SMNZ Datasheet, PDF (1/5 Pages) Vishay Siliconix – Ultra High Precision Z-Foil Surface Mount 4 Resistor Network

SMNZ (Z-Foil)
Vishay Foil Resistors
Ultra High Precision Z-Foil Surface Mount 4 Resistor Network
Dual-In-Line Package with TCR Tracking of 0.1 ppm/°C, PCR
Tracking of 5 ppm at Rated Power, and Tolerance Match of 0.01 %
FEATURES
CT _{Any value and any ratio available within resistance range}
U _INTRODUCTION
The Z-Foil Technology provides a significant reduction of the
D resistive components’ sensitivity to ambient temperature
variations (TCR) and applied power changes (PCR).
0.05 ppm/°C Absolute TCR removes errors due to
temperature gradients.
O _{Model SMNZ offers extremely low TCR (absolute and}
tracking), excellent load life stability, tight tolerance (absolute
and matching), excellent ratio stability, low current noise, low
R ^{voltage coefficient and non sensitivity to ESD - all in the}
same resistor.
The SMNZ Surface Mount Network is made up of 4
P ^{independent Bulk Metal® Z-Foil resistors in a small standard}
molded epoxy package with 50 MIL lead pitch (JEDEC
MS-012 package).
The electrical specification of this integrated construction
offers improved performance and better real estate utilization
D _{over discrete resistors and matched sets. The resistor may}
be used independently or as divider pairs.
Our Application Engineering Department is available to
E _{advise and make recommendations. For non-standard}
technical requirements and special applications, please
contact us.
V _APPLICATIONS
• Instrumentation Amplifiers
O ^{• Bridge Networks}
• Differential Amplifiers
V1
• Ratio Arms in Bridge Circuits ^V2
• Medical and Test Equipment
R _{• Military}
• Airborne etc
R2
R1
-
+
R1
R2
Vout
SMNZ
• Temperature Coefficient of Resistance (TCR):
Absolute: ± 0.05 ppm/°C typical (0 °C to + 60 °C)
Pb-free
± 0.2 ppm/°C typical (-55 °C to + 125 °C, _Available
+ 25 °C Ref.) (see table 1)
Tracking: 0.1 ppm/°C typical (see table 1)
RoHS*
• Tolerance Match: 0.01 %
COMPLIANT
• Power Coefficient Tracking - “R2 -R1 due to self heating”:
5 ppm at Rated Power
• Power Rating: at 70 °C
Entire Package: 0.4 W
Each Resistor: 0.1 W
• Ratio Stability: 0.005 % (0.1 W at 70 °C, 2000 hours)
• Large Variety of Resistance Ratios
• Electrostatic Discharge (ESD) above 25 000 Volts
• Short Time Overload ≤ 0.0025 %
• Non Inductive, Non Capacitive Design
• Rise Time: 1 ns without ringing
• Current Noise: < - 40 dB
• Voltage Coefficient < 0.1 ppm/V
• Non Inductive: < 0.08 µH
• Non Hot Spot Design
• Terminal Finishes available: Lead (Pb)-free
Tin/Lead Alloy
• For better performances please contact us
• Any value available within resistance range (e.g. 1K2345)
• Prototype samples available from 48 hours. For more
information, please contact [e-mail]
FIGURE 1 - SCHEMATICS
R1 R1 R1 R1
OPTION 1
FOUR RESISTORS, SAME OHMIC VALUE
SAME ABSOLUTE TOLERANCE
R1 R2 R2 R1
OPTION 2
TWO RESISTOR PAIRS
Note
R1/R2; R2/R1
1. Different schematics are available (R1, R2, R3, R4)
P _{TABLE 1 - MODEL SMNZ SPECIFICATIONS}
MODEL
IM_SMNZ
RESISTANCE
VALUES¹⁾
ABSOLUTE TCR
(- 55 °C TO + 125 °C, + 25 °C REF.)
(TYPICAL + MAX. SPREAD)
100 Ω - 1 kΩ
1 kΩ - 10 kΩ
± 0.2 ± 2.8
± 0.2 ± 1.8
RESISTANCE
RATIO
R1/R2 = 1
1 < R1/R2 ≤ 10
10 < R1/R2 ≤ 100
TCR TRACKING
MAX.
0.5 ppm/°C
1.0 ppm/°C
2.0 ppm/°C
TOLERANCE
ABSOLUTE MATCH
± 0.02 %
± 0.05 %
± 0.1 %
0.01 %
0.02 %
0.05 %
Note
1. SMN (Classic Foil) available with values up to 20 kΩ
* Pb containing terminations are not RoHS compliant, exemptions may apply
www.vishay.com
1
For any questions, contact: [e-mail]
Document Number: 63117
Revision: 22-May-07