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參數(shù)資料
| 型號： | CS43L22-CNZ |
| 廠商： | Cirrus Logic Inc |
| 文件頁數(shù)： | 13/66頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC W/HDPN & SPKR AMPS 40QFN |
| 標準包裝： | 50 |
| 位數(shù)： | 24 |
| 數(shù)據接口： | 串行 |
| 轉換器數(shù)目： | 1 |
| 電壓電源： | 模擬和數(shù)字 |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 40-VFQFN 裸露焊盤 |
| 供應商設備封裝： | 40-QFN（6x6） |
| 包裝： | 托盤 |
| 輸出數(shù)目和類型： | 2 電壓，單極 |
| 采樣率（每秒）： | 96k |
| 產品目錄頁面： | 756 (CN2011-ZH PDF) |
| 配用： | 598-1529-ND - BOARD EVAL FOR CS43L22 |
| 其它名稱： | 598-1650 |
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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.
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相關代理商/技術參數(shù) |
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|---|---|
| CS43L22-CNZR | 功能描述:數(shù)模轉換器- DAC IC Low PWR DAC w/ClassD Spkr Driver RoHS:否 制造商:Texas Instruments 轉換器數(shù)量:1 DAC 輸出端數(shù)量:1 轉換速率:2 MSPs 分辨率:16 bit 接口類型:QSPI, SPI, Serial (3-Wire, Microwire) 穩(wěn)定時間:1 us 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-14 封裝:Tube |
| CS43L23-CWZR | 功能描述:IC DAC W/HDPN & SPKR AMPS 40-QFN 制造商:cirrus logic inc. 系列:* 零件狀態(tài):Not For New Designs 標準包裝:6,000 |
| CS43L36-CNZ | 功能描述:IC-LOWPOWERHIGHPERFORMANCE HEADP 制造商:cirrus logic inc. 系列:* 零件狀態(tài):在售 標準包裝:490 |
| CS43L41 | 制造商:CIRRUS 制造商全稱: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 |
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