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參數(shù)資料
| 型號： | SA9122EFA |
| 廠商： | SAMES |
| 元件分類： | 電能質(zhì)量分析儀 |
| 英文描述： | SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH SEPERATE 64 SEGMENT LCD DRIVER |
| 中文描述： | 單向單相功率/電能計量有獨立的集成電路64段LCD驅(qū)動 |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 199K |
| 代理商： | SA9122EFA |
SA9122E
6/12
sames
The current sense input saturates at an input current of ±25μA peak.
For the voltage sensor input, the mains voltage (230VAC) is divided down through
a divider to 14V. The current into the A/D converter input is set at 14μA
RMS
at nominal
mains voltage, via resistor R4 (1M
)
.
In this configuration, with a mains voltage of 230V and a current of 80A, the output
frequency of the SA9122E power meter chip at FOUT1 is 1.16kHz. In this case, 1
pulse will correspond to an energy consumption of 18.4kW/1160Hz = 15.9Ws.
The output frequency at FOUT2 is FOUT1 /290 (i.e. The frequency ouput at FOUT1
divided by 290).
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.
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, by means of resistors R
1
and R
2
.
VOLTAGE
INPUT
DR-00935
IVN
SS
V
CURRENT
SENSOR
INPUTS
IIN
IIP
SS
V
DD
V
SS
V
DD
V
DD
V
GND
A
V
A
I
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA9122EPA | 制造商:SAMES 制造商全稱:SAMES 功能描述:SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH SEPERATE 64 SEGMENT LCD DRIVER |
| SA-91E | 制造商:Jonard Industries / OK Industries 功能描述:FUME EXTRACTOR; Features:Anti-Static With Articulating Arm, Benchtop Mounting; Supply Voltage:115VAC ;RoHS Compliant: NA |
| SA-91-E | 功能描述:焊接工作站設(shè)備 Fume Abs Arm 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 |
| SA9203 | 制造商:SAMES 制造商全稱:SAMES 功能描述:6/3 X 8 PORT EXPANDER |
| SA9205 | 制造商:SAMES 制造商全稱:SAMES 功能描述:6/3 X 8 PORT EXPANDER |
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