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參數(shù)資料
| 型號： | PCM1754DBQR |
| 英文描述： | 24-BIT, 192 kHz SAMPLING ENHANCED MULTI-LEVEL, DELTA-SIGMA, AUDIO DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 24位192千赫采樣增強的多級Δ-Σ，音頻數(shù)字模擬轉換器 |
| 文件頁數(shù)： | 23/33頁 |
| 文件大小： | 309K |
| 代理商： | PCM1754DBQR |
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PCM1753
PCM1754
PCM1755
SLES092A – OCTOBER 2003 – REVISED AUGUST 2004
www.ti.com
23
ZREV: Zero Flag Polarity Select
Default value: 01h
ZREV = 0
ZREV = 1
High on zero flag pins indicates a zero detect (default)
Low on zero flag pins indicates a zero detect
The ZREV bit allows the user to select the polarity of zero flag pins.
AZRO: Zero Flag Function Select
Default value: 0
AZRO = 0
AZRO = 1
L-/R-channel independent zero flags (default)
L-/R-channel common zero flag
The AZRO bit allows the user to select the function of zero flag pins.
AZRO = 0:
Pin 11: ZEROR, zero flag output for R-channel
Pin 12: ZEROL, zero flag output for L-channel
Pin 11: ZEROA, zero flag output for L-/R-channels
Pin 12: NA, not assigned
AZRO = 1:
ANALOG OUTPUTS
The PCM1753/54/55 includes two independent output channels, V
OUT
L and V
OUT
R. These are unbalanced
outputs, each capable of driving 4 V p-p typical into a 5-k
ac-coupled load. The internal output amplifiers for
V
OUT
L and V
OUT
R are biased to the dc common-mode (or bipolar zero) voltage, equal to 0.5 V
CC
.
The output amplifiers include an RC continuous-time filter, which helps to reduce the out-of-band noise energy
present at the DAC outputs due to the noise shaping characteristics of the PCM1753/54/55 delta-sigma D/A
converters. The frequency response of this filter is shown in Figure 26. By itself, this filter is not enough to
attenuate the out-of-band noise to an acceptable level for many applications. An external low-pass filter is
required to provide sufficient out-of-band noise rejection. Further discussion of DAC post-filter circuits is
provided in the
Applications Information
section of this data sheet.
60
50
40
30
20
10
0
10
f – Frequency – kHz
L
LEVEL
vs
FREQUENCY
0.1
100
1k
10k
1
10
Figure 26. Output Filter Frequency Response
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCM1754DBQRG4 | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 192kHz Stereo Audio DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)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(shù)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 |
| PCM1754-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:24-BIT 192-kHz SAMPLING ENHANCED MULTI-LEVEL DELTA-SIGMA AUDIO DIGITAL-TO-ANALOG CONVERTER |
| PCM1754TDBQRQ1 | 功能描述:音頻數(shù)/模轉換器 IC AC 106dB SNR Stereo DAC RoHS:否 制造商:Texas Instruments 轉換器數(shù)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(shù)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 |
| PCM1755 | 制造商:BB 制造商全稱:BB 功能描述:24-BIT, 192 kHz SAMPLING ENHANCED MULTI-LEVEL, DELTA-SIGMA, AUDIO DIGITAL-TO-ANALOG CONVERTER |
| PCM1755DBQ | 功能描述:音頻數(shù)/模轉換器 IC PCM175x: 24-Bit Multi 192kHz Samp RoHS:否 制造商:Texas Instruments 轉換器數(shù)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(shù)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 |
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