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參數資料
| 型號： | TLV320DAC26IRHB |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | DAC |
| 英文描述： | SERIAL INPUT LOADING, DAC WITH PROGRAMMABLE PLL, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁數： | 14/52頁 |
| 文件大小： | 872K |
| 代理商： | TLV320DAC26IRHB |
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TLV320DAC26
SLAS428 AUGUST 2004
www.ti.com
21
’DAC26
HPR
HPL
VGND
Headphone Jack
’DAC26
HPR
HPL
VGND
Headphone Jack
Figure 15. Headphone Configurations, AC-Coupled (left) and Capless (right)
The audio output drivers in high power mode can also be configured to drive a mono differential signal into a speaker load
of 8-
minimum. The speaker load should be connected differentially between the HPR and HPL outputs. Several options
are possible for playback of DAC data in this case. If a stereo digital signal is available, this signal can be sent in normal
stereo fashion to the audio DAC. The programmable digital effects filters can then be used to invert one channel, so that
the signal applied across the speaker load is (LEFT + RIGHT), or effectively a mono-mix of the two channels. A simple
example of how to implement this inversion using the programmable filters is to set the coefficients as follows:
Leftchannel coefficients:
N0=32767, N1=0, N2=0, N3=32767, N4=0, N5=0
D1=0, D2=0, D4=0, D5=0
Rightchannel coefficients: N0=32767, N1=0, N2=0, N3=32767, N4=0, N5=0
D1=0, D2=0, D4=0, D5=0
This provides no spectral shaping; it only inverts the right channel relative to the left channel, such that the signals at HPL
and HPR are (LEFT) and (RIGHT), with the signal across the speaker then being LEFT+ RIGHT. In a general case when
spectral shaping is also desired, the inversion can be accomplished simply by setting N0, N1, and N2 coefficients of one
channel to the negative of the values set for the other channel. Note that the programmable filtering must be enabled by
setting bit D1/REG05H/Page2 to 1.
To enable the output drivers to deliver higher output power, the DAC output swing should be set to its highest level by setting
bit D10D9/REG06H/Page2 to 11. It is possible to increase power even further by disabling the built-in short-circuit
protection by programming bit D8 of Reg1DH/Page2 to 1. In this case care must be taken so a short-circuit at the output
does not occur. Figure 16 shows a typical jack configuration using a capless output configuration. In this configuration, the
’DAC26 drives the loudspeaker whenever headphones are not inserted in the jack and drives the headphones whenever
it is inserted in the jack.
’DAC26
HPR
HPL
VGND
Headphone Jack
Loud Speaker
Figure 16. Speaker Connection
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| TLV320DAC26IRHBG4 | 功能描述:音頻數/模轉換器 IC 18-Bit Univ Bus Drv With 3-State Outputs RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
| TLV320DAC26IRHBR | 功能描述:音頻數/模轉換器 IC Lo-Pwr Ster DAC w/Hdphn/Spkr Amp RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-32 封裝:Reel |
| TLV320DAC26IRHBRG4 | 功能描述:音頻數/模轉換器 IC Lo-Pwr Ster DAC w/Hdphn/Spkr Amp RoHS:否 制造商:Texas Instruments 轉換器數量: 分辨率:16 bit 接口類型:I2S, UBS 轉換速率: 信噪比:98 dB 工作電源電壓:5 V DAC 輸出端數量:2 工作溫度范圍:- 25 C to + 85 C 電源電流:23 mA 安裝風格: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 開發工具 TLV320DAC3100EVM-U 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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