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参数资料
| 型号： | TPA6045A4CRHBR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 音频／视频放大 |
| 英文描述： | 2.6 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC32 |
| 封装： | QFN-32 |
| 文件页数： | 10/30页 |
| 文件大小： | 1147K |
| 代理商： | TPA6045A4CRHBR |
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TPA6045A4C
LOUT+
SPKR_RIN–
SPKR_RIN+
SPGND
SPVDD
CPVDD
CPVSS
HPVSS
HP_OUTR
HP_OUTL
CPGND
C1P
C1N
LOUT-
BYPASS
GAIN1
GAIN0
VDD
SGND
HP_INL
HP_INR
REG_OUT
REG_EN
SPKRRight(+)Input
SPKRRight(–)Input
SPKR_LIN+
SPKRLeft(+)Input
SPKRLeft(–)Input
SPKR_LIN–
4.5V-5.5V
10 F
m
Left
Speaker
Headphone
Output
HPVDD
SPVDD
ROUT+
ROUT-
Right
Speaker
3V-5.5V
1 F
m
SPGND
SPKR_EN
HP_EN
HeadphoneEnable
SpeakerEnable
0.47 mF
RegulatorEnable
{
4-Step
GainControl
2.2 mF
0.1mF
1 mF
4.5 V - 5.5 V
3.3V
(Output)
1 F
m
HP RightInput
HP LeftInput
0.47 F
m
0.47 F
m
0.47 F
m
0.47 F
m
1 F
m
1 F
m
1 F
m
1 F
m
Power Enable Modes
Speaker Amplifier Description
Fully Differential Amplifier
SLOS614 – OCTOBER 2008.............................................................................................................................................................................................. www.ti.com
Figure 39. Differential Input Application Circuit
The TPA6045A4C allows disable of any or all of the main circuit blocks when not in use in order to reduce
operating power to an absolute minimum. The SPKR_EN control can be used to disable the speaker amplifier
while the HP_EN can be used separately to turn off the headphone amplifier. The LDO also has an independent
power control, REG_EN. With all circuit blocks disabled, the supply current in shutdown mode is only 5
A. See
the General DC Electrical Characteristics for operating currents with each circuit block operating independently.
The speaker amplifier is capable of driving 2.1 W/ch of continuous RMS power into a 4-
load at 5 V. An internal
4-step control allows variation of the gain from 10 dB to 21.6 dB.
The TPA6045A4C speaker amplifier is a fully differential amplifier with differential inputs and outputs. The fully
differential architecture consist of a differential amplifier and a common mode amplifier. The differential amplifier
ensures that the amplifier outputs a differential voltage that is equal to the differential input times the gain. The
common-mode voltage at the output is biased around VDD/2 regardless of the common-mode voltage at the
input.
18
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPA6045A4C
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相关代理商/技术参数 |
参数描述 |
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| TPA6047A4 | 制造商:TI 制造商全称:Texas Instruments 功能描述:2-W STEREO AUDIO POWER AMPLIFIER WITH DirectPatTM STEREO HEADPHONE DRIVE AND REGULATOR |
| TPA6047A4RHBR | 功能描述:音频放大器 2W Stereo Audio Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA6047A4RHBRG4 | 功能描述:音频放大器 2W Stereo Audio Pwr Amp RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| TPA6100A2 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:50-mW Ultra-Low Voltage Audio Power Amp |
| TPA6100A2D | 功能描述:音频放大器 Ultra Low Voltage Stereo Headphone RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
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