參數(shù)資料
型號(hào): MAX9770ETI+
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 22/22頁(yè)
文件大小: 0K
描述: IC AMP AUDIO 1.2W MONO D 28TQFN
標(biāo)準(zhǔn)包裝: 60
類型: D 類
輸出類型: 1-通道(單聲道),帶立體聲耳機(jī)
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量: 1.2W x 1 @ 8 歐姆; 80mW x 2 @ 16 歐姆
電源電壓: 2.5 V ~ 5.5 V
特點(diǎn): 消除爆音,輸入多路復(fù)用器,靜音,短路和熱保護(hù),關(guān)機(jī)
安裝類型: 表面貼裝
供應(yīng)商設(shè)備封裝: 28-TQFN-EP(5x5)
封裝/外殼: 28-WFQFN 裸露焊盤
包裝: 管件
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
A)
2.5
4.5
3.5
5.5
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MAX9770EUI+ 功能描述:音頻放大器 1.2W Low-EMI Class D Amplifier 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
MAX9770EUI+T 功能描述:音頻放大器 1.2W Low-EMI Class D Amplifier 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