- 您現(xiàn)在的位置：買賣IC網 > PDF目錄373916 > AD7755ABRS (ANALOG DEVICES INC) Energy Metering IC with Pulse Output PDF資料下載
參數(shù)資料
| 型號： | AD7755ABRS |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | Energy Metering IC with Pulse Output |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | SSOP-24 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 250K |
| 代理商： | AD7755ABRS |
REV. B
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
AD7755
*
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 2000
Energy Metering IC
with Pulse Output
FUNCTIONAL BLOCK DIAGRAM
MULTIPLIER
AC/
DC
CLKOUT
V1P
V1N
G0
V2P
G1
AV
DD
DV
DD
HPF
CLKIN
REF
IN/OUT
F1
F2
CF
REVP
SCF
S0
S1
RESET
AGND
DGND
PHASE
CORRECTION
4k
...
110101
...
SIGNAL
PROCESSING
BLOCK
ADC
PGA
x1, x2, x8, x16
SUPPOWER
ADC
V2N
AD7755
...
11011001
...
LPF
2.5V
REFERENCE
DIGITAL-TO-FREQUENCY
CONVERTER
FEATURES
High Accuracy, Supports 50 Hz/60 Hz IEC 687/1036
Less than 0.1% Error Over a Dynamic Range of
500 to 1
The AD7755 Supplies Average Real Power on the
Frequency Outputs F1 and F2
The High Frequency Output CF Is Intended for
Calibration and Supplies Instantaneous Real Power
The Logic Output REVP Can Be Used to Indicate a
Potential Miswiring or Negative Power
Direct Drive for Electromechanical Counters and
Two Phase Stepper Motors (F1 and F2)
A PGA in the Current Channel Allows the Use of Small
Values of Shunt and Burden Resistance
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 2.5 V 6 8% (30 ppm/8C Typical)
with External Overdrive Capability
Single 5 V Supply, Low Power (15 mW Typical)
Low Cost CMOS Process
GENERAL DESCRIPTION
The AD7755 is a high accuracy electrical energy measurement
IC. The part specifications surpass the accuracy requirements
as quoted in the IEC1036 standard. See Analog Devices’
Application Note AN-559 for a description of an IEC1036
watt-hour meter reference design.
The only analog circuitry used in the AD7755 is in the ADCs
and reference circuit. All other signal processing (e.g., multipli-
cation and filtering) is carried out in the digital domain. This
approach provides superior stability and accuracy over extremes
in environmental conditions and over time.
The AD7755 supplies average real power information on the
low frequency outputs F1 and F2. These logic outputs may be
used to directly drive an electromechanical counter or interface
to an MCU. The CF logic output gives instantaneous real power
information. This output is intended to be used for calibration
purposes, or interfacing to an MCU.
The AD7755 includes a power supply monitoring circuit on the
AV
DD
supply pin. The AD7755 will remain in a reset condition
until the supply voltage on AV
DD
reaches 4 V. If the supply falls
below 4 V, the AD7755 will also be reset and no pulses will be
issued on F1, F2 and CF.
Internal phase matching circuitry ensures that the voltage and
current channels are phase matched whether the HPF in Chan-
nel 1 is on or off. An internal no-load threshold ensures that the
AD7755 does not exhibit any creep when there is no load.
The AD7755 is available in 24-lead DIP and SSOP packages.
*
U.S. Patents 5,745,323, 5,760,617, 5,862,069, 5,872,469.
相關PDF資料 |
PDF描述 |
|---|---|
| AD7755AAN | Energy Metering IC with Pulse Output |
| AD7760 | 2.5 MSPS, 20-Bit ADC |
| AD7760BCP | 2.5 MSPS, 20-Bit ADC |
| AD7760BSV | 2.5 MSPS, 20-Bit ADC |
| AD7769 | LC2MOS Analog I/O Port |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD7755AN | 制造商:Rochester Electronics LLC 功能描述:ENERGY METERING IC WITH P - Bulk |
| AD7755ARS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD7756AN | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD7756ARS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD775JN | 制造商:Analog Devices 功能描述:ADC SGL PIPELINED 20MSPS 8BIT PARALLEL 24PDIP - Bulk 制造商:Rochester Electronics LLC 功能描述:8-BIT 20 MSPS, 60 MW SAMPLING A/D CONVERTER - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復。