ADE7880ACPZ-RL(RevA) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADE7880ACPZ-RL
(Rev.:RevA)

Polyphase Multifunction Energy Metering IC with Harmonic Monitoring

Analog Devices 

Data Sheet

ADE7880

SILICON ANOMALY

This anomaly list describes the known issues with the ADE7880 silicon identified by the Version register (Address 0xE707) being equal to 1.

Analog Devices, Inc., is committed, through future silicon revisions, to continuously improve silicon functionality. Analog Devices tries

to ensure that these future silicon revisions remain compatible with your present software/systems by implementing the recommended

workarounds outlined here.

ADE7880 FUNCTIONALITY ISSUES

Silicon Revision

Identifier

Chip Marking

Version = 1

ADE7880ACPZ

Silicon Status

Preliminary

Anomaly Sheet

Rev. A

No. of Reported Issues

4 (er001, er002, er003, er004)

FUNCTIONALITY ISSUES

Table 26. LAST_ADD Register Shows Wrong Value for Harmonic Calculations Registers in SPI Mode [er001, Version = 1 Silicon]

Background When any ADE7880 register is read using SPI or I2C communication, the address is stored in the LAST_ADD register

Issue

When the harmonic calculation registers located between Address 0xE880 and Address 0xE89F are read using SPI

communication, the LAST_ADD register contains the address of the register incremented by 1. The issue is not present if

the I2C communication is used.

Workaround If the LAST_ADD register is read after one of the registers located between Address 0xE880 and Address 0xE89F was read

using SPI communication, subtract 1 from it to recover the right address.

Related Issues None.

Table 27. To Obtain Best Accuracy Performance, Internal Setting Must Be Changed [er002, Version = 1 Silicon]

Background Internal default settings provide best accuracy performance for ADE7880.

Issue

It was found that if a different setting is used, the accuracy performance can be improved.

Workaround To enable a new setting for this internal register, execute three consecutive write operations:

The first write operation is to an 8-bit location: 0xAD is written to Address 0xE7FE.

The second write operation is to a 16-bit location: 0x3BD is written to Address 0xE90C.

The third write operation is to an 8-bit location: 0x00 is written to Address 0xE7EF.

The write operations must be executed consecutively without any other read/write operation in between. As a

verification that the value was captured correctly, a simple 16-bit read of Address 0xE90C should show the 0x3BD value.

Related Issues None.

Table 28. High-Pass Filter Cannot be Disabled in Phase C Voltage Data Path [er003, Version = 1 Silicon]

Background

When Bit 0 (HPFEN) of the CONFIG3 register is 0, all high-pass filters (HPF) in the phase and neutral currents and phase

voltages data paths are disabled (see the ADE7880 data sheet for more information about the current channel HPF and

the voltage channel HPF).

Issue

The HPF in the Phase C voltage data path remains enabled independent of the state of Bit HPFEN.

Workaround There is no workaround.

Related Issues None.

Rev. A | Page 81 of 104

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