TS4999 Datasheet, PDF (1/36 Pages) STMicroelectronics – Filter-free stereo 2.8 W class D audio power amplifier with selectable 3D sound effects

TS4999
Filter-free stereo 2.8 W class D audio power amplifier
with selectable 3D sound effects
Features
■ Operates from V_CC = 2.4 to 5.5 V
■ Dedicated standby mode active low/channel
■ Output power per channel: 2.8 W at 5 V into
4 Ω with 10% THD+N or 0.7 W at 3.6 V into 8 Ω
with 1% THD+N max.
■ Selectable 3D sound effect
■ Four gain setting steps: 3.5, 6, 9.5 and 12 dB
■ Low current consumption
■ PSSR: 63 dB typical at 217 Hz.
■ Fast start up phase: 7.8 ms
■ Short-circuit and thermal shutdown protection
■ Flip chip 18-bump lead-free package
Applications
■ Cellular phones
■ PDAs
■ Notebook PCs
Description
The TS4999 is a stereo fully-differential class D
power amplifier. It can drive up to 1.35 W into a
8 Ω load at 5 V per channel. The device has four
different gain settings utilizing two discrete pins,
G0 and G1.
Pop and click reduction circuitry provides low
on/off switch noise while allowing the device to
start within 8 ms. 3D enhancement effects are
selected through one digital input pin that allows
more amazing stereo audio sound.
Two standby pins (active low) allow each channel
to be switched off separately.
The TS4999 is available in a flip chip, 18-bump,
lead-free package.
Flip chip 18-bump package
Pin connections (top view)
LOUT-
PGND
ROUT-
LPVCC
RPVCC
LOUT+
G1
AGND
G0
STDBYL
LIN-
ROUT+
AVCC
STDBYR
RIN-
LIN+
3D
RIN+
December 2008
Rev 1
1/36
www.st.com
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