参数资料
型号: MAX9787ETI+T
厂商: Maxim Integrated Products
文件页数: 1/15页
文件大小: 0K
描述: IC AMP AUDIO PWR 2.2W AB 28TQFN
标准包装: 2,500
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: 2.2W x 2 @ 3 欧姆
电源电压: 4.5 V ~ 5.5 V
特点: 消除爆音,短路保护和热保护,关机,音量控制
安装类型: 表面贴装
供应商设备封装: 28-TQFN-EP(5x5)
封装/外壳: 28-WFQFN 裸露焊盘
包装: 带卷 (TR)
General Description
The MAX9787 combines a stereo, 2.2W audio power
amplifier with an analog volume control in a single device.
A high 90dB PSRR and low 0.01% THD+N ensures clean,
low-distortion amplification of the audio signal.
The analog volume control can be driven with a poten-
tiometer, an RC-filtered PWM source, or a DAC output.
A BEEP input allows the addition of alert signals from
the controller to the audio path.
Industry-leading, click-and-pop suppression eliminates
audible transients during power and shutdown cycles.
Other features include single-supply voltage, a shut-
down mode, logic-selectable gain, thermal-overload,
and output short-circuit protection.
The MAX9787 is offered in a space-saving, thermally
efficient, 28-pin thin QFN (5mm x 5mm x 0.8mm) pack-
age, and is specified over the extended -40°C to +85°C
temperature range.
Applications
Notebook PCs
Flat-Panel TVs
Tablet PCs
PC Displays
Features
Class AB, 2.2W, Stereo BTL Speaker Amplifiers
Analog Volume Control
BEEP Input with Glitch Filter
5V Single-Supply Operation
High 90dB PSRR
Low-Power Shutdown Mode
Industry-Leading Click-and-Pop Suppression
Low 0.01% THD+N at 1kHz
Short-Circuit and Thermal Protection
Selectable-Gain Settings
Space-Saving 28-Pin TQFN (5mm x 5mm x 0.8mm)
MAX9787
2.2W Stereo Audio Power Amplifier
with Analog Volume Control
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-3882; Rev 1; 1/07
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
PIN-PACKAGE
PKG CODE
MAX9787ETI+
28 TQFN-EP*
T2855N-1
Note: This device is specified for over -40°C to +85°C operat-
ing temperature range.
+Denotes lead-free package.
*EP = Exposed pad.
+5V
VOLUME
BEEP
MAX9787
Σ
Typical Operating Circuit
BIAS
GND
PGND
OUTR+
OUTR-
PV
DD
PV
DD
1
2
+
34
5
6
7
21
20
19
18
17
16
15
INL
BEEP
PGND
OUTL+
OUTL-
PV
DD
CPV
DD
8
9
10
11
12
13
14
C1P
CPGND
C1N
CPVSS
VSS
N.C.
28
27
26
25
24
23
22
VOL
INR
GND
VDD
GAIN1
GAIN2
SHDN
MAX9787
THIN QFN
TOP VIEW
*EP
*EXPOSED PAD.
Pin Configuration
Portable DVD Players
LCD Projectors
Multimedia Monitors
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