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参数资料
| 型号： | CS35L00-CNZ |
| 厂商： | CIRRUS LOGIC INC |
| 元件分类： | 音频／视频放大 |
| 中文描述： | 2.7 W, 1 CHANNEL, AUDIO AMPLIFIER, PDSO10 |
| 封装： | 3 X 3 MM, LEAD FREE, MO-220, DFN-10 |
| 文件页数： | 8/34页 |
| 文件大小： | 730K |
| 代理商： | CS35L00-CNZ |
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CS35L00
16
DS906PP1
In both HD and FHD mode, the value of the capacitance connected to the LFILT+ pin must not exceed
4.7
μF. If this value is greater than 4.7 μF, it will prevent the rail voltage of the output devices from transi-
tioning properly between VBATT and the internal LDO.
5.1.2.1
HD Mode
Hybrid Class-D mode (HD) provides competitive analog performance with a substantial reduction in idle
power dissipation and radiation emissions. In this mode, the output switches at 192 kHz and a secondary
supply is derived from VBATT using an internal 1.0 VDC low drop-out linear regulator (LDO). When the
output signal is at a low amplitude, the Class-D output stage begins to switch from the lower rail voltage
created by the internal LDO. This not only decreases idle power consumption when output capacitors are
used, but also reduces electromagnetic emissions by reducing the amplitude of the square waves being
created at the output of the CS35L00 when operating at low amplitude or idle power.
5.1.2.2
FHD Mode
The Reduced Frequency Hybrid Class-D (FHD) mode provides the best overall EMI performance and the
lowest power consumption with slightly decreased frequency response near the top frequency range of
the audio band, for high amplitude signals. In this mode of operation, the output switching frequency is
reduced to 76 kHz during high amplitude transients on the output. The threshold at which this transition
from 192 kHz to 76 kHz switching rate occurs is given as the Input Level Threshold for FHD Operation in
“Electrical Characteristics - FHD Mode” on page 13. Combined with the lower amplitude switching offered
by the Hybrid design, this reduction in switching energy dramatically reduces the emissions levels of the
output stage and its associated components.
5.2
Reducing the Gain with External Series Resistors
If necessary, it is possible to decrease the gain of the CS35L00 by adding series resistors to the audio input
signal as is shown in Figure 4 below.
If input resistors are added, the new gain of the amplifier can be determined by the following equation:
Where:
AV(adjusted) = The new, adjusted gain of the system
Audio In+
Audio In-
RIN
AIN+
AIN-
x
Figure 4. Adjusting Gain via External Series Resistance
A
V adjusted
()
A
V
20
–
Z
IN
Z
IN
Z
EXT
+
--------------------------
log
×
=
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CS35L00-CNZR | 功能描述:音频放大器 Low Power Amp 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 |
| CS35L01 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:2.9 W Mono Class-D Audio Amplifier with Low Idle Current |
| CS35L01-CWZ | 功能描述:音频放大器 Mono Low Power Amp w/ +6dB Gain 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 |
| CS35L01-CWZR | 功能描述:IC AMP AUD LP 3W MONO D 9WLCSP RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:D 类 输出类型:1-通道（单声道），带立体声耳机 在某负载时最大输出功率 x 通道数量:930mW x 1 @ 8 欧姆; 40mW x 2 @ 16 欧姆 电源电压:2.7 V ~ 5.5 V 特点:消除爆音，差分输入，I²C，静音，关闭，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) 其它名称:MAX97000EWA+T-ND |
| CS35L03 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:2.9 W Mono Class-D Audio Amplifier with Low Idle Current |
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