ADE7761A

Rev. 0 | Page 5 of 24

ABSOLUTE MAXIMUM RATINGS

Table 3.

Parameter

Rating

−0.3 V to +7 V

Analog Input Voltage to AGND

−6 V to +6 V

Reference Input Voltage to AGND

Digital Input Voltage to DGND

Digital Output Voltage to DGND

Operating Temperature Range

Industrial

−40°C to +85°C

Storage Temperature Range

−65°C to +150°C

Junction Temperature

150°C

20-Lead SSOP, Power Dissipation

450 mW

112°C/W

Lead Temperature, Soldering

Vapor Phase (60 sec)

215°C

Infrared (15 sec)

220°C

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 listed in the operational sections

of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect

device reliability.

PERFORMANCE ISSUES THAT MAY AFFECT

BILLING ACCURACY

The ADE7761A provides pulse outputs—CF, F1, and F2—

intended to be used for the billing of active energy. Pulses

are generated at these outputs in two different situations.

Case 1

conditions described in Figure 34, CF, F1, and F2 frequencies

are proportional to active power and can be used to bill

active energy.

Case 2

the conditions described in Figure 34, the ADE7761A does not

measure active energy but a quantity proportional to 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.

Analog Devices, Inc. cautions users of the ADE7761A about the

following:

• Billing active energy in Case 1 is consistent with the

understanding of the quantity represented by pulses on CF,

F1, and F2 outputs (watt-hour).

• Billing active energy while the ADE7761A is in Case 2 must

be decided knowing that the entity measured by the

ADE7761A in this case is ampere-hour and not watt-hour.

Users should be aware of this limitation and decide if the

ADE7761A is appropriate for their application.

ESD CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on

the human body and test equipment and can discharge without detection. Although this product features

proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy

electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance

degradation or loss of functionality.