UM9401_09

UM9401 / UM9402 / UM9415 TM ® COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available DESCRIPTION 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. 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) The UMX series meets RoHS requirements per EU Directive 2002/95/EC. KEY FEATURES  High transmitter power UM9401/UM9402 => 100 W UM9415 => 1000 W  Low harmonic distortion  Low third order distortion  High carrier lifetime  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. 1 www.MICROSEMI.com IMPORTANT: For the most current data, consult our website: www.MICROSEMI.com  Lead finish UM9401: Pb/Sn UM9402: Gold UM9415: Pb/Sn UMX9401,UMX9415: Matte Tin ABSOLUTE MAXIMUM RATINGS AT 25º C (UNLESS OTHERWISE SPECIFIED) CONDITION Reverse Voltage (VR) @ IR = 10 uA ½ in. total O length to 25 C Contact 25 oC (Package Flange Temperature) Free Air Operating Temp. (TOP) Storage Temp. (TSTG) UM9401 50V 5.5W UM9402 50V UM9415 50V 10W Average Power Dissipation (PA) 10W 1.5W -65 C to +175 C -65 oC to +175 oC o o 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 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 Page 1 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 UM9401 / UM9402 / UM9415 TM ® COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available www.MICROSEMI.com ELECTRICAL PARAMETERS @ 25C (unless otherwise specified) UM9401 / UM9402 Parameter Reverse Current Series Resistance Capacitance Parallel Resistance Carrier Lifetime Forward Voltage Transmit Harmonic Distortion Receive Third Order Distortion Symbol IR RS CT RP TL VF R2A/A R3A/A R2AB/A Conditions VR = 50 V IF = 50 mA, F= 100 MHz VR = 0 V, F = 100 MHZ VR = 0 V, F = 100 MHz IF = 10 mA IF = 50 mA Pin = 50 W f = 50 MHz, IF = 50 mA Pin = 10 W, 0 V Bias fA = 50 MHz, fB = 51 MHz 5 1.0 0.75 1.1 10 2.0 1.0 80 60 Min Typ Max 10 1.0 1.5 1 5.0 Min UM9415 Typ Max 10 0.75 2.8 2 1.0 4 Units uA Ω pF kΩ us 1.0 80 60 V -dB -dB ELECTRICALS ELECTRICALS Copyright  2007 Rev: 2009-02-05 Microsemi Microwave Products Page 2 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 UM9401 / UM9402 / UM9415 TM ® COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available RS VS IF Rs versus If TYPICAL 103 f = 100 MHz VF VS IF Vf versus If TYPICAL 100 www.MICROSEMI.com 102 UM9401/UM9402 10-1 Rs (Ohms) UM9415 101 10-2 If (A) UM9415 10-3 UM9401/UM9402 100 10-4 10-1 10-5 10-4 10-3 10-2 10-1 100 If (A) 10-5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 Vf (V) CT VS FREQUENCY Ct versus f TYPICAL 10 8 7 6 5 Vr = 0 V RP VS FREQUENCY Rp versus f TYPICAL 10 3 102 UM9415 Ct (pF) 4 3 Vr = 50 V Rp (kOhms) 2 Vr = 0 V 101 UM9401/UM9402 Vr = 50 V UM9415 Vr = 50 V UM9401/UM9402 Vr = 0 V UM9401/UM9402 Vr = 50 V 1 10 100 1000 UM9415 Vr = 0 V 100 10 1 2 10 10 3 10 4 f (MHz) f (MHz) GRAPHS Copyright  2007 Rev: 2009-02-05 Microsemi Microwave Products Page 3 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 UM9401 / UM9402 / UM9415 TM ® COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available UM9415 POWER CURVE UM9401, 9402 POWER CURVE www.MICROSEMI.com UM9415 MAX POWER MAXIMUM TRANSMITTER POWER UM9415 Zo = 50 Ohms, L = 1/2", SWR = INFINITE 3000 UM9401, 9402 MAX POWER MAXIMUM TRANSMITTER POWER UM9401/UM9402 1000 Zo = 50 Ohms, L = 1/2", SWR = INFINITE Maximum Transmitter Power (W) 1000 Maximum Transmitter Power (W) 100 If = 1 A If = 500 mA 100 If = 200 mA If = 200 mA If = 100 mA 10 If = 50 mA If = 20 mA If = 10 mA If = 100 mA If = 50 mA 10 25 50 75 100 125 o 150 175 200 1 25 50 75 100 125 o 150 175 200 Lead Temperature ( C) Lead Temperature ( C) GRAPHS GRAPHS Copyright  2007 Rev: 2009-02-05 Microsemi Microwave Products Page 4 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 UM9401 / UM9402 / UM9415 TM ® COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available “STYLE” UM9401B “STYLE” UM9415B www.MICROSEMI.com “STYLE” UM9401SM “STYLE” UM9415SM MECHANICAL Copyright  2007 Rev: 2009-02-05 Microsemi Microwave Products Page 5 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 UM9401 / UM9402 / UM9415 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 Page 6 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748 UM9401 / UM9402 / UM9415 TM ® COMMERCIAL TWO WAY RADIO ANTENNA SWITCH DIODES RoHS Compliant Versions Available Maximum Transmitter Power 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, σ, and the nominal impedance, ZO. The expression is as follows: 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. www.MICROSEMI.com PT ( MAX ) P xZ    1   D O  RD  2  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 ½ in. total overall lead length, 50 Ω line impedance, and a totally mismatched antenna (σ = ∞). For the case of a perfectly matched antenna, the maximum transmitter power can be increased by a factor of 4. 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 ANTENNA D1 /4 TRANSMITTER D2 RECEIVER DC SUPPLY ANTENNA D1 L TRANSMITTER D2 RECEIVER L = ZO / 2 fO C = 1/2 fO ZO L (H) (F) C C DESIGN Copyright  2007 Rev: 2009-02-05 Microsemi Microwave Products Page 7 75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748