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參數(shù)資料
| 型號： | ADE7757AARZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | LEAD FREE, MS-012AC, SOIC-16 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大?。?/td> | 391K |
| 代理商： | ADE7757AARZ |
Energy Metering IC with Integrated
Oscillator and Reverse Polarity Indication
Preliminary Technical Data
ADE7757A
Rev. PrE
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
www.analog.com
Fax: 781.326.8703
2005 Analog Devices, Inc. All rights reserved.
FEATURES
On-chip oscillator as clock source
High accuracy, supports 50 Hz/60 Hz IEC62053-21
Less than 0.1% error over a dynamic range of 500 to 1
Supplies average real power on frequency outputs F1 and F2
High frequency output CF calibrates and supplies
instantaneous real power
Logic output REVP indicates potential miswiring or negative
power
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 2.45 V (20 ppm/°C typical) with external
overdrive capability
Single 5 V supply, low power (20 mW typical)
Low cost CMOS process
AC input only
GENERAL DESCRIPTION
The ADE7757A1 is a high accuracy, electrical energy metering
IC. It is a pin reduction version of the ADE7755, enhanced with
a precise oscillator circuit that serves as a clock source to the
chip. The ADE7757A eliminates the cost of an external crystal
or resonator, thus reducing the overall cost of a meter built with
this IC. The chip directly interfaces with the shunt resistor and
operates only with ac input.
1U.S. Patents 5,745,323; 5,760,617; 5,862,069; 5,872,469; others pending.
The ADE7757A specifications surpass the accuracy require-
ments as quoted in the IEC62053-21 standard. The AN-679
Application Note can be used as a basis for a description of an
IEC 61036 (equivalent to IEC62053-21) low cost, watt-hour
meter reference design.
The only analog circuitry used in the ADE7757A is in the Σ-Δ
ADCs and reference circuit. All other signal processing, such as
multiplication and filtering, is carried out in the digital domain.
This approach provides superior stability and accuracy over
time and extreme environmental conditions.
The ADE7757A supplies average real power information on the
low frequency outputs F1 and F2. These outputs may be used to
directly drive an electromechanical counter or interface with an
MCU. The high frequency CF logic output, ideal for calibration
purposes, provides instantaneous real power information.
The ADE7757A includes a power supply monitoring circuit on
the VDD supply pin. The ADE7757A remains inactive until the
supply voltage on VDD reaches approximately 4 V. If the supply
falls below 4 V, the ADE7757A also remains inactive and the F1,
F2, and CF outputs are in their nonactive modes.
Internal phase matching circuitry ensures that the voltage and
current channels are phase matched while the HPF in the
current channel eliminates dc offsets. An internal no-load
threshold ensures that the ADE7757A does not exhibit creep
when no load is present.
The part is available in a 16-lead, narrow-body, SOIC package.
FUNCTIONAL BLOCK DIAGRAM
MULTIPLIER
REVP
V2P
V2N
V1P
RCLKIN
REFIN/OUT
F1
F2
CF
SCF
S0
S1
PHASE
CORRECTION
4k
...110101...
SIGNAL
PROCESSING
BLOCK
POWER
SUPPLY MONITOR
Σ-
ADC
V1N
ADE7757A
...11011001...
2.5V
REFERENCE
VDD
AGND
DGND
Φ
INTERNAL
OSCILLATOR
Σ-
ADC
LPF
HPF
+
1
6
13
7
11
8
10
12
14
16
15
9
DIGITAL-TO-FREQUENCY
CONVERTER
2
3
4
5
05330-001
Figure 1.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADE7757ARN | 制造商:Rochester Electronics LLC 功能描述:ENERGY METER IC W/INTEGRATED OSCILLATOR - Bulk 制造商:Analog Devices 功能描述:IC ENERGY METER |
| ADE7757ARN-REF | 制造商:Analog Devices 功能描述:REF BOARD ENERGY MTR W/INTGRATED OSCIL. - Rail/Tube |
| ADE7757ARNRL | 制造商:Analog Devices 功能描述:IC ENERGY METERING 16-SOIC TR |
| ADE7757ARNZ | 功能描述:IC ENERGY METERING 1PHASE 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:* |
| ADE7757ARNZRL | 功能描述:IC ENERGY METERING 1PHASE 16SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:* |
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