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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： | 11/34页 |
| 文件大小： | 730K |
| 代理商： | CS35L00-CNZ |
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CS35L00
DS906PP1
19
Static signals (i.e. sine waves at a fixed amplitude) are easier to consider than are dynamic signals (i.e.
musical content), as they are governed by the same equation as that listed in Section 5.3.3.1 and Section
5.3.3.2 on page 18. Modifications to that equation are limited to the voltage term (V) and the frequency
term (f), depending on whether the static input signal amplitude is causing the output devices to switch at
76 kHz or 192 kHz, and to operate off of the VBATT supply or off of the internally generated LDO.
It is important to note that the HD and FHD modes offer significant improvement over traditional Class D
in idle power dissipation when an external output filter is necessary. This is because the voltage term (V)
is significantly reduced in HD and FHD mode. As can be seen in the equation, this is notable because
reduction in the operating voltage reduces power losses not linearly, but instead exponentially- due to the
voltage squared term (V2). It is also notable that when operated at high output levels, FHD modes also
offers unique improvement in output filter losses, due to reducing the switching frequency (f) at higher out-
put levels.
5.4
Power-Up and Power-Down
When pulled to a logic low state, the SD pin tristates the outputs and shuts down the CS35L00 device, put-
ting it into a low power mode.
5.4.1
Recommended Power-Up Sequence
1. With the SD pin pulled low, apply power to the CS35L00 and wait for the power supply to be stable.
2. Set the SD pin high to begin normal operation.
5.4.1.1
Zero Crossing on Power-Up Functionality
The CS35L00 implements an input-signal zero-crossing detection function that is enabled during power-
up. This function is designed to prevent audible artifacts and eliminate any need to mute the amplifier’s
input audio signal during the power-up process.
After a minimum start-up time of tstart, the CS35L00 will begin to detect input-signal zero-crossings. The
amplifier will then enable its switching outputs at the time of the first detected input-signal zero-crossing
transition. If no input-signal zero-crossing is detected before ttimeout, the zero-crossing function will time-
out and the outputs will begin switching immediately.
OUT+/-
Shut-Down /
Low Power
Mode
tstart
SD
VIH
Device Ready:
Waiting for Zero
Crossing Input
Signal or ttimeout
Internal
Start-Up
VIL
PWM OUT+/-
Active
VBATT or VLDO
IN+/-
ttimeout
Figure 6. Power-Up Timing with Input
Zero-Crossing
Figure 7. Power Up Timing without Input
Zero-Crossing
OUT+/-
Shut-Down /
Low Power
Mode
tstart
SD
VIH
Device Ready: Waiting for Zero
Crossing Input Signal or ttimeout
Internal
Start-Up
VIL
PWM OUT+/-
Active
VBATT or VLDO
IN+/-
ttimeout
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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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