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參數(shù)資料
| 型號： | HA17431VUP |
| 廠商： | Hitachi,Ltd. |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Infrared Temperature Sensor; Sensor Output Type:K thermocouple; Field of View:10:1; Sensor Terminals:Cable; Accuracy: 1%; Features:Miniature Sensing Head with separate electronics; Response Time:200ms; Supply Voltage:24VDC |
| 中文描述： | 關(guān)于在諸如日立電器和日立二十，文件提及的瑞薩科技公司名稱變更 |
| 文件頁數(shù)： | 16/26頁 |
| 文件大小： | 236K |
| 代理商： | HA17431VUP |
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HA17431 Series
Rev.1, Sep. 2002, page 14 of 24
Application Examples
As shown in the figure on the right, this IC operates as an inverting amplifier, with the REF pin as input
pin. The open-loop voltage gain is given by the reciprocal of
“
reference voltage deviation by cathode
voltage change
”
in the electrical specifications, and is approximately 50 to 60 dB. The REF pin has a high
input impedance, with an input current Iref of 3.8
μ
A Typ (V version: Iref = 2
μ
A Typ). The output
impedance of the output pin K (cathode) is defined as dynamic impedance Z
KA
, and Z
KA
is low (0.2
) over
a wide cathode current range. A (anode) is used at the minimum potential, such as ground.
K
V
CC
OUT
V
EE
A
REF
V
Z
2.5V
–
+
Figure 1 Operation Diagram
Application Hints
No.
Application Example
Description
1
Reference voltage generation circuit
K
R
C
L
Vout
GND
Vin
GND
REF
A
This is the simplest reference voltage circuit. The value
of the resistance R is set so that cathode current I
K
≥
1
mA.
Output is fixed at Vout
2.5 V.
The external capacitor C
(C
≥
3.3
μ
F) is used to
prevent oscillation in normal applications.
2
Variable output shunt regulator circuit
K
R
C
L
Vout
GND
Vin
GND
A
R
1
R
2
REF
Iref
This is circuit 1 above with variable output provided.
Vout
2.5 V
×
Here,
(R
1
+ R
2
)
R
2
Since the reference input current Iref = 3.8
μ
A Typ (V
version: Iref = 2
μ
A Typ) flows through R
, resistance
values are chosen to allow the resultant voltage drop to
be ignored.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HA17431H | Shunt Regulator |
| HA17431HLP | Shunt Regulator |
| HA17431HLTP | Shunt Regulator |
| HA17431HP | Shunt Regulator |
| HA17431HUP | Shunt Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HA17432HLTP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Shunt Regulator |
| HA17432HUP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Shunt Regulator |
| HA17432HUP-E | 制造商:Renesas Electronics Corporation 功能描述:Power Sup,Shunt Req.,Vka=36V,Vref=2.500V |
| HA17432UA | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Shunt Regulato |
| HA17432UA-E | 制造商:Renesas Electronics Corporation 功能描述:Power Sup,Shunt Req.,Vka=40V,Vref=2.495V |
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