3236 scott boulevard santa clara, california 95054 phone: (408) 986-5060 fax: (408) 986-5095 CMM1431-KU features ? 32.5 dbm (typ.) saturated output power ? 32.0 db (typ.) linear gain ? fully matched ? unconditionally stable ? copper/molybdenum flange package for optimum thermal dissipation applications ? ku-band vsat transmit subsystems description the CMM1431-KU is a four-stage phemt gaas mmic power amplifier that is ideally suited for transmit sub- systems designed for ku-band vsat applications. the CMM1431-KU provides 32.0 db linear gain and delivers 1.5 watts of output power at saturation operating from 13.75 to 14.50 ghz frequency. the unconditional stability and internal matching provides for reduction of external components making this product a simple and low-cost solution. the package is designed with a base material of gold-plated copper/molybde- num composite that offers excellent thermal properties and minimum mechanical stress. 13.75 to 14.50 ghz 1.5 watt power amplifier advanced product specifications october 2003 (1 of 2) pin functional diagram maximum ratings (ta = -40? to +70?) operation outside any of these limits can cause permanent damage. parameter rating units parameter rating units drain voltage (+v dd ) 8.5 volts rf input power (p in ) 7.0 dbm gate voltage (v gg ) -3.0 volts storage temperature -50 to +150 ? bias current (i dq ) 1000 ma channel temperature 175 ? gate current (i g ) 5 ma dissipated power (p dis ) 7.3 watts parameter condition min typ max units frequency range 13.75 14.50 ghz saturated output power pin = 3.0 dbm 32.0 32.5 dbm saturated output power variation over operating frequency 0.3 0.6 dbm linear gain 29.0 32.0 35.0 db linear gain variation over operating frequency 2.5 4.5 db input reflection coefficient -10.0 db output reflection coefficient -7.0 db gate supply voltage idq = 770 ma -1.1 -0.9 -0.7 volts drain current at saturation 940 1000 ma power added efficiency 23.0 27.0 % thermal resistance channel to backside ?/w electrical characteristics (t = +25?, vd = 7v, idq = 770ma) CMM1431-KU vdd 1 ground 2 rf in 3 ground 4 vgg 5 10 vdd 9 ground 8 rf out 7 ground 6 vgg parameter condition min typ max units saturated power output variation from room temperature value -0.5 dbm linear gain variation variation from room temperature value -2.5 3.5 db stability unconditionally stable electrical characteristics (t = -40? to +70?, vd = 7v, idq = 770ma)
vdd (+) 3236 scott boulevard, santa clara, california 95054 phone: (408) 986-5060 fax: (408) 986-5095 CMM1431-KU advanced product specifications - october 2003 (2 of 2) celeritek reserves the right to make changes without further notice to any products herein. celeritek makes no warranty, repres entation or guarantee regarding the suitability of its products for any particular purpose, nor does celeritek assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. ?ypical?parameters can and do vary in different applications. all operating parameters, including ?ypicals?must be validated for each customer application by customer? technical experts. celeritek doe s not convey any license under its patent rights nor the rights of others. celeritek products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the celeritek p roduct could create a situation where personal injury or death may occur. should buyer purchase or use celeritek products for any such unintended or unauthorized application, buyer shall indemnify and hold celeritek and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expens es, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that celeritek was negligent regarding the design or manufacture of the part. celeritek is a registered trademark of celeritek, inc. celeritek, inc. is an e qual opportunity/affirmative action employer. ordering information the CMM1431-KU is available in plastic trays. part number for ordering package CMM1431-KU leaded flange package in plastic trays physical dimensions typical performance CMM1431-KU biasing notes 1. dual bias is required 2. 0.1 f bypass capacitors are needed on pc board as close as possible to pins 1, 5, 6 and 10. 3. positive (+) bias can be applied either at pin 1 or pin 6. 4. negative (-) bias can be applied either at pin 5 or pin 6. 5. no dc block is required at rf in/out. 6. negative (-) bias must be applied before applying positive (+) bias. mounting recommendations 1. leads should be as short as possible. 2. solder all leads on pc board. solder area should be as small as possible. grounds should be provided for pins 2, 4, 7, and 9 on pc boards. 3. flange should be screwed down on adequate heat sink. do not over torque screws in order to avoid breaks in ceramic and die (tightening torque: 6lbf-in). 4. grounding shims should be placed between the flange and heat sink to ensure optimal ground contact. aluminum or copper foil can be used. 5. 50 ? rf in/out interface are required for optimal electrical performance. 6. due to the high gain of this device it is highly recommended to maintain the reverse isolation (s12) above 50 db. application notes 110 29 38 47 56 rf out vgg (-) rf in vgg (-) vdd (+) 0.1 f 0.1 f 0.1 f 0.1 f
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