AC6925B单声道蓝牙芯片标准原理图

ABCDDCBA+3.3VSD_CMDSD_CLKSD_DATCD10D07VDD4CLK5VSS6D18D3/CS2CMD3WP9D21Sheet11TF1SD-TF+M1MICC26104/224MICDACVDDPowerKey、LEDSPK+SPK-R134.7RR181KVIND5REDD4BLUER143.3KC18224/105C14105/224C13105/224MCUMIC、USB、TF-CARDR116.8KC3NC注：原理图中注释说明设计时需特别注意C5105/NCJ1SPKC4NCD3IN5822VBATVINGND5LIN_R4AGND3LIN_L26+5V1666J2BT13.4V~4.2VLIN_L/RVMCUFM_ANTL81K@100MHZLEDS6SWDACLMICDACVDDVCOMAGNDFMIP+3.3VC202.7PBT_ANTBT_ANTL5NCL30RC16105/225C17105/225VMCUBT_AVDDC1NCC2NCBT_OSCOBT_OSCIY124MBT_OSCOBT_OSCIUSBDPUSBDMSD_CLKSD_CMDSD_DATC15105/224L1180nHC1910pFLIN_L/RMUTELEDADKEY晶振选型：封装：可兼容3225，M49S，HC49S等不同封装要求：稳定性、一致性要好，频偏偏差：±10PPM以内电容：晶振匹配电容位置请预留R154.7RQ18850C/9015CR1610KVBATR17NC+3.3VR622KR73KR89.1KR924KS5P/P/FM_SCANS1PREV/V-/CH-S2NEXT/V+/CH+S3MODE0.4V1.0V0V1.7VADKEYR1047KS4TALK2.2VR19100R放电电阻，请预留GND、AGND在电源入口处短接在一起！C25NC/100P设计注意事项：1、主控所有电源的退耦电容必须靠近芯片放置，退耦电容的回路地必须最短回到该电源地2、蓝牙匹配电路参数以调试结果为准3、对FM要求比较高的客户，请预留FM放大电路，灵敏度可提升2dBu以上。FM信号线铺地间距至少0.6MM以上。4、为保证产品的安全可靠性，电池必须使用带保护板的电池。AB/D1FMANTL4NCVIN2VIN3GND4LX5GND7PVDD9OUTN10SD13AB/D14IN-16LX6IN+15GND8GND1PGND11OUTP12U1CS8326CC10105C8106L24.7uHD1D2C6470uFC7470uFC12105C9106R530KC23104R430KC22104L6FBL7FBC271nFC241nFAB/DMUTER322KC21104C11105R1100KR222KSPK+SPK-VMCUDACLGNDPAUSBDPUSBDMUSB5V+5V1DM2DP3GND465USB1USBVOUT1GND2EN3C-4VIN5C+6U3NC/LP3211SC28NC/105C29NC/225C3010uFR121R/NCVMCUFM_ANTVDDIO12ADC6/PB017SD0DATB/PB315VBAT18ADC9/AUX0R/SD0CLKB/PB513ADC8/AUX0L/SD0CMDB/PB414DACL8DACVSS11DACVDD9USBDP5PC4/SD1CMDA/ADC42PC5/SD1CLKA1BT_OSCI23BT_OSCO24FMIP21VSSIO22BT_AVDD19PA0/MIC/PA4/AUX1R/ADC16PA3/AUX1L/ADC07VCOM10BT_RF20PC3/SD1DATA/ADC103USBDM/ADC114ADC7/PB116U2AC6925B_QSOP24