3 Watt Audio Power Amplifier with Selectable Shutdown Logic Level
The CM8601 is an audio power amplifier primarily designed for demanding applications in mobile phones and
other por-table communication device applications. It is capable of delivering 1.25 watts of continuous average power to
an 8 BTL load and 2 watts of continuous average power (LD and MH only) to a 4ΩBTL load with less than 1%
(THD+N+N) from a 5VDC power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal
amount of external components. The CM8601 does not require output coupling capacitors or bootstrap capacitors, and
therefore is ideally suited for mobile phone and other low voltage appli- cations where minimal power consumption is a
primary re- quirement.
The CM8601 features a low-power consumption shutdown mode. To facilitate this, Shutdown may be enabled by
either logic high or low depending on mode selection. Driving the shutdown mode pin either high or low enables the
shutdown pin to be driven in a likewise manner to enable shutdown.
The CM8601 contains advanced pop & click circuitry which eliminates noise which would otherwise occur during turn-
on and turn-off transitions.
The CM8601 is unity-gain stable and can be configured by external gain-setting resistors.
Ø Improved PSRR at 217Hz & 1KHz
Ø Power Output at 5.0V,
4Ω (LD and MH only)
Ø Power Output at 5.0V, 1% THD+N, 8Ω 1.25W (typ)
Available in space-saving packages:SOP-8
Ø Ultra low current shutdown mode
Ø Improved pop & click circuitry eliminates noise
during turn-on and turn-off transitions
Ø 1.8V – 7.0V operation
Ø Mobile Phones
Ø Power Output at 3.0V, 1% THD+N, 4Ω 600mW (typ)
Ø Power Output at 3.0V, 1% THD+N, 8Ω 425mW (typ)
Ø Shutdown Current
Ø No output coupling capacitors, snubber
networks or bootstrap capacitors required
Ø Unity-gain stable
Ø External gain configuration capability
Ø User selectable shutdown High or Low logic Level
Ø Portable electronic device
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