Product Description SCA-16 Stanford Microdevices’ SCA-16 is a high performance Gallium Arsenide Hetrojunction Bipolar Transistor MMIC Amplifier. A Darlington configuration is utilized for broadband performance up to 3 GHz. The heterojunction increases breakdown voltage and minimizes leakage current between junctions. Cancellation of emitter junction non-linearities results in higher suppression of intermodulation products. Typical IP3 at 50mA is +28dBm. These unconditionally stable amplifiers provides 15dB of gain and +14.5dBm of 1dB compressed power and requires only a single positive voltage supply. Only 2 DC-blocking capacitors, a bias resistor and an optional inductor are needed for operation. This MMIC is an ideal choice for wireless applications such as cellular, PCS, CDPD, wireless data and SONET. Output IP3 vs. Frequency 32 30 DC-3 GHz, Cascadable GaAs HBT MMIC Amplifier Product Features • High Output IP3 : +28dBm • Flat Gain : +/- 0.7dB Over Full Band • Cascadable 50 Ohm : 1.5:1 VSWR • Patented GaAsHBT Technology • Operates From Single Supply • Low Thermal Resistance Package Applications • Cellular, PCS, CDPD • Wireless Data, SONET 26 24 22 0.1 1 2 3 GHz Electrical Specifications at Ta = 25C Sym bol G P G P F 1dB NF VSWR IP T 3 D IS O L VD P a r a m e te r s : T e s t C o n d itio n s : Id = 5 0 m A , Z 0 = 5 0 O h m s U n its M in . Ty p . 13 15 14 P o w e r G a in f = 0 .1 -2 .0 G H z f = 2 .0 -3 .0 G H z dB dB G a in F la t n e s s G a in F la t n e s s o v e r a n y 1 0 0 M H z b a n d f = 0 .1 -2 .0 G H z dB dB + /- 0 .7 + /- 0 .1 O u t p u t P o w e r a t 1 d B C o m p r e s s io n f = 0 .1 -2 .0 G H z dBm 1 4 .5 N o is e F ig u r e f = 0 .1 -3 .0 G H z dB 5 .5 In p u t a n d O u tp u t V S W R f = 0 .1 -3 .0 G H z - 1 .5 T h ir d O r d e r I n t e r c e p t P o in t O u tp u t To n e @ 0 d B m 1 0 M H z A p a r t f = 0 .1 -2 .0 G H z dBm 2 8 .0 G r o u p D e la y f = 1 .9 G H z psec 100 R e v e r s e I s o la t io n f = 0 .1 -3 .0 G H z D e v ic e V o lt a g e dB V M ax. 20 3 .5 4 .0 d G /d T D e v ic e G a in T e m p e r a t u r e C o e ff ic ie n t d B /d e g C -0 .0 0 1 8 d V /d T D e v ic e V o lt a g e T e m p e r a t u r e C o e ff ic ie n t m V /d e g C -4 .0 4 .5 The information provided herein is believed to be reliable at press time. Stanford Microdevices assumes no responsibility for inaccuracies or omissions. Stanford Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Stanford Microdevices does not authorize or warrant any Stanford Microdevices product for use in life-support devices and/or systems. Copyright 1999 Stanford Microdevices, Inc. All worldwide rights reserved. 522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC 5-149 http://www.stanfordmicro.com 50 Ohm Gain Blocks 28 dBm SCA-16 DC-3 GHz Cascadable MMIC Amplifier Typical Performance at 25° C (Vds = 4.0V, Ids = 50mA) |S21| vs. Frequency |S11| vs. Frequency 18 0 -5 dB 16 dB -10 14 -15 12 -20 0.1 1 2 0.1 3 1 2 3 GHz GHz |S12| vs. Frequency |S22| vs. Frequency -12 0 -5 -16 dB dB -10 -20 -15 -24 -20 0.1 1 2 3 0.1 1 2 3 GHz GHz 50 Ohm Gain Blocks Output Power vs.Frequency 16 15 dBm 14 13 12 0.1 1 2 3 GHz Typical S-Parameters Vds = 4.0V, Id = 50mA Freq GHz |S11| S11 Ang |S21| S21 Ang |S12| S12 Ang |S22| S22 Ang .100 0.247 125 6.531 148 0.108 -42 0.212 124 .500 0.241 117 6.606 136 0.103 -31 0.206 117 .900 0.256 70 6.397 103 0.102 -55 0.228 71 1.00 0.260 58 6.362 93 0.103 -61 0.235 59 1.50 0.272 3 6.174 52 0.102 -93 0.260 3 2.00 0.265 -50 6.078 10 0.101 -122 0.273 -52 2.50 0.240 -104 5.638 -32 0.104 -153 0.274 -109 0.204 -160 5.343 -70 0.106 172 0.264 -167 3.00 (S-Parameters include the effects of two 1.0 mil diameter bond wires, each 20 mils long, connected to the gate and drain pads on the die) 522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC 5-150 http://www.stanfordmicro.com SCA-16 DC-3 GHz Cascadable MMIC Amplifier MTTF vs. Temperature @ Id = 50mA Absolute Maximum Ratings P a ra m e te r A b s o lu t e M a x im u m D e v ic e C u r r e n t 75m A P o w e r D is s ip a t io n 350m W R F In p u t P o w e r 100m W J u n c tio n Te m p e r a t u r e +200C O p e r a tin g Te m p e r a tu r e - 4 5 C to + 8 5 C S to r a g e Te m p e r a tu re - 6 5 C to + 1 5 0 C Lead Temperature MTTF (hrs) +55C 1,000,000 +90C 100,000 +120C 10,000 Thermal Resistance (Lead-Junction): 510° C/W Notes: 1. Operation of this device above any one of these parameters may cause permanent damage. Recommended Bias Resistor Values Supply Voltage (Vs) 5V 7.5V 9V 12V 15V 20V Rbias (Ohms) 20 70 100 160 220 320 Mounting Instructions Typical Biasing Configuration Pin Designation 1. Use 1 or 2 ounce copper, if possible. 2. Solder the copper pad on the backside of the device package to the ground plane. 3. Use a large ground pad area with many plated through-holes as shown. 4. If possible, use at least one screw no more than 0.2 inch from the device package to provide a low thermal resistance path to the baseplate of the package. 5. Thermal resistance from ground lead to screws is 2 deg. C/W. 1 RF in 2 GND 3 RF out and Bias 4 GND Outline Drawing 1 2 4 3 SCA-16 522 Almanor Ave., Sunnyvale, CA 94086 Phone: (800) SMI-MMIC 5-151 http://www.stanfordmicro.com 50 Ohm Gain Blocks The data shown was taken on a 31mil thick FR-4 board with 1 ounce of copper on both sides. The board was mounted to a baseplate with 3 screws as shown. The screws bring the top side copper temperature to the same value as the baseplate.