WM9010 Datasheet, PDF (1/12 Pages) Wolfson Microelectronics plc – Low Power, Class G Stereo Headphone Driver

w
WM9010
Low Power, Class G Stereo Headphone Driver
DESCRIPTION
FEATURES
The WM9010 is a low power stereo headphone driver designed
for mobile handset and portable media player (PMP)
applications. Class G amplifier technology is used to achieve
high power efficiency and low quiescent current.
Stereo analogue inputs accept 1Vrms line level inputs; the Hi-Fi
output drivers deliver up to 28mW into a 32Ω load.
An integrated charge pump circuit generates split-rail voltage
supplies to power the ground-referenced headphone driver.
The WM9010 incorporates Wolfson Silent Switch™ technology
to provide pop and click suppression whenever the WM9010 is
enabled or disabled.
The WM9010 is supplied in a 12-pin CSP package.
• Hi-fi audio headphone drivers (104dB SNR - ‘A’ weighted)
• Stereo analogue audio inputs
• Ground-referenced, cap-less headphone outputs
• Integrated charge pump and oscillator circuits
• Low quiescent current
• RF noise suppression
• Pop and click suppression
• 12-pin CSP package (1.84 x 1.34 x 0.7mm)
APPLICATIONS
• Mobile Handsets
• Portable Media Players (PMP)
• Notebooks / Laptop computers
• LCD televisions
ENA
GND
VDD
RF noise
suppression
Pop and click
suppression
INL
-
+
INR
-
INREF
+
HPOUTL
HPOUTR
Oscillator
WM9010
Charge Pump
WOLFSON MICROELECTRONICS plc
To receive regular email updates, sign up at http://www.wolfsonmicro.com/enews
Production Data, February 2011, Rev 4.0
Copyright ©2011 Wolfson Microelectronics plc