Dac line output eval

birdybro·FPGA_Amp·hardware/kicad/dac_line_output_eval_rev_a/dac_line_output_eval.kicad_pcb

Dac line output eval PCB layout, top view — open source board by birdybro

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About the Dac line output eval PCB

Dac line output eval is an open source PCB design by birdybro, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 112 × 72 mm, with 77 components from 46 distinct parts.

Other key parts include the PCM5242RHBR, TPS7A2033PDBVR_ANALOG, TPS7A2033PDBVR_DIGITAL, SN74LVC1G08DBVR_RELAY_INTERLOCK and SN74LVC1G08DBVR_XSMT_INTERLOCK. By type, the board carries 28 resistors, 24 capacitors, 9 diodes, 5 ICs, 5 connectors and 3 transistors.

It belongs with the audio designs in this gallery.

From the project

FPGA based audiophile phono preamp and amp integrated unit idea. WIP

This directory contains a routed four-layer KiCad 10 evaluation board for the stereo FPGA-to-line-output path. It is a concrete bench prototype, not a production fabrication release and not evidence of measured audio performance. Open daclineoutputeval.kicadpro in KiCad 10. KiCad does not live-reload files changed by the generator, so close/reopen the board after regeneration.

Main components on the Dac line output eval

PCM5242RHBR TPS7A2033PDBVR_ANALOG TPS7A2033PDBVR_DIGITAL SN74LVC1G08DBVR_RELAY_INTERLOCK SN74LVC1G08DBVR_XSMT_INTERLOCK

Dac line output eval bill of materials (BOM)

77 components, 46 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
1	PCM5242RHBR	Texas_RHB0032E_VQFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm_ThermalVias	U1
1	TPS7A2033PDBVR_ANALOG	SOT-23-5	U2
1	TPS7A2033PDBVR_DIGITAL	SOT-23-5	U3
1	SN74LVC1G08DBVR_RELAY_INTERLOCK	SOT-23-5	U4
1	SN74LVC1G08DBVR_XSMT_INTERLOCK	SOT-23-5	U5
3	MMBT3904	SOT-23	Q1, Q2, Q3
1	DAC_AUDIO	PinHeader_2x05_P2.54mm_Vertical	J1
1	DAC_CONTROL	PinHeader_2x05_P2.54mm_Vertical	J2
1	POWER_INPUT	PinHeader_2x04_P2.54mm_Vertical	J3
1	BALANCED_PANEL_HARNESS_EVT	JST_XH_B8B-XH-A_1x08_P2.50mm_Vertical	J4
1	RCA_PANEL_HARNESS_EVT	JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical	J5
1	G6K-2F-Y-5V_FAIL_OPEN_1	Relay_DPDT_Omron_G6K-2F-Y	K1
1	G6K-2F-Y-5V_FAIL_OPEN_2	Relay_DPDT_Omron_G6K-2F-Y	K2
1	G6K-2F-Y-5V_FAIL_OPEN_3	Relay_DPDT_Omron_G6K-2F-Y	K3
3	1N4148W_FLYBACK	D_SOD-123	D1, D2, D3
6	PESD5V0X1BCL_EVT	D_SOD-882	D4, D5, D6, D7, D8, D9
1	10NF_X7R 10nF_X7R	C_0603_1608Metric	C1
1	100NF_X7R_LDOO 100nF_X7R_LDOO	C_0402_1005Metric	C2
1	2.2UF_X7R_FLY 2.2uF_X7R_FLY	C_0603_1608Metric	C3
1	2.2UF_X7R_VNEG 2.2uF_X7R_VNEG	C_0603_1608Metric	C4

Show 26 more

Qty	Part	Footprint	Refs
1	100NF_X7R_AVDD 100nF_X7R_AVDD	C_0402_1005Metric	C5
1	10UF_X5R_AVDD 10uF_X5R_AVDD	C_0805_2012Metric	C6
1	100NF_X7R_CPVDD 100nF_X7R_CPVDD	C_0402_1005Metric	C7
1	2.2UF_X7R_CPVDD 2.2uF_X7R_CPVDD	C_0603_1608Metric	C8
1	100NF_X7R_DVDD 100nF_X7R_DVDD	C_0402_1005Metric	C9
1	10UF_X5R_DVDD 10uF_X5R_DVDD	C_0805_2012Metric	C10
2	100NF_X7R 100nF_X7R	C_0402_1005Metric	C11, C12
2	1NF_C0G_DIFF 1nF_C0G_DIFF	C_0603_1608Metric	C20, C21
2	2.2NF_C0G_SE 2.2nF_C0G_SE	C_0603_1608Metric	C22, C23
2	1UF_X7R_LDO_IN 1uF_X7R_LDO_IN	C_0805_2012Metric	C30, C33
2	2.2UF_X7R_LDO_OUT 2.2uF_X7R_LDO_OUT	C_0805_2012Metric	C31, C34
1	10UF_X5R_ANALOG_BULK 10uF_X5R_ANALOG_BULK	C_0805_2012Metric	C32
1	10UF_X5R_DIGITAL_BULK 10uF_X5R_DIGITAL_BULK	C_0805_2012Metric	C35
1	10UF_X5R_RELAY_BULK 10uF_X5R_RELAY_BULK	C_0805_2012Metric	C36
1	DNP_4.7NF_CHASSIS DNP_4.7nF_CHASSIS	C_1206_3216Metric	C50
4	0R_LINK	R_0402_1005Metric	R1, R2, R3, R4
1	1k	R_0603_1608Metric	R5
4	100K_FAIL_MUTE 100k_FAIL_MUTE	R_0603_1608Metric	R6, R12, R13, R14
2	4.7K 4.7k	R_0603_1608Metric	R7, R8
2	0R_LINK	R_0603_1608Metric	R9, R10
1	10K 10k	R_0603_1608Metric	R11
6	499R_0.1%	R_0805_2012Metric	R20, R21, R22, R23, R24, R25
3	2.2K 2.2k	R_0603_1608Metric	R31, R32, R33
3	100K 100k	R_0603_1608Metric	R34, R35, R36
1	1R_ANALOG_ISOLATION	R_0805_2012Metric	R40
1	DNP_0R_CHASSIS_BOND	R_1206_3216Metric	R50

Dac line output eval design files

The KiCad project lives in the birdybro/FPGA_Amp repository on GitHub; these links point at the commit this page was built from.

Dac line output eval: common questions

How big is the Dac line output eval PCB?

The Dac line output eval measures 112 × 72 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Dac line output eval?

77 components, from 46 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 Dac line output eval design files?

From the birdybro/FPGA_Amp 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 Dac line output eval design in my own project?

Yes, under the terms of its GPL-3.0 license, which birdybro chose for the repository.

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