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參數(shù)資料
| 型號(hào)： | ZXCD1010 |
| 廠商： | Zetex Semiconductor |
| 英文描述： | HIGH FIDELITY CLASS D AUDIO AMPLIFIER SOLUTION |
| 中文描述： | 高保真D類音頻放大器解決方案 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大小： | 555K |
| 代理商： | ZXCD1010 |
With no audio input signal applied, the AudioA/B
inputs are biased at the mid-point of the triangular
wave, and the duty cycle at the output of the
comparators is nominally 50%. As theAudioA/B signal
ascends towards the peak level, the crossing points
with the (higher frequency) triangular wave also
ascend. The comparator monitoring these signals
exhibits a corresponding increase in output duty cycle.
Similarly, as the AudioA/B signal descends, the duty
cycleis correspondingly reduced. Thus theaudio input
Pulse Width Modulates the comparator outputs. This
principle is illustrated in Figures 3a, b, c and d. The
comparator outputs are buffered and used to drive the
OutA and OutB outputs.These in turn drive the speaker
load (with the audio information contained in the PWM
signal) via the off chip output bridge and single stage
L-C filter network.
The ramp amplitude is approximately 1V. The AudioA,
AudioB, TriangleA and TriangleB inputs are internally
biased to a DC voltage of approximately VCC/5. The
mid - point DC level of the OscA and OscB triangular
outputs is around 2V. The triangular wave at the Cosc
pin traverses between about 2.7Vand 3.8V and the dist
pin exhibits a roughly square wave from about 1.4V to
2V. (The above voltages may vary in practice and are
included for guidance only).
ZXCD1010
S E M IC O N D U C T O R S
ISSUE 3 - NOVEMBER 2003
5
Audio A/B
Triangle A/B
PWM Comparator
O/P
Audio A/B
Triangle A/B
Comparator O/P
(Duty Cycle = 50%)
O/P
Audio A/B
Triangle A/B
Comparator O/P
Audio A/B
Triangle A/B
Comparator O/P
(Duty Cycle = 25%)
Figures 3a,3b,3c and 3d
The audio input Pulse Width Modulates the comparator output
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相關(guān)代理商/技術(shù)參數(shù) |
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| ZXCD1010EQ16 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:HIGH FIDELITY CLASS D AUDIO AMPLIFIER SOLUTION |
| ZXCD1010EQ16TA | 功能描述:IC AMP AUDIO CLASS D MONO 16QSOP RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:DirectDrive® 類型:H 類 輸出類型:耳機(jī)，2-通道（立體聲） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:35mW x 2 @ 16 歐姆 電源電壓:1.62 V ~ 1.98 V 特點(diǎn):I²C，麥克風(fēng)，靜音，短路保護(hù)，音量控制 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:25-WLP（2.09x2.09） 封裝/外殼:25-WFBGA，WLCSP 包裝:帶卷 (TR) |
| ZXCD1210 | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:High performance analog input Class D modulator |
| ZXCD1210JB16 | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:High performance analog input Class D modulator |
| ZXCD1210JB16TA | 功能描述:音頻放大器 CLASS D MODULATOR RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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