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參數(shù)資料
| 型號： | PCM1772PWR |
| 元件分類： | DAC |
| 英文描述： | LOW VOLTAGE AND LOW POWER STEREO AUDIO DIGITAL TO ANALOG CONVERTER WITH LINEOUT AMPIIFIER |
| 中文描述： | 低電壓和低功耗立體聲音頻數(shù)模轉(zhuǎn)換器與線路輸出AMPIIFIER |
| 文件頁數(shù)： | 25/29頁 |
| 文件大?。?/td> | 309K |
| 代理商： | PCM1772PWR |
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SLES010D – SEPTEMBER 2001 – REVISED MAY 2004
www.ti.com
25
ATT CTRL START
Level Change Point
L-Channel
(1.5 kHz)
R-Channel
(1 kHz)
Figure 28. Example of Zero Cross Attenuation
PWRD: Power Down Control
Default Value: 0
PWRD = 0
PWRD = 1
Normal operation (default)
Power-down state
This bit is used to enter into low-power mode. Note that PWRD has no reset function.
When this bit is set to 1, the PCM1772 device enters low-power mode, and all digital circuits are reset except the
register states which remain unchanged.
ANALOG IN/OUT
LINE OUTPUT (STEREO)
The PCM1772 and PCM1773 devices have two independent lineout amplifiers, and each amplifier output is provided at
the V
OUT
L and V
OUT
R terminals. The capability of line output is designed for driving a 10-k
minimum load.
Monaural Output (BTL Mode/Monaural Speaker)
When the user needs monaural output, the PCM1772 device can provide it. The PCM1772 device has RINV bit on control
register 03. Because this bit allows the user to invert the polarity of the line output for the right channel, the user can create
a monaural output by summing the line output for left and right channels through the external power amplifier or headphone
amplifier. The RINV bit is recommended to be 0 during power-up/-down sequence for minimizing audible pop noise.
Analog Input
The PCM1772 and PCM1773 devices have an analog input, AIN (terminal 10). The AMIX bit (PCM1772) or the AMIX
terminal (PCM1773) allows the user to mix AIN with the line outputs (V
OUT
L and V
OUT
R) internally. When in MIXING mode,
an ac-coupling capacitor is needed for AIN. But if AIN is not used, AIN must be open and the AMIX bit (PCM1772) must
be disabled or the AMIX terminal (PCM1773) must be low.
Because AIN does not have an internal low-pass filter, it is recommended that the bandwidth of input signal into AIN is
limited to less than 100 kHz. The source of signals connected to AIN must be connected by low impedance.
Although the maximum input voltage on AIN is designed to be as large as 0.584V
CC2
[peak-to-peak], the user must
attenuate the input voltage on AIN and control digital input data so that each line output (V
OUT
L and V
OUT
R) does not
exceed 0.75 V
CC2
[peak-to-peak] during mixing mode.
V
COM
Output
One unbuffered common-mode voltage output terminal, V
COM,
is brought out for decoupling purposes. This terminal is
nominally biased to a dc voltage level equal to 0.5 V
CC2
and connected to a 10-
μ
F capacitor. In the case of a capacitor
smaller than 10
μ
F, pop noise can be generated during the power-on/-off or power-up/-down sequences.
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| PCM1773PW | LOW VOLTAGE AND LOW POWER STEREO AUDIO DIGITAL TO ANALOG CONVERTER WITH LINEOUT AMPIIFIER |
| PCM1773PWR | LOW VOLTAGE AND LOW POWER STEREO AUDIO DIGITAL TO ANALOG CONVERTER WITH LINEOUT AMPIIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
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| PCM1772PWRG4 | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Lo-Vlt & Lo-Pwr Ster DAC w/Lineout 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 |
| PCM1772RGA | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Lo-Vlt & Lo-Pwr Ster DAC w/Lineout 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 |
| PCM1772RGAG4 | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Lo-Vlt & Lo-Pwr Ster DAC w/Lineout 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 |
| PCM1772RGAR | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Lo-Vlt & Lo-Pwr Ster DAC w/Lineout 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 |
| PCM1772RGARG4 | 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC Lo-Vlt & Lo-Pwr Ster DAC w/Lineout 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 |
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