TC3142 PRE2_20050615 Preliminary 2.45 GHz 5V 32dBm Single-bias MMIC FEATURES PHOTO ENLARGEMENT ! P-1 dB: 33 dBm ! Small Signal Gain: 13.5 dB ! Power Added Efficiency: 45 % ! IP3: 43 dBm ! DC Bias: 600 mA @ 5 V Vc VDD GND RF OUT RF IN RF OUT GND GND DESCRIPTION The TC3142 is a one stage PHEMT MMIC power amplifier. It is designed for use in low cost, high volume, 2.4-2.5 GHz ISM band applications. The MMIC provides a typical gain of 13.5 dB and saturation power of more than 34 dBm. Typical bias condition is 5V at 600 mA. The MMIC is packaged in a standard SO-8 power package. The copper based carrier of the package allows direct soldering of the device to the PCB for proper heat sinking. The input and output matching of the MMIC require external components. ELECTRICAL SPECIFICATIONS (Ta = 25 °C) SYMBOL DESCRIPTION MIN TYP MAX UNITS FREQ Frequency Range 2.4 SSG Small Signal Gain 12 13.5 2.5 GHz dB P-1 dB Output Power at 1 dB Gain Compression 32 33 dBm P-3 dB Output Power at 3 dB Gain Compression 33 34 dBm IP3 Third Order Intercept Point 42 VSWR, IN Input VSWR VDD Supply Voltage IDD 43 dBm 2:1 - 5 Volt Current Supply Without RF 600 mA IDP-1 Current Supply @ Pout = P-1 dB 900 mA ηa Power Added Efficiency 45 % TRANSCOM, INC., 90 Dasoong 7th Road, Tainan Science-Based Industrial Park, Hsin-She Shiang, Tainan County, Taiwan Web-Site: www.transcominc.com.tw Phone: 886-6-5050086 Fax: 886-6-5051602 P1/3 TC3142 PRE2_20050615 EVALUATION BOARD PCB Material: FR4 ER = 4.6 Thickness = 31 mil Unit: mil Vc VDD GND RF OUT RF IN TC3142 GND RF OUT GND Application Notes: (1) The DC bias condition should be 5 V / 600 mA by setting the Vc voltage which can be adjusted by the Rc Rc . on the external evaluation board based on the following formula： Vc = 5 × R1 + Rc (2) For better heat sinking and grounding, it's recommended to have the via holes beneath TC3142 filled with solder and have two screws besides TC3142 installed on the PCB area. Evaluation Board Parts List Part Type Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Capacitor Resistance Reference Designator C1 C2 C3 C4 C5, C8 C6 C7, C9 C10 R1 Description 0.5 pF 0603 0.75pF 0603 1.2 pF 0603 1.5 pF 0603 12 pF 0603 100 pF 0603 1000 pF 0603 4.7uF 1206 Tantalum Cap 220 ohm Manufacturer Murata Murata Murata Murata Murata Murata Murata Part Number GRM39C0GR75C50V GRM39C0G1R2C50V GRM39C0G1R5C50V GRM39C0G102J50V TRANSCOM, INC., 90 Dasoong 7th Road, Tainan Science-Based Industrial Park, Shanhua Jen, Tainan County Taiwan, R.O.C. Web-Site: www.transcominc.com.tw Phone: 886-6-5050086 Fax: 886-6-5051602 P2/2 TC3142 PRE2_20050615 CONNECTION DIAGRAM AND PIN DESCRIPTIONS Vc GND 4 5 3 6 2 7 1 8 Vd MATCH RF IN MATCH GND RF OUT Pin # 2 1, 3, 8 4 6, 7 5 Name RF IN GND Vc RF OUT Vd Description RF input Ground FET gate bias RF output FET drain bias GND PHYSICAL DIMENSIONS (Unit: inch) α α TRANSCOM, INC., 90 Dasoong 7th Road, Tainan Science- Based Industrial Park, Shanhua Jen, Tainan County, Taiwan, R.O.C. Web-Site: www.transcominc.com.tw Phone: 886-6-5050086 Fax: 886-6-5051602 P3/3