MA1078-2 MA1078-2 For DCS1800 - 20W Power Amplifier DESCRIPTION 2. Electrical Performances (Tc = +25°C, Vc = +24V, Vd = +10V, Vg = –6V, Zg = Zl = 50Ω) OUTLINE DRAWING The MA1078-2 is a 20W power amplifier designed for DCS 1800, which comprises 4 stages GaAs FET and 2 stages Si bipolar transistors, also RF power monitoring circuit. No. Symbol Condition 142 mm 136 +/– 0.8 mm 3 mm 1 Frequency 2 Output Power 3 Output RF modulation spectrum ; from the carrier 100 KHz 200 KHz 250 KHz 400 KHz 600 KHz to < 1200 KHz 1200 KHz to < 1800 KHz 1800 KHz to < 6000 KHz < 6000 KHz = MA1078-2 70 mm 64.4 +/- 0.8 mm FEATURES ■Specified +25/+10 Volt Chracteristics • RF Output Power : +43 dBm (typ.) • Harmonics : –65 dBc typ. ■Small Size : 70 × 142 × 40 mm3 ■50 Ohm Input/Output Impedances 2.6 mm 4 HOLES φ 3.5 mm RF IN APPLICATION Items Vg(–6V:PIN#12) Vdet(PIN#13) GND(PIN#11) (out) 40 mm 25 PINs D-SUB Vd(+10V:PIN#24) Vc(+24V:PIN#25) Pout ––– (Pin control) Symbol Condition Standard Unit Tc –40 ~ +70 °C Tstg –40 ~ +80 °C 1 Case temperature 2 Storage temperature 3 Collector Voltage VC +26.0 V 4 Drain Voltage Vd Vg = –6V +11.5 V 5 Gate Voltage Vg Vd = +10V –10.0 V 6 RF Input Power Pin –11.0 dBm – 92 – Max 1805 ––– 1880 MHz +43 ––– ––– dBm ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– +0.5 –30 –33 –60 –70 dB dB dB dB dB ––– ––– –73 dB ––– ––– –75 dB ––– ––– –80 dB ––– ––– ––– ––– –36 –30 dBm dBm Spurious ; in-band out-band 5 Harmonics 2fo 3fo 4fo Pout = +43 dBm ––– ––– ––– –60 –65 –70 ––– ––– ––– dBc dBc dBc 6 Quiescent current Icq Pin = OmW ––– ––– 1.5 A 1. Maximum Ratings Items Type Pout = +43 dBm Amplifier Specifications (MA1078-2) No. Unit Min 4 RF OUT 10 mm ■DCS 1800 (1805 ~ 1880 MHz) Base station f Standard – 93 –