71M6515H
A Maxim Integrated Products Brand
Energy Meter IC
DATA SHEET
JULY 2011
Temperature Coefficient of Input
Impedance
Vin=65Hz
1.7
Ω/°C
LSB size
355
+884736
nV/LSB
LSB
Digital Full Scale
ADC Gain Error vs.
%Power Supply Variation
Vin=200mV pk, 65Hz
V3P3A=3.0V, 3.6V
PPM/
%
106 ∆NoutPK 357nV /VIN
50
100∆V3P3A/3.3
Input Offset (Vin-V3P3A)
1 Guaranteed by design; not production tested.
-10
+10
mV
RECOMMENDED EXTERNAL COMPONENTS
NAME
C1
C2
FROM
V3P3A
V3P3D
TO
AGND
DGND
FUNCTION
Bypass capacitor for 3.3V supply
Bypass capacitor for 3.3V supply
32.768kHz crystal – electrically similar to
ECS .327-12.5-17X or Vishay XT26T, load
capacitance 12.5pF
VALUE
≥0.1±20%
≥0.1±20%
UNIT
µF
µF
XTAL
XIN
XOUT
32.768
kHz
CXS
CXL
C2P5
XIN
XOUT
V2P5
AGND
AGND
DGND
pF
pF
µF
27±10%
27±10%
≥0.1±20%
Load capacitor for crystal (depends on crystal
specs and board parasitics).
Bypass capacitor for V2P5
FOOTNOTES:
1 This spec is guaranteed, has been verified in production samples, but is not measured in production.
2 This spec is guaranteed, has been verified in production samples, but is measured in production only at DC.
3 This spec is measured in production at the limits of the specified operating temperature.
4 This spec defines a nominal relationship rather than a measured parameter. Correct circuit operation is verified with other specs that use
this nominal relationship as a reference
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