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参数资料
| 型号： | CS6422-CS |
| 厂商： | CIRRUS LOGIC INC |
| 元件分类： | 无绳电话/电话 |
| 英文描述： | Enhanced Full-Duplex Speakerphone IC |
| 中文描述： | SPEAKER PHONE CIRCUIT, PDSO20 |
| 封装： | 0.300 INCH, MS-013, SOIC-20 |
| 文件页数： | 30/48页 |
| 文件大小： | 873K |
| 代理商： | CS6422-CS |
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CS6422
30
3.11
The pins AVDD (pin 1) and AGND (pin 2) power
the analog sections of the CS6422, and DVDD (pin
16) and DGND (pin 15) power the digital sections.
This distinction is important because internal to the
part, the digital power supply is likely to contain
high-frequency energy. The analog power supply is
kept clean internally by drawing current from a dif-
ferent pin, thereby achieving high performance in
the codecs and the microphone preamplifier.
Power Supply
The digital supply of the CS6422 should not be
connected to the system digital supply, if there is
one, as the CS6422 has internal timing mechanisms
designed to minimize the detrimental effects of its
own digital noise, but cannot use these to compen-
sate for externally introduced digital noise. The
CS6422 digital power supply should be derived
from its analog power supply through a ferrite bead
with low (< 1
) DC impedance
.
3.11.1
Power Down Mode
Typical power consumption of the CS6422 is
60 mA, assuming normal operating conditions.
This current consumption can be further reduced
by invoking the powerdown mode, which is en-
tered by holding RST low. Holding RST low will
power down all the internal blocks of the CS6422
and stop the oscillator. In powerdown mode, cur-
rent consumption drops to less than 2 mA.
3.11.2
Noise and Grounding
Since the CS6422 is a mixed-signal integrated cir-
cuit, the system designer must pay special attention
to layout and decoupling to minimize noise cou-
pling. The three best methods to reduce noise when
using the CS6422 are to properly decouple the
power supplies, to separate the system analog and
digital power and ground (all power and ground
pins of the CS6422 should tie to the analog power
supply), and to route signals on the board carefully.
AGND
DVDD
DGND
MB
AVDD
+5V
Analog
Supply
From
Ferrite
Bead
Figure 8. Suggested Layout
DS295F1
相关PDF资料 |
PDF描述 |
|---|---|
| CS6422-CSZ | Enhanced Full-Duplex Speakerphone IC |
| CS7054 | Low Side PWM FET Controller(高端PWM FET控制器) |
| CS7054YDW16 | DC Motor Controller/Driver |
| CS7054YDWR16 | DC Motor Controller/Driver |
| CS7410 | CD/MP3/WMA Audio Controller |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CS6422-CSZ | 功能描述:音频放大器 Enhanced Full-Duplex Speakerphone IC RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| CS6422-CSZ | 制造商:Cirrus Logic 功能描述:ICTelephone Speech CircuitSOP20PINPL |
| CS6422-CSZ | 制造商:Cirrus Logic 功能描述:IC TELEPHONE SPEECH CIRCUIT 20SOP |
| CS6422-CSZ/A | 功能描述:IC SPEAKERPHONE ENHANCED 20SOIC 制造商:cirrus logic inc. 系列:* 零件状态:过期 标准包装:37 |
| CS6422-CSZR | 功能描述:电信集成电路 IC Enhanced Full-Duplx Spkrphone RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
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