參數(shù)資料
型號(hào)： DSD1792DB
元件分類： DAC
英文描述： 24 bit 192 khz SAMPLING ADVANCED SEGMENT AUDIO STEREO DIGITAL TO ANALOG CONVERTER
中文描述： 24位192千赫采樣高級(jí)分段音頻立體聲數(shù)模轉(zhuǎn)換器
文件頁(yè)數(shù)： 29/56頁(yè)
文件大?。?/td> 497K
代理商： DSD1792DB
SLES067A MARCH 2003 REVISED AUGUST 2003
www.ti.com
29
APPLICATION INFORMATION
APPLICATION CIRCUIT
The design of the application circuit is very important in order to actually realize the high S/N ratio of which the DSD1792
is capable. This is because noise and distortion that are generated in an application circuit are not negligible.
In the circuit of Figure 33, the output level is 2 V rms and 127 dB S/N is achieved.
The circuit of Figure 34 can realize the highest performance. In this case the output level is set to 4.5 V rms and 129 dB
S/N is achieved (stereo mode). In monaural mode, if the output of the L-channel and R-channel is used as a balanced
output, 132 dB S/N is achieved (see Figure 36).
Figure 35 shows a circuit for the DSD mode, which is a 4
th
-order LPF in order to reduce the out-of-band noise.
I/V Section
The current of the DSD1792 on each of the output pins (I
OUT
L+, I
OUT
L–, I
OUT
R+, I
OUT
R–) is 7.8 mA p-p at 0 dB (full scale).
The voltage output level of the I/V converter (Vi) is given by following equation:
Vi = 7.8 mA pp
×
R
f
(R
f
: feedback resistance of I/V converter)
An NE5534 op amp is recommended for the I/V circuit to obtain the specified performance. Dynamic performance such
as the gain bandwidth, settling time, and slew rate of the op amp affects the audio dynamic performance of the I/V section.
Differential Section
The DSD1792 voltage outputs are followed by differential amplifier stages, which sum the differential signals for each
channel, creating a single-ended I/V op-amp output. In addition, the differential amplifiers provide a low-pass filter function.
The op amp recommended for the IV circuit is the NE5534, and the op amp recommended for the differential circuit is the
Linear Technology LT1028, because their input noise is low.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DSD1792DBG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo 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
DSD1792DBR 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo 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
DSD1792DBRG4 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24B 192kHz Sampl Adv Segment Aud St 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
DSD1793 制造商:BB 制造商全稱:BB 功能描述:24 BIT 192 KHZ SAMPLING ADVANCED SEGMENT AUDIO STEREO DIGITAL TO ANALOG CONVERTER
DSD1793DB 功能描述:音頻數(shù)/模轉(zhuǎn)換器 IC 24-Bit 192kHz Smplng Adv Stg Stereo 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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