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参数资料
| 型号： | CS4222-KS |
| 厂商： | CIRRUS LOGIC INC |
| 元件分类： | 消费家电 |
| 英文描述： | 20-Bit Stereo Audio Codec with Volume Control |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO28 |
| 封装： | SSOP-28 |
| 文件页数： | 11/26页 |
| 文件大小： | 580K |
| 代理商： | CS4222-KS |
Analog/Digital Volume Control - Control Port
Mode Only
The DAC outputs are each routed through an at-
tenuator which is adjustable in 0.5 dB steps.
Output attenuation is available through the Out-
put Attenuator Data Bytes (#3 & #4). Level
changes are implemented with an analog volume
control until the residual output noise is equal to
the noise floor in the mute state at which point
volume changes are performed digitally. This
technique is superior to purely digital volume
control techniques as the noise is attenuated by
the same amount as the signal, thus preserving
dynamic range (see Figure 5).
The CS4222 implements a "soft" volume control
whereby level changes are achieved by ramping
from the current level to the new level in 0.5 dB
steps. The default rate of volume change is 8
LRCK cycles for each 0.5 dB step (equivalent to
647
μ
s at Fs = 48 kHz). The rate of volume
Figure 4.
Signal
Noise
0
0
-113.5
Attenuation (dB)
A
Analog
Digital
Figure 5. Hybrid Analog/Digital Attenuation
CS4222
DS236PP3
11
相关PDF资料 |
PDF描述 |
|---|---|
| CS4222 | 20-Bit Stereo Audio Codec with Volume Control |
| CS4224 | 24-Bit 105 dB Audio Codec with Volume Control |
| CS4223-BS | 24-Bit 105 dB Audio Codec with Volume Control |
| CS4223 | 24-Bit 105 dB Audio Codec with Volume Control |
| CS4223-KS | IC EEPROM SRL 1024X8BIT 8DIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CS4223 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:24-Bit 105 dB Audio Codec with Volume Control |
| CS4223_03 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:24-Bit 105 dB Audio Codec with Volume Control |
| CS4223-BS | 功能描述:接口—CODEC 24-Bit 105dB Ster Cod w/o Vol. Con. RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
| CS4223-DS | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:24-Bit 105 dB Audio Codec with Volume Control |
| CS4223-DSR | 功能描述:接口—CODEC 24-Bit 105dB Ster Cod w/o Vol. Con. RoHS:否 制造商:Texas Instruments 类型: 分辨率: 转换速率:48 kSPs 接口类型:I2C ADC 数量:2 DAC 数量:4 工作电源电压:1.8 V, 2.1 V, 2.3 V to 5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-81 封装:Reel |
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