pcb_work
indare
Components (53)
| Reference | Value | Description |
|---|---|---|
| U201 | REC10K-2415DAW/H2 | Mean Well DKMW20F-15 isolated DC/DC, 9-36Vin, ±15V/±660mA, DIP 1in x 1in, Cout 650uF/rail; DS datasheets/MeanWell_SKMW20_DKMW20.pdf |
| U202 | LM7809 +9V | |
| U401 | Pico 2 / RP2350 | |
| U402 | PT2314-D | |
| U403 | BP5293-50 +5V | |
| U601,U701,U801,U901,U1001,U1101,U1201,U1301,U1401,U1501 | TMUX7612 | 4ch SPST; ch1/2=input L/R, ch3/4=output L/R |
| U_IO301 | MCP23017 | I2C GPIO expander; 10 SEL lines |
| AMP601,AMP701,AMP801,AMP901,AMP1001,AMP1101,AMP1201,AMP1301,AMP1401,AMP1501 | NE5532 / DIP-8 compatible | Socketed dual op amp under test |
| C201,C205,C207 | 47u | |
| C202,C204,C206,C208,C402 | 0.1u | |
| C203 | 10u | |
| C401 | 22u | |
| C403,C404,C410,C411 | 100n | |
| C405-C407,C409 | 2.2u | |
| C408,C412 | 2.7n | |
| C601,C604,C701,C704,C801,C804,C901,C904,C1001,C1004,C1101,C1104,C1201,C1204,C1301,C1304,C1401,C1404,C1501,C1504 | 2.2uF film | L output coupling (before switch),R output coupling (before switch) |
| C602,C605,C702,C705,C802,C805,C902,C905,C1002,C1005,C1102,C1105,C1202,C1205,C1302,C1305,C1402,C1405,C1502,C1505 | 100nF film | L input film coupling,R input film coupling |
| C603,C606,C703,C706,C803,C806,C903,C906,C1003,C1006,C1103,C1106,C1203,C1206,C1303,C1306,C1403,C1406,C1503,C1506 | 10uF | L input electrolytic coupling,R input electrolytic coupling |
| C607-C610,C707-C710,C807-C810,C907-C910,C1007-C1010,C1107-C1110,C1207-C1210,C1307-C1310,C1407-C1410,C1507-C1510,C_IO301 | 100nF | MCP23017 decoupling,op amp V+ local decoupling,op amp V- local decoupling,switch VDD local decoupling,switch VSS local decoupling |
| C_BULK_N301,C_BULK_P301 | 100uF 35V | rail bulk at board entry |
| D401 | DEST GP14 | |
| D402 | DEST GP15 | |
| D403 | 12V panel LED | |
| D404 | 1N5817 | |
| ENC401 | EC11 ENC_CH | |
| ENC402 | EC11 ENC_BASS | |
| ENC403 | EC11 ENC_TREBLE | |
| F201 | 3A slow | |
| J201 | +15/-15/A_GND out | |
| J202 | PD module in (1=GND 2=+12V) | |
| J203 | VCC_TONE OUT (1=A_GND 2=9V) | |
| J_CTRL301 | I2C SDA/SCL/3V3/D_GND | I2C from ControlPanel |
| J_HP501 | to Audio HP Buffer | |
| J_LINE501 | LINE OUT | |
| J_OLED401 | 2.42 OLED I2C GND/3V3/SCL/SDA | |
| J_OUT301 | AMP_SEL OUT L/R | Selected amp out to OutputStage |
| J_PWR301 | +15V / A_GND / -15V | Supply in from PowerModule |
| J_RAIL501 | RAIL IN | From PowerModule J201: +12V / A_GND / -12V (relays switch rails only) |
| J_TONE301 | TONE IN L/R | Tone stage output in |
| R401,R402 | 4.7k | |
| R403,R404,R408,R409,R601,R607,R701,R707,R801,R807,R901,R907,R1001,R1007,R1101,R1107,R1201,R1207,R1301,R1307,R1401,R1407,R1501,R1507 | 1k | L non-inverting bias,R non-inverting bias |
| R405,R406 | 10k | |
| R407 | 5.6k | |
| R410-R415 | 2.4k | |
| R602,R608,R702,R708,R802,R808,R902,R908,R1002,R1008,R1102,R1108,R1202,R1208,R1302,R1308,R1402,R1408,R1502,R1508 | 47R | L output isolation,R output isolation |
| R603,R605,R609,R611,R703,R705,R709,R711,R803,R805,R809,R811,R903,R905,R909,R911,R1003,R1005,R1009,R1011,R1103,R1105,R1109,R1111,R1203,R1205,R1209,R1211,R1303,R1305,R1309,R1311,R1403,R1405,R1409,R1411,R1503,R1505,R1509,R1511 | 220k | L input pulldown (after switch),L output pulldown (before switch),R input pulldown (after switch),R output pulldown (before switch) |
| R604,R606,R610,R612,R704,R706,R710,R712,R804,R806,R810,R812,R904,R906,R910,R912,R1004,R1006,R1010,R1012,R1104,R1106,R1110,R1112,R1204,R1206,R1210,R1212,R1304,R1306,R1310,R1312,R1404,R1406,R1410,R1412,R1504,R1506,R1510,R1512 | 20k | L feedback Rf; default 20k = GAIN 2,L gain resistor Rg; GAIN=1+Rf/Rg,R feedback Rf; default 20k = GAIN 2,R gain resistor Rg; GAIN=1+Rf/Rg |
| RV501 | A50k Dual HP | |
| RV502 | A50k Dual LINE | |
| SW401 | DEST sense (3PDT 3rd pole) | |
| SW402 | PWR SW | |
| SW501 | DEST L (PHONE/MUTE/LINE) | |
| SW502 | DEST R (PHONE/MUTE/LINE) |