UA2725

UA2725 UA2725 Gain Block Data Sheet DS-2725-01 The content of this technical document is subject to change without notice. Please contact UBEC for further information. Version: 1.0 Released Date: 2008/01/17 All rights are strictly reserved. Any portion of this paper shall not be reproduced, copied, or transformed to any other forms without prior permission from Uniband Electronic Corp. DS-2725-01 page 1/ 16 UA2725 Gain Block 1. Product Description UA2725 The UA2725 is a wideband LNA MMIC with an internal input/output matching, high/low gain control, and packaged in a 6-pin SOT363 plastic package. 2. Features ‰ Single 3.3V power supply ‰ Internally matched to 50Ω ‰ Low noise figure: 1.9dB at 2.5GHz, 1.6dB at 0.4GHz. ‰ Very wide frequency over 0.05 to 4GHz ‰ Flat 20dB gain up to 2.2GHz ‰ Unconditionally stable ‰ P1dB over -1.5dBm at 2.5GHz ‰ High/Low gain control 3. Typical Applications ‰ DBS ‰ LNB IF Amplifier ‰ DVB ‰ Cable ‰ ISM ‰ General Purpose DS-2725-01 page 2/ 16 UA2725 4. Pin Configuration Table 1. Pin Descriptions Pin # 1 2, 5 3 4 6 Description VGC GND1 RF out GND2 RF in 65 4 U5 1 6 3 12 3 2, 5 4 Figure 1. Simplified Outline (SOT363) and Symbol 5. Application Circuit VGC Vcc C3 C4 L1 1 RF input C1 6 3 RF output C2 2, 5 4 GND1 GND2 Figure 2. Operating Condition for the Application Circuit C1=C2=100pF, C3=C4=0.1uF. The nominal value of the RF choke, L1 is 33nH. Increasing the inductor value will shift the curv...