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PDF TMPA208DS Data sheet ( Hoja de datos )
| Número de pieza | TMPA208DS | |
| Descripción | 2.5W STEREO CLASS-D AUDIO POWER AMPLIFIER | |
| Fabricantes | ETC | |
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www.DataSheet4U.com
Tai-1 Microelectronics
www.taimec.com.tw / www.class-d.com.tw
Preliminary
TMPA208DS
Rev.1.0 June 27, 2006
2.5W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH VOLUME CONTROL
GENERAL DESCRIPTION
FEATURES
The TMPA208DS is a stereo class-D audio power
amplifier with volume control. It delivers up to
2.5W/ch(5W in all) into a 3 ohm load or 2W/ch(4W
in all) into a 4 ohm load or 1.25W/ch(2.5W in all)
into an 8 ohm load.
♦2.5V to 6V Single Supply
♦Up to 5Wrms Max. Power or 2.5Wrms/ch.
♦Up to 86% Power Efficiency
♦3mA /Ch Quiescent Current
With differential input structure, TMPA208DS
features high Common Mode Rejection Ratio and
Power Supply Rejection Ratio.
♦Less Than 0.2uA /Ch Shutdown Current
♦Pop-less Power-Up, Shutdown and Recovery
♦Differential 230 KHz PWM Allows Bridge-Tied Load to
Analog input signal is converted into digital
output which drives directly to the speaker. High
power efficiency is achieved due to digital output
at the load. The audio information is embedded in
PWM（Pulse Width Modulation）.
Increase Output Power
♦DC Volume Control
♦BTL Output Requires No Output Capacitors
♦Thermal Shutoff and Automatic Recovery
DC volume control is convenient for LCD
projectors, LCD monitors, powered speakers, and
other consumer products especially when using
remote control.
♦Output Pin Short-Circuit Protection (Short to Other
Outputs, Short to VCC, Short to Ground)
♦Compatible with earphone application
♦Differential Signal Processing Improves CMRR &
APPLICATIONS
Eliminates Power Regulation
Multimedia application includes Cellular Phones, ♦Package：TSSOP20 Available
PDAs, DVD/CD players, TFT LCD TVs/Monitors,
LCD Projectors, 2.1 channel audio systems,
Powered Speakers, USB audio. It is also ideal for For best performance, please refer to
other portable devices like Wireless Radios.
http://www.taimec.com.tw/English/EVM.htm
http://www.class-d.com.tw/English/EVM.htm
for PCB layout.
Tai-1 Microelectronics Corp. reserves the right to make changes to its products and services and to
discontinue any product or service without notice. Customers should obtain the latest relevant information for
reference. Testing and quality control techniques are used to screen the parameters. Testing of all
parameters of each product is not necessarily performed.
Copyright ©2005,Tai-1 Microelectronics Corp.
PDF created with pdfFactory trial version www.pdffactory.com
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1 page  
www.DataSheet4U.com
Tai-1 Microelectronics
www.taimec.com.tw / www.class-d.com.tw
Preliminary
TMPA208DS
Rev.1.0 June 27, 2006
OPERATING CHARACTERISTICS
TA=25。C, VDD=PVDD=5V, RL=8Ω speaker, Gain=18dB (unless otherwise noted)
PARAMETER
Output power per channel
PO
(Limited by thermal condition)
THD+N
Vn
SNR
Crosstalk
Total harmonic distortion plus noise
Thermal trip point
Thermal hysteresis
Integrated noise floor
Signal-to-noise ratio
Crosstalk between outputs
TEST CONDITIONS
f=1kHz, RL=3Ω, stereo operation
f=1kHz, RL=4Ω, stereo operation
f=1kHz, RL=8Ω, stereo operation
RL =8Ω, PO=1.2W, f=1kHz
20 Hz to 20 kHz, inputs ac grounded
VDD=AVDD=5V, PO=1W, RL=8Ω
VDD=AVDD=5V, PO=1W RL=8Ω
MIN
TYP
2.5
2
1.25
0.4％
150
20
85
95
-68
MAX
UNIT
W
W
W
。C
。C
µVrms
dB
dB
VOLTAGE RANGE OF “VOLUME” AT DIFFERENT VDD
VDD
5V
3.6V
3V
MAX
2.8V
1.9V
1.3V
MIN
0V
0V
0V
VOLTAGE GAIN AT TA=25。C, RL=8Ω
VDD=PVDD=5V
5V
3.6V
3V
VOLTAGE GAIN
18dB/-27dB
18dB/-27dB
16dB/-27dB
VOLTAGE of VOLUME
2.8V/0V
1.9V/0V
1.4V/0V
Copyright ©2005,Tai-1 Microelectronics Corp.
PDF created with pdfFactory trial version www.pdffactory.com
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet TMPA208DS.PDF ] | |
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