參數(shù)資料
型號： TLV320DAC26IRHBG4
英文描述： LOW POWER STEREO AUDIO DAC WITH HEADPHONE/SPEAKER AMPLIFIER
中文描述： 低功耗立體聲音頻DAC耳機(jī)/揚(yáng)聲器放大器
文件頁數(shù)： 22/46頁
文件大?。?/td> 452K
代理商： TLV320DAC26IRHBG4
SLAS428 AUGUST 2004
www.ti.com
22
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0
0
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100
PO Output Power mW
150
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2 VPP
T
2.402 VPP
Figure 17. THD vs Output Power Delivered to an an 8- Load (25 C, AVDD = DRVDD = 3.3 V, DVDD = 1.8
V, DAC Output Swing Set to 2 V and 2.4V, and Short-Circuit Protection Disabled)
100
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0
2.7
2.8
2.9
3
AVDD, DRVDD V
3.1
3.2
3.3
3.4
3.5
3.6
T
Figure 18. THD vs AVDD, DRVDD Supply Voltage (25 C When Driving a 1 dB, 1-kHz Sinewave From the
DAC Into an 8- Load, with DAC Output Swing Set to 2.4 V, and Short-Circuit Protection Disabled)
The ’DAC26 incorporates a programmable short-circuit detection/protection function with different modes of operation.
During the insertion or removal of a headphone plug from the jack, the output pins of the drivers may be accidentally shorted,
causing the part to potentially draw a huge current, which may cause the power supply voltages to dip. Bits D8D7 of
REG1DH/Page2 control how the short-circuit detection/protection operates in the ’DAC26. One option is to fully disable
short-circuit protection, which also enables the audio output drivers to deliver more power to a low-impedance load (such
as an 8-
speaker). However, care must be taken to prevent any short-circuit from occurring while the part is in this mode.
A second programmable configuration enables current-limiting in the audio output drivers, so that excessive currents
cannot be provided if the outputs are shorted. It also enables the internal short-circuit detection function, which can detect
excess current being drawn from the drivers and set a short-circuit detect flag (Page2, REG1DH, bit D6). This flag can
be read by the user to power down the drivers if desired. This flag is cleared only if the short-circuit condition is removed.
If the user does not monitor this flag and powers down the drivers when a short-circuit occurs, the current-limiting prevents
excessive currents from being drawn, but power dissipation is higher due to this limited current flowing through the short.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TLV320DAC26IRHBR 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Lo-Pwr Ster DAC w/Hdphn/Spkr Amp RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
TLV320DAC26IRHBRG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Lo-Pwr Ster DAC w/Hdphn/Spkr Amp RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
TLV320DAC3100 制造商:TI 制造商全稱:Texas Instruments 功能描述:Low-Power Stereo Audio DAC With Audio Processing and Mono Class-D Speaker Amplifier
TLV320DAC3100EVM-U 功能描述:音頻 IC 開發(fā)工具 TLV320DAC3100EVM-U 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
TLV320DAC3100IRHBR 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Low-Pwr Stereo Audio DAC RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換器數(shù)量: 分辨率:16 bit 接口類型:I2S, UBS 轉(zhuǎn)換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數(shù)量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel
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