参数资料
型号: MAX9770ETI+T
厂商: Maxim Integrated Products
文件页数: 20/22页
文件大小: 0K
描述: IC AMP AUDIO 1.2W MONO D 28TQFN
标准包装: 2,500
类型: D 类
输出类型: 1-通道(单声道),带立体声耳机
在某负载时最大输出功率 x 通道数量: 1.2W x 1 @ 8 欧姆; 80mW x 2 @ 16 欧姆
电源电压: 2.5 V ~ 5.5 V
特点: 消除爆音,输入多路复用器,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: 28-TQFN-EP(5x5)
封装/外壳: 28-WFQFN 裸露焊盘
包装: 带卷 (TR)
MAX9770
1.2W, Low-EMI, Filterless, Mono Class D Amplifier
with Stereo DirectDrive Headphone Amplifiers
_______________________________________________________________________________________
7
Typical Operating Characteristics (continued)
(VDD = 3.3V, BW = 22Hz to 22kHz, GAIN1 = 1, GAIN2 = 0, spread-spectrum mode, headphone outputs in phase, unless otherwise
noted.)
1M
10M
100M
WIDEBAND OUTPUT SPECTRUM
(SPEAKER MODE)
MAX9770
toc19
FREQUENCY (Hz)
SSM MODE
RBW = 10kHz
40
-60
-40
MAGNITUDE
(dBV)
-20
0
20
10
-10
-30
-50
30
STARTUP WAVEFORM
(SPEAKER MODE)
MAX9770 toc20
4ms/div
SHDN
2V/div
OUT+ - OUT-
500mV/div
RL = 8
Ω
f = 1kHz
MIXER OUTPUT (SPEAKER MODE)
MAX9770 toc21
400
μs/div
10kHz
1V/div
4kHz
1V/div
1kHz
2V/div
IN1_
IN2_
MONO
OUT
1V/div
10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (HEADPHONE MODE)
0.01
0.1
1
MAX9770
toc22
FREQUENCY (Hz)
THD+N
(%)
1k
POUT = 10mW
POUT = 50mW
VDD = 5V
RL = 16
Ω
10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (HEADPHONE MODE)
0.01
0.1
1
MAX9770
toc23
FREQUENCY (Hz)
THD+N
(%)
1k
POUT = 10mW
POUT = 50mW
VDD = 5V
RL = 32
Ω
10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (HEADPHONE MODE)
0.01
0.1
1
MAX9770
toc24
FREQUENCY (Hz)
THD+N
(%)
1k
POUT = 10mW
POUT = 35mW
RL = 16
Ω
10
0.001
10
100
10k
100k
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. FREQUENCY (HEADPHONE MODE)
0.01
0.1
1
MAX9770
toc25
FREQUENCY (Hz)
THD+N
(%)
1k
POUT = 10mW
POUT = 50mW
RL = 32
Ω
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