71m6521be Maxim Integrated Products, Inc., 71m6521be Datasheet - Page 87

• Manufacturer Part Number: 71m6521be
• Description: Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

LOW POWER VOLTAGE REGULATOR
Unless otherwise specified, V3P3SYS=V3P3A=0, PB=GND (BROWNOUT)
CRYSTAL OSCILLATOR
VREF, VBIAS
Unless otherwise specified, VREF_DIS=0
A
V1.0
VREF
PARAMETER
V2P5
V2P5 load regulation
VBAT voltage requirement
PSRR ΔV2P5/ΔVBAT
PARAMETER
Maximum Output Power to Crystal
XIN to XOUT Capacitance
Capacitance to DGND
PARAMETER
VREF output voltage, VNOM(25)
VREF chop step
VREF output impedance
VNOM definition
VREF temperature coefficients
VREF aging
VREF(T) deviation from VNOM(T)
VBIAS voltage
This relationship describes the nominal behavior of VREF at different temperatures.
XIN
XOUT
TC1
TC2
(
T
VNOM
)
−
VNOM
A
(
T
)
10
62
6
© 2005-2008 TERIDIAN Semiconductor Corporation
I
I
I
Reduce VBAT until
REG_LP_OK=0
I
Crystal connected
Ta = 22ºC
VREF_CAL
I
Ta = -40ºC to +85ºC
Ta = 25ºC
Ta = -40ºC to 85ºC
VNOM
LOAD
LOAD
LOAD
LOAD
LOAD
=0
=0mA to 1mA
=1mA,
=0
= 10µA, -10µA
CONDITION
CONDITION
CONDITION
(
T
)
=
=1,
VREF
(
22
)
+
(
T
−
22
1.193
(-1%)
(-4%)
MIN
MIN
MIN
2.0
-50
-40
)
TC
1
+
(
Energy Meter IC
T
-0.341
1.195
+7.0
TYP
TYP
TYP
±25
−
2.5
1.6
1.6
22
)
2
TC
71M6521BE
(+1%)
(+4%)
1.197
MAX
2
MAX
MAX
+40
DATA SHEET
2.5
50
2.7
3.0
30
50
1
3
5
5
ppm/year
ppm/ºC
µV/°C
µV/ºC
UNIT
mV/V
UNIT
UNIT
JANUARY 2008
mV
kΩ
mV
μW
pF
pF
pF
V
V
V
V
V
V
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