TPA6204A1_07 Datasheet, PDF (1/18 Pages) Texas Instruments – 1.7W MONO FULLY DIFFERENTIAL AUDIO POWER AMPLIFIER

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TPA6204A1
SLOS429 − MAY 2004
1.7ĆW MONO FULLY DIFFERENTIAL AUDIO POWER AMPLIFIER
FEATURES
D Designed for Wireless or Cellular Handsets
and PDAs
D 1.7 W Into 8 Ω From a 5-V Supply at
THD = 10% (Typ)
D Low Supply Current: 4 mA typ at 5 V
D Shutdown Current: 0.01 mA Typ
D Fast Startup With Minimal Pop
D 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
D Pin to Pin Compatible With TPA2005D1 and
TPA6211A1 in QFN Package
D Available in 3 mm X 3 mm QFN Package
(DRB)
APPLICATIONS
D Ideal for Wireless Handsets
D PDAs
D Notebook Computers
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.
APPLICATION CIRCUIT
In From
DAC
40 kΩ
− ^RI 4 IN− _{_}
+ ^RI 3 _{IN+ +}
40 kΩ
VDD ₆
To Battery
Cs
VO+ 5
VO− ₈
GND 7
2
SHUTDOWN
1
Bias
Circuitry
C(BYPASS)(1)
100 kΩ
8-pin QFN (DRB) PACKAGE
(TOP VIEW)
SHUTDOWN ¹
BYPASS 2
IN+ 3
IN− 4
8 _VO−
7 GND
6 VDD
5 VO+
SHUTDOWN
BYPASS
IN+
IN−
DGN Package
(TOP VIEW)
1
8
VO−
2
7
GND
3
6
VDD
4
5
VO+
(1) _{C(BYPASS) is optional.}
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.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright  2004, Texas Instruments Incorporated