MAX71020(2012) 查看數據表（PDF） - Maxim Integrated
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MAX71020 Datasheet PDF : 37 Pages
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MAX71020
Single-Chip Electricity Meter AFE
ELECTRICAL CHARACTERISTICS (continued)
PARAMETER
CONDITIONS
MIN
TYP MAX
Phase Shift
(Note 2)
(VIN
=
28mV
Differential) TA = +25NC, VV3P3A = 3.3V
0
8
Preamplifier Input Current (IADC0)
Preamplifier Input Current (IADC1)
PRE_E = 1, DIFF0_E = 1,
IADC0 = IADC1 = V3P3A
9
Preamplifier and ADC Total Harmonic TA = +25NC; VV3P3A = 3.3V, PRE_E = 1,
(VIN = 28mV Differential)
DIFF0_E = 1
15
20
-80
Preamplifier and ADC Total Harmonic TA = +25NC; VV3P3A = 3.3V, PRE_E = 1,
Distortion (VIN = 15mV Differential)
DIFF0_E = 1
-85
SPI SLAVE TIMING SPECIFICATIONS
SPI Setup Time
SPI_DI to SPI_CK rise
10
SPI Hold Time
SPI_CLK rise to SPI_DI
10
SPI Output Delay
SPI_CLK fall to SPI_D0
40
SPI Recovery Time
SPI_CSZ fall to SPI_CLK
10
SPI Removal Time
SPI_CLK to SPI_CSZ rise
15
SPI Clock High
40
SPI Clock Low
40
SPI Clock Frequency
10
SPI Transaction Space
(SPI_CSZ Rise to SPI_CSZ Fall)
1
RESETZ TIMING
Following power-on
1
Reset Pulse Width
At all other times
5
Reset Pulse Rise Time (Note 2)
1
VOLTAGE MONITOR
Nominal value at +22NC (VNOM)
VV3P3A = 3.3V
130
Voltage Measurement Equation
VV3P3(CALC) = 3.29V +
(BSENSE – 130) x 0.025V +
STEMP x 242µV
UNITS
mN
FA
dB
dB
ns
ns
ns
ns
ns
ns
ns
MHz
Fs
ms
Fs
Fs
LSB
Voltage Error
100
×
VV3P3(CALC)
VV3P3
-
1
-4
+4
%
Note 2: Guaranteed by design, not production tested.
Note 3: V3P3SYS and V3P3A must be connected together.
Note 4: AGND and DGND must be connected together.
5
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