ADE7754AR datasheet(4/44 Pages) AD

部件名	ADE7754AR

功能描述	Poly-phase Multi-Function Energy Metering IC with Serial Port

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制造商	AD [Analog Devices]

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REV. PrG 01/03

PRELIMINARY TECHNICAL DATA

ADE7754

– 4 –

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

the ADE7754 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.

WARNING!

ESD SENSITIVE DEVICE

ABSOLUTE MAXIMUM RATINGS*

(TA = +25°C unless otherwise noted)

AVDD to AGND . . . . . . . . . . . . . . . . . . . . . –0.3V to +7V

DVDD to DGND . . . . . . . . . . . . . . . . . . . . –0.3V to +7V

DVDD to AVDD . . . . . . . . . . . . . . . . . . . . . –0.3V to +0.3V

Analog Input Voltage to AGND

IAP,IAN,IBP,IBN,ICP,ICN,VAP,VBP,VCP,VN . –6V to +6V

Reference Input Voltage to AGND –0.3V to AVDD+0.3V

Digital Input Voltage to DGND .

–0.3V to DVDD+0.3V

Digital Output Voltage to DGND –0.3V to DVDD+0.3V

Operating Temperature Range

Industrial . . . . . . . . . . . . . . . . . . . . . . .

–40°C to +85°C

Storage Temperature Range . . . . . . . . –65°C to +150°C

Junction Temperature . . . . . . . . . . . . . . . . . . . . . .

+150°C

24-Lead SOIC, Power Dissipation . . . . . . . . .

TBD mW

θ

JA Thermal Impedance . . . . . . . . . . . . . . . . . . .

53°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.

Terminology

MEASUREMENT ERROR

The error associated with the energy measurement made by

the ADE7754 is defined by the following formula:

Percentage Error

Energy registered by ADE

True Energy

True En

=

−

7754

eergy

×









100%

PHASE ERROR BETWEEN CHANNELS

The HPF (High Pass Filter) in the current channel has a

phase lead response. To offset this phase response and

equalize the phase response between channels a phase correc-

tion network is also placed in the current channel. The phase

correction network ensures a phase match between the

current channels and voltage channels to within ±0.1° over a

range of 45Hz to 65Hz and ±0.2° over a range 40Hz to 1kHz.

This phase mismatch between the voltage and the current

channels can be further reduced with the phase calibration

register in each phase.

POWER SUPPLY REJECTION

This quantifies the ADE7754 measurement error as a per-

centage of reading when the power supplies are varied.

For the AC PSR measurement a reading at nominal supplies

(5V) is taken. A second reading is obtained with the same

input signal levels when an ac (175mVrms/100Hz) signal is

introduced onto the supplies. Any error introduced by this ac

signal is expressed as a percentage of reading—see Measure-

ment Error definition above.

For the DC PSR measurement a reading at nominal supplies

(5V) is taken. A second reading is obtained with the same

input signal levels when the power supplies are varied ±5%.

Any error introduced is again expressed as a percentage of

reading.

ADC OFFSET ERROR

This refers to the DC offset associated with the analog inputs

to the ADCs. It means that with the analog inputs connected

to AGND the ADCs still see a dc analog input signal. The

magnitude of the offset depends on the gain and input range

selection - see characteristic curves. However, when HPFs

are switched on the offset is removed from the current

channels and the power calculation is not affected by this

offset.

GAIN ERROR

The gain error in the ADE7754 ADCs, is defined as the

difference between the measured ADC output code (minus

the offset) and the ideal output code - see Current Channel ADC

& Voltage Channel ADC. The difference is expressed as a

percentage of the ideal code.

GAIN ERROR MATCH

The Gain Error Match is defined as the gain error (minus the

offset) obtained when switching between a gain of 1, 2 or 4.

It is expressed as a percentage of the output ADC code

obtained under a gain of 1.

类似零件编号 - ADE7754AR

制造商	部件名	数据表	功能描述
Analog Devices	ADE7754AR	2Mb / 44P	ADE7754
Analog Devices	ADE7754ARRL	2Mb / 44P	ADE7754

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