71m6511h-igtr Maxim Integrated Products, Inc., 71m6511h-igtr Datasheet - Page 86

• Manufacturer Part Number: 71m6511h-igtr
• Description: Single-phase Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

VREF, VBIAS
Unless otherwise specified, VREF_DIS=0
A
CRYSTAL OSCILLATOR
Crystal is disconnected. Test load is series 200pF, 100kΩ connected between DGND and XOUT.
Page: 86 of 95
VREF
VREF
PARAMETER
VREF output voltage, VNOM(25)
VREF chop step
VREF output impedance
VNOM definition
VREF temperature coefficients
TRIMBGA, TRIMBGB, TRIMM[2:0]: See
TRIMSEL, TRIM registers
VREF(T) deviation from VNOM(T)
VREF temperature coefficients
VREF(T) deviation from VNOM(T)
VREF aging
VBIAS output voltage
VBIAS output impedance
PARAMETER
Maximum Output Power to Crystal
XIN to XOUT Capacitance
Capacitance to DGND
Watchdog RTC_OK threshold
This relationship describes the nominal behavior of VREF at different temperatures.
XIN
XOUT
TC1 (linear)
TC2 (quadratic)
TC1 (linear)
TC2 (quadratic)
(
(
T
T
VNOM
VNOM
)
)
−
−
VNOM
VNOM
A
(
(
T
T
)
)
1
max(|
max(|
1
T
T
10
10
−
−
-- If TRIMBGA and TRIMBGB not available (6511) --
6
6
-- If TRIMBGA and TRIMBGB available (6511H) --
22
22
4
|,
|,
40
40
© 2005-2007 TERIDIAN Semiconductor Corporation
)
)
Ta = 22ºC
VREF_CAL = 1,
I
VNOM(T) = VREF(22) + (T–22)TC1 + (T–22)
Ta = -40ºC to +85ºC
Ta = 25ºC
Ta = 25ºC
Ta = -40ºC to 85ºC
I
Crystal connected
LOAD
LOAD
where x = 0.1TRIMBGB - 0.14(TRIMM[2:0]+0.5),
= 10µA, -10µA
= 1mA, -1mA
CONDITION
CONDITION
y
=
TEMP
. 4
7404
x(33-0.28y) + 0.33y + 7.9
_
x(0.02-0.0002y) – 0.46
NOM
Single-Phase Energy Meter IC
−
500
900
TRIM
1.193
(-1%)
(-2%)
MIN
MIN
71M6511/71M6511H
-10
-40
_
DATA SHEET
BGA
-0.341
1.195
TYP
TYP
7.0
±25
240
−
1.5
1.5
370000
2
TC2
(+1%)
(+2%)
1.197
MAX
+40
500
MAX
2.5
40
10
25
1
3
5
5
ppm/ºC
ppm/ºC
µV/°C
µV/°C
µV/°C
µV/ºC
UNIT
ppm/
year
UNIT
mV
kΩ
kHz
µW
Ω
V
V
V
V
pF
pF
pF
AUGUST 2007
2
2
V2.6