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參數(shù)資料
| 型號： | TPA2050D4YZKR |
| 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(shù)： | 13/29頁 |
| 文件大小： | 931K |
| 代理商： | TPA2050D4YZKR |
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Class-D Output Amplifiers
DirectPath Headphone Amplifier
HEADPHONE OUTPUT LIMITER LOCKOUT
MAXIMUM HEADPHONE POWER REGULATOR
HEADPHONE GAIN VALUES
SLOS544 – JULY 2008....................................................................................................................................................................................................... www.ti.com
To enable both Class-D power amplifiers, set the PA_Enable bit (Register 2, Bit 1) to logic high. The left and
right channel Class-D outputs cannot be separately activated. Total Class-D section typical current is 7 mA when
active and less than 1
A when deactivated.
All Class-D outputs have short-circuit current protection and thermal overload protection. The PAL_Fault and
PAR_Fault bits (Register 1, Bits 4 and 3) indicate an over-current event on the left and right Class-D channel
outputs. These bits are clear-on-write; only logic low can be written.
The Thermal bit (Register 1, Bit 1) goes to logic high if a thermal shutdown event occurs. It returns to logic low
once the device temperature returns below 150°C.
Set the HPL_Enable bit (Register 2, Bit 3) to logic high to enable the headphone left output and the HPR_Enable
bit (Register 2, Bit 2) to logic high to enable the headphone right output. The headphone amplifier draws 10 mA
of typical supply current with both left and right outputs active and less than 1
A when deactivated.
The HPL_Fault and HPR_Fault bits (Register 1, Bits 2 and 1) indicate an over-current event on the left and right
headphone outputs. These bits are clear-on-write; only logic low can be written.
Setting the LIM_Lock bit (Register 3, Bit 7) to logic high prevents any register changes to the HP_Vout byte
(Register 7, Bits 4-2) and the LIM_Lock bit itself. The LIM_Lock bit will remain locked at logic high until the power
supply is deactivated or logic low is applied to the RESET pin. All volume control, mux modes and shutdown
registers remain writable regardless of LIM_Lock status.
The HP_Vout byte (Register 7, Bits 4-2) sets the maximum output voltage from the headphone amplifiers. This is
useful for limiting the maximum output power to the headphones. The HP_Vout byte sets the internally regulated
supply voltage to the headphone amplifiers according to the table below. The table also shows the equivalent
10% THD output into 16
and 32 loads.
MAX HEADPHONE
POUT,MAX INTO 16
POUT,MAX INTO 32
VOUT,MAX
OUTPUT BYTE: HP_VOUT[2:0]
(10% THD)
000
±VDDHP(1)
130 mW (at VDDHP = 3.6 V)
65 mW (at VDDHP = 3.6 V)
001
±1.13 V
40 mW
20 mW
010
±0.54 V
9 mW
4.5 mW
011
±0.38 V
4.5 mW
2.3 mW
100
±0.315 V
3.1 mW
1.6 mW
101
±0.253 V
2.0 mW
1.0 mW
110
±0.227 V
1.6 mW
0.8 mW
111
±0.196 V
1.2 mW
0.6 mW
(1)
With no load. Maximum output voltage decreases as load resistance decreases.
For the DirectPath headphone amplifier, left and right output channels
HEADPHONE GAIN REGISTER BYTE:
NOMINAL GAIN
HP_GAIN[1:0]
00
0 dB
01
–6 dB
10
–12 dB
11
–20 dB
20
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPA2050D4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPA2050D4YZKR | 制造商:Texas Instruments 功能描述:Audio Power Amplifier IC |
| TPA2050D4YZKT | 功能描述:音頻放大器 1.4 W/CH Stereo Class-D Audio Subsys RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| TPA2051D3 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:2.9 W/Channel Mono Class-D Audio Subsystem with DirectPath? Headphone Amplifier & SpeakerGuard? |
| TPA2051D3AYFFR | 制造商:TI 功能描述:Audio Subsystem |
| TPA2051D3YFFEVM | 功能描述:音頻 IC 開發(fā)工具 TPA2051D3YFF Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)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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