CustomNeCtuwsotrokms,2N-,3e-towr4o-rRkess,is2t-o,r3s(-ZoFroi4lT-eRcehsniosltoogrys)
(Z Foil Technology)
Ultra High Precision Z Foil Voltage Divider and Network Resistor
with TCR Tracking to 0.1 ppm/°C and Resistance Match to 0.00ꢀ5 (ꢀ0 ppm)
FEATURES
• Resistance range: 5 Ω to 100 kΩ per resistive element
(any ohmic value ratio is available within resistance range)
• Temperature coefficient of resistance (TCR):
0.2 ppm/°C typical (0°C to ꢀ125°C, ꢀ25°C ref.)
TCR Tracking from 0.1 ppm/°C
• Power coefficient “DR due to self heating”:
5 ppm at rated power
• Ratio match tolerance: to 0.005% (50 ppm)
• Resistance ratio stability: to 0.01%
Any value at any tolerance available within resistance range
(0.2 W per element, 70°C, 2,000 hrs)
• Electrostatic discharge (ESD) at least to 25 kV
• Short time overload: 0.002%
• Power rating to: ꢀ125°C: 0.3 W per element
• Down-hole (high temperature)
• Thermal EMF: 0.05 μV/°C
• Non hot spot design
• Thermal stabilization time < 1 s (nominal value
• Military, airborne and space
• EB applications
• Medical
• Automatic test equipment (ATE)
achieved within 10 ppm of steady state value)
• Current noise: 0.010 μVRMS/V of applied voltage
INTRODUCTION
The 2R, 3R, 4R Resistor Networks are the designers’
first choice for ultra high precision, stable and reliable
Voltage Divider or Network.
(<–40 dB)
• Rise time: 1ns without ringing
• Non-inductive: 0.08 μH
• Voltage coefficient 0.1 ppm/V
• Prototype quantities are available, please contact
foil@vpgsensors.com
The Z Foil Technology provides a significant reduction
of the resistive component’s sensitivity to ambient
temperature variations (TCR) and applied power changes,
self-heating (PCR). Absolute TCR of 0.2 ppm/°C typical
removes errors due to temperature gradients.
• Terminal finishes available: lead (Pb)-free, tin/lead alloy*
The availability of low absolute TCR and low PCR,
provides a good cost solution for the variability of other
components when compiling the total error budget.
APPLICATIONS
• Instrumentation amplifiers
• Bridge networks
• Differential amplifiers
The four fundamental factors determining how “ideal”
a precision divider and network will be:
Figure 2—Typical TCR Curve Z Foil
Figure 1—Power Derating Curve
- 55°C
+ 70°C
200%
175%
150%
125%
100%
75%
50%
25%
0
TCR Values for Different Temperature Ranges
Double Rated Power
+500
+400
+300
+200
Rated Power
+100
∆R
0
–100
–200
–300
–400
–500
R
(ppm)
0.05 ppm/°C
–0.1 ppm/°C 0.1 ppm/°C
0.14 ppm/°C
–0.16 ppm/°C
0.2 ppm/°C
–55
–25
0
+25
+60 +75 +100 +125
- 75 - 50 - 25
0
+25 + 50 + 75 + 100 +125 +150 +175 +200
Ambient Temperature (°C)
Ambient Temperature (°C)
* This datasheet provides information about parts that are RoHS-compliant and/or parts that are non-RoHS-compliant. For example,
parts with lead (Pb) terminations are not RoHS compliant. Please see the information/tables in this datasheet for details.
Document No.: 63114
Revision: 23-May-2016
For any questions, contact
foil@vpgsensors.com
www.vishayfoilresistors.com
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