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BFS520 数据表(PDF) 17 Page - NXP Semiconductors |
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BFS520 数据表(HTML) 17 Page - NXP Semiconductors |
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17 / 130 page  18 NXP Semiconductors RF Manual 16th edition Recommended products Product highlight: Save energy with the BF11x8 The BF11x8 series are small-signal, RF-switching MOSFETs that can be used to switch RF signals up to 1 GHz. Using the BF11x8 series as an RF switch saves a considerable amount of energy. When a recording device (DVD-R, HDD-R, VCR, DVR) is powered off, viewers can still watch TV, although the antenna is looped via the recording device. Without the BF11x8, the antenna signal is lost. When power to the recording device is on, the BF11x8 is open, so the RF signal travels via the recording device to the TV tuner. When power to the recording device is off, the BF11x8 closes. This ensures that the RF signal is looped through directly to the TV tuner and guarantees TV reception. This saves energy because the recording device can be powered off. Function Product Package Type RF Switch / PLT switch MOSFET 5 V silicon RF switch SOT23 BF1107 SOT143B BF1108 SOT143R BF1108R SOT343 BF1108W SOT343R BF1108WR 3.3 V silicon RF switch SOT143B BF1118 SOT143R BF1118R SOT343 BF1118W SOT343R BF1118WR Function Product Package Type AGC control amplifier MOSFET 2-in-1 with band switch @ 5 V SOT363 BF1215 2-in-1 @ 5 V SOT363 BF1216 5 V SOT343 BF1217 Note: given that there is now an LNA before the MOSFET, the gain of these MOSFETs is made slightly lower and the cross-modulation somewhat higher. That way, the MOSFET is not under AGC even under nominal RF input level. BGU703x evaluation board |
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