PDF Si4684-A10 Data sheet ( Hoja de datos )

Número de pieza	Si4684-A10
Descripción	FM/DAB/DAB+ RADIO RECEIVER
Fabricantes	Silicon Laboratories
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No Preview Available ! Si4684-A10 SINGLE-CHIP, FM/DAB/DAB+ RADIO RECEIVER Features  Worldwide FM band support  Advanced audio DSP processing (76–108 MHz)  Complete on-chip source decode  Advanced RDS/RBDS decoder  I2S digital audio out with ASRC  DAB, DAB+ Band III support (168–240 MHz)  Integrated 97 dB stereo audio DAC  Supports WorldDMB Receiver Profiles 1 and 2  OFDM channel demodulator  Concurrent I2S / L-R stereo audio out  Full range of analog and digital Simultaneous decoding of up to 4 service components signal quality metrics Seamless dynamic multiplex  Fully-integrated VCO / PLL / reconfiguration synthesizer  Integrated SRAM supporting time  Fully-integrated advanced AGC and frequency de-interleaving and alignment  Advanced seek functionality  SPI, I2C control interfaces  FM sensitivity = 0.7 µV  DAB sensitivity = –101 dBm  WLCSP and QFN packages Applications  Mobile phones and tablets  Clock and tabletop radios  Personal navigation devices  Stereo boomboxes  Mini/micro systems  Docking stations Ordering Information: See page 35. Patents pending Description The Si4684 single-chip digital receiver is one member of a family of 100% CMOS digital radio broadcast receiver ICs from Silicon Labs. The Si46xx family provides revolutionary advances in size, power consumption, and performance to enable high-volume, cost-sensitive multimedia products to incorporate digital broadcast features. The family offers all-in-one, ultra-low power, multi-band digital broadcast receivers to support global analog and digital radio standards including AM, SW, LW, FM, FM RDS, HD, DAB, DAB+, DMB, and DRM(30). Rev. 1.0 7/13 Copyright © 2013 by Silicon Laboratories Si4684-A10 1 page Si4684-A10 Table 2. DC Characteristics1,2 (TAMB = 25 °C, VA = VIO = VMEM = VCORE = 1.8 V) Parameter Symbol Test Condition Min Typ Max Unit RESET VA VCORE VMEM VIO RSTB pin = low — 0.5 5 — 18 — 18 — 0.5 3 μA μA μA μA STARTUP VA RSTB pin = high — 1— μA VCORE VMEM VIO — 8.5 — — 1— — 160 — mA mA μA OPERATIONAL—Analog FM Mode VA Analog FM reception — 19.1 22.7 mA VCORE — 7.4 9.1 mA VMEM — 4.8 6.2 mA VIO — 0.1 0.1 mA OPERATIONAL—DAB/DAB+ Mode3 VA DAB/DAB+ reception — 23.9 25.0 mA VCORE — 14.0 17.0 mA VMEM — 9.0 13.3 mA VIO — 0.3 0.6 mA Notes: 1. Power states are described in Section “6.5. Reset Timing and Power States” . 2. Characteristics apply to firmware FM 2.0.10 and firmware DAB 1.0.6. For later firmware versions see “Si468x Data Sheet Addendum”. Parameters are tested in production unless otherwise stated. 3. Guaranteed by characterization. 4. For input pins RSTB, SMODE, SCLK, SSB, MOSI, NVMISO, DCLK and DFS. 5. For output pins INTB, MISO, NVSBB, NVSCLK, NVMOSI and DOUT. Rev. 1.0 5 5 Page Si4684-A10 Table 7. Analog FM Receiver Characteristics1,2,3 (TAMB = –40 to 85 °C, VA = 1.71 to 2.0 V, VIO = 1.62 to 3.6 V, VMEM = VCORE = 1.62 to 2.0 V) Parameter Symbol Test Condition Min Typ Max Unit Input Frequency Audio Sensitivity4 RDS Sensitivity4,5 Input IP35 Image Rejection5 AM Suppression5 Adjacent Channel Selectivity fRF 76 — 108 MHz SINAD = 26 dB — 0.7 1.0 μV FDEV = 2 kHz, RDS BLER < 5%, —4 Analog audio output mode — μV \|f2 – f1\| > 2 MHz, f0 = 2 x f1 – f2, 90 96 — dBμV AGC is disabled 35 45 — dB FDEV = 22.5 kHz ±200 kHz 53 58 35 50 — — dB dB Alternate Channel Selectivity ±400 kHz 35 43 — dB Audio Output Voltage Audio Output L/R Imbalance Audio Frequency Response Low5 Audio Frequency Response High5 FDEV = 22.5 kHz FDEV = 75 kHz ±3 dB ±3 dB 48 52 –1 — —— 15 — 55 mVrms 1 dB 30 Hz — kHz Audio Stereo Separation Audio Mono SNR Audio Stereo SNR5 Audio Mono THD Audio Mono SINAD De-emphasis Time Constant5 Seek/Tune Time5 FDEV = 75 kHz 35 45 — FDEV = 22.5 kHz 62 68 — FDEV = 22.5 kHz — 60 — FDEV = 75 kHz — 0.1 0.5 FDEV = 75 kHz 60 — FM_DEEMPHASIS = 75 μs 70 75 — 80 dB dB dB % dB μs FM_DEEMPHASIS = 50 μs 45 50 54 μs Tune Mode = 0 (FM Analog mode) — — 60 ms/ch RSSI Offset RF Input levels of 0 and 60 dBμV –3 — 3 dB Notes: 1. Characteristics apply to firmware FM 2.0.10. For later firmware versions see “Si468x Data Sheet Addendum”. Parameters are tested in production unless otherwise stated. 2. Test Setup and Test Conditions are available in “AN651: Si46xx Evaluation Board Test Procedure”. Tested at RF = 98.0 MHz. 3. To ensure proper operation and receiver performance, follow the guidelines in “AN650: Si46xx Schematic and Layout Guide”. Silicon Laboratories will evaluate schematics and layouts for qualified customers. 4. Signal generator reading. Voltage at VHF pin typically 6 dB higher. 5. Guaranteed by characterization. Rev. 1.0 11 11 Page

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