Datasheet

71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
SEPTEMBER 2011
© 2005-2011 Teridian Semiconductor Corporation Page: 83 of 104
A Maxim Integrated Products Brand
Figure 31: Error Band for VREF over Temperature (Regular-Accuracy Parts)
Figure 32: Error Band for VREF over Temperature (High-Accuracy Parts)
Crystal Oscillator
The oscillator drives a standard 32.768 kHz watch crystal. The oscillator has been designed specifically to handle these
crystals and is compatible with their high impedance and limited power handling capability. The oscillator power dissipation is
very low to maximize the lifetime of any battery backup device attached to VBAT.
Board layouts with minimum capacitance from XIN to XOUT will require less battery current. Good layouts will have XIN and
XOUT shielded from each other.
-2800
-2400
-2000
-1600
-1200
-800
-400
0
400
800
1200
1600
2000
2400
2800
-40 -20 0 20 40 60 80
Error Band (PPM) over Temperature (°C)
±40 PPM/°C
±40 PPM/°C
-1000
-800
-600
-400
-200
0
200
400
600
800
1000
-40 -20 0 20 40 60 80
Error Band (PPM) over Temperature (°C)
-10 PPM/°C
+10 PPM/°C