MAX1492 Datasheet, PDF (3/35 Pages) Maxim Integrated Products – 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers

3.5- and 4.5-Digit, Single-Chip ADCs
with LCD Drivers
ELECTRICAL CHARACTERISTICS (continued)
(AV_DD = DV_DD = +2.7V to +5.25V, GND = 0, V_REF+ - V_REF- = 2.048V (external reference). Internal clock mode, unless otherwise noted.
All specifications are at T_A = T_MIN to T_MAX, unless otherwise noted. Typical values are at T_A = +25°C, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP
Normal-Mode 50Hz and 60Hz
Rejection (Simultaneously)
Internal clock mode, 50Hz and 60Hz ±2%
100
External clock mode, 50Hz and 60Hz ±2%,
120
f_CLK = 4.915MHz
Common-Mode 50Hz and 60Hz
Rejection (Simultaneously)
CMR For 50Hz and 60Hz ±2%, R_SOURCE < 10kΩ
150
Common-Mode Rejection
CMR At DC
100
Input Leakage Current
10
Input Capacitance
Dynamic Input Current
(Note 6)
LOW-BATTERY VOLTAGE MONITOR (LOWBATT)
LOWBATT TripThreshold
10
-20
2.048
LOWBATT Leakage Current
10
Hysteresis
20
INTERNAL REFERENCE (INTREF BIT = 1, REF- = GND, bypass REF+ to GND with a 4.7µF capacitor)
REF Output Voltage
V_REF AV_DD = 5V, T_A = +25°C
2.007 2.048
REF Output Short-Circuit Current
1
REF Output Temperature
Coefficient
TC_VREF AV_DD = 5V
40
Load Regulation
Line Regulation
I_SOURCE = 0 to 300µA, I_SINK = 0 to 30µA
6
50
0.1Hz to 10Hz
25
Noise Voltage
10Hz to 10kHz
400
EXTERNAL REFERENCE (INTREF BIT = 0, bypass REF+ and REF- to GND with 0.1µF or larger capacitors)
REF Input Voltage
Differential (V_REF+ - V_REF-)
2.048
Absolute REF Input Voltage to
GND
-2.2
Normal-Mode 50Hz and 60Hz
Rejection (Simultaneously)
Internal clock mode, 50Hz and 60Hz ±2%
100
External clock mode, 50Hz and 60Hz ±2%,
120
f_CLK = 4.915MHz
Common-Mode 50Hz and 60Hz
Rejection (Simultaneously)
CMR For 50Hz and 60Hz ±2%, R_SOURCE < 10kΩ
150
Common-Mode Rejection
Input Leakage Current
Input Capacitance
Dynamic Input Current
CMR At DC
(Note 6)
100
10
10
-20
MAX
+20
2.089
+2.2
+20
UNITS
dB
dB
dB
nA
pF
nA
V
pA
mV
V
mA
ppm/°C
mV/µA
µV/V
µV_P-P
V
V
dB
dB
dB
nA
pF
nA
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