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參數(shù)資料
| 型號： | AT73C502 |
| 廠商： | ATMEL CORP |
| 元件分類： | ADC |
| 英文描述： | Chip Set Solution for Watt-Hour Meters |
| 中文描述： | 6-CH 16-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQFP44 |
| 封裝： | 10 X 10 MM, QFP-44 |
| 文件頁數(shù)： | 1/28頁 |
| 文件大?。?/td> | 246K |
| 代理商： | AT73C502 |
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Features
Fulfills IEC 1036, Class 1 Accuracy Requirements
Fulfills IEC 687, Class 0.5 and Class 0.2 Accuracy, with External Temperature
Compensated Voltage Reference
Simultaneous Active, Reactive and Apparent Power and Energy Measurement
Power Factor, Frequency, Voltage and Current Measurement
Single and Poly Phase Operation
Three Basic Operating Modes: Stand-Alone Mode, Microprocessor Mode and Multi-
Channel Mode
Flexible Interfacing, 8-bit Microprocessor Interface, 8-bit Status Output and Eight
Impulse Outputs
Calibration of Gain and Phase Error
Compensation of the Non-Linearity of Low Power Measurement
Adjustable Starting Current and Meter Constant
Measurement Bandwidth of 1000 Hz
Tamper Proof Design
Single +5V Supply
Description
A two chip solution, consisting of AT73C500 and AT73C501 (or AT73C502), offers all
main features required for the measurement and calculation of various power and
energy quantities in static Watt-hour meters. The devices operate according to
IEC1036, class 1, specification. IEC 687, class 0.5 and 0.2 requirements are fulfilled
when used with external temperature compensated voltage reference.
The AT73C501 contains six, high-performance, Sigma-Delta analog-to-digital convert-
ers (ADC). The AT73C500 is based on an efficient digital signal processor (DSP) core
and it supports interfacing both with the AT73C501 and with an external microproces-
sor. The AT73C500 DSP can also be used with the differential input ADC, AT73C502.
With this chipset, only a minimum of discrete components is required to develop prod-
ucts ranging from simple domestic Watt-hour meters to sophisticated industrial
meters. The chipset can be used in single-phase as well as in poly-phase systems.
The DSP core of the AT73C500 is easy to configure. By changing the mode of the
AT73C500, the device can be operated in a stand-alone environment or be used with
a separate control processor. It is also possible to configure the circuit to perform the
functions of three independent single phase Wh meters.
The chips support calibration of gain and phase error. All calibrations are done in the
digital domain and no trimming components are needed. The calibration coefficients
are either stored in an EEPROM memory or supplied by an external microprocessor.
(continued)
Chip Set
Solution for
Watt-Hour
Meters
AT73C500 with
AT73C501 or
AT73C502
Rev. 1035A–08/98
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