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參數(shù)資料
| 型號： | SA9109B |
| 廠商： | SAMES |
| 元件分類： | 電能質(zhì)量分析儀 |
| 英文描述： | MONOCHIP SINGLE PHASE BIDIRECTIONAL KILOWATT HOUR METERING IC |
| 中文描述： | MONOCHIP單相雙向千瓦小時計量IC |
| 文件頁數(shù)： | 6/18頁 |
| 文件大?。?/td> | 183K |
| 代理商： | SA9109B |
SA9109B
6/18
sames
FUNCTIONAL DESCRIPTION
The SA9109B is a CMOS mixed signal Analog/Digital integrated circuit, which performs
power calculations across a power range of 1000:1, to an overall accurancy of better than
Class 1. An on-chip LCD driver directly drives a 7 digit (7 segment) LCD display. Also
included on-chip, are 4 tariff registers externally selectable for multi-tariff energy metering
applications and a fifth register which retains the total energy consumption.
The integrated circuit includes all the required functions such as two oversampling A/D
converters for the voltage and current sense inputs, power calculation and energy
integration. Offset is eliminated through the use of internal cancellation procedures.
1.
Power Calculation
In the Application Circuit (Figure 1), the voltage drop across the shunt will be
between 0 and 16mV
(0 to 80A through a shunt resistor of 200μ
). This voltage
is converted to a current of between 0 and 16μA
RMS
, by means of resistors R
1
and
R
2
.
The current sense input saturates at an input current of ±25μA peak.
The voltage level from the mains is divided down through a divider to 14V.This
voltage is converted to a signal current of 14μA
RMS
into the voltage sensor input.
A pulse rate output for calibration purposes is available on SDO (Pin 39), the pulse
rate being proportional to the active energy consumption.
The integrated anti-creep function ensures no metering when no line current is
present.
Analog Input Configuration
The input circuitry of the current and voltage sensor inputs are illustrated below.
These inputs are protected against electrostatic discharge through clamping
diodes.
The feedback loops from the outputs of the amplifiers A
and A
generate virtual
shorts on the signal inputs. Exact duplications of the input currents are generated
for the analog signal processing circuitry.
2.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA9109BFA | 制造商:SAMES 制造商全稱:SAMES 功能描述:MONOCHIP SINGLE PHASE BIDIRECTIONAL KILOWATT HOUR METERING IC |
| SA9110A | 制造商:SAMES 制造商全稱:SAMES 功能描述:MONOCHIP THREE PHASE BIDIRECTIONAL |
| SA-9-115 | 功能描述:焊接工作站設(shè)備 Fume Absorber 115V RoHS:否 制造商:OK International 產(chǎn)品:Stands 類型:Soldering and Rework System 最大溫度:+ 55 C 電纜類型:US Cord Included |
| SA9-115 | 制造商:Jonard Industries / OK Industries 功能描述:FUME EXTRACTOR; Features:Benchtop Mounting; Supply Voltage:115VAC ;RoHS Compliant: NA |
| SA9-120-13 | 功能描述:ANT VPOL SECTOR 13DBI 900MH NFEM RoHS:是 類別:RF/IF 和 RFID >> RF 天線 系列:* 標準包裝:1 系列:* |
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