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參數資料
| 型號： | TPA2054D4YZKT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 0.94 W, 2 CHANNEL, AUDIO AMPLIFIER, BGA25 |
| 封裝： | 2.61 X 2.61 MM, GREEN, DSBGA-25 |
| 文件頁數： | 1/28頁 |
| 文件大小： | 949K |
| 代理商： | TPA2054D4YZKT |
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1
FEATURES
DESCRIPTION
APPLICATIONS
FMTuner
Codec
MP3
8 Speaker
Stereo
HeadphoneJack
Left
SE
Right
SE
Left
SE
Right
SE
8 Speaker
ABB
Mono+
Mono-
TPA2054D4
StereoClassD
plus
DirectPath
www.ti.com ..................................................................................................................................................................................................... SLOS607 – APRIL 2009
1.4 W/CH STEREO CLASS-D AUDIO SUBSYSTEM WITH DirectPath HEADPHONE
AMPLIFIER AND 3:1 INPUT MUX
23
Stereo Class-D Amp:
–
1.4 W into 8
from 5.0 V (10% THD + N)
The TPA2054D4 features a stereo Class-D power
amplifier along with a stereo DirectPath headphone
–
1.25 W into 8
from 5.0 V (1% THD + N)
amplifier. The TPA2054D4 has a mono differential
DirectPath Stereo Headphone Amplifier
input and two stereo single-ended (SE) inputs that
–
No Output Capacitors Required
can be configured as one stereo differential input.
Both input channels have a 32-step volume control
Independent Gain Select for Headphone
and the DirectPath headphone amplifier has a 4-level
Amplifier
gain control for coarse volume adjustment. All
Eight Programmable Maximum Headphone
amplifiers have output short-circuit and thermal-
Voltage Limits
overload protection.
Two Single-Ended or One Differential Stereo
The Class-D amplifiers deliver 1.25 W into 8
at 1%
Input
THD from a 5.0 V supply, and 700 mW from 3.6 V.
3:1 Input MUX with Mode Control
The DirectPath headphone amplifier features an
output voltage limiter to reduce the maximum output
32-Step Volume Control for Both Input
power to one of seven possible limits. The voltage
Channels
limiter is programmed through the I2C interface.
Independent Shutdown for Headphone and
DirectPath eliminates the need for external DC-
Class-D Amplifiers
blocking output capacitors to the headphones. The
Short-Circuit and Thermal-Overload Protection
built-in charge pump creates a negative supply
±8 kV HBM ESD Protection on Headphone
voltage for the headphone amplifier, allowing a 0-V
Outputs
DC bias at the output.
I2C Interface
The DirectPath headphone amplifier gains are +6 dB
25-Ball 2,61 mm × 2,61 mm WCSP
(default), 0 dB, –6 dB, and –14 dB, selected through
the I2C interface. This allows the headphone volume
to be different from the loudspeaker volume if both
are used simultaneously.
Smart Phones / Cellular Phones
Laptop Computers
The TPA2054D4 has a 3:1 input MUX for audio
source selection. The MUX has mode control which
Portable Gaming
directs the input-to-output signal path. Mode and gain
Portable Media Players
controls operate from a 1.8 V compatible I2C
interface.
SIMPLIFIED SYSTEM BLOCK DIAGRAM
The voltage supply range for both the Class-D
amplifiers and the headphone charge pump is 2.5 V
to 5.5 V. The Class-D amplifiers use a combined 7
mA and the headphone amplifier uses 10 mA of
typical
quiescent
current.
Total
supply
current
reduces to less than 2
A.
The TPA2054D4YZK is available in a 25-ball 2,61
mm × 2,61 mm WCSP package.
1
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.
2
DirectPath is a trademark of Texas Instruments.
3
I2C is a trademark of NXP Semiconductors.
PRODUCTION DATA information is current as of publication date.
Copyright 2009, 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.
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| TPA2080D1YZGEVM | 功能描述:音頻 IC 開發工具 TPA2080D1 Eval Mod RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
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| TPA2080D1YZGT | 功能描述:音頻放大器 2.2W Const Out Pwr Class-D Audio Amp RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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