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TPA2005D1

SLOS369B 鈥?JULY 2002 鈥?REVISED DECEMBER 2002

1.1 W MONO FILTER FREE CLASS D AUDIO POWER AMPLIFIER

FEATURES

D

Maximum Battery Life and Minimum Heat

鈥?Efficiency With an 8-鈩?Speaker:

鈥?84% at 400 mW

鈥?79% at 100 mW

鈥?2.8-mA Quiescent Current

鈥?0.5-碌A(chǔ) Shutdown Current

APPLICATIONS

D

Ideal for Wireless or Cellular Handsets and

PDAs

DESCRIPTION

The TPA2005D1 is a 1.1-W high efficiency filter-free

class-D audio power amplifier in a MicroStar Junior錚?/div>

BGA package that requires only three external

components.

Features like 84% efficiency, 鈥?1-dB PSRR at 217 Hz,

improved RF-rectification immunity, and 15 mm

2

total

PCB area make the TPA2005D1 ideal for cellular

handsets. A fast start-up time of 9 ms with minimal pop

makes the TP2005D1 ideal for PDA applications.

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 while

minimizing noise to only 48

碌V

RMS

.

D

Only Three External Components

鈥?Optimized PWM Output Stage Eliminates

LC Output Filter

鈥?Internally Generated 250-kHz Switching

Frequency Eliminates Capacitor and

Resistor

鈥?Improved PSRR (鈥?1 dB at 217 Hz) and

Wide Supply Voltage (2.5 V to 5.5 V)

Eliminates Need for a Voltage Regulator

鈥?Fully Differential Design Reduces RF

Rectification and Eliminates Bypass

Capacitor

鈥?Improved CMRR Eliminates Two Input

Coupling Capacitors

APPLICATION CIRCUIT

To Battery

Internal

Oscillator

+

Differential

Input

鈥?/div>

RI

IN鈥?/div>

_

RI

+

IN+

GND

SHUTDOWN

Bias

Circuitry

TPA2005D1

PWM

H鈥?/div>

Bridge

VDD

CS

VO+

VO鈥?/div>

Actual Solution Size

(MicroStar Junior錚?BGA)

CS

RI

6 mm

2.5 mm

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.

This document contains information on products in more than one phase of

development. The status of each device is indicated on the page(s) specifying its

electrical characteristics.

Copyright

錚?/div>

2002, Texas Instruments Incorporated

標(biāo)準(zhǔn)包裝
1
類別
集成電路 (IC)
家庭
線性 - 音頻放大器
系列
-
類型
D 類
輸出類型
1-通道（單聲道）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量
1.45W x 1 @ 8 歐姆
電源電壓
2.5 V ~ 5.5 V
特點(diǎn)
差分輸入，短路保護(hù)和熱保護(hù)，關(guān)機(jī)
安裝類型
表面貼裝
供應(yīng)商設(shè)備封裝
15-BGA MICROSTAR JUNIOR（2.5x2.5）
封裝/外殼
15-VFBGA
包裝
剪切帶 (CT)
配用
296-20582-ND - EVAL MOD FOR TPA2005D1
其它名稱
296-15073-1

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