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SI4741 데이터시트(PDF) 2 Page - Silicon Laboratories |
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SI4741 데이터시트(HTML) 2 Page - Silicon Laboratories |
2 / 2 page AM/FM Receiver Copyright © 2008 by Silicon Laboratories 10.23.08 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. Si4740/41/42/43/44/45 Automotive AM/FM Radio Receiver Selected Electrical Specifications1 (VDD = 2.7 to 5.5 V, VIO = 1.5 to 3.6 V, TA = –40 to 85 °C) Parameter Test Condition Min Typ Max Unit FM Input Frequency 64 — 108 MHz Sensitivity (S+N)/N = 26 dB — 2 — µV EMF RDS Sensitivity f = 2 kHz, RDS BLER < 5% — 8 — µV EMF Audio S/N (Mono)2,3 fMOD = 1 kHz, f = 22.5 kHz, VEMF = 60 dBµVEMF — 63 — dB Audio THD (Mono)2,3 fMOD = 1 kHz, f = 75 kHz, VEMF = 60 dBµVEMF — 0.1 — % Input IP3 f1 = 4000 kHz; f2 = 8000 kHz — 105 — dBµV EMF Audio Output Voltage — 80 — mVrms Adjacent Channel Selectivity ±200 kHz — 50 — dB Alternate Channel Selectivity ±400 kHz — 70 — dB AM Suppression4 m = 0.3; f = 22.5 kHz; f RF = 76 to 108 MHz; Measured at VEMF = 60 dBµVEMF — 55 — dB Audio Stereo Separation4 fRF = 76 to 108 MHz; Measured at VEMF = 60 dBµVEMF; f = 75 kHz — 45 — dB Supply Voltage5 3 — 3.6 V Supply Current5 — 26 — mA AM Input Frequency 520 — 1710 kHz Sensitivity (S+N)/N = 26 dB — 28 — µV EMF Audio S/N4,6 30% modulation, fMOD =1 kHz, RF level = 74 dBµV EMF; f = 22.5 kHz — 53 — dB Audio THD4,6 30% modulation, fMOD =1 kHz, RF level = 74 dBµV EMF; f = 22.5 kHz — 0.3 — % Input IP37 f1 = 40 kHz; f2 = 80 kHz — 112 — dBµV Audio Output Voltage4 54 60 66 mVrms Adjacent Channel Selectivity ±10 kHz — 40 — dB Alternate Channel Selectivity ±20 kHz — 60 — dB Notes: 1. Specifications refer to Si474x application circuit input. 2. BAF = 300 Hz to 15 kHz. 3. fRF = 76 to 108 MHz. 4. FMOD = 1 kHz, 75 µs de-emphasis, MONO = enabled, and L = R unless noted otherwise. 5. Applies to both FM and AM modes. 6. AGC is disabled. 7. Specification refers to Si474x input. Pin Assignments GND PAD 1 2 3 21 22 23 24 14 15 16 17 7 8 9 10 4 5 20 13 11 19 18 12 6 DFS DOUT LOUT ROUT AMI FMI NC GND RFGND AGC1 VDD GND Symbol Millimeters Min Nom Max A 0.80 0.85 0.90 A1 0.00 0.02 0.05 b 0.18 0.25 0.30 D 4.00 BSC D2 2.00 2.10 2.20 e 0.50 BSC E 4.00 BSC E2 2.00 2.10 2.20 L 0.30 0.40 0.50 aaa — — 0.10 bbb — — 0.10 ccc — — 0.08 ddd — — 0.10 eee — — 0.10 4x4x0.85 mm 24-pin QFN Package Information |
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