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STD jlm-composite-amp-2-preamp
jlm-composite-amp-2-preamp
License
Public Domain
License: Public Domain- 0
Update time：
2023-02-24 09:07:31
Creation time：
2021-02-06 19:17:51
Description
Description
ESP32 driven preamp, with XLR and bluetooth inputs and symmetrical outputs, mean to drive the jlm-commposite-amp
Design Drawing
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | BTN | BTN | HDR-2X1/2.54 | 1 |
| 2 | 1u | C24,C1 | 0805 | 2 |
| 3 | 100nF | C25,C49,C92,C93,C94,C3,C5,C6,C7,C8,C26,C29,C30,C31,C41,C42,C50,C53,C56,C57,C60,C61,C64,C65,C83,C86,C87,C48,C54,C55,C66,C67,C68,C69,C70,C77,C78 | 0603 | 37 |
| 4 | DISPLAY | DISPLAY | DIP-1X5P-2.54MM-M | 1 |
| 5 | ENCODER1 | ENCODER1 | 210S-1X4P | 1 |
| 6 | ENCODER2 | ENCODER2 | 210S-1X4P | 1 |
| 7 | INPUT_SEL | INPUT_SEL | DIP-1X5P-2.54MM-M | 1 |
| 8 | 220Ω | L2,L8,L3 | L0603 | 3 |
| 9 | PROG | PROG | DIP-1X5P-2.54MM-M | 1 |
| 10 | S8050_C181158 | Q1,Q2 | SOT-23-3_L2.9-W1.6-P1.90-LS2.8-BR | 2 |
| 11 | 10k | R11,R14,R15,R34,R39,R43,R44,R45,R46,R48,R49,R50,R51,R52,R53,R54 | R_0805_HANDSOLDERING | 16 |
| 12 | 4.7k | R35,R36 | R_0805_HANDSOLDERING | 2 |
| 13 | 100 | R40,R41,R10,R12,R13,R16 | RES-SMD_L3.5-W1.5 | 6 |
| 14 | EN | SW1 | SW-TH_4P-L6.0-W6.0-P4.50-LS6.5 | 1 |
| 15 | BOOT | SW2 | SW-TH_4P-L6.0-W6.0-P4.50-LS6.5 | 1 |
| 16 | TEMP | TEMP | HDR-2X1/2.54 | 1 |
| 17 | ESP-32S | U15 | WIFIM-SMD_ESP-32S | 1 |
| 18 | 10u | C4,C9 | 0805 | 2 |
| 19 | 300pF | C10,C11,C21,C23 | C0603 | 4 |
| 20 | 33nF | C12,C14,C17,C20 | C1206 | 4 |
| 21 | 1.2nF | C13,C15,C16,C18,C37,C38,C39,C40 | C0603 | 8 |
| 22 | 47u | C19,C72,C76 | CP_6.3X11MM | 3 |
| 23 | 4.7uF | C27,C28,C51,C52,C58,C59,C62,C63,C71,C73,C75,C79,C80,C97,C99 | 0805 | 15 |
| 24 | 2.2nF | C32,C47 | C0805 | 2 |
| 25 | 100pF | C33,C34,C35,C36,C43,C44,C45,C46 | C0603 | 8 |
| 26 | INPUT | INPUT | DIP-1X5P-2.54MM-M | 1 |
| 27 | OUTPUTA | OUTPUTA | HDR-3X1/2.54 | 1 |
| 28 | OUTPUTB | OUTPUTB | HDR-3X1/2.54 | 1 |
| 29 | 5.1K | R1,R2,R5,R6,R8,R9,R17,R18,R19,R20,R21,R22,R23,R24,R25,R26,R27,R28,R29,R30 | RES-SMD_L3.5-W1.5 | 20 |
| 30 | 47 | R3,R4,R7,R31,R32,R33 | R0603 | 6 |
| 31 | 22k | R37,R38,R42,R47 | MINI_MELF-0204W | 4 |
| 32 | OPA1632DR | U2,U3,U5,U7 | SOIC8 | 4 |
| 33 | CS4272-CZZR | U11 | SSOP-28 | 1 |
| 34 | OPA2277UA | U6 | SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL | 1 |
| 35 | 0.33u | C2,C22,C74 | 0805 | 3 |
| 36 | 10uH | L1,L4,L5,L6,L7 | L0805 | 5 |
| 37 | Power | POWER | HDR-3X1/2.54 | 1 |
| 38 | ZLDO1117G33TA | U1 | SOT-223-4_L6.5-W3.5-P2.30-LS7.0-BR | 1 |
| 39 | CJ78L12 | U4 | SOT-89 | 1 |
| 40 | CJ79L12 | U10 | SOT-89 | 1 |
| 41 | ZLDO1117G50TA | U13 | SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR | 1 |
| 42 | L7812CV | U14 | TO-220-3_L10.0-W4.5-P2.54-T | 1 |
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