KV1420 VARIABLE CAPACITANCE DIODE FEATURES APPLICATIONS ■ Very Low Series Resistance ■ Excellent Linearity (CV Curve) with Very Wide Operating Range ■ Large Capacitance Ratio (A = 2.57 minimum) ■ Two Diodes in a Miniature Package (SOT23-3) ■ Very Small Capacitance Deviation at Tape/Reel ■ FM Radio ■ Voltage Controlled Oscillator ■ Stereo Tuner DESCRIPTION The KV1420 is a high withstanding voltage variable capacitance diode specially designed for high grade stereo tuners. Superior linearity characteristics and a high start-up voltage (7 V) provide for strong input characteristics which make it highly suited to provide a strong front end in mimimizing cross modulation. The KV1420 is available in a miniature SOT23-3 package. CLASSIFICATION RANK (Unit: pF) 1 2 3 4 5 6 7 MIN 44.81 43.93 43.07 42.23 41.40 40.59 39.79 MAX 46.16 45.26 44.37 43.50 42.64 41.81 40.99 C C7 ORDERING INFORMATION KV1420 KV1420 Tape/Reel Code 3 TAPE/REEL CODE 20 P TL: Tape Left 1 July 1999 TOKO, Inc. 2 Page 1 KV1420 ABSOLUTE MAXIMUM RATINGS Reverse Voltage ....................................................... 30 V Forward Current .................................................... 50 mA Power Dissipation .............................................. 100 mW Storage Temperature Range ................... -55 to +150 °C Operating Temperature Range ...................-55 to +85 °C Lead Soldering Temperature (10 s) ...................... 235 °C ELECTRICAL CHARACTERISTICS Test conditions: TA = 25 °C SYMBOL PARAMETER TEST CONDITIONS V REV Reverse Voltage IREV = 10 µA IREV Reverse Current V REV = 25.0 V C7 Diode Capacitance 7 V REV = 7.0 V, f = 1 MHz C13 Diode Capacitance 13 C19 MIN TYP MAX 30 UNITS V 100 nA 39.79 46.16 pF V REV = 13.0 V, f = 1 MHz 24.25 28.70 pF Diode Capacitance 19 V REV = 19.0 V, f = 1 MHz 17.32 20.50 pF C25 Diode Capacitance 25 V REV = 25.0 V, f = 1 MHz 13.93 16.49 pF RS Series Resistance V REV = 7.0 V, f = 70 MHz 0.5 Ω A Capacitance Ratio C7 / C25 2.57 2.80 3.03 Note 1: Diode Capacitance measured with HP 4279A or equivalent instruments (at OSC level 20 mVrms, ± 5 mVrms). Note 2: Series Resistance measured with HP 4191A or equivalent instruments. Page 2 July 1999 TOKO, Inc. KV1420 TYPICAL PERFORMANCE CHARACTERISTICS REVERSE CURRENT vs. REVERSE VOLTAGE CAPACITANCE vs. REVERSE VOLTAGE 100 1n TA = 85 °C 100 p IREV (A) CAPACITANCE (pF) TA = 25 °C f = 1 MHz TA = 55 °C 10 p TA = 25 °C 30 1p 10 0 5 10 15 20 100 f 25 0 4 8 20 24 28 32 VREV (V) VREV (V) QUALITY FACTOR vs. REVERSE VOLTAGE 1000 12 16 SERIES RESISTANCE vs. FREQUENCY 0.6 TA = 25 °C VREV = 7 V TA = 25 °C f = 50 MHz 0.5 RS (Ω) Q 70 MHz 100 100 MHz 10 0.4 0.3 0 5 10 15 20 25 50 100 VREV (V) C (TA) 1.03 C (25 °C) 1000 ∆C /∆ TA (ppm/ C) TA = +85 °C C (TA) C (25 C) 1.01 +55 °C 1.00 +25 °C -15 °C 0.99 500 TEMPERATURE COEFFICIENT vs. REVERSE VOLTAGE vs. REVERSE VOLTAGE TA = -55 °C to +85 °C f = 1 MHz f = 1 MHz 1.02 300 f (MHz) -55 °C 300 100 30 0.98 0.97 0 5 10 15 VREV (V) July 1999 TOKO, Inc. 20 25 10 0 5 10 15 20 25 VREV (V) Page 3 KV1420 PACKAGE OUTLINE Marking Information SOT23-3 0.8 3 F2 1.0 Product Code e1 2.4 Marking e 0.95 1 e 0.95 2 0.4 e 0.95 Recommended Mounting Pad + 0.15 0.05 0.1 M e 0.95 1.5 30 1.2 + 0.15 0.05 0 ~ 0.1 0.4 0.15 1.25 + 0.3 max. 0.3 2.9 2.6 + 0.3 Dimensions are shown in millimeters Tolerance: x.x = ± 0.2 mm (unless otherwise specified) Toko America, Inc. Headquarters 1250 Feehanville Drive, Mount Prospect, Illinois 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 TOKO AMERICA REGIONAL OFFICES Midwest Regional Office Toko America, Inc. 1250 Feehanville Drive Mount Prospect, IL 60056 Tel: (847) 297-0070 Fax: (847) 699-7864 Western Regional Office Toko America, Inc. 2480 North First Street , Suite 260 San Jose, CA 95131 Tel: (408) 432-8281 Fax: (408) 943-9790 Eastern Regional Office Toko America, Inc. 107 Mill Plain Road Danbury, CT 06811 Tel: (203) 748-6871 Fax: (203) 797-1223 Semiconductor Technical Support Toko Design Center 4755 Forge Road Colorado Springs, CO 80907 Tel: (719) 528-2200 Fax: (719) 528-2375 Visit our Internet site at http://www.tokoam.com The information furnished by TOKO, Inc. is believed to be accurate and reliable. However, TOKO reserves the right to make changes or improvements in the design, specification or manufacture of its products without further notice. TOKO does not assume any liability arising from the application or use of any product or circuit described herein, nor for any infringements of patents or other rights of third parties which may result from the use of its products. No license is granted by implication or otherwise under any patent or patent rights of TOKO, Inc. Page 4 © 1999 Toko, Inc. All Rights Reserved July 1999 TOKO, Inc. IC-xxx-KV1471E 0798O0.0K Printed in the USA