參數(shù)資料
型號(hào)： ADE7762ARW
廠商： ANALOG DEVICES INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： Polyphase Energy Metering IC with Phase Drop Indication
中文描述： SPECIALTY ANALOG CIRCUIT, PDSO28
封裝： MS-013AE, SOIC-28
文件頁(yè)數(shù)： 1/28頁(yè)
文件大?。?/td> 363K
代理商： ADE7762ARW
Polyphase Energy Metering IC with Phase
Drop Indication
ADE7762
Preliminary Technical Data
FEATURES
High accuracy supports 50 Hz/60 Hz IEC62053-21
Less than 0.1% error over a dynamic range of 500 to 1
Compatible with 3-phase 3-wire delta and 3-phase 4-wire Wye
configurations
Supplies average active power on the frequency outputs F1 and F2
High frequency output (CF) is intended for calibration and
supplies instantaneous active power
Logic output REVP indicates a potential miswiring or negative
power on the sum of all phases
Dropout indication for each phase on LED driver pins
Phase sequence error detection
Direct drive for electromechanical counters and 2-phase stepper
motors (F1 and F2)
Proprietary ADCs and DSP provide high accuracy over large
variations in environmental conditions and time
On-chip power supply monitoring
On-chip creep protection (no load threshold)
On-chip reference 2.4 V ± 8% (25 ppm/°C typical) with external
overdrive capability
Single 5 V supply, low power (TBD mW typical)
Low cost CMOS process
GENERAL DESCRIPTION
The ADE7762
1
is a high accuracy polyphase electrical energy
measurement IC. The ADE7762 specifications surpass the
accuracy requirements as quoted in the IEC62053-21 standard.
Rev. PrB
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
200
6
Analog Devices, Inc. All rights reserved.
www.analog.com
1
Patent pending.
The only analog circuitry used in the ADE7762 is in the
analog-to-digital converters (ADCs) and reference circuit. All
other signal processing (for example, multiplication, filtering,
and summation) is carried out in the digital domain. This
approach provides superior stability and accuracy over
extremes in environmental conditions and over time.
The ADE7762 supplies average active power information on the
low frequency outputs, F1 and F2. These logic outputs can be
used to directly drive an electromechanical counter or to inter-
face with an MCU. The CF logic output gives instantaneous
active power information. This output is intended to be used for
calibration purposes.
The ADE7762 includes a power supply monitoring circuit on the
V
DD
pin. The ADE7762 remains inactive until the supply voltage
on V
DD
reaches 4 V. If the supply falls below 4 V, the ADE7762
also resets and no pulses are issued on F1, F2, and CF.
A multiple multiplexed logic output provides phase dropout per
phase, reverse polarity per phase, and a phase sequence error.
Internal phase matching circuitry ensures that the voltage and
current channels are phase matched. An internal no load
threshold ensures the ADE7762 does not exhibit any creep
when there is no load.
The ADE7762 is available in a 28-lead SOIC package.
FUNCTIONAL BLOCK DIAGRAM
19
5
4
21
22
3
26
F1
25
F2
24
S1
23
S0
20
6
27
28
2
1
14
13
LPF
HPF
Φ
CLKOUT
CLKIN
DGND
CF
SCF
REVP
LED_C
LED_B
Figure 1.
LED_A
LED_CTRL
DIGITAL-TO-FREQUENCY CONVERTER
2.4V REF
REF
IN/OUT
AGND
4k
Ω
IBP
IBN
VBP
VN
ICP
ICN
VCP
IAP
IAN
VAP
ADC
ADC
ADC
ADC
V
DD
ADE7762
POWER
SUPPLY
MONITOR
ADC
ADC
HPF
Φ
HPF
Φ
LPF
LPF
PHASE AND REVP MONITOR
Σ
X
X
X
0
ABS
15
12
11
17
10
9
18
8
7
16
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