Difference between revisions of "Velleman PCSGU250"
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Revision as of 15:53, 30 July 2013
File:Velleman PCSU250.jpg
Velleman PCSU250
The [1] is an inexpensive USB-based oscilloscope. It has 2 channels, an analog bandwidth of 12MHz and 25MS/s sampling rate.
See Velleman PCSU250/Info for more details (such as lsusb -vvv output) about the device.
Hardware
Control logic
- Xilinx XC3S50 50K-gate FPGA
- 50MHz crystal: 50.000 Y0KE (clock source for the Xilinx FPGA)
- Microchip PIC16F630-I/P 8-bit microcontroller
USB interface
- FTDI FT245BL USB interface chip
- 6MHz crystal
- Microchip 93LC46BI 128-byte EEPROM chip for the FTDI chip's USB settings
Analog frontend
- 2 x Unisonic ULN2003 7-channel darlington sink driver (each driving a set of 7 relays)
- 14 x SIR-S4-105A FZ Goodsky 5V relay (7 per input channel)
- 2 x Texas Instruments OPA354 op-amps
- 2 x National Semiconductor LMH6724 op-amps
- 2 x Texas Instruments ADC08L060 8-bit 60MSPS A/D converters
Channel triggers
- NXP 74LVC07AD Hex non-inverting buffers
- Texas Instruments TLC5620 8-bit quad DAC
- Texas Instruments TLC372 dual differential comparator
Power
- 3 x Texas Instruments TPS766xx voltage regulators (IC19=1V, IC20=2.5V, IC21=3.3V)
?
- Philips/NXP 74HC367D Hex buffer/line driver
Photos
Back
Side
PCB, front
PCB, back
main ICs
main ICs detail
PCB, chunk
Xilinx XC3S50
Microchip PIC16F630-I/P
FTDI FT245BL
Microchip 93LC46BI
Philips/NXP 74HC367D
3x SOIC-8 chips
50MHz crystal
Input sections
Input section detail
Input section detail
UTC ULN2003
SIR-S4-105A FZ
Protocol
TODO.
Resources
- The vendor software appears to have been written by Magnova Components.