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参数资料
| 型号： | MAX9710ETP+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/13页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 3W STER 20TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 60 |
| 类型： | AB 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 3W x 2 @ 3 欧姆 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 特点： | 消除爆音，静音，关机，热保护 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 20-TQFN-EP（5x5） |
| 封装/外壳： | 20-WQFN 裸露焊盘 |
| 包装： | 管件 |
The capacitive nature of the piezoelectric speaker may
cause the MAX9711 to become unstable. A simple induc-
tor/resistor network in series with the speaker isolates the
speaker capacitance from the driver and ensures that the
device output sees a resistive load of about 10
Ω at high
frequency, thereby maintaining stability (Figure 3).
Layout and Grounding
Good PC board layout is essential for optimizing perfor-
mance. Use large traces for the power-supply inputs and
amplifier outputs to minimize losses due to parasitic
trace resistance and route heat away from the device.
Good grounding improves audio performance,
minimizes crosstalk between channels, and prevents any
digital switching noise from coupling into the audio
signal.
The MAX9710/MAX9711 thin QFN package features an
exposed thermal pad on the underside. This pad low-
ers the thermal resistance of the package by providing
a direct-heat conduction path from the die to the print-
ed circuit board. Connect the exposed pad to the
ground plane using multiple vias, if required. For opti-
mum performance, connect to the ground planes as
shown in Figure 4.
MAX9710/MAX9711
3W Mono/Stereo BTL Audio Power Amplifiers
with Shutdown
_______________________________________________________________________________________
9
TOTAL HARMONIC DISTORTI0N PLUS NOISE
vs. FREQUENCY
FREQUENCY (Hz)
THD+N
(%)
10
1
0.1
0.01
0.1
1
10
0.001
0.01
100
VOUT = 8VP-P
Figure 2. MAX9711 Piezoelectric Speaker Driver THD+N vs.
Frequency
MAX9711
IN
OUT+
OUT-
2
4
12
*PIEZOELECTRIC
SPEAKER.
*
AUDIO
INPUT
1
μF
15k
Ω
15k
Ω
10
Ω
100
μH
Figure 3. Isolation Network for Driving a Piezoelectric Speaker
MAX9710
PGND
PVDD
AUDIO SIGNAL
GND
VDD
5V
FOR OPTIMUM PERFORMANCE,
AUDIO GND SHOULD HAVE A
STAR CONNECTION TO THE HIGH
CURRENT, AMPLIFIER PGND AT
A SINGLE POINT, PIN 6.
Figure 4. MAX9710 Audio Ground Connection
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9710ETP+ | 功能描述:音频放大器 3W Mono/Stereo BTL Audio 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 |
| MAX9710ETP+T | 功能描述:音频放大器 3W Mono/Stereo BTL Audio 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 |
| MAX9710ETP-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 |
| MAX9710EUE | 制造商:Maxim Integrated Products 功能描述:3W MONO/STEREO BTL AUDIO POWER AMPLIFIERS WIT - Bulk |
| MAX9710EUE+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 2CH STEREO 3W CLS-AB 16TSSOP EP - Rail/Tube |
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