Components for producing ASK | Cypress Semiconductor
Components for producing ASK
I have a project that needs to output a 125 kHz signal, modulated by 2400 Baud data stream.
Before I reort to bit-bashing the application, I thought I would see if there might be a simpler way to do this uing internal components.
The physical output needs to have the 125 kHz ASK modulated waveform appearing in in a push-pull fashion on 2 pins (one pin is high whiel other is low. This is ok, I can use a NOT gate for second pin.
When the system is not sending data, I need an ENABLE output.
I was hoping I could have an enable function internally that set a 125 kHz generator of some sort running (clock/PWM ?)
as well as the enable signal appearing on a digital output. The generator output would appear at 2 pins when enabled and producce hi/low transitions at 125 kHz (one pin will produce high/low and other low/high).
Then some way of applying a stream of Data (2400 Baud) to modulate the generator on and off.
Any ideas much appreciated