参数资料
| 型号： | CS43L22-CNZR |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 13/66页 |
| 文件大小： | 0K |
| 描述： | IC DAC W/HDPN & SPKR AMPS 40-QFN |
| 标准包装： | 4,000 |
| 位数： | 24 |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-VFQFN 裸露焊盘 |
| 供应商设备封装： | 40-QFN（6x6） |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 2 电压，单极 |
| 采样率（每秒）： | 96k |
| 配用： | 598-1529-ND - BOARD EVAL FOR CS43L22 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页当前第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页
20
DS792F2
CS43L22
Confidential Draft
3/4/10
4. APPLICATIONS
4.1
Overview
4.1.1
Basic Architecture
The CS43L22 is a highly integrated, low power, 24-bit audio DAC comprised of a Digital Signal Processing
Engine, headphone amplifiers, a digital PWM modulator and two full-bridge power back-ends. Other fea-
tures include battery level monitoring and compensation and temperature monitoring. The DAC is de-
signed using multi-bit delta-sigma techniques and operates at an oversampling ratio of 128Fs, where Fs
is equal to the system sample rate.
The PWM modulator operates at a fixed frequency of 384 kHz. The power MOSFETs are configured for
either stereo full-bridge or mono parallel full bridge output. The DAC operates in one of four sample rate
speed modes: Quarter, Half, Single and Double. It accepts and is capable of generating serial port clocks
(SCLK, LRCK) derived from an input Master Clock (MCLK).
4.1.2
Line Inputs
4 pairs of stereo analog inputs are provided for applications that require analog passthrough directly to
the HP/Line amplifiers. This analog input portion allows selection from and configuration of multiple com-
binations of these stereo sources.
4.1.3
Line & Headphone Outputs
The analog output portion of the CS43L22 includes a headphone amplifier capable of driving headphone
and line-level loads. An on-chip charge pump creates a negative headphone supply allowing a full-scale
output swing centered around ground. This eliminates the need for large DC-Blocking capacitors and al-
lows the amplifier to deliver more power to headphone loads at lower supply voltages.
4.1.4
Speaker Driver Outputs
The Class D power amplifiers drive 8
Ω (stereo) and 4 Ω (mono) speakers directly, without the need for
an external filter. The power MOSFETS are powered directly from a battery eliminating the efficiency loss
associated with an external regulator. Battery level monitoring and compensation maintains a steady out-
put as battery levels fall. A temperature monitor continually measures the die temperature and registers
when predefined thresholds are exceeded.
NOTE: The CS43L22 should only be used in captive speaker
systems where the outputs are permanently tied to the speaker terminals.
4.1.5
Fixed Function DSP Engine
The fixed-function digital signal processing engine processes the PCM serial input data. Independent vol-
ume control, left/right channel swaps, mono mixes, tone control and limiting functions also comprise the
DSP engine.
4.1.6
Beep Generator
The beep generator delivers tones at select frequencies across approximately two octave major scales.
With independent volume control, beeps may be configured to occur continuously, periodically, or at sin-
gle time intervals.
4.1.7
Power Management
Two control registers provide independent power-down control of the DAC, Headphone and Speaker out-
put blocks in the CS43L22 allowing operation in select applications with minimal power consumption.
相关PDF资料 |
PDF描述 |
|---|---|
| CS4461-CZZR | IC ADC PSR FEEDBACK 24-TSSOP |
| CS5340-CZZ | IC ADC AUD 101DB 200KHZ 16-TSSOP |
| CS5340-DZZR | IC ADC AUD 101DB 200KHZ 16-TSSOP |
| CS5341-DZZ | IC ADC AUD 105DB 200KHZ 16-TSSOP |
| CS5342-CZZ | IC ADC AUD 105DB 200KHZ 16-TSSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CS43L23-CWZR | 功能描述:IC DAC W/HDPN & SPKR AMPS 40-QFN 制造商:cirrus logic inc. 系列:* 零件状态:Not For New Designs 标准包装:6,000 |
| CS43L36-CNZ | 功能描述:IC-LOWPOWERHIGHPERFORMANCE HEADP 制造商:cirrus logic inc. 系列:* 零件状态:在售 标准包装:490 |
| CS43L41 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:Low Power 24-Bit, 96 kHz DAC with Volume Control |
| CS43L41-KZ | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| CS43L42 | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:Low Voltage,Stereo DAC With Headphone Amp |
发布紧急采购，3分钟左右您将得到回复。