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STD BTM625/307/308 TestBoard
License: null
Mode: Editors' pick
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Update time：
2022-05-16 09:48:40
Creation time：
2021-10-29 11:50:57
Description
This board is used for Bluetooth Audio electronics developpment
Design Drawing
schematic diagram
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BTM & I/Os
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ESP & I/Os
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3V3 PowerSupply
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | THROUGHTP | 1V8,AIO4,AIO5,B1,B2,B3,B4,B5,B6,B7,B15,B16,B17,B18,B19,B20,B21,B52,B53,B54,B60,B61,BT_RF,LED0,LED1,LED2,LINE_LN,LINE_LP,LINE_RN,LINE_RP,SPKL_LN,SPKL_LP,SPKR_RN,SPKR_RP,USB_DN,USB_DP,VBAT_SNS,VCHG,3V3,BAT_DIV_E26,E0,E2,E4,E5,E12,E13,E14,E16,E17,E19,E21,E22,E23,E25,E27,E32,E33,E34,E35,ERX,ESP_EN,ESP_RF,ETX,MFB_E15,SCTRL_E18,PG | 1.2MM HOLE 2MM PAD | 66 |
| 2 | 100nF | C11 | 0805 | 1 |
| 3 | 10uF | CAP_IN_LN,CAP_IN_LP,CAP_IN_RN,CAP_IN_RP | 0805 | 4 |
| 4 | 1uF | CAP_LN,CAP_LP,CAP_RN,CAP_RP | C0603 | 4 |
| 5 | SJR-BTM525 | U1 | WIRELM-SMD_SJR-BTM525 | 1 |
| 6 | 270pF | C1,C2 | C0603 | 2 |
| 7 | 1uF | C3 | 0603 | 1 |
| 8 | 0.1uF | C4,C5,C6,C10 | 0603 | 4 |
| 9 | 10nF | C8 | C0603 | 1 |
| 10 | 22pF | C9,C13 | C0603 | 2 |
| 11 | 3.3nF | C12 | C0603 | 1 |
| 12 | 20kΩ | R2 | R0603 | 1 |
| 13 | ESP32-U4WDH | U3 | QFN-48_L5.0-W5.0-P0.35-BL-EP3.7 | 1 |
| 14 | 40MHz | X1 | OSC-SMD_4P-L3.2-W2.5-BL_SIT8008BI | 1 |
| 15 | JST 2.5 | BATT,MFB,POW_3V3,VBAT | CONN-TH_B2B-XH-A-LF-SN | 4 |
| 16 | 2pF | C20 | C0603 | 1 |
| 17 | 2.7pF | C21 | C0603 | 1 |
| 18 | FFH12705-D06S1004K6M | H1 | HDR-SMD_6P-P1.27-V-F-R2-C3-LS4.5 | 1 |
| 19 | 2.7nH | L2 | L0603 | 1 |
| 20 | JST 1.5 | LED_0,LED_1,LED_2 | CONN-TH_A1501WV-2P | 3 |
| 21 | R_LED | RDIV+,RDIV- | R0603 | 2 |
| 22 | LED0 | RLED0 | R0603 | 1 |
| 23 | LED1 | RLED1 | R0603 | 1 |
| 24 | LED2 | RLED2 | R0603 | 1 |
| 25 | 10K | RMFB | R0603 | 1 |
| 26 | MICRO_USB_B | USB2 | MICRO-USB-SMD_10118193-0001LF | 1 |
| 27 | 22uF | C7,C38 | C0603 | 2 |
| 28 | 100nF | C37 | C0603 | 1 |
| 29 | 2.2uH | L6 | L1008 | 1 |
| 30 | 619K | R1,R14 | R0805 | 2 |
| 31 | 137K | R15 | R0805 | 1 |
| 32 | TPS629210 | U4 | TPS629210 SOT-583 | 1 |
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