71M6521DE Datasheet, PDF (90/101 Pages) Teridian Semiconductor Corporation – Energy Meter IC

71M6521DE/71M6521FE
Energy Meter IC
DATASHEET
JANUARY 2008
CRYSTAL OSCILLATOR
PARAMETER
Maximum Output Power to Crystal
XIN to XOUT Capacitance
Capacitance to DGND
XIN
XOUT
CONDITION
Crystal connected
MIN
TYP
MAX
1
3
5
5
VREF, VBIAS
Unless otherwise specified, VREF_DIS=0
PARAMETER
VREF output voltage, VNOM(25)
VREF chop step
VREF output impedance
VNOM definition^A
VREF temperature coefficients
TC1
TC2
CONDITION
MIN
TYP MAX
Ta = 22ºC
1.193 1.195 1.197
50
VREF_CAL =1,
ILOAD = 10µA, -10µA
2.5
VNOM(T ) = VREF(22) + (T − 22)TC1+ (T − 22)² TC2
+7.0
-0.341
VREF aging
±25
VREF(T) deviation from VNOM(T)
VREF(T ) − VNOM(T ) 10⁶
Ta = -40ºC to +85ºC
-40
VNOM
62
VBIAS voltage
Ta = 25ºC
Ta = -40ºC to 85ºC
(-1%)
1.6
(-4%)
1.6
A _{This relationship describes the nominal behavior of VREF at different temperatures.}
+40
(+1%)
(+4%)
UNIT
μW
pF
pF
pF
UNIT
V
mV
kΩ
V
µV/ºC
µV/°C²
ppm/
year
ppm/ºC
V
V
LCD DRIVERS
Applies to all COM and SEG pins.
PARAMETER
VLC2 Max Voltage
CONDITION
MIN
With respect to VLCD
-0.1
VLC1 Voltage,
1/3 bias
½ bias
VLC0 Voltage,
1/3 bias
½ bias
With respect to 2*VLC2/3
-4
With respect to VLC2/2
-3
With respect to VLC2/3
-3
With respect to VLC2/2
-3
VLCD is V3P3SYS in MISSION mode and VBAT in BROWNOUT and LCD modes.
TYP MAX
0+.1
0
+2
+2
+2
UNIT
V
%
%
%
%
Page: 90 of 101
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