The problem is that TCD1304AP needs minimum clock 0.8 Mhz, this is what the data sheet says.

The fastest clock I can get from Arduino 120 kHz from simple loop

but if I add any extra code looks the fastest speed gets down to 10 KHz on any of the digital outputs.

I wonder if TCD1304AP can be driven at lower speed like 10 KHz and still work.


to operate at the recommended speed would require extra circuit with A/D converter and stored in fast memory for Arduino to get the data later.
but it makes it too complicated and too expensive.

I like Arduino it is so simple and flexible for many projects.

 

You can use a Teensy2 or 3 with better speed and performance while maintaining much of the Arduino simplicity and flexibility. From what I am reading, the teensy2 works fine with a TCD1304AP - https://github.com/superzerg/TCD1304AP_teensy2pp

 

You can create a 8 MHz clock output on PWM pins. Instead of counting from 0 to 255 (8 bit) you can toggle the output every cycle -> f_out = f_arduino_clock/2 = 8 MHz for 16 MHz clock. Check out https://forum.arduino.cc/index.php?topic=432538.0

 

thanks for the replies

the driving of the sensor wouldn't be a problem, I see that I can only drive it.

but getting the data into analog pin and read it would be impossible, the data rate is 1/4 of the clock.

So I do not see that I can drive it with 1 Mhz and ready with 0.25 Mhz at the same time

so I still need another circuit

 

http://davidallmon.com/pages/ccd-transmission-spectrograph
https://www.arduino-board.com/projects/arduino-linear-ccd