AFE Card
About the AFE Card PCB
AFE Card is an open source PCB design by scular-HCC, published on GitHub under the Custom license license. It is a 2-layer board measuring 160 × 100 mm, with 106 components from 87 distinct parts.
Other key parts include the LT3042EMSE +12V, OPA814DBVR, AD835 demod, ADS1115 and OPA192IDBVR ERR1 buffer. By type, the board carries 51 capacitors, 37 resistors, 11 ICs and 3 connectors.
It belongs with the test & measurement designs in this gallery.
From the project
Dual laster Pound-Dreaver-Hall driver setup. 1550 nm DFBs. Q=10^-5. Less than 20 GHz difference
A precision two-channel controller for 1550 nm DFB butterfly lasers — a differential optical thermometer built as a 3U Eurocard instrument.
Each channel provides low-noise constant-current laser drive, a bipolar linear TEC temperature controller, RF frequency modulation, and a synchronous-demodulation Pound–Drever–Hall lock that holds the laser to the side of an optical resonance. Lasers A and B lock to their own fringe of a shared reference cavity; the beat frequency between them, Δν = S·(TB − TA) with S ≈ 2 GHz/K, is a ratiometric measurement in which slow common-mode drift cancels.
Main components on the AFE Card
AFE Card bill of materials (BOM)
106 components, 87 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LT3042EMSE +12V | MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm | U1 |
| 2 | OPA814DBVR | OPA814DBVR | U30, U31 |
| 2 | AD835 demod | SOIC-8_3.9x4.9mm_P1.27mm | U45, U46 |
| 1 | ADS1115 | MSOP-10_3x3mm_P0.5mm | U201 |
| 1 | OPA192IDBVR ERR1 buffer | SOT-23-5 | U202 |
| 1 | OPA192IDBVR ERR2 buffer | SOT-23-5 | U203 |
| 2 | OPA820 LOx3 | SOT-23-5 | U204, U205 |
| 1 | AD5696R | TSSOP-16_4.4x5mm_P0.65mm | U206 |
| 1 | DIN41612_03x32_C_Split | DIN41612_C_3x32_Male_Horizontal_THT | J1 |
| 1 | LO1 ref SMA | SMA_Amphenol_132203-12_Horizontal | J204 |
| 1 | LO2 ref SMA | SMA_Amphenol_132203-12_Horizontal | J205 |
| 2 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C_K1, C_K2 |
| 2 | 100R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R_S1, R_S2 |
| 1 | 4.7uF X7R | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1 |
| 1 | 4.7uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2 |
| 2 | Cf 1p C0G 0402 | C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C78, C79 |
| 2 | Crf 10n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C94, C95 |
| 2 | 1n | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C96, C97 |
| 2 | 68pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C98, C99 |
| 1 | 100nF PD1 level | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C213 |
Show 67 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100nF PD2 level | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C214 |
| 1 | 10uF I2C-3V3 | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C215 |
| 1 | 100nF decouple ADC | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C216 |
| 1 | 100nF buf +15V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C217 |
| 1 | 100nF buf -15V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C218 |
| 1 | 100nF U30 +5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C219 |
| 1 | 100nF U31 +5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C220 |
| 1 | 100nF U45 +5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C221 |
| 1 | 100nF U46 +5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C222 |
| 1 | 10uF bulk +5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C223 |
| 1 | 100nF U45 -5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C224 |
| 1 | 100nF U46 -5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C225 |
| 1 | 10uF bulk -5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C226 |
| 1 | 100nF LO1 couple | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C227 |
| 1 | 10uF U45 +5V bulk | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C228 |
| 1 | 10uF U45 -5V bulk | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C229 |
| 1 | 100nF LO2 couple | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C230 |
| 1 | 10uF U46 +5V bulk | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C231 |
| 1 | 10uF U46 -5V bulk | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C232 |
| 2 | 100nF LO couple in | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C233, C236 |
| 2 | 100nF buf +5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C234, C237 |
| 2 | 100nF buf -5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C235, C238 |
| 1 | 1uF VREF_MID bulk | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C241 |
| 1 | 10uF bulk +15V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C242 |
| 1 | 10uF bulk -15V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C243 |
| 1 | 100nF VB1 | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C247 |
| 1 | 100nF VB2 | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C248 |
| 1 | 100nF U203 +15V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C249 |
| 1 | 100nF U203 -15V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C250 |
| 1 | 100nF U206 VDD | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C251 |
| 1 | 10uF U206 VDD bulk | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C252 |
| 1 | 100nF U206 VLOGIC | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C253 |
| 1 | 100nF U206 VREF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C254 |
| 1 | 100nF U30 -5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C255 |
| 1 | 100nF U31 -5V | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C256 |
| 1 | 10uF LT3042 IN bulk | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C257 |
| 1 | 100nF LT3042 IN | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C258 |
| 1 | 6.04k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 120k 0.1% | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2 |
| 2 | Rf 8k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R100, R101 |
| 2 | 3.3k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R116, R117 |
| 2 | 6.65k | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R118, R119 |
| 1 | 10k RF1 bias | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R120 |
| 1 | 10k LO1 bias | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R121 |
| 1 | 10k RF2 bias | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R122 |
| 1 | 10k LO2 bias | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R123 |
| 2 | 2.00k Rf | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R124, R127 |
| 2 | 1.00k Rg | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R125, R128 |
| 2 | 10k LO bias | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R126, R129 |
| 1 | 10k PD1_LVL bot | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R134 |
| 1 | 10k PD2_LVL bot | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R135 |
| 1 | 49.9k Rf ERR1 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R138 |
| 1 | 49.9k Rf ERR2 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R139 |
| 1 | 49.9k VB1 top | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R140 |
| 1 | 8.25k VB1 bot | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R141 |
| 1 | 49.9k VB2 top | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R142 |
| 1 | 8.25k VB2 bot | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R143 |
| 1 | 357k PG top | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R144 |
| 1 | 10k PG bot | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R145 |
| 1 | 100k DAC->VB1 inject | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R146 |
| 1 | 100k DAC->VB2 inject | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R147 |
| 2 | 100R I2C series | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R211, R212 |
| 1 | 10k PD1 level tap | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R213 |
| 1 | 10k PD2 level tap | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R214 |
| 1 | 10R I2C-3V3 filter | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R216 |
| 1 | 47R ERR1 bus series | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R217 |
| 1 | 47R ERR2 bus series | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R218 |
AFE Card design files
The KiCad project lives in the scular-HCC/DualLaserPDHDriver repository on GitHub; these links point at the commit this page was built from.
AFE Card: common questions
How big is the AFE Card PCB?
The AFE Card measures 160 × 100 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the AFE Card?
106 components, from 87 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 AFE Card design files?
From the scular-HCC/DualLaserPDHDriver 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 AFE Card design in my own project?
It is published under Custom license, which limits how it may be reused; read the license before building on it.
More boards in DualLaserPDHDriver
Laser driver v3 Power
261.3 × 165.2 mm273 parts2LCustom license0
NXPDual PDH Laser driver v3
291.8 × 265.6 mm197 parts2LCustom license0
NXPDIG Card
160 × 100 mm187 parts6LCustom license0
CH Card
160 × 100 mm159 parts6LCustom license0
Pm1p8V pm5V 5Vref 5Vlaser
160 × 100 mm106 parts2LCustom license0
Mains 18V TEC
160 × 100 mm88 parts2LCustom license0
Pm6V
160 × 100 mm64 parts2LCustom license0
Pm22V
160 × 100 mm28 parts2LCustom license0
Backplane Slots
390.5 × 128.6 mm11 parts2LCustom license0
AC Board
62.4 × 42.7 mm5 parts2LCustom license0
BTF Card
43.4 × 75 mm4 parts2LCustom license0
Similar boards
LevelShifter
gusmanb
28.3 × 39.8 mm21 parts2LGPL-3.05.0k
StackLink
52.3 × 10.5 mm5 parts2LGPL-3.05.0k
AnalyzerBoxPCB fork
52.7 × 47.9 mm54 parts4LGPL-3.05.0k
EleLab v2 Bus100
Chrismettal
100 × 100 mm37 parts2LGPL-3.0528
EleLab v2 Bus150
150 × 50 mm37 parts2LGPL-3.0528
EleLab v2 PowerFeed
68 × 50 mm11 parts2LGPL-3.0528