TPA6203A1
www.ti.com
SLOS364 – MARCH 2002
1.25-W MONO FULLY DIFFERENTIAL AUDIO POWER AMPLIFIER
FEATURES
APPLICATIONS
D Designed for Wireless or Cellular Handsets
and PDAs
D 1.25 W Into 8 Ω From a 5-V Supply at
THD = 1% (Typ)
DESCRIPTION
D Low Supply Current: 1.7 mA typ
The TPA6203A1 is a 1.25-W mono fully differential
D Shutdown Control <1 µA
D Only Five(1) External Components
– Improved PSRR (90 dB) and Wide Supply
Voltage (2.5 V to 5.5 V) for Direct Battery
Operation
– Fully Differential Design Reduces RF
Rectification
– Improved CMRR Eliminates Two Input
Coupling Capacitors
– C(BYPASS) Is Optional Due to Fully
Differential Design and High PSRR
amplifier designed to drive a speaker with at least 8-Ω
impedance while consuming less than 37 mm2 total
printed-circuit board (PCB) area in most applications.
This device operates from 2.5 V to 5.5 V, drawing only
1.7 mA of quiescent supply current. The TPA6203A1 is
available in the space-saving 2 mm x 2 mm MicroStar
Junior BGA package.
Features like 85-dB PSRR from 90 Hz to 5 kHz,
improved RF-rectification immunity, and small PCB
area makes the TPA6203A1 ideal for wireless
handsets. A fast start-up time of 4 µs with minimal pop
makes the TPA6203A1 ideal for PDA applications.
APPLICATION CIRCUIT
Actual Solution Size
VDD A3
RF
To Battery
RF
– RI
In From
DAC
C3 IN–
+ RI
C2 IN+
Cs
_
+
RF
SHUTDOWN
VO+ B3
VO– A1
CS
(1)CB
5,25 mm
GND B2
B1
C1
RI
Bias
Circuitry
RI
(1)C(BYPASS)
RF
6,9 mm
(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.
MicroStar Junior is a trademark of Texas Instruments.
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 2002, Texas Instruments Incorporated
