Hi,
I'm building a small radio alarm-clock with the AR1010 FM receiver module from Sparkfun. This FM module is controlled by an arduino through I2C and the datasheet says:
Audio output voltage: 100mV rms
Output load resistance: 10k ohm
Output load capacitance: 10pF
I want to drive two common 8 ohm small speakers using a LM4880 (datasheet) stereo amplifier-in-a-chip and minimal parts. No need for very high quality and volume must be just loud enough to wake up ;-).
I don't know a lot about analog electronics though and perhaps someone in this forum could help me out figuring how to connect both chips correctly.
The datasheet has some example schematics but they are for 20k ohm input impedance. I wonder if Ri and Ci can be omitted if I connect it directly to the FM module?
I'm building a small radio alarm-clock with the AR1010 FM receiver module from Sparkfun. This FM module is controlled by an arduino through I2C and the datasheet says:
Audio output voltage: 100mV rms
Output load resistance: 10k ohm
Output load capacitance: 10pF
I want to drive two common 8 ohm small speakers using a LM4880 (datasheet) stereo amplifier-in-a-chip and minimal parts. No need for very high quality and volume must be just loud enough to wake up ;-).
I don't know a lot about analog electronics though and perhaps someone in this forum could help me out figuring how to connect both chips correctly.
The datasheet has some example schematics but they are for 20k ohm input impedance. I wonder if Ri and Ci can be omitted if I connect it directly to the FM module?
