'2-Channel' related articles 1

  1. 2009/01/31 LA4814V - Monolithic Linear IC 2-Channel Power Amplifier
The LA4814V buili-in the power amplifier circuit capable of low-voltage (2.7V and up) operation and has additionally a standby function to reduce the current drain. It is a power amplifier IC optimal for speaker drive used in battery-driven portable equipment and other such products.

*On-chip 2-channel power amplifier
- Output power 1 = 350mW typ. (VCC = 5.0V, RL = 4Ω, THD = 10%)
- Output power 2 = 150mW typ. (VCC = 3.6V, RL = 4Ω, THD = 10%)
*Enables monaural BTL output system by changing externally connected components
- Output power 3 = 700mW typ. (VCC = 5.0V, RL = 8Ω, THD = 10%)
- Output power 4 = 320mW typ. (VCC = 3.6V, RL = 8Ω, THD = 10%)
*Low-voltage operation possible
- VCC =2.7V and up
*Standby function
- Current drain at standby = 0.1μA typ. (VCC = 5V)
*Voltage gain setting possible
- Voltage gain = 3 to 20dB
*Second amplifier stop control function
- Reducing the pop noise at startup (in BTL mode)

Mini radio cassette players/recorders, portable radios, transceivers and other portable audio devices


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