MAX71020AEUIR(2012) Ver la hoja de datos (PDF) - Maxim Integrated
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MAX71020AEUIR Datasheet PDF : 37 Pages
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MAX71020
Single-Chip Electricity Meter AFE
ELECTRICAL CHARACTERISTICS (continued)
PARAMETER
CONDITIONS
MIN
TYP MAX UNITS
Temperature Measurement Equation
Temp = 0.33 x STEMP + 21.77 NC
Temperature Error (Note 2)
TA = -40NC to +85NC
TA = -20NC to +60NC
Duration of Temperature Measurement
After Setting TEMP_START
TEMP_PER
=
0
-6
+6
NC
-4.8
+4.8
15
60
ms
SUPPLY CURRENT PERFORMANCE SPECIFICATIONS
V3P3A + V3P3SYS Current (Note 2)
VV3P3A = VV3P3SYS = 3.3V, CE_E = 1,
ADC_E = 1
INTERNAL POWER-FAULT COMPARATOR SPECIFICATIONS
4.3
mA
Overall Response Time
100mV overdrive, falling
100mV overdrive, rising
20
200
µs
8
200
3.0V comparator
2.83
2.93
3.03
V
Falling Threshold
2.8V comparator
2.75
2.81
2.89
V
Difference 3.0V and 2.8V comparators
50
136
220
mV
Hysteresis (Rising Threshold - Falling 3.0V comparator, TA = +22NC
Threshold)
2.8V comparator, TA = +22NC
PLL PERFORMANCE SPECIFICATIONS
17
45
74
mV
15
42
70
PLL Power-Up Settling Time
VV3P3A = 0 to 3.3V step, measured from first edge
of MCK
75
µs
PLL_FAST Settling Time
VV3P3A = 3.3V, PLL_FAST rise
VV3P3A = 3.3V, PLL_FAST fall
PLL Lock Frequency at XOUT
VV3P3A = 3.3V, MCK frequency error < 1%
VREF PERFORMANCE SPECIFICATIONS
10
µs
10
7
9.8
13
MHz
VREF Output Voltage, VREF (22)
VREF Power-Supply Sensitivity
(DVREF/DV3P3A)
TA = +22NC
V3P3A = 3.0V to 3.6V
1.200
-1.5
1.205
1.210
+1.5
V
mV/V
VNOM Definition
VNOM(T) = VREF(22) +
TC1(T - 22) + TC2(T - 22)2
V
VNOM Temperature Coefficient TC1
VNOM Temperature Coefficient TC2
29.32 - 1.05 x TRIMT
-0.56 - 0.004 x TRIMT
µV/NC
µV/NC2
VREF(T) Deviation from VNOM(T):
VREF(T) - VNOM(T)106
VNOM(T)
62
(Note 2)
-40
+40 ppm/NC
ADC CONVERTER PERFORMANCE SPECIFICATIONS
Recommended Input Range
(With Respect to GNDA)
VA, VB, IBP, IBN
-250
+250 mV peak
3
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