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參數資料
| 型號： | PCM1719E |
| 英文描述： | Stereo Audio DIGITAL-TO-ANALOG CONVERTER |
| 中文描述： | 立體聲音頻數字模擬轉換器 |
| 文件頁數： | 11/15頁 |
| 文件大小： | 218K |
| 代理商： | PCM1719E |
11
PCM1719
FIGURE 7. Typical Circuit Connection.
TYPICAL APPLICATION CIRCUIT
Figure 7 shows the typical application circuit. In this circuit,
V
DD
, V
CC
, and PV
CC
are connected to a common analog
power supply. It is possible to use separate analog and
digital power supplies for PCM1719. If separate supplies are
used, the difference voltage between the supplies must be
less than
±
0.1V. PCM1719’s headphone amplifier allows for
high current flow from the outputs to ground. To keep the
high load current from affecting the DAC’s performance,
the headphone jack ground should be connected to a low-
impedance ground plane. Interference from the headphone
amplifier can also be minimized by using a separate power
supply for PV
CC
, but avoid power supply deltas greater than
±
0.1V.
Bypassing and decoupling capacitors should be placed as
close as possible to the device pin. The capacitance be-
tween PCOM (pin 12) and/or COM (pin 21) to ground can
be reduced to 1
μ
F, but this may decrease performance of
the PCM1719’s internal analog low-pass filter. The 10
μ
F
capacitor shown between COM and analog ground is used
to set the pole for the PCM1719’s internal low-pass filter.
It is also important to limit the measurement bandwidth of
the PCM1719 to 20kHz during performance evaluation. By
definition, delta-sigma DACs have a large amount of en-
ergy beyond the audio band. Including this energy in
THD+N measurements will not demonstrate the true in-
band performance of PCM1719.
28
1
4
5
6
24
25
26
XTO
XTI
LRCIN
DIN
BCKIN
MD
MC
ML
CLKO
V
CC
AGND
COM
ZERO
V
OUT
R
P
IN
R
P
IN
L
V
OUT
L
PCOM
P
OUT
R
P
OUT
L
9
11
18
20
12
13
16
23
17
27
19
10
21
7
10pF to 22pF
System Clock
(256f
S
/384f
S
)
10pF to 22pF
XTAL
2
3
V
DD
+
+
DGND
V
DD
PV
CC
PAGND
PCM
Audio
Data
Processer
(DSP)
Function
Control
Processor
(MPU)
Reset
Mute
Post Low Pass
Filter
(1)
10μF
10μF
+
10μF
+
10μF
+
Post Low Pass
Filter
(1)
10μF
+
+
100μF
32
10k
10k
4.7k
+
470μF
32
Line Out
Headphone Out
15
14
RSTB
PMUTE
0.1μF to 10μF
Bypass Capacitor
0.1μF to 10μF
Bypass Capacitor
0.1μF to 10μF Bypass Capacitor
PCM1719
+5.0V
Analog Power
Supply
NOTE: (1) Either passive or active, depending on application.
相關PDF資料 |
PDF描述 |
|---|---|
| PCM1720 | Stereo Audio DIGITAL-TO-ANALOG CONVERTER MPEG2/AC-3 COMPATIBLE |
| PCM1772 | LOW VOLTAGE AND LOW POWER STEREO AUDIO DIGITAL TO ANALOG CONVERTER WITH LINEOUT AMPIIFIER |
| PCM1772PW | LOW VOLTAGE AND LOW POWER STEREO AUDIO DIGITAL TO ANALOG CONVERTER WITH LINEOUT AMPIIFIER |
| PCM1772PWR | LOW VOLTAGE AND LOW POWER STEREO AUDIO DIGITAL TO ANALOG CONVERTER WITH LINEOUT AMPIIFIER |
| PCM1772RGA | LOW VOLTAGE AND LOW POWER STEREO AUDIO DIGITAL TO ANALOG CONVERTER WITH LINEOUT AMPIIFIER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PCM1719E/2K | 功能描述:數模轉換器- DAC SoundPlus(TM) Stereo Audio DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| PCM1719E/2KG4 | 功能描述:數模轉換器- DAC SoundPlus(TM) Stereo Audio DAC RoHS:否 制造商:Texas Instruments 轉換器數量:1 DAC 輸出端數量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| PCM1719EG4 | 功能描述:音頻數/模轉換器 IC SoundPlus(TM) Stereo Audio DAC RoHS:否 制造商:Texas Instruments 轉換器數量: 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 |
| PCM-172 | 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 |
| PCM1720 | 制造商:BB 制造商全稱:BB 功能描述:Stereo Audio DIGITAL-TO-ANALOG CONVERTER MPEG2/AC-3 COMPATIBLE |
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