MAX71020AEUI+R datasheet(3/37 Pages) MAXIM

Part #	MAX71020AEUI+R

Description	Single-Chip Electricity Meter AFE

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Manufacturer	MAXIM [Maxim Integrated Products]

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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

N

C

Temperature Error (Note 2)

TA = -40NC to +85NC

-6

+6

N

C

TA = -20NC to +60NC

-4.8

+4.8

Duration of Temperature Measurement

After Setting TEMP_START

TEMP_PER = 0

15

60

ms

SUPPLY CURRENT PERFORMANCE SPECIFICATIONS

V3P3A + V3P3SYS Current (Note 2)

VV3P3A = VV3P3SYS = 3.3V, CE_E = 1,

ADC_E = 1

4.3

mA

INTERNAL POWER-FAULT COMPARATOR SPECIFICATIONS

Overall Response Time

100mV overdrive, falling

20

200

µs

100mV overdrive, rising

8

200

Falling Threshold

3.0V comparator

2.83

2.93

3.03

V

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

Threshold)

3.0V comparator, TA = +22NC

17

45

74

mV

2.8V comparator, TA = +22NC

15

42

70

PLL PERFORMANCE SPECIFICATIONS

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

10

µs

VV3P3A = 3.3V, PLL_FAST fall

10

PLL Lock Frequency at XOUT

VV3P3A = 3.3V, MCK frequency error < 1%

7

9.8

13

MHz

VREF PERFORMANCE SPECIFICATIONS

VREF Output Voltage, VREF (22)

TA = +22NC

1.200

1.205

1.210

V

VREF Power-Supply Sensitivity

(DVREF/DV3P3A)

V3P3A = 3.0V to 3.6V

-1.5

+1.5

mV/V

VNOM Definition

VNOM(T) = VREF(22) +

TC1(T - 22) + TC2(T - 22)2

V

VNOM Temperature Coefficient TC1

29.32 - 1.05 x TRIMT

µV/NC

VNOM Temperature Coefficient TC2

-0.56 - 0.004 x TRIMT

µV/NC2

VREF(T) Deviation from VNOM(T):

(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

6

VREF(T) - VNOM(T)10

VNOM(T)

62

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MAX71020AEUI+R Datasheet(PDF) 3 Page - Maxim Integrated Products

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