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參數(shù)資料
| 型號： | MAX9710 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown |
| 中文描述： | 3W、單聲道/立體聲BTL音頻功率放大器，帶有關(guān)斷 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 606K |
| 代理商： | MAX9710 |
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
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 and TSSOP-EP
packages feature exposed thermal pads on their
undersides. This pad lowers the thermal resistance of
the package by providing a direct-heat conduction
path from the die to the printed circuit board. Connect
the exposed pad to the ground plane using multiple
vias, if required. For optimum performance, connect to
the ground planes as shown in Figure 4.
M
3W Mono/Stereo BTL Audio Power Amplifiers
with Shutdown
_______________________________________________________________________________________
9
TOTAL HARMONIC DISTORTI0N PLUS NOISE
vs. FREQUENCY
10
FREQUENCY (Hz)
T
10
1
0.1
0.01
0.1
1
0.001
0.01
100
V
OUT
= 8V
P-P
Figure 2. MAX9711 Piezoelectric Speaker Driver THD+N vs.
Frequency
MAX9711
IN
OUT+
OUT-
2
4
12
*
PIEZOELECTRIC
SPEAKER.
*
AUDIO
INPUT
1
μ
F
15k
15k
10
100
μ
H
Figure 3. Isolation Network for Driving a Piezoelectric Speaker
MAX9710
PGND
PV
DD
AUDIO SIGNAL
GND
V
DD
5V
FOR OPTIMUM PERFORMANCE,
AUDIO GND SHOULD HAVE A
STAR CONNECTION TO THE HIGH
CURRENT, AMPLIFIER PGND AT
ONE POINT ONLY. THIS IS DIFFERENT
FOR THE TWO AVAILABLE PACKAGES:
TSSOP-EP: PIN 3
THIN QFN: PIN 6
Figure 4. MAX9710 Audio Ground Connection
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX9711 | 3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown |
| MAX9710EUE | 3W Mono/Stereo BTL Audio Power Amplifiers with Shutdown |
| MAX9710ETP | Synchronous 8-Bit Up/Down Counters 24-CDIP -55 to 125 |
| MAX9713ETJ | Synchronous 8-Bit Up/Down Counters 24-CFP -55 to 125 |
| MAX9714ETJ | Synchronous 8-Bit Up/Down Counters 24-CFP -55 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9710ETP | 功能描述:音頻放大器 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 |
| MAX9710ETP+ | 功能描述:音頻放大器 3W Mono/Stereo BTL Audio Power Amp 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 |
| MAX9710ETP+T | 功能描述:音頻放大器 3W Mono/Stereo BTL Audio Power Amp 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 |
| MAX9710ETP-T | 功能描述:音頻放大器 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 |
| MAX9710EUE | 制造商:Maxim Integrated Products 功能描述:3W MONO/STEREO BTL AUDIO POWER AMPLIFIERS WIT - Bulk |
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