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參數(shù)資料
| 型號： | PCM1755DBQ |
| 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)： | 30/33頁 |
| 文件大小： | 309K |
| 代理商： | PCM1755DBQ |
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PCM1753
PCM1754
PCM1755
SLES092A – OCTOBER 2003 – REVISED AUGUST 2004
www.ti.com
30
Dynamic Range
Dynamic range is specified as A-weighted THD+N measured with a –60-dB full-scale, 1-kHz digital sine wave
stimulus at the input of the D/A converter. This measurement is designed to give a good indicator of how the
DAC performs given a low-level input signal.
The measurement setup for the dynamic range measurement is shown in Figure 37, and is similar to the
THD+N test setup discussed previously. The differences include the band limit filter selection, the additional
A-weighting filter, and the –60-dB full-scale input level.
S/PDIF
Receiver
Evaluation Board
DEM-DAI1753
PCM1753/54/55
2nd-Order
Low-Pass
Filter
AES17 Filter
Band Limit
Analyzer
and
Display
Digital
Generator
S/PDIF
Output
0 dB FS
(100% Full-Scale),
24-Bit,
1-kHz Sine Wave
Averaging
Mode
HPF = 400 Hz
LPF = 30 kHz
f
–3 dB
= 20.9 kHz
f
–3 dB
= 54 kHz or 108 kHz
Audio Precision System Two
Figure 36. Test Setup for THD+N Measurement
Idle Channel Signal-to-Noise Ratio
The SNR test provides a measure of the noise floor of the D/A converter. The input to the D/A is all-0s data,
and the dither function of the digital generator must be disabled to ensure an all-0s data stream at the input of
the D/A converter.
The measurement setup for SNR is identical to that used for dynamic range, with the exception of the input
signal level.
(See the note provided in Figure 37).
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCM1755DBQG4 | 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 |
| PCM1755DBQR | 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 |
| PCM1755DBQRG4 | 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 |
| PCM1756DBQR | 制造商:Texas Instruments 功能描述: |
| PCM-176 | 功能描述:電線鑒定 Pre-Printed WM Card, Vinyl Cloth, .22" W RoHS:否 制造商:TE Connectivity / Q-Cees 產品:Labels and Signs 類型: 材料:Vinyl 顏色:Blue 寬度:0.625 in 長度:1 in |
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