Speakerguy
Active Member
OK, I am looking for an FM modulator circuit (or IC if it exists) that will have a carrier frequency between ~30kHz and a few hundred kHz.
In the current plan for this device in which it will be used, I want 0-20kHz (audio signal) mapped to a ~1KHz variation in the carrier frequency, so that the audio signal modulates the 30kHz carrier wave from 29 to 31kHz. These numbers are ballpark, but within 10% or so of the final values (the tolerance on the key part this circuit will be feeding is poor).
Is there a discrete, low distortion (<1%) FM modulator circuit or IC that will do this? After reading this you probably know why I am in love with the XR2206
In an alternatively designed device I could use AM modulation with the same carrier frequency but a much wider modulation range (1-99% AM modulation).
Any help is appreciated!!!
In the current plan for this device in which it will be used, I want 0-20kHz (audio signal) mapped to a ~1KHz variation in the carrier frequency, so that the audio signal modulates the 30kHz carrier wave from 29 to 31kHz. These numbers are ballpark, but within 10% or so of the final values (the tolerance on the key part this circuit will be feeding is poor).
Is there a discrete, low distortion (<1%) FM modulator circuit or IC that will do this? After reading this you probably know why I am in love with the XR2206
In an alternatively designed device I could use AM modulation with the same carrier frequency but a much wider modulation range (1-99% AM modulation).
Any help is appreciated!!!