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71M6534 Datasheet(PDF) 71 Page - Maxim Integrated Products

Part No. 71M6534
Description  Exceeds IEC 62053/ANSI C12.20 Standards
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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71M6534 Datasheet(HTML) 71 Page - Maxim Integrated Products

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FDS_6533_6534_004
71M6533/G/H and 71M6534/H Data Sheet
Rev 2
71
Figure 34: Error Band for VREF over Temperature (Regular-Accuracy Parts)
Figure 35: Error Band for VREF over Temperature (High-Accuracy Parts)
4.1.1 Temperature Compensation for VREF
The bandgap temperature is used to digitally compensate the power outputs for the temperature dependence
of VREF, using the CE register GAIN_ADJ (internal temperature compensation). Since the band gap amplifier
is chopper-stabilized via the CHOP_E[1:0] field, the most significant long-term drift mechanism in the voltage
reference is removed.
In internal temperature compensation mode, the CE applies the following formula to determine the GAIN_ADJ
value. In this formula TEMP_X is the deviation from nominal or calibration temperature expressed in multiples
of 0.1 °C:
23
2
14
2
2
_
2
_
16385
_
PPMC
X
TEMP
PPMC
X
TEMP
ADJ
GAIN
+
+
=
-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
-1200
-800
-400
0
400
800
1200
-40
-20
0
20
40
60
80
Error Band (PPM) over Temperature (°C)
±15 PPM/°C
±15 PPM/°C


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