Pi TX 35W PA V2

M0LTE·pi-transceiver·electronics/PA_Board_V2/Pi_TX_35W_PA_V2.kicad_pcb

About the Pi TX 35W PA V2 PCB

Pi TX 35W PA V2 is an open source Microchip SAM PCB design by M0LTE, published on GitHub. It is a 4-layer board measuring 100 × 100 mm, with 161 components from 66 distinct parts.

Its main chip is the ATSAMD21E18A-A, from the Microchip SAM family. Other key parts include the PSA4-5043+, LM75B, 74LV1T34, LMR51420 and MCP4725. By type, the board carries 54 capacitors, 50 resistors, 17 diodes, 13 ICs, 10 inductors and 7 connectors.

It belongs with the rf & radio designs in this gallery, and the repository also holds 1 earlier revision of it.

From the project

An attempt to build a complete ham radio transceiver around a Raspberry Pi

Main components on the Pi TX 35W PA V2

PSA4-5043+LM75B 74LV1T34 LMR51420 MCP4725 TPS22810DBV AP2204K-ADJ INA219AXD TLV70233 LM2904 ATSAMD21E18A-A

Pi TX 35W PA V2 bill of materials (BOM)

161 components, 66 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
2	PSA4-5043+	SOT-343_SC-70-4	U1, U3
1	LM75B	SOIC-8_3.9x4.9mm_P1.27mm	U2
2	74LV1T34	SOT-353_SC-70-5	U5, U15
1	LMR51420	SOT-23-6	U6
1	MCP4725	SOT-23-6	U7
1	TPS22810DBV	SOT-23-6	U8
1	AP2204K-ADJ	SOT-23-5	U9
1	INA219AXD INA219AxD	SOIC-8_3.9x4.9mm_P1.27mm	U10
1	TLV70233	SOT-23-5	U11
1	LM2904	SOIC-8_3.9x4.9mm_P1.27mm	U12
1	ATSAMD21E18A-A	TQFP-32_7x7mm_P0.8mm	U13
1	AOD4185	TO-252-2	Q1
1	BC848W	SOT-323_SC-70	Q2
4	C496550 Conn_Coaxial	SMA_Samtec_SMA-J-P-X-ST-EM1_EdgeMount	J1, J5, J7, J8
1	CONN_01X05 Conn_01x05	JST_PH_S5B-PH-SM4-TB_1x05-1MP_P2.00mm_Horizontal	J3
1	CONN_01X06 Conn_01x06	JST_PH_S6B-PH-SM4-TB_1x06-1MP_P2.00mm_Horizontal	J6
1	C136000 USB_B_Micro	USB_Micro-B_Molex-105017-0001	J9
1	C910830 1A	Fuse_1206_3216Metric	F1
3	150MA 150mA	Fuse_0805_2012Metric	F2, F3, F4
2	150mA	Fuse_0805_2012Metric	F5, F6

Show 46 more

Qty	Part	Footprint	Refs
1	G6E	Relay_SPDT_Omron_G6E	K1
1	SW_Push	Panasonic_EVQPUK_EVQPUB	SW1
3	SP0503BAHT	SOT-143	D1, D5, D8
4	LRB751S	D_SOD-523	D2, D3, D11, D12
3	MBR0540	D_SOD-123	D4, D7, D9
3	1SS400	D_SOD-523	D6, D10, D17
1	MHS171UBCT	MHS171	D13
2	SK6812	SK6812SIDE-A-RVS	D14, D15
1	MHS171CRCT	MHS171	D16
5	1u	L_0805_2012Metric	L1, L2, L11, L12, L13
1	200NH 200nH	L_1812_4532Metric	L4
1	4.7UH 4.7uH	L_7.3x7.3_H3.5	L5
2	1.5U 1.5u	L_0805_2012Metric	L8, L10
1	C98298 L_Ferrite	L_0603_1608Metric	L9
5	100P 100p	C_0603_1608Metric	C1, C7, C11, C16, C59
21	100N 100n	C_0603_1608Metric	C2, C4, C8, C10, C14, C17, C18, C24 +13
4	330P 330p	C_0603_1608Metric	C3, C5, C9, C64
2	22U 22u	C_0805_2012Metric	C6, C31
1	22U 22u	CP_EIA-7343-43_Kemet-X	C13
1	100N 1u	C_0603_1608Metric	C21
1	2.2U 2.2u	C_0603_1608Metric	C22
1	C377773 2.2u 50V	C_0805_2012Metric	C23
1	C15849 1u 50V	C_0603_1608Metric	C26
6	1n	C_0603_1608Metric	C35, C36, C43, C47, C50, C51
5	1u	C_0603_1608Metric	C37, C40, C44, C52, C57
2	10U 10u	C_0603_1608Metric	C41, C49
1	4N7 4n7	C_0603_1608Metric	C53
3	10N 10n	C_0603_1608Metric	C55, C56, C60
10	4K7 4k7	R_0603_1608Metric	R1, R5, R6, R16, R18, R24, R25, R28 +2
2	18R	R_0603_1608Metric	R2, R49
4	300R	R_0603_1608Metric	R3, R4, R48, R50
2	10R	R_0603_1608Metric	R7, R8
1	10M 10m	R_2816_7142Metric	R9
10	10K 10k	R_0603_1608Metric	R10, R11, R15, R19, R26, R27, R33, R36 +2
1	1K2 1k2	R_0603_1608Metric	R12
1	470R	R_0603_1608Metric	R13
3	1k	R_0603_1608Metric	R14, R42, R44
1	22.1K 22.1k	R_0603_1608Metric	R17
1	162K 162k	R_0603_1608Metric	R20
1	47K 47k	R_0603_1608Metric	R21
4	150R	R_0603_1608Metric	R22, R23, R38, R40
4	100K 100k	R_0603_1608Metric	R29, R31, R32, R34
2	330R	R_0603_1608Metric	R30, R37
1	49.9R	R_0603_1608Metric	R39
1	49.9K 49.9k	R_0603_1608Metric	R41
1	1M	R_0603_1608Metric	R43

Pi TX 35W PA V2 design files

The KiCad project lives in the M0LTE/pi-transceiver repository on GitHub; these links point at the commit this page was built from.

Pi TX 35W PA V2: common questions

What microcontroller does the Pi TX 35W PA V2 use?

The Pi TX 35W PA V2 is built around the ATSAMD21E18A-A, from the Microchip SAM family.

How big is the Pi TX 35W PA V2 PCB?

The Pi TX 35W PA V2 measures 100 × 100 mm, has 4 copper layers and is 4.69 mm thick.

How many components are on the Pi TX 35W PA V2?

161 components, from 66 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 Pi TX 35W PA V2 design files?

From the M0LTE/pi-transceiver repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Pi TX 35W PA V2 design in my own project?

The repository has no license, so all rights stay with M0LTE. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Pi TX 35W PA V2 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Microchip SAM firmware against it before you order a PCB.