAL CHARACTERISTICS (continued)
(AV
All specifications are at T
Normal-Mode 50Hz and 60Hz
Rejection (Simultaneously)
Common-Mode 50Hz and 60Hz
Rejection (Simultaneously)
Common-Mode Rejection
Input Leakage Current
Input Capacitance
Dynamic Input Current
LOW-BATTERY VOLTAGE MONITOR (LOWBATT)
LOWBATT TripThreshold
LOWBATT Leakage Current
Hysteresis
INTERNAL REFERENCE (INTREF BIT = 1, REF- = GND, 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 larger capacitors)
REF Input Voltage
Absolute 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
Input Capacitance
Dynamic Input Current
DD
= DV
PARAMETER
DD
= +2.7V to +5.25V, GND = 0, V
_______________________________________________________________________________________
A
= T
MIN
to T
3.5- and 4.5-Digit, Single-Chip ADCs
MAX
SYMBOL
TC
CMR
CMR
V
CMR
CMR
REF
VREF
, unless otherwise noted. Typical values are at T
REF+
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
(Note 6)
CLK
SOURCE
CLK
- V
DD
DD
REF-
= 4.915MHz
= 4.915MHz
= 5V, T
= 5V
= 0 to 300µA, I
= 2.048V (external reference). Internal clock mode, unless otherwise noted.
A
REF+
CONDITIONS
= +25°C
- V
REF-
SINK
)
SOURCE
SOURCE
= 0 to 30µA
< 10kΩ
< 10kΩ
with LCD Drivers
A
= +25°C, unless otherwise noted.)
2.007
MIN
-2.2
-20
-20
2.048
2.048
2.048
TYP
100
120
150
100
400
100
120
150
100
10
10
10
20
40
50
25
10
10
1
6
2.089
MAX
+2.2
+20
+20
ppm/°C
UNITS
mV/µA
µV
µV/V
mV
mA
dB
dB
dB
pA
dB
dB
dB
nA
pF
nA
nA
pF
nA
V
V
V
V
P-P
3