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SI4720 Folha de dados(PDF) 2 Page - Silicon Laboratories |
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SI4720 Folha de dados(HTML) 2 Page - Silicon Laboratories |
2 / 2 page FM Transceiver Copyright © 2007 by Silicon Laboratories 1.18.07 Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders Si4720/21 Broadcast FM Radio Transceiver for Portable Applications Parameter Symbol Test Condition Min Typ Max Unit Frequency Range fRF 76 — 108 MHz Sensitivity (S+N)/N = 26 dB — 2.2 — µV EMF Input IP3 |f2 – f1| > 1 MHz; f0 = 2 x f1 – f2 AGC disabled — 108 — dBµV EMF Adjacent Channel Selectivity ±200 kHz — 50 — dB Alternate Channel Selectivity ±400 kHz — 70 — dB RX Audio Output Voltage 72 80 90 mVrms RX Audio Band Limits ±1.5 dB 30 — 15k Hz RX Audio S/N — 63 — dB RX Audio THD — 0.1 — % Programmable Transmit Output Voltage, TXO (Maximum Voltage) — 115 — dBµV Programmable Transmit Output Voltage, TXO (Minimum Voltage) — 83 — dBµV Transmit Voltage Stability –1 — 1 dB Transmit Voltage Step — 1 2 dB Transmit Channel Edge Power — — –20 dBC Transmit Adjacent Channel Power — –30 –26 dBC Pre/de-emphasis Time Constant FMPE[1:0] = 00 70 75 80 us FMPE[1:0] = 01 45 50 54 us TX Audio SNR — 63 — dB TX Audio THD — 0.1 — % TX Audio Stereo Separation 30 35 — dB TX Sub Carrier Rejection Ratio SCR — –50 –40 dB TX Audio Input Signal Level (0 dB) VAI VIO = 1.8 V — — 0.636 Vpk Selected Electrical Specifications Pin Assignments GND PAD 1 2 3 17 18 19 20 11 12 13 14 6 7 8 9 4 5 16 10 15 RIN/DIO LOUT/DFS ROUTDIO GND RST NC TXO VDD FMI RFGND Package Information Symbol Millimeters Symbol Millimeters Min Nom Max Min Nom Max A 0.50 0.55 0.60 f 2.53 BSC A1 0.00 0.02 0.05 L 0.35 0.40 0.45 b 0.18 0.25 0.30 L1 0.00 — 0.10 c 0.27 0.32 0.37 aaa — — 0.10 D 3.00 BSC bbb — — 0.10 D2 1.60 1.70 1.80 ccc — — 0.08 e 0.50 BSC ddd — — 0.10 E 3.00 BSC eee — — 0.10 E2 1.60 1.70 1.80 |
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