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參數(shù)資料
| 型號： | PCM1737E |
| 英文描述： | 24-Bit, 192kHz Sampling Enhanced Multi-Level, Delta-Sigma, Audio DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 24位192kHz采樣增強的多級，Δ-Σ，音頻數(shù)字模擬轉換器 |
| 文件頁數(shù)： | 17/27頁 |
| 文件大?。?/td> | 180K |
| 代理商： | PCM1737E |
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24
PCM1737
APPLICATIONS INFORMATION
CONNECTION DIAGRAMS
A basic connection diagram is shown in Figure 13, with the
necessary power supply bypassing and decoupling compo-
nents. Burr-Brown recommends using the component values
shown in Figure 13 for all designs.
The use of series resistors (22
to 100) are recommended
for SCLK, LRCK, BCLK, DATA inputs. The series resistor
combines with the stray PCB and device input capacitance
to form a low-pass filter which reduces high frequency noise
emissions and helps to dampen glitches and ringing present
on clock and data lines.
POWER SUPPLIES AND GROUNDING
The PCM1737 requires a +5V analog supply and a +3.3V
digital supply. The +5V supply is used to power the DAC
analog and output filter circuitry, while the +3.3V supply is
used to power the digital filter and serial interface circuitry.
For best performance, the +3.3V supply should be derived
from the +5V supply using a linear regulator, as shown in
Figure 13. Burr-Brown’s REG1117-3.3 is an ideal choice for
this application.
Proper power supply bypassing is shown in Figure 13. The
bypass capacitors should be tantalum or aluminum electro-
lytic, while the 0.1
F capacitors are ceramic (X7R type is
recommended for surface-mount applications).
D/A OUTPUT FILTER CIRCUITS
Delta-sigma D/A converters utilize noise-shaping techniques
to improve in-band Signal-to-Noise Ratio (SNR) perfor-
mance at the expense of generating increased out-of-band
noise above the Nyquist Frequency, or fS/2. The out-of-
band noise must be low-pass filtered in order to provide the
optimal converter performance. This is accomplished by a
combination of on-chip and external low-pass filtering.
Figures 12a and 14 show the recommended external low-
pass active filter circuits for dual and single-supply applica-
tions. These circuits are 2nd-order Butterworth filters using
the Multiple Feedback (MFB) circuit arrangement, which
reduces sensitivity to passive component variations over
frequency and temperature. For more information regarding
MFB active filter design, please refer to Burr-Brown Appli-
cations Bulletin AB-034.
FIGURE 14. Dual-Supply Filter Circuit.
FIGURE 13. Basic Connection Diagram.
+
LRCK
DATA
BCLK
CLKO
SCLK
V
SS
V
DD
TEST1
TEST2
V
CCR
GNDR
V
COMR
V
OUTR
GNDA
ML
MC
MDI
MDO
ZEROR
ZEROL
RSTB
NC
V
CCL
GNDL
V
COML
V
OUTL
V
CCA
From/To
Audio
Source
+3.3V
Regulator
Analog
Ground
R
S
(1)
C
1
C
2
To/From
Host
Controller
Zero Flag
Outputs
From Host or
Master Reset
To
Output
Filter
Circuits
+5V Analog
C
3
C
4
C
10
C
9
C
8
C
7
C
5
C
6
C
1, C4, C6, C9 = 10F Tantalum or Aluminum Electrolytic
C
2, C5 = 0.1F Ceramic
C
3, C10 = 1F Tantalum or Aluminum Electrolytic
C
7, C8 = 1-10F Aluminum Electrolytic
NOTE: (1) R
S = 20 to 100
PCM1737
x
R
1
R
3
R
4
R
2
C
1
C
2
V
IN
V
OUT
OPA2134
2
3
1
R
2
R
1
A
V ≈ –
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相關代理商/技術參數(shù) |
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|---|---|
| PCM1737E/2K | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 192kHz Smplg Enh Mltl D-S 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 |
| PCM1737E/2KG4 | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 192kHz Smplg Enh Mltl D-S 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 |
| PCM1737E-1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| PCM1737EG4 | 功能描述:音頻數(shù)/模轉換器 IC 24-Bit 192kHz Smplg Enh Mltl D-S 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 |
| PCM1738 | 制造商:BB 制造商全稱:BB 功能描述:24-Bit, 192kHz Sampling, Advanced Segment, Audio-Stereo DIGITAL-TO-ANALOG CONVERTER |
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