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参数资料
| 型号： | MAX9714ETJ+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/18页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 8W STER 32TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | D 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： | 8W x 2 @ 16 欧姆 |
| 电源电压： | 10 V ~ 25 V |
| 特点： | 消除爆音，差分输入，静音，短路和热保护，关机 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 32-TQFN-EP（7x7） |
| 封装/外壳： | 32-WQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
Flying Capacitor (C1)
The value of the flying capacitor (C1) affects the load
regulation and output resistance of the charge pump. A
C1 value that is too small degrades the device’s ability to
provide sufficient current drive. Increasing the value of
C1 improves load regulation and reduces the charge-
pump output resistance to an extent. Above 1F, the on-
resistance of the switches and the ESR of C1 and C2
dominate.
Output Capacitor (C2)
The output capacitor value and ESR directly affect the
ripple at CHOLD. Increasing C2 reduces output ripple.
Likewise, decreasing the ESR of C2 reduces both rip-
ple and output resistance. Lower capacitance values
can be used in systems with low maximum output
power levels.
Output Filter
The MAX9713/MAX9714 do not require an output filter.
The device passes FCC emissions standards with
36cm of unshielded speaker cables. However, output
filtering can be used if a design is failing radiated emis-
sions due to board layout or cable length, or the circuit
is near EMI-sensitive devices. Use a ferrite bead filter
when radiated frequencies above 10MHz are of con-
cern. Use an LC filter when radiated frequencies below
10MHz are of concern, or when long leads connect the
amplifier to the speaker. Refer to the MAX9714
Evaluation Kit schematic for details of this filter.
Sharing Input Sources
In certain systems, a single audio source can be shared
by multiple devices (speaker and headphone ampli-
fiers). When sharing inputs, it is common to mute the
unused device, rather than completely shutting it down,
preventing the unused device inputs from distorting the
input signal. Mute the MAX9713/MAX9714 by driving SS
low through an open-drain output or MOSFET (see the
System Diagram). Driving SS low turns off the Class D
output stage, but does not affect the input bias levels of
the MAX9713/MAX9714. Be aware that during normal
operation, the voltage at SS can be up to 7V, depending
on the MAX9713/MAX9714 supply.
Supply Bypassing/Layout
Proper power-supply bypassing ensures low distortion
operation. For optimum performance, bypass VDD to
PGND with a 0.1F capacitor as close to each VDD pin
as possible. A low-impedance, high-current power-sup-
ply connection to VDD is assumed. Additional bulk
capacitance should be added as required depending on
the application and power-supply characteristics. AGND
and PGND should be star connected to system ground.
Refer to the MAX9714 Evaluation Kit for layout guidance.
MAX9713/MAX9714
6W, Filterless, Spread-Spectrum
Mono/Stereo Class D Amplifiers
______________________________________________________________________________________
11
PGND
V
DD
V
DD
N.C.
FS2
FS1
N.C.
PGND
V
DD
V
DD
C1N
CHOLD
N.C.
9
10
11
12
13
14
15
REG.
AGND
IN-
IN+
SS
SHDN
G1
32
31
30
29
28
27
26
N.C.
OUT+
OUT-
N.C.
MAX9713
25
1
23
4
5
67
8
24
+
23
22
21
20
19
18
17
N.C.
16
G2
TOP VIEW
TQFN (5mm x 5mm)
C1P
TQFN (7mm x 7mm)
PGND
V
DD
V
DD
FS2
FS1
G2
G1
PGND
V
DD
V
DD
C1N
CHOLD
N.C.
9
10
11
12
13
14
15
INL-
INL+
SHDN
SS
AGND
REG.
INR-
32
31
30
29
28
27
26
OUTL+
OUTL-
OUTR+
OUTR-
MAX9714
25
1
23
4
5
67
8
24
23
22
21
20
19
18
17
OUTR-
16
INR+
C1P
Pin Configurations
Chip Information
MAX9713 TRANSISTOR COUNT: 3093
MAX9714 TRANSISTOR COUNT: 4630
PROCESS: BiCMOS
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| MAX9718DEUB+ | IC AMP AUDIO PWR 1.4W AB 10MSOP |
| MAX97200AEWC+T | IC HEADPHONE AMPLIFIER 12WLP |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9714EVKIT | 功能描述:音频放大器 Evaluation Kit for the MAX9704 MAX9714 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 |
| MAX9715ETE+ | 功能描述:音频放大器 2.8W Low-EMI Stereo Class D Amplifier 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 |
| MAX9715ETE+T | 功能描述:音频放大器 2.8W Low-EMI Stereo Class D Amplifier 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 |
| MAX9715EUE+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 2CH STEREO 2.8W CLS-D 16TSSOP - Rail/Tube |
| MAX9715EUE+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 2CH STEREO 2.8W CLS-D 16TSSOP - Tape and Reel |
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