参数资料
型号: MAX9777ETI+T
厂商: Maxim Integrated Products
文件页数: 27/27页
文件大小: 0K
描述: IC AMP AUDIO PWR 2.6W AB 28TQFN
标准包装: 2,500
类型: AB 类
输出类型: 2-通道(立体声)带立体声耳机
在某负载时最大输出功率 x 通道数量: 2.6W x 2 @ 4 欧姆; 200mW x 2 @ 16 欧姆
电源电压: 4.5 V ~ 5.5 V
特点: 消除爆音,I²C,输入多路复用器,静音,关机,热保护
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)
MAX9777/MAX9778
Stereo 3W Audio Power Amplifiers with
Headphone Drive and Input Mux
_______________________________________________________________________________________
9
EXITING SHUTDOWN (HEADPHONE MODE)
MAX9777/78 toc37
100ms/div
OUT_+
1V/div
HP JACK
200mV/div
SHDN
2V/div
RL = 16
INPUT AC-COUPLED TO GND
ENTERING SHUTDOWN (HEADPHONE MODE)
MAX9777/78 toc38
100ms/div
OUT_+
1V/div
HP JACK
100mV/div
SHDN
2V/div
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(SPEAKER MODE)
MAX9777/78
toc39
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(mA)
5.25
5.00
4.75
5
10
15
20
25
0
4.50
5.50
TA = +85
°C
TA = +25
°C
TA = -40
°C
Typical Operating Characteristics (continued)
(VDD = PVDD = 5V, GND = PGND = 0V, VSHDN = 5V, CBIAS = 1F, TA = +25°C, unless otherwise noted.)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (HEADPHONE MODE)
MAX9777/78
toc35
FREQUENCY (Hz)
PSRR
(dB)
10k
1k
100
90
80
70
60
50
40
100
10
100k
VRIPPLE = 200mVP-P
CROSSTALK vs. FREQUENCY
(HEADPHONE MODE)
MAX9777/78
toc36
FREQUENCY (Hz)
CROSSTALK
(dB)
10k
1k
100
-110
-100
-90
-80
-70
-60
-50
-40
-120
10
100k
VIN = 200mVP-P
RL = 16
RIGHT TO LEFT
LEFT TO RIGHT
POWER DISSIPATION vs. OUTPUT POWER
(HEADPHONE MODE)
MAX9777/78
toc33
OUTPUT POWER (mW)
POWER
DISSIPATION
(mW)
50
100
150
200
20
40
60
80
100
120
0
RL = 16
f = 1kHz
POWER DISSIPATION vs. OUTPUT POWER
(HEADPHONE MODE)
MAX9777/78
toc34
OUTPUT POWER (mW)
POWER
DISSIPATION
(mW)
100
20
40
60
80
10
20
30
40
50
60
70
0
RL = 32
f = 1kHz
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