2014年8月16日 · I wanted to experiment with a DAC, so i bought this little DAC0808 IC, found this nice little diagram of how to use it: But when i wire it up like that... it does absolutely nothing. On pin 4 i measure 0.05V compared to the ground, and it doesn't matter what the input pins have, it stays at 0.05V (well, sometimes it goes all the way up to 0.07V, but that's not quite an improvement) What i'm ...

2014年11月27日 · Hello. I'm designing a MIDI to CV converter with Arduino. Arduino receives 0-127 values of notes, and along with the DAC and opamps it generates a DC voltage according to each note, in a 1v/oct scale, this is 83,333mV each note. Right now the MIDI part doesn't matter. I'm using a DAC0808 which is 8bit.

2015年5月17日 · i have a DAC circuit and arduino uno.. i want to test the DAC circuit, but the output is 0V. i am using port 2-9 on PWM arduino uno , and set pinMode to HIGH. here the circuit of DAC, as the picture i attach. VCC = 5V VEE = -15V Vref = i have 12V and 15V.. but the output of DAC is still 0V,, can you help me ?

2016年3月9日 · Hi all , I'm kinda new on the eletronic and arduino world and i have a simple question about how to connect the DAC0808 with the arduinoUNO. I don't know if this will make difference but i need to send a signal to the DAC - i will use 8 pins to send data to it , and the arduinoUNO has 6 analog pins. If i use the digitalwrite using this 6 analog pins and 2 other pins ( ex: digital write to a0 ...

2014年8月16日 · I would recommend NOT using a DAC0808 if you can avoid it, for 3 reasons: Parallel input uses a lot of pins. An SPI DAC will only use 3 (Clock, Data, and Chip select). It requires a negative voltage to bias the output circuitry. My DAC0808 datasheet says it requires a minimum of -4.5 V on Vee. Grounding it won't cut it. It is a current output DAC.

2011年12月23日 · It won't, this is because you are only getting a few samples per cycle and it doesn't look much like a sin wave on an oscilloscope.

2010年5月23日 · Here is the current ISR part of my Scarab bass synth.(now it uses 2x AD7528 instead of 4x DAC0808) SIGNAL ...

2021年5月13日 · determine how fast you write values to the DAC. create a table with the values to write (pre-calculate), one complete sinewave at the desired amplitude and with the appropriate offset for zero, and at the appropriate sample rate.

2015年4月16日 · El DAC0808 es un convertidor Digital/Analógico de 8 bits el cual puede sacar un voltaje analógico a partir de una entrada digital, esto es usado en varias aplicaciones de comunicaciones y audio, entre otras. Es bastante fácil de usar con cualquier microcontrolador o inclusive, sin necesidad de el para algunas aplicaciones de enseñanza.

2012年5月18日 · I've used DAC0808, it's current out, too, but not differential. Add a transconductance transimpedance amp 1 (I-to-V converter) and you have 0-5V in 256 steps, a lot fewer support components than shown 2 for the '0800.