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STD Digital VFO 1.8 main board
Digital VFO 1.8 main board
License
GPL 3.0
License: GPL 3.0Mode:
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Update time：
2023-05-29 11:15:45
Creation time：
2020-01-01 21:26:04
Description
Description
[Project homepage](http://dspview.com/viewtopic.php?p=969#p969)
Si5351+Si570 Digital VFO
Design Drawing
Design Drawing
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | Si5351A-A-GT | U12,U5 | MSOP10 | 2 |
| 2 | 10k | R7***,R1,R3,R4 | 0805 | 4 |
| 3 | 0.1u | C2,C3,C4,C7,C11,C12,C1,C6,C20,C22,C23,C25,C27,C30,C34,C14,C26,C8,C29,C33,C10,C36 | 0805 | 22 |
| 4 | PCF8574AT | U2 | SO-16DW MOD | 1 |
| 5 | Att/Band | P8 | HDR-9X1/2.54 | 1 |
| 6 | Power | P9 | HDR-1X2/2.54 | 1 |
| 7 | Encoder | P11 | HDR-4X1/2.54 | 1 |
| 8 | ARDUINO NANO | U3 | ARDUINO_NANO | 1 |
| 9 | 100uH | L1 | AXIAL-0.5 | 1 |
| 10 | I2C | P14,P3,P15 | HDR-4X1/2.54 | 3 |
| 11 | Control | P12 | HDR-5X1/2.54 | 1 |
| 12 | Tone out | P17 | HDR-1X2/2.54 | 1 |
| 13 | 100 | R2 | 0805 | 1 |
| 14 | 1u | C16 | 0805 | 1 |
| 15 | S-Meter | P18 | HDR-1X2/2.54 | 1 |
| 16 | Ext | P13 | HDR-5X1/2.54 | 1 |
| 17 | SI570 | U1 | OSCILLATOR_SMD_SI570_SI571_HANDSOLDERING | 1 |
| 18 | 100u | C15 | CAP-D5.0XF2.0 | 1 |
| 19 | 3k3 | R6,R5 | 0805 | 2 |
| 20 | 7805 | U4 | TO220H | 1 |
| 21 | AMS1117-3.3 | U14 | SOT-223-3LEAD_TABPIN2 | 1 |
| 22 | 10u | C31 | 1206 | 1 |
| 23 | AT24C32D-SSHM-T | U13 | SOIC-8_150MIL | 1 |
| 24 | 470u | C13 | CAP-D8.0XF3.5 | 1 |
| 25 | CLK_570 | P16 | HDR-1X2/2.54 | 1 |
| 26 | 74LVC1G3157 | U6 | SC-70-6(SOT-363) | 1 |
| 27 | TCXO KT2520K | X2 | SMD-2520_6P | 1 |
| 28 | TXS0108EPWR | U8 | TSSOP-20 | 1 |
| 29 | 26MHz | X3 | OSC-SMD_4P-L2.5-W2.0-BL | 1 |
| 30 | DS3231 | U7 | DS3231 RTC MODULE | 1 |
| 31 | XO 25MHz | X1 | 7050 | 1 |
| 32 | BLM21BD102SN1D | L3,L4,L7,L2 | 0805 | 4 |
| 33 | OUT A | J2 | HDR-TH_6PIN-V-ROW2-COL3-MALE-PITCH2.54 | 1 |
| 34 | OUT B | J1 | HDR-TH_6PIN-V-ROW2-COL3-MALE-PITCH2.54 | 1 |
| 35 | Header-Male-2.54_1x8 | H1 | 210S-1X8P | 1 |
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