February 9, 2025

The "Ingo" spectrometer project - Hardware

This is a BW Tech BTC100-2S unit.

This article seems to be talking about the same item:

The author has other interesting articles relating to spectrometry.
Some details from the above review: 
Sony ILX511 linear CCD detector, sampled by a 16 bit ADC.
1800 lines/mm reflection grating
Czerny-Turner design
2048 pixel readout
The Sony sensor was probably originally produced for bar code scanners.

Czerny-Turner design

Parts

Xilinx XC9536 CPLD  (eight 36V18 blocks)
Silicon Labs C8051F020 microcontroller (64K flash, 4352 bytes of ram)
Cypress CY7C429 -- 2Kx9 FIFO -- two of these
Intersil IS82C54 timer
Texas Instruments AHCT123A dual monostable ("one-shot")
Sony ILX511 linear CCD detector
Max232A (on top of board) - charge pump RS232 driver.
IA0515D - generates +-15 from 5 volt input
2.0 Mhz crystal oscillator
22.1C33 labeled crystal
The C8051 controller has a 272 page datasheet and does have JTAG! It may be possible to read out the flash unless security fuses were blown.

So, where is that 16 bit ADC? The microcontroller has a 12 bit ADC. The top of the board has some parts under a metal shield. The ADC is probably hiding in there.

Have any comments? Questions? Drop me a line!

Tom's Electronics pages / tom@mmto.org