- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383547 > MAX9718A (Maxim Integrated Products, Inc.) Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX9718A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers |
| 中文描述： | 低成本，單聲道/立體聲，以1.4W差分音頻功率放大器 |
| 文件頁(yè)數(shù)： | 12/23頁(yè) |
| 文件大?。?/td> | 569K |
| 代理商： | MAX9718A |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)
M
Input Filter
The fully differential amplifier inputs can be biased at
voltages other than midsupply. The common-mode
feedback circuit adjusts for input bias, ensuring the
outputs are still biased at midsupply. Input capacitors
are not required as long as the common-mode input
voltage is within the specified range listed in the
Electrical Characteristics
table.
If input capacitors are used, input capacitor C
IN
, in
conjunction with R
IN
, forms a highpass filter that
removes the DC bias from an incoming signal. The AC-
coupling capacitor allows the amplifier to bias the sig-
nal to an optimum DC level. Assuming zero-source
impedance, the -3dB point of the highpass filter is
given by:
Setting f
-3dB
too high affects the low-frequency
response of the amplifier. Use capacitors with
dielectrics that have low-voltage coefficients, such as
tantalum or aluminum electrolytic. Capacitors with high-
voltage coefficients, such as ceramics, can increase
distortion at low frequencies.
BIAS Capacitor
BIAS is the output of the internally generated V
CC
/2
bias voltage. The BIAS bypass capacitor, C
BIAS
,
improves PSRR and THD+N by reducing power supply
and other noise sources at the common-mode bias
node, and also generates the clickless/popless startup
DC bias waveform for the speaker amplifiers. Bypass
BIAS with a 0.1μF capacitor to GND. Larger values of
C
BIAS
(up to 1μF) improve PSRR, but slow down
t
ON
/t
OFF
times. A 1μF C
BIAS
capacitor slows turn-on
and turn-off times by 10 and improves PSRR by 20dB
(at 1kHz). Do not connect external loads to BIAS.
Supply Bypassing
Proper power-supply bypassing ensures low-noise,
low-distortion performance. Connect a 1μF ceramic
capacitor from V
CC
to GND. Add additional bulk
capacitance as required by the application. Locate the
bypass capacitor as close to the device as possible.
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 MAX9718/MAX9719 TDFN, TQFN, TSSOP, and
μMAX 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 PC board. Connect the exposed pad
to the ground plane using multiple vias, if required.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, PC board tech-
niques, bump-pad layout, and recommended reflow
temperature profile, as well as the latest information on
reliability testing results, refer to the Application Note:
UCSP—A Wafer-Level Chip-Scale
Package available
on Maxim
’
s website at www.maxim-ic.com/ucsp.
f
R C
2
π
dB
3
=
1
Low-Cost, Mono/Stereo,
1.4W Differential Audio Power Amplifiers
12
______________________________________________________________________________________
PART
MONO
STEREO
GAIN
(dB)
SELECTABLE
SHUTDOWN
POLARITY
MAX9718A
MAX9718B
MAX9718C
MAX9718D
MAX9719A
MAX9719B
MAX9719C
MAX9719D
√
√
√
√
—
—
—
—
—
—
—
—
√
√
√
√
Adjustable
0
3
6
Adjustable
0
3
6
√
√
√
√
—
—
—
—
Selector Guide
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX9718AEUB | Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers |
| MAX9718B | Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers |
| MAX9718BEUB | Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers |
| MAX9718C | Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers |
| MAX9718CETB | Low-Cost, Mono/Stereo,1.4W Differential Audio Power Amplifiers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9718AEBL | 制造商:Maxim Integrated Products 功能描述:LOW-COST MONO/STEREO 1.4W DIFFERE - Rail/Tube |
| MAX9718AEBL+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO 1.4W CLS-AB 9UCSP - Rail/Tube |
| MAX9718AEBL+T | 制造商:Maxim from Components Direct 功能描述:THE MAXIM MAX9718AEBL+T IS A CLASS AB PORTABLE SPEAKER AMPLI - Tape and Reel 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO 1.4W CLS-AB 9UCSP - Tape and Reel 制造商:Maxim 功能描述:Maxim MAX9718AEBL+T, Audio Power Amplifier Class AB 1.4W Differential 2.7V-5.5V 9-bump USCP |
| MAX9718AEBL+TG45 | 功能描述:音頻放大器 Mono/Stereo 1.4W 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 |
| MAX9718AEBL-T | 制造商:Maxim Integrated Products 功能描述:LOW-COST, MONO/STEREO, 1.4W DIFFERENTIAL AUDI - Tape and Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。