IS31AP4990D
Integrated Silicon Solution, Inc. – www.issi.com 1
Rev. C, 06/24/2014
1.2W AUDIO POWER AMPLIFIER WITH ACTIVE-LOW SHUTDOWN MODE
June 2014
DESCRIPTION
The IS31AP4990D has been designed for demanding
audio applications such as mobile phones and permits
the reduction of the number of external components.
It is capable of delivering 1.2W of continuous RMS
output power into an 8Ω load @ 5V.
An externally-controlled shutdown mode reduces the
supply current to less than 1μA. It also includes
internal thermal shutdown protection.
The unity-gain stable amplifier can be configured by
external gain setting resistors.
FEATURES
Operating from V
CC
= 2.7V ~ 5.5V
1.2W output power @ V
CC
= 5V, THD+N= 1%,
f = 1kHz, with 8Ω load
Ultra-low consumption in shutdown mode (1μA)
Near-zero pop & click
Ultra-low distortion
Unity gain stable
UTQFN-9L (1.5mm × 1.5mm) package
APPLICATIONS
Mobile phones
PDAs
Portable electronic devices
Notebook computer
TYPICAL APPLICATION CIRCUIT
Figure 1 Typical Application Circuit (Single-ended Input)
