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TPA2005D1-Q1

更新时间： 2024-11-10 03:03:43
品牌 Logo 应用领域
德州仪器 - TI 放大器功率放大器LTE
页数 文件大小 规格书
24页 868K
描述
1.4-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER

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TPA2005D1-Q1 数据手册

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TPA2005D1-Q1  
www.ti.com  
SLOS474–AUGUST 2005  
1.4-W MONO FILTER-FREE CLASS-D AUDIO POWER AMPLIFIER  
FEATURES  
•
Space Saving Package  
(1)  
•
•
•
Qualification in Accordance With AEC-Q100  
– 3 mm x 3 mm QFN package (DRB)  
Qualified for Automotive Applications  
– 2,5 mm x 2,5 mm MicroStar Junior™  
BGA Package (ZQY)  
Customer-Specific Configuration Control Can  
Be Supported Along With Major-Change  
Approval  
– 3 mm x 5 mm MSOP PowerPAD™ Package  
(DGN)  
•
•
1.4 W Into 8 Ω From a 5-V Supply at  
THD = 10% (Typ)  
– TPA2010D1 Available in 1,45 mm x 1,45 mm  
WCSP (YZF)  
Maximum Battery Life and Minimum Heat  
– Efficiency With an 8-Ω Speaker:  
• 84% at 400 mW  
APPLICATIONS  
•
Ideal for Wireless or Cellular Handsets and  
PDAs  
• 79% at 100 mW  
– 2.8-mA Quiescent Current  
– 0.5-µA Shutdown Current  
Only Three External Components  
DESCRIPTION  
The TPA2005D1 is a 1.4-W high-efficiency filter-free  
class-D audio power amplifier in a MicroStar Junior™  
BGA, QFN, or MSOP package that requires only  
three external components.  
•
– Optimized PWM Output Stage Eliminates LC  
Output Filter  
Features like 84% efficiency, -71-dB PSRR at  
217 Hz, improved RF-rectification immunity, and  
15-mm2 total PCB area make the TPA2005D1 ideal  
for cellular handsets. A fast start-up time of 9 ms with  
minimal pop makes the TPA2005D1 ideal for PDA  
applications.  
– Internally Generated 250-kHz Switching  
Frequency Eliminates Capacitor and  
Resistor  
– Improved PSRR (-71 dB at 217 Hz) and  
Wide Supply Voltage (2.5 V to 5.5 V)  
Eliminates Need for a Voltage Regulator  
In cellular handsets, the earpiece, speaker phone,  
and melody ringer can each be driven by the  
TPA2005D1. The device allows independent gain  
control by summing the signals from each function,  
– Fully Differential Design Reduces RF  
Rectification and Eliminates Bypass  
Capacitor  
while minimizing noise to only 48 µVRMS  
.
– Improved CMRR Eliminates Two Input  
Coupling Capacitors  
(1) Contact factory for details. Q100 qualification data available  
on request.  
APPLICATION CIRCUIT  
To Battery  
Internal  
Oscillator  
Actual Solution Size  
(MicroStar Junior BGA)  
V
DD  
C
S
R
R
I
+
–
IN–  
IN+  
C
S
V
O+  
PWM  
H–  
Bridge  
_
+
Differential  
Input  
V
O–  
I
2.5 mm  
R
R
I
GND  
I
Bias  
Circuitry  
SHUTDOWN  
6 mm  
TPA2005D1  
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, PowerPAD are trademarks of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2005, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
1234567...24

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