1 2 3 4 D C3 1uF MIC_BIAS P _ 1 C M I 1 4 0 4 9 3 8 3 7 3 6 3 U1 RTL8763BFR C4 1uF VDD_LDO_AUX2 0 Y E K 5 3 G O L 3 3 4 3 C5 1uF 2 3 1 3 C21=100nF @Capless/Differential mode C21=1uF @Single-end mode C21 100nF C6 1uF VDD_1V8 AOUT_LP AOUT_LN 1 2 3 4 5 6 7 8 9 D N G P E / VREF AVCC_DRV AOUT_LP AOUT_LN AOUT_RN AOUT_RP AVCC VD12_RTX VD33_PA RFIO_IQM 2 _ 2 P 1 _ 2 P 0 _ 2 P 3 3 V H I S A B _ C M I P _ 1 C M I N _ 1 C M I / L X U A P _ 2 C M I / L X U A N _ 2 C M I RTL8763BFR 2 X U A _ O D L LX_AUDIO HV_AUDIO ADP_IN VBAT HV_CORE LX_CORE ADPSO VDDCORE N Y S _ 3 3 D V N Y S _ 2 1 D V I X O X T U O _ G D I 0 _ 1 P 1 _ 1 P N _ T S R _ W H 1 X U A _ O D L 3 3 A P V P0_7 P0_6 30 LX_AUDIO VDD_ADP VDD_VBAT 29 28 27 26 25 LX_CORE C10 1uF 24 23 22 UART_TX 21 UART_RX C23 4.7uF C24 4.7uF C25 4.7uF C26 4.7uF C ANT1 2.4GHz Antenna L3 0R C29 DNP C30 DNP TP4 TEST POINT RF TP. C22 22pF C7 1uF C8 1uF C9 1uF L4 2.7nH C31 1pF R2 0R VDD_1V2 VDD_3V3 10 C32 1.2pF B A Antenna impedance matching circuit. Value depand on Antenna design. Close to antenna. R2(0R) is necessary that able to improve EMI issue. 1 1 2 1 3 1 I X 4 1 O X 5 1 6 1 7 1 SX-2520_40MHz_CL:9pF Frequency Tolerence: +/-10ppm;Frequency Stability over temperature range:15ppm. VDD_3V3 VDD_1V2 0 _ 1 P 1 _ 1 P 8 1 N _ T S R 9 1 0 2 VDD_3V3 VDD_LDO_AUX1 XO 3 4 X1 X2 X1 GND GND 40MHz XI 1 2 C12 1uF C13 1uF C14 1uF C33 100nF C15 1uF C16 1uF LED ADAP_IN Reset MIC1 MEMS Analog Microphone P1_0 P1_1 R3 330R R4 330R LED1 LED-RED LED2 VDD_ADP C17 1uF R6 10k D1 TVS R5 10k RST_N Q1 MMBT3904TT1 MIC_BIAS MIC1_P C18 1uF LED-BLUE Close to TP8. (Option) Type: Single-end mode Close to MIC. C20 3 1uF VDD 1 OUT GND 24 MIC1 AMIC-MEMS Title Size A4 Date: File: 1 2 3 TP8 (+5V) VDD_ADP TP11 SOLDER PAD SOLDER PAD TP9 TP12 VDD_VBAT D SOLDER PAD SOLDER PAD TP1 TP3 VDD_1V2 TEST POINT TEST POINT TP2 Close to RF TP. (TP4) TP14 RST_N VDD_1V8 TEST POINT TEST POINT (Option) Speaker out L1 2.2uH ZWP-0603-2R2K Wirewound Close to IC. VDD_1V8 C27 4.7uF/10V L2 2.2uH TP10 ZWP-0603-2R2K VDD_1V2 Wirewound Close to IC. VDD_1V2 SOLDER PAD C28 4.7uF/10V TP13 SOLDER PAD C11 1uF AOUT_LP AOUT_LN C B Programming pins TP5 UART_RX TEST POINT TP6 TEST POINT TP7 TEST POINT UART_TX LOG P0_6 P0_7 P2_0 Button KEY0 1 3 SW1 SW-TACT 2 4 REALTEK RTL8763BFR reference cricuit (MEMS-Analog MIC) A Number Revision v1.4 16-Oct-2018 C:\Users\User\Desktop\Realtek\Customer\ Sheet of \Reference\RTL8763BFR reference\RTL8763BFR reference\HerTzek\RTL8763BFR reference.ddb Drawn By: 4 禾禾禾