RMKVD Datasheet, PDF (1/2 Pages) Vishay Siliconix – Custom, Low Impedance Voltage Dividers

RMK VD
Vishay Thin Film
Custom, Low Impedance Voltage Dividers
FEATURES
• Outstanding Stability
• Low Impedance Voltage Dividers
• Can Operate at High Temperatures
• Available in Many Package Configurations
Due to the outstanding stability of ULTRAFILM^® resistors and
to a specific know how in the field of computer aided design,
we are able to produce ultraprecision low impedance voltage
dividers.
They are available in chip form or hermetic packages. They
can operate at temperatures as high as + 200°C.
TYPICAL PERFORMANCE
vl
TCR
TOL
ABS
–
ABS
100
TRACKING
–
RATIO
–
SCHEMATICS
Vn/Vref ratios are specified as follows:
Ratio accuracy: 300ppm in the range - 55°C to + 150°C
Ratio stability: 100ppm after 1000 hrs. @ + 125°C
R₁
R₂
Vref
2 kΩ
2 kΩ
V₂
R₄
4 kΩ
R₃
1 kΩ
V₁
V₃
R₅
1 kΩ
For these four networks the ratios Vn/Vref are specified as follows:
Tolerance at + 25°C: < 100ppm
Tolerance in the range - 25°C, + 180°C: < 200ppm
Tolerance at + 25°C after 400 hrs. at + 185°C < 200ppm
Vref ^R5 ^R4
1 kΩ 1 kΩ
V₄
R₃
1 kΩ
V₃
R₂
500 Ω
V₂
R₁
0
500 Ω
V₁
Vref
R₆
750 Ω
R₅ R₄
125 Ω 150 Ω
V₄
V₅
R₃
150 Ω
V₃
R₂ R₁
125 Ω
V₂
0
750 Ω
V₁
Vref
R₄ R₃
200 Ω 100 Ω
V₃
R₂
75 Ω
V₂
R₁
0
4 kΩ
V₁
Vref ^{R4 R3}
1.5 k Ω 75 Ω
V₃
R₂
75 Ω
V₂
R₁
0
1.5 k Ω
V₁
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Document Number: 60050
Revision 27-Apr-01
www.vishay.com
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