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參數(shù)資料
| 型號： | TPA6140A2YFFT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), VOLUME CONTROL CIRCUIT, PBGA16 |
| 封裝： | 1.6 X 1.6 MM, 0.4 MM PITCH, GREEN, DSBGA-16 |
| 文件頁數(shù)： | 7/30頁 |
| 文件大小： | 705K |
| 代理商： | TPA6140A2YFFT |
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INR+
INR-
INL+
INL-
AGND
SGND
OUTR
HPVSS
CPP
CPN
SW
HPVDD
OUTL
2.2
F
m
Vbat
CODEC
OUTR+
OUTR-
OUTL+
OUTL-
1 mF
SDA
SCL
AVDD
SDA
nHcoil
FM Tuner
2.2
H
m
2.2
F
m
TPA6140A2
www.ti.com................................................................................................................................................. SLOS598A – MARCH 2009 – REVISED OCTOBER 2009
INDUCTOR SELECTION
The TPA6140A2 requires one inductor for its DC/DC converter. The following table lists recommended inductors.
Inductors not shown on this table can be be used if they have similar performance characteristics.
When selecting an inductor observe the following rules:
Lower DCR increases DC/DC converter efficiency.
The minimum working inductance should never be below 1
μH.
Include temperature and aging derating factors into the inductor value calculations.
MANUFACTURER
PART NUMBER
TOKO
MDT2012-CH2R2A
LQM21PN2R2MC0D
Murata
LQH2MCN2R2M02L
BRL2012T2R2M
Taiyo Yuden
BRC1608T2R2M
GROUND SENSE FUNCTION
The ground sense pin, SGND, reduces ground-loop noise when the audio output jack is connected to a different
ground reference than codec and amplifier ground. Always connect the SGND pin to the headphone jack. This
reduces output offset voltage and eliminates turn-on pop. Figure 29 shows how to connect SGND when an FM
radio antenna function is implemented on the headphone wire. The nH coil and capacitor separate the RF signal
from the audio GND signal. In this case, SGND is used to eliminate the offset voltage that is generated from the
audio signal current and the RF coil low-frequency impedance.
The voltage difference between SGND and AGND cannot be greater than ±300 mV. The amplifier performance
degrades if the voltage difference between SGND and AGND is greater than ±300 mV.
Figure 29. Sense Ground
Copyright 2009, Texas Instruments Incorporated
15
Product Folder Link(s): TPA6140A2
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TPA6140A2YFFT | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC |
| TPA6141A2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CLASS-G DIRECTPATH? STEREO HEADPHONE AMPLIFIER |
| TPA6141A2YFFEVM | 功能描述:音頻 IC 開發(fā)工具 TPA6141A2YFF 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 |
| TPA6141A2YFFR | 功能描述:音頻放大器 25mW Class-G Direct Path St Headph 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 |
| TPA6141A2YFFT | 功能描述:音頻放大器 25mW Class-G Direct Path St Headph 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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