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参数资料
| 型号： | MAX9770ETI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 22/22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
_______________________________________________________________________________________
9
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.)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY (HEADPHONE MODE)
MAX9770
toc35
FREQUENCY (Hz)
PSRR
(dB)
10k
1k
100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
10
100k
VDD = 3.3V
VRIPPLE = 200mVP-P
RL = 32
Ω
MAX9770
CBIAS = 0.047
μF
0
-100
10
100
1k
10k
100k
CROSSTALK vs. FREQUENCY
(HEADPHONE MODE)
-80
MAX9770
toc36
FREQUENCY (Hz)
CROSSTALK
(dB)
-60
-40
-20
-30
-50
-70
-90
-10
RL = 32
Ω
f = 1kHz
VIN = 200mVP-P
LEFT TO RIGHT
RIGHT TO LEFT
0
-100
10
100
1k
10k
100k
FEEDTHROUGH vs. FREQUENCY
-80
MAX9770
toc37
FREQUENCY (Hz)
FEEDTHROUGH
(dB)
-60
-40
-20
-30
-50
-70
-90
-10
SEL1 = 0
SEL2 = 1
IN1_ = GND
IN2_ = DRIVEN
VIN = 2VP-P
HEADPHONE MODE
SPEAKER MODE
0
10
30
20
50
40
60
20
30
40
50
OUTPUT POWER
vs. CHARGE-PUMP CAPACITANCE
AND LOAD RESISTANCE
MAX9770
toc38
LOAD RESISTANCE (
Ω)
OUTPUT
POWER
(mW)
C1 = C2 = 1
μF
C1 = C2 = 0.47
μF
f = 1kHz
THD+N = 1%
-140
-100
-120
-60
-80
-20
-40
0
OUTPUT SPECTRUM
(HEADPHONE MODE)
MAX9770
toc39
FREQUENCY (kHz)
MAGNITUDE
(dB)
0
5
10
15
20
RL = 32
Ω
f = 1kHz
VIN = -60dBV
EXITING SHUTDOWN
(HEADPHONE MODE)
MAX9770 toc40
2
μs/div
SHDN
2V/div
OUT_
10mV/div
RL = 32
Ω
ENTERING SHUTDOWN
(HEADPHONE MODE)
MAX9770 toc41
2
μs/div
SHDN
2V/div
OUT_
10mV/div
RL = 32
Ω
0
2
6
4
8
10
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9770
toc42
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(mA)
2.5
4.5
3.5
5.5
SPEAKER MODE
HEADPHONE MODE
0
0.1
0.3
0.2
0.4
0.5
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9770
toc43
SUPPLY VOLTAGE (V)
SUPPLY
CURRENT
(μ
A)
2.5
4.5
3.5
5.5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9770EUI | 制造商:Rochester Electronics LLC 功能描述: |
| MAX9770EUI+ | 功能描述:音频放大器 1.2W Low-EMI 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 |
| MAX9770EUI+T | 功能描述:音频放大器 1.2W Low-EMI 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 |
| MAX9770EVKIT | 功能描述:音频 IC 开发工具 Programmers, Development Systems RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| MAX9772EBA | 制造商:Maxim Integrated Products 功能描述:1.2WLOW-EMIFILTERLESSMONO CLASS - Rail/Tube |
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