- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄379823 > CD6420 (Cirrus Logic, Inc.) FULL DUPLEX SPEAKERPHONE CHIP PDF資料下載
參數(shù)資料
| 型號： | CD6420 |
| 廠商： | Cirrus Logic, Inc. |
| 英文描述： | FULL DUPLEX SPEAKERPHONE CHIP |
| 中文描述： | 的全雙工免提通話芯片 |
| 文件頁數(shù)： | 21/52頁 |
| 文件大小： | 815K |
| 代理商： | CD6420 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁當(dāng)前第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
CS6420
DS205PP2
21
Noise and Grounding
Since the CS6420 is a mixed-signal integrated cir-
cuit, the system designer must pay special attention
to layout and decoupling to minimize noise con-
cerns. The three best methods to reduce noise when
using the CS6420 are to have good decoupling of
power supplies, separation of analog and digital
power and ground, and careful board layout.
Figure 6 shows the suggested placement of decou-
pling capacitors for the power supplies. Note that
the trace length from the power pin to the capaci-
tors is minimized. Also note that the smaller valued
capacitor is placed closer to the pin than the larger
valued capacitor. The smaller capacitor decouples
high frequency noise and the larger capacitor atten-
uates lower frequencies.
The separation of analog and digital power and
ground is done in two ways. The power is separated
by deriving the digital power for the CS6420 from
the analog through a ferrite bead to isolate analog
from digital, as shown in Figure 7. The ferrite bead
serves as a low-pass filter to remove CS6420 digi-
tal switching noise from the analog power supply.
The ground is separated by isolating all the digital
components of the system board on one ground
plane and all the analog and linear components on
a different ground plane. The CS6420 should be
placed over the analog ground plane. This prevents
digital switching noise from the digital components
of the board from coupling into the converters and
aliasing into the passband.
+5V
(Analog)
AVDD
AGND
DVDD
DGND
Analog Ground Plane
Digital Ground Plane
Microcontroller
1
μ
F
0.1
μ
F
0.1
μ
F
1
μ
F
Ferrite Bead
Figure 7. Ground Planes
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CD7343CS | FM STEREO MULTIPLEX DECODER |
| CD73 | CD73 |
| CD73NP-100MB | CD73 |
| CD73NP-100MC | CD73 |
| CD73NP-101KB | CD73 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CD645 | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:GENERAL PURPOSE SILICON DIODES |
| CD645B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Standard Rectifier (trr more than 500ns) |
| CD650-12-3Y | 制造商:Panduit Corp 功能描述:Conn NEMA 2 POS 44.45mm Screw ST 650A 制造商:Panduit Corp 功能描述:CONN NEMA 2 POS 44.45MM SCRW ST 650A - Bulk |
| CD650-12HK-3Y | 制造商:Panduit Corp 功能描述:COPPER MECH LUG, 2 HOLE, STRAIGHT FLOATI |
| CD-650-12-PY | 制造商:Thomas & Betts 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。