DB-tr switch tgc v1 2
About the DB-tr switch tgc v1 2 PCB
DB-tr switch tgc v1 2 is an open source PCB design by echopen, published on GitHub. It is a 2-layer board measuring 63.5 × 52.1 mm, with 57 components from 29 distinct parts.
Other key parts include the LM555N and AD8332. By type, the board carries 26 capacitors, 12 resistors, 8 inductors, 3 connectors, 2 ICs and 2 transformers.
From the project
This daughter board is made from AD8332 component wich is the same than AD8331 but with two TGC inside. The output of the first one is connect to the input of the second so we can acces 90 dB of amplification (on LO mode).
This daughter board is made from AD8332 component wich is the same than AD8331 but with two TGC inside. The output of the first one is connect to the input of the second so we can acces 90 dB of amplification (on LO mode).
The problem of this board is that the output of the VGA1 is connect to the input of the LNA2, but the LNA saturate with a small tension at input (around 250 mV). So if the amplification is wrong set we can have saturation of the TGC. A solution is to set the amplificition correctly or to connect output of VGA1 on input of VGA2, the maximum amplification will be reduce.
Main components on the DB-tr switch tgc v1 2
DB-tr switch tgc v1 2 bill of materials (BOM)
57 components, 29 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM555N MD0100 TI | SOT89-3_(MD0100) | U1 |
| 1 | AD8332 | TSSOP-28(AD8332) | U2 |
| 1 | CONN_01X19 SMA Molex | SMA | P1 |
| 1 | CONN_01X02 CONN_01X19 Molex | Header_pin_angled_1x19 | P2 |
| 1 | CONN_01X02 Johnson / Cinch Connectivity Solutions | Socket_Strip_Angled_1x02 | P3 |
| 1 | OPA625 | SOT-23-6_Handsoldering(OPA625) | AOP1 |
| 1 | JUMPER | Jumper | JP1 |
| 1 | SWITCH_INV | SW_Micro_SPST | SW1 |
| 2 | TRANSFO_6pins | Transfo_6pins(coilcraft) | T1, T2 |
| 1 | 1N4148 BAV99 Fairchild Semiconductor | SOT-23 | D1 |
| 8 | 120n | CMS_0603 | L1, L2, L3, L4, L5, L6, L7, L8 |
| 1 | 10N 10u Vishay | CMS_1206 | C1 |
| 1 | 47N 100n Vishay | CMS_0603 | C2 |
| 1 | 47U 22p Nichicon | CMS_0603 | C3 |
| 1 | 4.7U 18n Nichicon | CMS_1206 | C4 |
| 8 | 4.7U 100n Nichicon | CMS_0603 | C5, C7, C8, C9, C11, C12, C13, C14 |
| 2 | 4.7U 1n Nichicon | CMS_0603 | C6, C10 |
| 9 | 100n | CMS_0603 | C15, C17, C18, C19, C21, C23, C24, C25 +1 |
| 1 | 10u | CMS_1206 | C16 |
| 1 | 18n | CMS_1206 | C20 |
Show 9 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 22p | CMS_0603 | C22 |
| 1 | 2.2K 274 KOA speer | CMS_0603 | R1 |
| 1 | 12K 220 KOA speer | CMS_0603 | R2 |
| 1 | 3.3K 100 KOA speer | CMS_0603 | R3 |
| 1 | 1.8K 100 KOA speer | CMS_0603 | R4 |
| 4 | 237 | CMS_0603 | R5, R6, R11, R12 |
| 1 | 0 | Resistor_TH_common | R7 |
| 1 | 274 | CMS_0603 | R8 |
| 2 | 100 | CMS_0603 | R9, R10 |
DB-tr switch tgc v1 2 design files
The KiCad project lives in the echopen/PRJ-medtec_kit repository on GitHub; these links point at the commit this page was built from.
DB-tr switch tgc v1 2: common questions
How big is the DB-tr switch tgc v1 2 PCB?
The DB-tr switch tgc v1 2 measures 63.5 × 52.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the DB-tr switch tgc v1 2?
57 components, from 29 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the DB-tr switch tgc v1 2 design files?
From the echopen/PRJ-medtec_kit repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the DB-tr switch tgc v1 2 design in my own project?
The repository has no license, so all rights stay with echopen. Use it as a reference, and ask the author before reusing the design.
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Earlier revisions in the repo: DB-tr_switch_tgc_v1_1, DB-tr_switch_tgc_v1