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WT431 [WEITRON]

Adjustable Accurate Reference Source; 可调式精密基准源
WT431
型号： WT431
厂家： WEITRON TECHNOLOGY    WEITRON TECHNOLOGY
描述：

Adjustable Accurate Reference Source
可调式精密基准源
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中文：  中文翻译
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WT431  
Adjustable Accurate Reference Source  
P b  
Lead(Pb)-Free  
FEATURES  
1.REFERENCE  
The output voltage can be adjusted to 36V  
Low dynamic output impedance ,its typical value is 0.2Ω  
Trapping current capability is 1 to 100mA  
The typical value of the equivalent temperature factor in the  
whole temperature scope is 50 ppm/℃  
The effective temperature compensation in the working  
range of full temperature  
2.ANODE  
3.CATHODE  
1 2 3  
Low output noise voltage  
Fast on -state response  
TO-92  
ABSOLUTE MAXIMUM RATINGS（Operating temperature range applies unless otherwise specified）  
Parameter  
Cathode Voltage  
SYMBOL  
VKA  
VALUE  
37  
UNITS  
V
Cathode Current Range (Continuous)  
Reference lnput Current Range  
Power Dissipation  
IKA  
-100-+150  
0.05-+10  
770  
mA  
Iref  
mA  
PD  
mW  
Operating temperature  
Topr  
Tstg  
0-70  
℃
℃
Storage temperature Range  
-65-+150℃  
ELECTRICAL CHARACTERISTICS（Tamb=25℃  
unless otherwise specified）  
Parameter  
Symbol  
Vref  
Test conditions  
MIN  
TYP  
2.5  
MAX  
UNIT  
V
Reference lnput Voltage  
VKA=VREF, IKA=10mA  
2.475  
2.525  
17  
V
KA =VREF, IKA =10mA  
Tmin≤Ta≤Tmax  
△VKA  
Deviation of reference input Voltage  
Over temperature (note)  
△Vref/△T  
4.5  
-1.0  
-0.5  
1.5  
mV  
-2.7  
-2.0  
4
m V/V  
m V/V  
Ratio Of Change in Reference lnput  
Voltage to the change in Cathode  
Voltage  
=10V～VREF  
△Vref/△VKA IKA=10mA  
△VKA  
=36V～ 10V  
I
KA= 10mA,R1=10KΩ  
R2=∞  
Reference lnput Current  
lref  
μA  
μA  
lKA=10mA, R1=10KΩ  
R2=∞  
TA=full Temperature  
Deviation Of Reference lnput Current  
Over Full Temperature Range  
△lref/△T  
0.4  
1.2  
Minimum cathode current for  
regulation  
IKA(min)  
IKA(OFF)  
ZKA  
VKA=VREF  
0.45  
0.05  
0.15  
1.0  
1.0  
0.5  
mA  
μA  
Ω
Off-state cathode Current  
VKA=36V ,VREF=0  
VKA=VREF,lKA=1 to 100mA  
f≤1.0KHz  
Dynamic lmpedance  
Note:TMIN=0℃ ,TMAX=+70℃  
CLASSIFICATION OF Vref  
Rank  
WT431 (0.5%)  
WT431A (1.0%)  
2.475-2.525  
WT431B (2.0%)  
2.450-2.550  
Range  
2.487-2.512  
WEITRON  
http://www.weitron.com.tw  
1/2  
01-Jun-09  
WT431  
WEITRON  
http://www.weitron.com.tw  
2/2  
01-Jun-09  

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