ADE7761B
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
PERFORMANCE ISSUES THAT MAY AFFECT
BILLING ACCURACY
Table 3.
Parameter
Rating
The ADE7761B provides pulse outputs, CF, F1, and F2, that are
intended to be used for the billing of active energy. Pulses are
generated at these outputs in two different situations.
VDD to AGND
Analog Input Voltage to AGND
−0.3 V to +7 V
−6 V to +6 V
V
1A, V1B, V1N, V2N, V2P, MISCAL
Reference Input Voltage to AGND
Digital Input Voltage to DGND
Digital Output Voltage to DGND
Operating Temperature Range
Industrial
Storage Temperature Range
Junction Temperature
20-Lead SSOP, Power Dissipation
θJA Thermal Impedance
Lead Temperature, Soldering
Vapor Phase (60 sec)
−0.3 V to VDD + 0.3 V
−0.3 V to VDD + 0.3 V
−0.3 V to VDD + 0.3 V
Case 1
When the analog input V2P − V2N complies with the conditions
described in Figure 34, the CF, F1, and F2 frequencies are
proportional to active power and can be used to bill active energy.
−40°C to +8ꢀ°C
−6ꢀ°C to +1ꢀ0°C
1ꢀ0°C
4ꢀ0 mW
112°C/W
Case 2
When the analog input V2P − V2N does not comply with the
conditions described in Figure 34, the ADE7761B does not
measure active energy but a quantity proportional to kiloampere-
hours (kAh). This quantity is used to generate pulses on the
same CF, F1, and F2. This situation is indicated when the
FAULT pin is high.
21ꢀ°C
220°C
Infrared (1ꢀ sec)
Analog Devices, Inc., cautions users of the ADE7761B about the
following:
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
• Billing active energy in Case 1 is consistent with the under-
standing of the quantity represented by pulses on the CF, F1,
and F2 outputs (watthour).
• Billing active energy while the ADE7761B is in Case 2 must
be decided knowing that the entity measured by the ADE7761B
in this case is ampere-hour and not watthour. Users should
be aware of this limitation and decide if the ADE7761B is
appropriate for their application.
ESD CAUTION
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