RT9104 Datasheet, PDF (1/13 Pages) Richtek Technology Corporation – 3W Stereo Class-D Audio Power Amplifier with DC Volume Control

RT9104
3W Stereo Class-D Audio Power Amplifier with DC Volume
Control
General Description
The RT9104 is a stereo, high efficiency, filter free Class-D
audio amplifier capable of delivering 3W per channel into
3Ω speakers. For application flexibility, the gain can be
set by external DC volume control. Thermal protection as
well as overcurrent protection functions are included in
the stereo amplifier. The SOP-16 packaging without
additional heat sink makes the RT9104 Class-D amplifier
an ideal choice for monitor applications. The RT9104 is
also well suited for battery powered applications because
of its operating voltage (from 4.5V to 5.5V) and very low
shutdown current.
The RT9104 is available in WQFN-16L 3x3, SOP-16 and
DIP-16 packages.
Ordering Information
RT9104
Package Type
QW : WQFN-16L 3x3 (W-Type)
S : SOP-16
N : DIP-16
Note :
Lead Plating System
G : Green (Halogen Free and Pb Free)
Richtek products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Features
z 4.5V to 5.5V Input Supply Range
z 3W Per Channel into 3Ω Speakers (THD+N = 10%)
z 300kHz High Internal Switching Frequency
z Efficiency Greater than 85%
z DC Volume Control from −70dB to 20dB
z Fade In at Enable and Power On
z Thin 16-Lead WQFN and SOP-16 and DIP-16
Packages
z RoHS Compliant and Halogen Free
Applications
z LCD Monitors
z Consumer Device
z Powered Speakers
Pin Configurations
(TOP VIEW)
16 15 14 13
ROUT+ 1
PVDD 2
GND 3
ROUT- 4
GND
17
12 LOUT+
11 PVDD
10 GND
9 LOUT-
5 678
WQFN-16L 3x3
INR
BYPASS
2
ROUT+
3
PVDD
4
GND
5
ROUT-
6
GND
7
SHDN
8
16
INL
15
VOLUME_IN
14
LOUT+
13
PVDD
12
GND
11
LOUT-
10
GND
9
AVDD
SOP-16/DIP-16
DS9104-01 April 2011
www.richtek.com
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