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| 型号： | MAX97003EWP+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 15/48页 |
| 文件大小： | 0K |
| 描述： | IC AUDIO SUBSYSTEM LN 20WLP |
| 标准包装： | 2,500 |
| 类型： | D 类；H 类 |
| 输出类型： | 1-通道（单声道）或 2-通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 1W x 2 @ 8 欧姆 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 特点： | 消除爆音，差分输入，关闭 |
| 安装类型： | * |
| 供应商设备封装： | * |
| 封装/外壳： | * |
| 包装： | * |
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Maxim Integrated Products 22
MAX97003
High-Efficiency, Low-Noise Audio Subsystem
Detailed Description
The MAX97003 audio subsystem combines a mono
speaker amplifier with a stereo headphone amplifier. The
high-efficiency 1W class D speaker amplifier operates
directly from a lithium-ion battery and consumes no more
than 0.05FA when in shutdown mode. The headphone
amplifier utilizes a dual-mode charge pump and a Class
H output stage to maximize efficiency while outputting a
ground-referenced signal that does not require output
coupling capacitors. The headphone and speaker ampli-
fiers have independent volume and on/off control. The
four inputs are configurable as two differential inputs or
four single-ended inputs. All control is performed using
the two-wire I2C interface.
The speaker amplifier incorporates a distortion limiter to
automatically reduce the volume level when excessive
clipping occurs. This allows high gain for low-level sig-
nals without compromising the quality of large signals.
The speaker amplifier also features an adjustable DRC
that provides programmable compression or limiting
of the audio signal. Both the headphone and speaker
amplifiers feature a downward expander/noise gate to
attenuate noise when no input signal is present. The
headphone amplifier features a ground-sense pin to
eliminate ground loop noise when the headphone jack
is in use.
Signal Path
The signal path consists of flexible inputs, signal mixing,
volume control, and output amplifiers (Figure 1). The
inputs can be configured for single-ended or differen-
tial signals (Figure 2). The internal preamplifiers feature
programmable gain settings using internal resistors.
Following preamplification, the input signals are mixed,
volume adjusted, and routed to the headphone and
speaker amplifiers based on the desired configuration.
Class D Speaker Amplifier
The Class D speaker amplifier utilizes active emissions-
limiting and spread-spectrum modulation to minimize the
EMI radiated by the amplifier.
Figure 1. Signal Path
-63dB TO 0dB
MIXER
AND
MUX
INA2
INA1
INB2
INB1
0dB TO +6dB
HPL
HPR
SPKP
SPKN
-63dB TO 0dB0dB TO +6dB
-63dB TO 0dB+12dB TO +24dB
INPUT A
-3dB TO +12dB
INPUT B
-3dB TO +12dB
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9700AEBC | 制造商:Maxim Integrated Products 功能描述:1.2W LOW EMI FILTERLESS CLASS D - Rail/Tube |
| MAX9700AEBC+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO 1.6W CLS-D 12UCSP - Rail/Tube |
| MAX9700AEBC+T | 功能描述:音频放大器 1.2W L-EMI Filterles Class D Audio 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 |
| MAX9700AEBC-T | 功能描述:音频放大器 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 |
| MAX9700AETB | 制造商:Maxim Integrated Products 功能描述:1.2W, LOW EMI, FILTERLESS, CLASS D AUDIO AMPL - Rail/Tube |
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