VFCD1505 Datasheet, PDF (1/4 Pages) Vishay Siliconix – Z-Foil Surface Mount Flip Chip Voltage Divider TCR Tracking of 0.1 ppm/°C,

VFCD1505 (Z-Foil Technology)
Vishay Foil Resistors
Z-Foil Surface Mount Flip Chip Voltage Divider
TCR Tracking of 0.1 ppm/°C, Absolute TCR ± 0.05 ppm/°C,
with Resistance Ratio Stability of 0.005 % (50 ppm)
Bottom View
INTRODUCTION
Bulk Metal^® Z-foil (BMZF) technology out-performs all other
resistor technologies available today for applications that
require ultra high precision and ultra high stability.
The new Z-foil technology provides a significant reduction of
the resistive element’s sensitivity to changes of temperature
due to ambient temperature variations (TCR) and to self
heating when power is applied (power coefficient).
Model VFCD1505 offers low TCR (both absolute and
tracking), excellent load life stability, tight tolerance,
excellent ratio stability, low thermal EMF and low current
noise, all in one package. 0.05 ppm/°C absolute TCR
removes errors due to temperature gradients.
The VFCD1505 surface mount divider provides tight
tolerance matching and TCR tracking between 2 resistors
simultaneously etched on one piece of foil on a common
substrate. The electrical specifications of this integrated
construction offers improved performances and better real
estate utilization over discrete resistors and matched pairs.
Our application engineering department is available to
advise and make recommendations for non-standard
technical requirements and special applications, please
contact us.
FIGURE 1 - POWER DERATING CURVE
- 55 °C
100
75
50
+ 70 °C
FEATURES
• Temperature coefficient of resistance (TCR):
absolute: (table 1)
± 0.05 ppm/°C (typical 0 °C to + 60 °C)
± 0.2 ppm/°C (typical - 55 °C to + 125 °C,
+ 25 °C ref.)
Tracking: (table 1)
0.1 ppm/°C typical
Pb-free
Available
RoHS*
COMPLIANT
• Resistance range: 1K to 10K
• Vishay Foil resistors are not restricted to standard values/
ratios, we can supply specific “as required” values/ratios at
no extra cost or delivery (e.g 2K234/5K456)
• Power coefficient tracking: ”ΔR due to self heating”
5 ppm at rated power
• Short time overload: ± 0.005 %
• Tolerance: absolute and resistance ratio: to 0.01 %
• Load life stability (0.1 W at 70 °C, 2000 h)
Absolute: 0.01 %
Ratio: 0.005 %
• Electrostatic discharge (ESD) up to 25 000 V
• Power rating at 70 °C: entire package: 0.1 W, divided
between the two resistors proportionally to their value
• Non-inductive, non-capacitive design
• Thermal EMF: 0.05 µV/°C typical
• Current noise: < - 40 dB
• Rise time: 1 ns effectively no ringing
• Non inductive: < 0.08 µH
• Voltage coefficient: < 0.1 ppm/V
• Non hot spot design
• Terminal finishes available: lead (Pb)-free
tin/lead alloy
• For better performances please contact us
25
0
- 75 - 50 - 25
0 + 25 + 50 + 75 + 100 + 125 + 150 + 175
Ambient Temperature (°C)
FIGURE 2 -SCHEMATIC
R1
R2
APPLICATIONS
• Instrumentation amplifiers
• Bridge networks
• Differential amplifiers
• Ratio arms in bridge circuits
• Medical and test equipment
• Military
• Airborne etc.
R2
R1
Vin
-
+
Vout
VFCD1505
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 63109
Revision: 30-Oct-08
For any questions, contact: [e-mail]
www.vishay.com
1