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參數(shù)資料
| 型號： | TMPA205DS |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2.45-W/Ch STEREO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER |
| 中文描述： | 2.45-W/Ch立體無濾波器D類音頻功率放大器 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 119K |
| 代理商： | TMPA205DS |
2003, Tai-1 Microelectronics Corp.
1
2.45-W/Ch STEREO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER
GENERAL DESCRIPTION
The TMPA205DS is a stereo class-D filter
–
free audio power
amplifier IC. It delivers up to 2.45W/Ch power into a 4 ohm
load or 1.5W/Ch power into an 8 ohm load. Two patents are
pending.
With common mode input structure, TMPA205DS requires no
input or output coupling capacitors. It also features high
Common Mode Rejection Ratio and Power Supply Rejection
Ratio.
For multiple-input applications, independent gain control and
corner frequency can be implemented by summing the input
sources through resistor ratio and input capacitor values.
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
APPLICATIONS
（
Pulse Width Modulation
）
.
Multimedia application includes Cellular Phones, PDAs,
DVD/CD players, TFT LCD TVs/Monitors, 2.1 channel/5.1
channel audio systems, USB audio. It is also ideal for other
portable devices like Wireless Radios.
REFERENCE CIRCUIT
FEATURES
2.5V to 5.5V Single Supply
Up to 5.3W/Ch Max. Power or 2.45W/Ch rms.
Up to 92% Power Efficiency
3.5mA Quiescent Current
Less Than 0.3uA Shutdown Current
Popless Power-Up, Shutdown and Recovery
Differential 250 KHz PWM Allows Bridge-Tied Load to
Doubles Output Power and Eliminates LC Output Filter
Common Mode Structure Requires No Input Capacitors
BTL Output Requires No Output Capacitors
Thermal Shutoff and Automatic Recovery
Short-Circuit Protection
Differential Signal Processing Improves CMRR &
Eliminates Power Regulation & Bypass Capacitor
Package
：
TSSOP, PDIP, SOP Available
（
Please refer to TMPA002.APP for application
）
Differential
Input
Control
Circuitry
PWM
Power
Drive
-
+
SDN1
V
DD
To PS
Cs
IN1-
IN1+
Ri1
Ri1
Vi1
-
Vi1
+
Vo1
+
Vo1
-
Differential
Input
PWM
Power
Drive
-
+
SDN2
GND
IN2-
IN2+
Ri2
Ri2
TMPA205DS
Vi2
-
Vi2
+
Vo2
+
Vo2
-
1
2
3
4
5
6
7
8
9
10
19
18
17
16
15
14
13
12
11
20
Vo1-
GND
SDN1
VDDA
GNDA
IN2+
IN2-
GND
Vo2+
VDD
Vo1+
GND
IN1-
IN1+
GNDA
VDDA
SDN2
GND
Vo2-
VDD
（
Please email david@taimec.com.tw for complete datasheet.
）
PDF created with pdfFactory Pro trial version
www.pdffactory.com
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| TMPA208DS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:2.5W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH VOLUME CONTROL |
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