PDLVDS-RX — photodiode LVDS receiver

Clean-room receiver for the Miniscope Zero optical uplink: Excelitas C30737LH Si APD → OPA657 TIA → LMH7220 comparator (LVDS out, DAC-set threshold) → ADN2813 CDR → STM32H723 + USB3300 USB-HS. Design target: 50 Mbps line rate, 8b/10b (40 Mbps payload); the paper's mode: 8 Mbps Manchester (16 Mbaud), as transmitted. LT3757 flyback APD bias 150–420 V. USB-C powered; verify on any laptop over USB, no FPGA attached.

Bill of materials

83 line items, 145 placed parts.

Refs Qty Value Footprint
C1 1 0.4pF NP0 Capacitor_SMD:C_0402_1005Metric
C15 1 0.47uF Capacitor_SMD:C_0603_1608Metric
C17 C18 2 2.2uF Capacitor_SMD:C_0603_1608Metric
C2 C3 C7 C8 C9 C10 C11 C13 C14 C16 C19 C23 C24 C26 C27 C28 C30 C47 C48 C50 20 100nF Capacitor_SMD:C_0603_1608Metric
C20 C21 2 18pF Capacitor_SMD:C_0603_1608Metric
C22 C31 C42 C43 C44 C45 C46 C49 8 4.7uF Capacitor_SMD:C_0603_1608Metric
C29 1 10nF Capacitor_SMD:C_0603_1608Metric
C32 C33 2 100nF 630V Capacitor_SMD:C_1206_3216Metric
C36 C39 2 3.3nF Capacitor_SMD:C_0603_1608Metric
C38 C40 C41 3 22uF Capacitor_SMD:C_0805_2012Metric
C4 C12 2 1uF Capacitor_SMD:C_0603_1608Metric
C5 C34 2 1nF Capacitor_SMD:C_0603_1608Metric
C6 C25 C35 C37 C51 5 10uF Capacitor_SMD:C_0805_2012Metric
D1 1 C30737LH-500-90 pdlvds:C30737LH_LCC6
D2 1 S8664-20K (DNP alt) pdlvds:S8664_TO5
D3 1 USBLC6-2SC6 Package_TO_SOT_SMD:SOT-23-6
D4 1 SMBJ5.0A Diode_SMD:D_SMA
D5 1 ES1J Diode_SMD:D_SMA
D6 1 LED green PWR LED_SMD:LED_0603_1608Metric
D7 1 LED green STAT LED_SMD:LED_0603_1608Metric
D8 1 LED 740nm BIST source LED_SMD:LED_1206_3216Metric
F1 1 PTC 1.1A Fuse:Fuse_1812_4532Metric
FB1 FB2 2 600R@100MHz Inductor_SMD:L_0805_2012Metric
J1 1 USB-C receptacle Connector_USB:USB_C_Receptacle_Amphenol_12401610E4-2A
J2 1 LVDS out 2x3 Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical
J3 1 SMA test in Connector_Coaxial:SMA_Amphenol_132134_Vertical
J4 1 SWD 2x5 1.27 Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical
J5 1 HV enable jumper Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical
L1 L2 2 2.2uH Inductor_SMD:L_0805_2012Metric
MH1 MH2 MH3 MH4 4 M3 corner MountingHole:MountingHole_3.2mm_M3
MH5 MH6 2 M2.5 lens holder MountingHole:MountingHole_2.7mm_M2.5
Q1 1 IRLML0030 SOT-23 Package_TO_SOT_SMD:SOT-23
R1 1 3.3k Resistor_SMD:R_0603_1608Metric
R11 1 49.9R DNP Resistor_SMD:R_0603_1608Metric
R13 R14 R46 3 100R Resistor_SMD:R_0603_1608Metric
R17 1 12k 1% Resistor_SMD:R_0603_1608Metric
R18 R19 2 5.1k Resistor_SMD:R_0603_1608Metric
R2 R10 R44 R45 4 1k Resistor_SMD:R_0603_1608Metric
R20 R21 2 4.7k Resistor_SMD:R_0603_1608Metric
R24 1 24.9k (RT, VERIFY f=250k) Resistor_SMD:R_0603_1608Metric
R25 1 143k Resistor_SMD:R_0603_1608Metric
R26 1 33k Resistor_SMD:R_0603_1608Metric
R28 1 0.05R Resistor_SMD:R_1206_3216Metric
R29 1 10k HV Resistor_SMD:R_1206_3216Metric
R3 1 806R Resistor_SMD:R_0603_1608Metric
R30 1 4.7M bleeder Resistor_SMD:R_1206_3216Metric
R31 1 7.68M 0.1% HV divider top Resistor_SMD:R_1206_3216Metric
R32 1 75.0k 0.1% Resistor_SMD:R_0603_1608Metric
R33 1 140k 0.1% DAC inject Resistor_SMD:R_0603_1608Metric
R34 1 10M HV probe Resistor_SMD:R_1206_3216Metric
R35 1 312k Resistor_SMD:R_0603_1608Metric
R36 R39 2 100k Resistor_SMD:R_0603_1608Metric
R38 1 587k Resistor_SMD:R_0603_1608Metric
R4 1 200R Resistor_SMD:R_0603_1608Metric
R40 1 46k RSET=+4.6V Resistor_SMD:R_0603_1608Metric
R41 R43 2 1k ILIM=125mA Resistor_SMD:R_0603_1608Metric
R42 1 33.2k RSET=+3.32V Resistor_SMD:R_0603_1608Metric
R5 R6 R12 R15 R16 R22 R23 R27 R37 9 10k Resistor_SMD:R_0603_1608Metric
R7 1 0R (fit for TIA direct) Resistor_SMD:R_0603_1608Metric
R8 1 0R DNP (fit for post-amp) Resistor_SMD:R_0603_1608Metric
R9 1 100k (hysteresis) Resistor_SMD:R_0603_1608Metric
RJ1 RJ2 2 0R DNP Resistor_SMD:R_0603_1608Metric
SH1 1 Shield can frontend pdlvds:SHIELD_CAN_26x20
T1 1 Flyback xfmr 1:20 pdlvds:XFMR_FLYBACK_6P
TP1 1 HV test point TestPoint:TestPoint_Pad_D1.5mm
TP2 1 DBG TX test point TestPoint:TestPoint_Pad_D1.5mm
TP3 1 DBG RX test point TestPoint:TestPoint_Pad_D1.5mm
U1 1 OPA657N Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
U10 1 LT3757EMSE Package_SO:MSOP-10-1EP_3x3mm_P0.5mm_EP1.68x1.88mm
U11 1 TPS62130RGT Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.45x1.45mm
U12 1 TPS62130RGT (inv) Package_DFN_QFN:QFN-16-1EP_3x3mm_P0.5mm_EP1.45x1.45mm
U13 1 LT3042EDD (+VA) Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm
U14 1 LT3042EDD (+3V3A) Package_DFN_QFN:DFN-10-1EP_3x3mm_P0.5mm_EP1.55x2.48mm
U2 1 THS4304DBV Package_TO_SOT_SMD:SOT-23-5
U3 1 LMH7220MK Package_TO_SOT_SMD:TSOT-23-6
U4 1 ADN2813ACPZ Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm
U5 1 SN65LVDS32D Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
U6 1 STM32H723ZGT6 Package_QFP:LQFP-144_20x20mm_P0.5mm
U7 1 USB3300-EZK Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm
U8 1 DAC8562SDGS Package_SO:VSSOP-10_3x3mm_P0.5mm
U9 1 TMP117NAI pdlvds:TMP117_WSON6
X1 1 24MHz Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm
X2 1 25MHz OSC Oscillator:Oscillator_SMD_Abracon_ASE-4Pin_3.2x2.5mm