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CXA1851N 데이터시트(PDF) 2 Page - Sony Corporation |
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CXA1851N 데이터시트(HTML) 2 Page - Sony Corporation |
2 / 12 page —2— CXA1851N Pin Description Typical pin voltage (V) 1 GND 0.0 GND pin for the down converter. 2 RF BYPASS 1.1 MIX input by-pass pin for the down converter. 3 RF INPUT 0.9 RF input pin for the down converter. Because of high impedance, a 4.7 nH external chip inductor should be used for impedance matching. 4 PEAKING 0.12 Emitter pin for the low-noise OUT amplifier. Connect an approximate- ly 3 pF chip capacitor and an approximately 22 Ω chip resistor in series to the GND. 5 P/S 0 to 4.5 Power saving control pin for the (for DOWN down converter. CONV.) OFF when Vp/s ≤1.0 V; ON when Vp/s ≥1.8 V 6 P/S 0 to 4.5 Power saving control pin for the up (for UP converter. CONV.) OFF when Vp/s ≤1.0 V; ON when Vp/s ≥1.8 V 7VCC 2.7 to 4.5 Power supply for the up converter. (for Up CONV.) 8 RF OUTPUT 2.7 RF output pin for the up converter. (Vcc=2.7V) Connect this pin to the Pin 7 power supply via the 15 nH chip inductor. 9 GND 0.0 GND pin for the up converter RF amplifier. REG REG 2 3 4 5 6 REG 8 Pin No. Symbol Equivalent circuit Description |
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