UM9401 / UM9402 / UM9415 (R) TM COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available KEY FEATURES DESCRIPTION High transmitter power UM9401/UM9402 => 100 W UM9415 => 1000 W Low harmonic distortion The UM9401 and the UM9402 diodes can handle 100 W of transmitter power, while the UM9415 will handle over 1000 W. The extensive characterization of these PIN diodes in antenna switch applications has resulted in guaranteed low distortion specifications under transmit and receive conditions. These diodes also feature low forward bias resistance and high zero bias impedance which are required for low loss, high isolation and wide bandwidth antenna switch performance. For RoHS compliant devices, use the UMX prefix. (IE: UMX9415) High carrier lifetime The UMX series meets RoHS requirements per EU Directive 2002/95/EC. www.MICROSEMI.com Microsemi offers a series of PIN diodes specifically designed and characterized for solid state antenna switches in commercial two-way radios. Antenna switches using the UM9401 and UM9415 series PIN diodes provide high isolation, low loss and low distortion characteristics formerly possible only with electromechanical relay type switches. Low third order distortion Non cavity design Thermally matched configuration Low capacitance at 0 V bias Low conductance at 0 V bias Compatible with automatic insertion equipment RoHS complaint versions available. IMPORTANT: For the most current data, consult our website: www.MICROSEMI.com 1 Lead finish UM9401: Pb/Sn UM9402: Gold ABSOLUTE MAXIMUM RATINGS AT 25 C (UNLESS OTHERWISE SPECIFIED) Reverse Voltage (VR) Average Power Dissipation (PA) UM9415: Pb/Sn CONDITION UM9401 UM9402 UM9415 @ IR = 10 uA 50V 50V 50V 1/2 in. total O length to 25 C Contact 25 oC (Package Flange Temperature) Free Air 5.5W 10W 10W 1.5W UMX9401,UMX9415: Matte Tin 1 - The UM9402 is RoHS complaint. RoHS compliant versions of the UM9401 and UM9415 are supplied as UMX9401, UMX9415. Consult factory for details. 2.5W o o Operating Temp. (TOP) -65 C to +175 C Storage Temp. (TSTG) -65 oC to +175 oC APPLICATIONS/BENEFITS Isolated stud package available UM9401 / UM9402 UM9415 Surface mount package available Maximum soldering temperature o 260 C for 30 seconds. Copyright 2007 Rev: 2009-02-05 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 1 UM9401 / UM9402 / UM9415 (R) TM COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available UM9401 / UM9402 Parameter Symbol Conditions Min Typ Max UM9415 Min Typ 10 Max Units 10 uA Reverse Current IR VR = 50 V Series Resistance RS IF = 50 mA, F= 100 MHz 0.75 1.0 0.75 1.0 Capacitance CT VR = 0 V, F = 100 MHZ 1.1 1.5 2.8 4 pF Parallel Resistance RP VR = 0 V, F = 100 MHz Carrier Lifetime TL IF = 10 mA Forward Voltage VF IF = 50 mA 1.0 1.0 V 5 10 1 1.0 2.0 5.0 2 k www.MICROSEMI.com ELECTRICAL PARAMETERS @ 25C (unless otherwise specified) us Transmit Harmonic Distortion R2A/A R3A/A Pin = 50 W f = 50 MHz, IF = 50 mA 80 80 -dB Receive Third Order Distortion R2AB/A Pin = 10 W, 0 V Bias fA = 50 MHz, fB = 51 MHz 60 60 -dB ELECTRICALS Copyright 2007 Rev: 2009-02-05 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 2 UM9401 / UM9402 / UM9415 (R) TM COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available RS VS IF VF VS IF Rs versus If TYPICAL 100 f = 100 MHz 102 10-1 UM9401/UM9402 UM9415 101 10-2 If (A) Rs (Ohms) www.MICROSEMI.com Vf versus If TYPICAL 103 UM9415 UM9401/UM9402 10-3 100 10-4 10-1 10-5 10-4 10-3 10-2 10-1 100 10-5 If (A) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Vf (V) CT VS FREQUENCY RP VS FREQUENCY Ct versus f TYPICAL Rp versus f TYPICAL 3 10 10 8 7 6 102 Vr = 0 V Rp (kOhms) Ct (pF) 5 4 UM9415 3 Vr = 50 V UM9401/UM9402 Vr = 50 V 101 2 UM9415 Vr = 50 V Vr = 0 V UM9401/UM9402 Vr = 0 V UM9401/UM9402 UM9415 Vr = 0 V Vr = 50 V 1 10 100 1000 100 1 10 f (MHz) 2 10 3 10 4 10 f (MHz) GRAPHS Copyright 2007 Rev: 2009-02-05 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 3 UM9401 / UM9402 / UM9415 (R) TM COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available UM9401, 9402 POWER CURVE UM9415 MAX POWER UM9401, 9402 MAX POWER www.MICROSEMI.com UM9415 POWER CURVE MAXIMUM TRANSMITTER POWER UM9415 MAXIMUM TRANSMITTER POWER UM9401/UM9402 Zo = 50 Ohms, L = 1/2", SWR = INFINITE Zo = 50 Ohms, L = 1/2", SWR = INFINITE 1000 Maximum Transmitter Power (W) Maximum Transmitter Power (W) 3000 1000 If = 1 A If = 500 mA 100 If = 200 mA If = 100 mA If = 50 mA 100 If = 200 mA If = 100 mA If = 50 mA 10 If = 20 mA If = 10 mA 10 25 50 75 100 125 150 175 200 1 25 50 75 100 125 150 175 200 o Lead Temperature ( C) o Lead Temperature ( C) GRAPHS Copyright 2007 Rev: 2009-02-05 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 4 UM9401 / UM9402 / UM9415 (R) TM COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available "STYLE" UM9415B "STYLE" UM9401SM "STYLE" UM9415SM www.MICROSEMI.com "STYLE" UM9401B MECHANICAL Copyright 2007 Rev: 2009-02-05 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 5 UM9401 / UM9402 / UM9415 (R) TM COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available "STYLE" UM9402 www.MICROSEMI.com UM9401SM FOOTPRINT UM9415SM FOOTPRINT MECHANICAL Copyright 2007 Rev: 2009-02-05 Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 Page 6 UM9401 / UM9402 / UM9415 (R) TM COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available Maximum Transmitter Power PT ( MAX ) P xZ 1 D O RD 2 transmit; at zero bias the receive insertion loss is less than 0.3 dB. This performance is achievable across a 20 % bandwidth at center frequencies ranging from 10 to 500 MHz. 2 [Watts] DC SUPPLY Characteristic curves are shown in the data section which gives both the maximum and typical diode resistance, RS as a function of forward current. The maximum power dissipation rating of the PIN diode depends both on the length of the diode leads and the temperature of the contacts to which the leads are connected. A graph defining the maximum power dissipation at various combinations of overall lead length (L) and lead temperature (TL) is given in the data section. From these curves and the above equation, the power handling capability of the PIN diode may be computed for a specific application. Curves are also presented which show the maximum transmitter power that an antenna switch using UM9401s and UM9415s can safely handle for various forward currents and lead temperatures. These curves are based on a typical design condition of a 1/2 in. total overall lead length, 50 line impedance, and a totally mismatched antenna ( = ). For the case of a perfectly matched antenna, the maximum transmitter power can be increased by a factor of 4. ANTENNA /4 D1 TRANSMITTER D2 RECEIVER D2 RECEIVER www.MICROSEMI.com The maximum CW transmitter power, PT(max), a PIN diode antenna switch can handle depends on the diode resistance, RS, power dissipation, PD, antennae SWR, , and the nominal impedance, ZO. The expression is as follows: DC SUPPLY ANTENNA D1 L TRANSMITTER L = ZO / 2 fO (H) C = 1/2 fO ZO (F) L Copyright 2007 Rev: 2009-02-05 C C Microsemi Microwave Products 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 DESIGN Design Information A circuit configuration for a two-way radio antenna switch using PIN diodes consists of a diode placed in series with the transmitter and a shunt diode placed a quarter wavelength from the antenna in the direction of the receiver as shown. For low frequency operation, the quarter wave line may be simulated by lumped elements. Typical performance of antenna switches using PIN diodes forward biased at 100 mA is less than 0.2 dB insertion loss and 30 dB isolation during Page 7