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Product Description |
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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. |
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Features |
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Single 3.3V power supply |
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Internally matched to 50Ω |
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Low Noise Figure : 1.9dB at 2.5GHz , 1.6dB at
0.4GHz |
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Very wide frequency over DC to
4GHz |
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Flat
20 dB linear gain at 2.2 GHz |
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P1dB over -1.5 dBm |
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High/Low
gain control |
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Application |
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General Purpose |
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DBS |
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LNB |
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DVB |
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Cable |
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ISM |
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Pin Configuration |
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Table 1. Pin Descriptions
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PIN # |
DESCRIPTION |
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1 |
Vcc |
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2, 5 |
GND1 |
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3 |
RF out |
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4 |
GND2 |
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6 |
RF in |
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Figure 1. Simplified Outline
(SOT363) and Symbol. |
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Application Circuit |
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C1=C2=100pF, C3=C4=0.1uF. The nominal value of
the RF choke, L1 is 33nH. Increasing the
inductor value will shift the curve towards the
lower frequency region. The operating frequency
can be lowered to 50 MHz when L1 is larger than
220nH.
Figure 2. Application Circuit |
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DS-2725-01_v1_0_RN |
UA2725 Data Sheet |
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AN-GAIN-02_V0_0_RN |
GB Application Note |
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