71M6521DE-IM/F Maxim Integrated Products, 71M6521DE-IM/F Datasheet - Page 93
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71M6521DE-IM/F
Manufacturer Part Number
71M6521DE-IM/F
Description
IC ENERGY METER 16K FLASH 68-QFN
Manufacturer
Maxim Integrated Products
Specifications of 71M6521DE-IM/F
Mounting Style
SMD/SMT
Package / Case
QFN-68
Program Memory Size
16 KB
Program Memory Type
Flash
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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71M6521DE/DH/FE Data Sheet
CRYSTAL OSCILLATOR
VREF, VBIAS
Unless otherwise specified, VREF_DIS=0
1
2
Rev 2
VREF
Guaranteed by design; not production tested.
This relationship describes the nominal behavior of VREF at different temperatures.
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(T) deviation from VNOM(T)
Define the following variables:
VNOM temperature coefficients
(Δv and ΔT are defined in the
section entitled “Voltage Refer-
ence”)
VREF(T) deviation from VNOM(T)
VREF aging
VBIAS voltage
VREF
XIN
XOUT
TC1
TC2
VNOM
(
T
VNOM
22,1
22,0
(
T
)
−
TC1
TC2
)
−
VNOM
≡ __/2
=
VNOM
(
T
(
T
)
2.3704
)
2
(
22,1
T
(
T
)
)
max(
--this calculates the value of TEMP
max(
-- If TRIMBGA and TRIMBGB are available (71M6521DH) --
T
10
T
−
10
6
−
22
10
-- If TRIMBGA and TRIMBGB not available --
6
= 0.1 ∙ − 0.143 ∙ ( + 0.5 )
=
22
,
40
--
,
40
where TEMP_RAW_X is measured with FIRLEN=1
)
)
Ta = 22ºC
VREF_CAL =1,
I
Ta = -40ºC to +85ºC
VNOM
LOAD
Ta = -40ºC to +85ºC
Ta = 25ºC
Ta = -40ºC to 85ºC
= ( 56.2 − ) ∙ 0.55
22,0
Crystal connected
CONDITION
= 10 µA, -10 µA
− ( 500 ∙ + 370000 )
(
T
+ 19 − 0.065 + 0.34 + 8.0
)
CONDITION
=
VREF
0.015 − 0.0013 − 0.35
900
22
(
22
if measured with FIRLEN=0
)
+
(
T
(-4%)
1.193
(-1%)
MIN
-40
−
-20
22
-0.341
1
1
+7.0
)
1
TC
MIN
1
1.195
1.6
±25
TYP
+
1.6
(
T
1
−
22
(+4%)
+40
(+1%)
TYP
)
+20
1.197
MAX
2
3
5
5
2.5
50
TC
1
1
1
2
µV/°C
µV/ºC
MAX
1
ppm/ year
ppm/ºC
μV/ºC
ppm/ºC
μV/ºC
2
UNIT
mV
kΩ
V
V
V
V
UNIT
2
Page: 93 of 107
μW
pF
pF
pF
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