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www.ti.com
SLOS429 − MAY 2004
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FEATURES
APPLICATIONS
D
D
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Designed for Wireless or Cellular Handsets
and PDAs
D
D
D
Ideal for Wireless Handsets
PDAs
1.7 W Into 8 Ω From a 5-V Supply at
THD = 10% (Typ)
Notebook Computers
Low Supply Current: 4 mA typ at 5 V
Shutdown Current: 0.01 mA Typ
Fast Startup With Minimal Pop
Only Three External Components
− Improved PSRR (−80 dB) and Wide Supply
Voltage (2.5 V to 5.5 V) for Direct Battery
Operation
− Fully Differential Design Reduces RF
Rectification
− −63 dB CMRR Eliminates Two Input
Coupling Capacitors
DESCRIPTION
The TPA6204A1 is a 1.7-W mono fully-differential
amplifier designed to drive a speaker with at least 8-Ω
impedance while consuming only 20 mm2 total
printed-circuit board (PCB) area in most applications. The
device operates from 2.5 V to 5.5 V, drawing only 4 mA of
quiescent supply current. The TPA6204A1 is available in
the space-saving 3 mm x 3 mm QFN (DRB) package.
The TPA6204A1 is ideal for PDA/smart phone
applications due to features such as −80-dB supply
voltage rejection from 20 Hz to 2 kHz, improved RF
rectification immunity, small PCB area, and a fast startup
with minimal pop.
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Pin to Pin Compatible With TPA2005D1 and
TPA6211A1 in QFN Package
Available in 3 mm X 3 mm QFN Package
(DRB)
APPLICATION CIRCUIT
8-pin QFN (DRB) PACKAGE
(TOP VIEW)
V
DD
6
1
2
3
4
8
7
6
5
SHUTDOWN
BYPASS
IN+
V
To Battery
O−
GND
C
s
40 kΩ
V
V
DD
R
R
I
4
3
−
+
IN−
_
+
V
5
8
O+
IN−
O+
In From
DAC
V
O−
I
IN+
40 kΩ
DGN Package
(TOP VIEW)
7
GND
2
1
SHUTDOWN
BYPASS
IN+
V
1
2
3
4
8
7
6
5
Bias
Circuitry
O−
GND
SHUTDOWN
V
DD
V
O+
(1)
C
100 kΩ
(BYPASS)
IN−
(1)
C
is optional.
(BYPASS)
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
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Copyright 2004, Texas Instruments Incorporated