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. TYPICAL PERFORMANCE ▲ l ABS TCR TOL – – ABS RATIO 100 – THROUGH HOLE They are available in chip form or hermetic packages. They can operate at temperatures as high as + 200°C. TRACKING 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 2 kΩ R2 R3 2 kΩ 1 kΩ V1 V2 Vref V3 R4 R5 4 kΩ 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 R3 1 kΩ 1 kΩ R2 500 Ω R1 500 Ω V1 Vref 0 R6 750 Ω R5 125 Ω R4 R3 R2 R1 150 Ω 150 Ω 125 Ω 750 Ω V1 0 V2 V2 V3 V3 V4 V4 V5 R4 Vref 200 Ω R3 R2 R1 100 Ω 75 Ω 4 kΩ V1 0 Vref R4 1.5 k Ω R3 75 Ω V2 V3 R2 75 Ω R1 1.5 k Ω V1 0 V2 V3 VISHAY THIN FILM • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 • GERMANY +49.9287.710 FAX: +49 9287.70435 • ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 • ITALY + 39.2.300.11919 FAX: +39.2.300.11999 • JAPAN +81.42.729.0661 FAX: +81.42.729.3400 • SINGAPORE +65.788.6668 FAX: +65.788.0988 • SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 • UK +44 191 514 8237 FAX: +44 1953 457 722 • USA: (610) 407-4800 FAX: (610) 640-9081 Document Number: 60050 Revision 27-Apr-01 www.vishay.com 117 RMK VD Vishay Thin Film Custom, Low Impedance Voltage Dividers STANDARD ELECTRICAL SPECIFICATIONS TEST SPECIFICATIONS CONDITIONS ULTRAFILM® MATERIAL Absolute Tolerance: Stability: ∆R Ratio < 100ppm + 25°C < 200ppm - 25°C, + 180°C 100ppm after 1000 hrs. at + 125°C Operating Temperature Range - 55°C to + 180°C (with voltage ratio reversible drifts less than 100ppm) THROUGH HOLE Noise < - 35dB typical Shelf Life Stability Voltage ratio drifts less than 100ppm after 1000 hrs. at + 155°C MECHANICAL SPECIFICATIONS Resistive Element Nichrome Substrate Material Al2 O3 or Si Passivation Bonding Pads Packages Silicon nitride Al Hermetic side braze or LCC or SO How to Order Consult Factory for ordering information VISHAY THIN FILM • FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 • GERMANY +49.9287.710 FAX: +49 9287.70435 • ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 • ITALY + 39.2.300.11919 FAX: +39.2.300.11999 • JAPAN +81.42.729.0661 FAX: +81.42.729.3400 • SINGAPORE +65.788.6668 FAX: +65.788.0988 • SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 • UK +44 191 514 8237 FAX: +44 1953 457 722 • USA: (610) 407-4800 FAX: (610) 640-9081 www.vishay.com 118 Document Number: 60050 Revision 27-Apr -01