300144Z Datasheet, PDF (1/5 Pages) Vishay Siliconix – Ultra High Precision Z-Foil Voltage Divider Resistors with TCR

300144Z, 300145Z (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Z-Foil Voltage Divider Resistors with TCR
Tracking to 0.1 ppm/°C, Power Coefficient Tracking of 5 ppm
at Rated Power, and Tolerance Match to 0.005 % (50 ppm)
FEATURES
Any value at any tolerance available within resistance range
INTRODUCTION
The 300144Z, 300145Z voltage dividers are the first choice
for ultra high precision, stability and reliable voltage division.
The Z-foil technology provides a significant reduction of the
resistive component’s sensitivity to ambient temperature
variations (TCR) and applied power changes (PCR).
0.05 ppm/°C absolute TCR removes errors due to
temperature gradients.
Models 300144Z and 300145Z offer low TCR (both absolute
and tracking), low power coefficient, excellent load life
stability, tight tolerance, excellent ratio stability, low thermal
EMF, low current noise and non sensitivity to ESD - all in one
• Temperature coefficient of resistance (TCR):
absolute:
± 0.05 ppm/°C typical (0 °C to + 60 °C)
Pb-free
Available
± 0.2 ppm/°C typical (- 55 °C to + 125 °C,
+ 25 °C ref.)
T _{tracking: 0.1 ppm/°C typical}
RoHS*
COMPLIANT
• Tolerance: absolute and matching to 0.005 %
• Power coefficient tracking “ΔR due to self heating”: 5 ppm
C _{at rated power}
• Power rating: 0.2 W at 70 °C, for the entire resistive
element R1 and R2, divided proportionally between the
U two elements
• Ratio stability: < 0.001 % (10 ppm) 0.2 W at 70 °C for
2000 h
D ^{• Maximum working voltage: 200 V}
• Electrostatic discharge (ESD) above 25 000 V
• Non inductive, non capacitive design
O ^{• Rise time: 1 ns without ringing}
• Current noise: < - 40 dB
• Thermal EMF: 0.05 µV/°C typical
R ^{• Voltage coefficient: < 0.1 ppm/V}
• Non inductive: < 0.08 µH
P^{• Non hot spot design}
package.
Model 300145Z is a pair-of 300144Z elements back to back
in a single molded package.
D _{By taking advantage of the overall stability and reliability of}
Vishay Bulk Metal^® foil resistors, designers can significantly
reduce circuit errors and greatly improve overall circuit
E _{performances.}
Our application engineering department is available to
advise and make recommendations. For non-standard
V _{technical requirements and special applications. Please}
O ^{contact us.}
• Terminal finishes available: lead (Pb)-free
tin/lead alloy
• Any value available within resistance range (e.g. 1K2345)
• Prototype samples available from 48 h. For more
information, please contact [e-mail]
• For better performances please contact us
APPLICATIONS
• Instrumentation amplifiers
• Bridge networks
• Differential amplifiers
V1
• Military
V2
• Space
• Medical
• Automatic test equipment
• Down-hole (high temperature)
R2
R1
-
+
R1
R2
Vout
300144Z
300145Z
R _{TABLE 1 - MODELS 300144Z AND 300145Z SPECIFICATIONS}
IMP ^MODEL
RESISTANCE
RATIO
1.1
ABSOLUTE TCR
(- 55 °C to + 125 °C, + 25 °C Ref.)
TYPICAL AND MAX. SPREAD
TCR TRACKING
TYPICAL
0.1 ppm/°C
MAX.
0.5 ppm/°C
TOLERANCE
ABSOLUTE
± 0.005%
MATCH
0.005%
300144Z
4:1
0.5 ppm/°C
0.8 ppm/°C
± 0.005%
0.005%
± 0.2 ppm/°C ± 1.8 ppm/°C
300145Z
10:1
0.5 ppm/°C
1.0 ppm/°C
± 0.01%
0.01%
> 10:1
0.5 ppm/°C
1.5 ppm/°C
± 0.01%
0.01%
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63115
Revision: 21-Nov-07
For any questions, contact: [e-mail]
www.vishay.com
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