1fNoiseAmplifierRev13

curtisseizert·LowFreqLNA·1fNoiseAmplifierRev13/1fNoiseAmplifierRev13.kicad_pcb

1fNoiseAmplifierRev13 PCB layout, top view — open source board by curtisseizert

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About the 1fNoiseAmplifierRev13 PCB

1fNoiseAmplifierRev13 is an open source PCB design by curtisseizert, published on GitHub under the MIT license. It is a 6-layer board measuring 140 × 100 mm, with 375 components from 100 distinct parts.

Other key parts include the ADA4807-1, ADA4622-2, DG636EEQ, OPA140 and OPA2191. By type, the board carries 119 resistors, 110 capacitors, 47 transistors, 40 ICs, 36 connectors and 18 diodes.

It belongs with the audio and power & battery designs in this gallery.

From the project

A 0.01Hz-1+MHz low noise amplifier

Current Status -------------- I have made two of these and have done a fair amount of testing to nail down root causes of some of the issues (see later in this readme) that have proven to be a bit of a nuisance. I am also moving things around a bit on the battery and battery charger boards to allow a board-to-board connection of the two and increase the clearance between the battery board and the amplifier board. I have also tested improvements to the input stage that significantly reduce the low frequency noise, lowering the 1/f corner to <1 Hz. These are detailed in the issues section #7.

Main components on the 1fNoiseAmplifierRev13

ADA4807-1 ADA4622-2 DG636EEQ OPA140 OPA2191 TLV1822D TLC555xD OPA2205 LT3042xMSE LT3093xMSE 74LVC2G17 74LV221 LT1716 LP2985-3.3 74AUP1G02 MAX6008B

1fNoiseAmplifierRev13 bill of materials (BOM)

375 components, 100 distinct parts — part numbers from the project's BOM.

Qty	Part	Footprint	Refs
3	ADA4807-1	SOT-23-6_red	U1, U5, U6
3	ADA4622-2	MSOP-8_3x3mm_P0.65mm	U2, U7, U8
5	DG636EEQ	TSSOP-14_4.4x5mm_P0.65mm	U3, U9, U10, U11, U12
2	OPA140	MSOP-8_3x3mm_P0.65mm	U4, U14
1	OPA2191	MSOP-8_3x3mm_P0.65mm	U13
2	TLV1822D	SOIC-8_3.9x4.9mm_P1.27mm	U15, U18
2	TLC555xD	SOIC-8_3.9x4.9mm_P1.27mm	U16, U19
1	OPA2205	MSOP-8_3x3mm_P0.65mm	U17
1	LT3042xMSE	MSOP-10EP-3x3_P0.5mm_EP_thermal_vias_opt	U20
1	LT3093xMSE	MSOP-12-1EP_3x4mm_P0.65mm_EP1.65x2.85mm_ThermalVias_opt	U21
9	74LVC2G17	SOT-363_SC-70-6	U22, U23, U24, U25, U28, U29, U30, U31 +1
4	74LV221	TSSOP-16_4.4x5mm_P0.65mm	U26, U27, U35, U36
2	LT1716	SOT-23-5_red	U33, U34
1	LP2985-3.3	SOT-23-5	U37
1	74AUP1G02	SOT-353_SC-70-5	U38
2	MAX6008B	SOT-23	U39, U40
16	JFE2140	SOIC-8_3.9x4.9mm_P1.27mm	Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +8
1	SiS443DN	Vishay_PowerPAK_1212-8_Single	Q13
7	MMBF4117	SOT-23	Q18, Q19, Q21, Q22, Q23, Q24, Q31
1	SiS862ADN	Vishay_PowerPAK_1212-8_Single	Q20

Show 80 more

Qty	Part	Footprint	Refs
18	MMBT3904	SOT-23	Q25, Q30, Q32, Q33, Q34, Q35, Q36, Q37 +10
1	HN4C51J	SOT-23-5_red	Q26
2	HN4A51J	SOT-23-5_red	Q27, Q28
1	BSS84	SOT-23	Q29
2	Conn_Coaxial	SMA_Molex_73251-135_SMT_Vertical	J1, J2
1	PIN_JMP	PinHeader_2x03_P2.54mm_Vertical	J3
2	SMA_OUT	SMA_Molex_73251-2120_EdgeMount_Horizontal	J4, J9
24	ShieldClip	RF_Shield_Clip_Harwin_Mini	J5, J6, J7, J8, J11, J13, J14, J17 +16
2	RF_Shield_Two_Pieces	Laird_Technologies_BMI-S-206-F_36.83x33.68mm	J10, J29
1	Conn_02x02_Odd_Even	PinHeader_2x02_P1.27mm_Vertical	J12
1	Micro-Fit 3.0 43650-0310	Molex_Micro-Fit_3.0_43650-0310_1x03-1MP_P3.00mm_Horizontal_PnP	J15
1	Conn_Coaxial	SMA_Molex_73251-2120_EdgeMount_Horizontal	J16
1	IDC_HDR	PinHeader_2x10_P1.27mm_Vertical	J19
1	Conn_01x02	PinHeader_1x02_P2.54mm_Vertical	J20
1	Jumper_NO_Small	SolderJumper-2_P1.3mm_Open_RoundedPad0.5x0.75mm	JP1
4	G6KU-2	Relay_DPDT_Omron_G6K-2G-Y	K1, K2, K3, K4
8	BAV199	SOT-23	D1, D8, D9, D10, D11, D14, D15, D16
2	LED	LED_Dialight_591	D2, D12
2	DZ2S100X0L	D_SOD-523	D3, D4
3	ESDA6V1-5SC6	SOT-23-6_red	D5, D6, D7
1	BAV199DW	SOT-363_SC-70-6	D13
2	MBR0540	D_SOD-123	D17, D18
33	100nF	C_1206_3216Metric_Red	C1, C3, C5, C6, C7, C8, C10, C11 +25
6	47uF/16V	CP_EIA-3528-12_Kemet-T	C2, C18, C19, C30, C31, C90
2	2.2uF/PP	C_Rect_L16.5mm_W11.2mm_P15.00mm_MKT	C4, C9
1	68pF	C_0603_1608Metric_red_outline	C21
1	3.3pF	C_0603_1608Metric_red_outline	C22
2	12uF/PP	C_Rect_L41.5mm_W24.0mm_P37.50mm_MKS4_4_lead_S1_10.2mm	C25, C35
4	33uF/35V	CP_EIA-7343-31_Kemet-D	C29, C32, C37, C38
2	10uF/25V	CP_EIA-3528-12_Kemet-T_Kelvin	C33, C39
2	10uF/35V	C_1210_3225Metric	C34, C40
1	47pF	R_0603_1608Metric_red	C36
16	100nF X7R	C_0603_1608Metric_red_outline	C41, C42, C43, C47, C92, C93, C95, C96 +8
2	2.2uF X7R	C_0805_2012Metric_Red_outline	C44, C45
28	10nF	C_0603_1608Metric_red_outline	C46, C52, C53, C54, C56, C58, C62, C63 +20
2	47nF	C_0805_2012Metric_Red_outline	C48, C49
2	470nF	C_1206_3216Metric_Red	C50, C51
2	1nF	C_0603_1608Metric_red_outline	C55, C57
2	10pF	C_0603_1608Metric_red_outline	C59, C60
1	33pF	C_0603_1608Metric_red_outline	C61
1	47nF/25V	C_0805_2012Metric_Red_outline	C82
9	49R9	R_0603_1608Metric_red	R1, R7, R10, R17, R30, R33, R50, R62 +1
1	1k 0.1%	R_0805_2012Metric_red	R2
1	100R	R_0603_1608Metric_red	R3
1	2R 0.1%	R_0805_2012Metric_red	R4
2	887R	R_0603_1608Metric_red	R5, R34
2	10M	R_1206_3216Metric_red	R6, R48
1	4R7	R_0603_1608Metric_red	R8
1	100M	R_1206_3216Metric_red	R9
16	1M	R_0603_1608Metric_red	R11, R20, R63, R65, R71, R74, R83, R88 +8
3	100k	R_0603_1608Metric_red	R12, R21, R23
1	54k9 0.1%	R_1206_3216Metric_red	R13
2	604k	R_0603_1608Metric_red	R14, R26
1	39k	R_0603_1608Metric_red	R15
2	0R5	R_1206_3216Metric_red	R16, R18
1	43k 0.1%	R_1206_3216Metric_red	R19
4	9k53	R_0603_1608Metric_red	R22, R36, R59, R60
10	1k	R_0603_1608Metric_red	R24, R25, R32, R39, R49, R51, R52, R57 +2
1	18k7	R_0603_1608Metric_red	R27
3	56k2	R_0603_1608Metric_red	R28, R64, R82
3	200k	R_0603_1608Metric_red	R29, R56, R102
1	750k	R_1206_3216Metric_red	R31
4	28k7	R_0603_1608Metric_red	R35, R54, R58, R75
1	2k67	R_0603_1608Metric_red	R37
1	6M8	R_1206_3216Metric_red	R38
2	200R 0.1%	R_0805_2012Metric_red	R40, R44
2	180R 0.1%	R_0805_2012Metric_red	R41, R45
4	1k8 0.1%	R_0805_2012Metric_red	R42, R43, R46, R47
17	3k3	R_0603_1608Metric_red	R53, R66, R67, R72, R76, R84, R85, R86 +9
1	7k5	R_0603_1608Metric_red	R55
3	10M	R_0603_1608Metric_red	R61, R79, R81
2	330 0.1%	R_0805_2012Metric_red	R68, R69
2	30k 0.1%	R_0805_2012Metric_red	R70, R73
1	100R	R_1206_3216Metric_red	R93
2	6k02 0.1%	R_1206_3216Metric_red	R98, R106
2	240R 0.1%	R_1206_3216Metric_red	R99, R105
2	10k/10k	SOT-23	RN1, RN3
1	9k/1k	SOT-23	RN2
3	100k	R_Array_Convex_4x0402	RN4, RN7, RN9
3	33R	R_Array_Convex_4x0402	RN5, RN6, RN8

1fNoiseAmplifierRev13 design files

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

1fNoiseAmplifierRev13: common questions

How big is the 1fNoiseAmplifierRev13 PCB?

The 1fNoiseAmplifierRev13 measures 140 × 100 mm, has 6 copper layers and is 1.13714 mm thick.

How many components are on the 1fNoiseAmplifierRev13?

375 components, from 100 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 1fNoiseAmplifierRev13 design files?

From the curtisseizert/LowFreqLNA 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 1fNoiseAmplifierRev13 design in my own project?

Yes, under the terms of its MIT license, which curtisseizert chose for the repository.

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