The LM48860 is a ground referenced, fixed-gain audio power amplifier capable of
delivering 40mW per channel of continuous average power into a 16Ω single-ended load with less than
1% THD+N from a 3V power supply.
The LM48860 features a new circuit technology that utilizes a charge pump to generate a
negative reference voltage. This allows the outputs to be biased about ground, thereby eliminating
output-coupling capacitors typically used with normal single-ended loads.
Boomer audio power amplifiers were designed specifically to provide high quality output
power with a minimal amount of external components. The LM48860 does not require output coupling
capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low
voltage applications where minimal power consumption is a primary requirement.
The LM48860 features a low-power consumption shutdown mode selectable for either channel
separately. This is accomplished by driving either the SD_RC (Shutdown Right
Channel) or SD_LC (Shutdown Left Channel) (or both) pins with logic low,
depending on which channel is desired shutdown. Additionally, the LM48860 features an internal
thermal shutdown protection mechanism.
The LM48860 contains advanced pop & click circuitry that eliminates noises which
would otherwise occur during turn-on and turn-off transitions.
The LM48860 has an internal fixed gain of 1.5V/V.
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