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參數(shù)資料
| 型號： | MAX9759 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | 3.2W, High-Efficiency, Low-EMI, Filterless, Class D Audio Amplifier |
| 中文描述： | 3.2W、高效、低EMI、無需濾波、D類音頻放大器 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大小： | 957K |
| 代理商： | MAX9759 |
M
3.2W, High-Efficiency, Low-EMI, Filterless,
Class D Audio Amplifier
______________________________________________________________________________________
15
Component Selection
Input Filter
An input capacitor, C
IN
, in conjunction with the input
impedance of the MAX9759 forms a highpass filter that
removes the DC bias from an incoming signal. The AC-
coupling capacitor allows the amplifier to bias the sig-
nal to an optimum DC level. Assuming zero source
impedance, the -3dB point of the highpass filter is
given by:
f
-3dB
= 1/(2
π
R
IN
C
IN
)
Choose C
IN
such that f
-3dB
is well below the lowest fre-
quency of interest. Setting f
-3dB
too high affects the
low-frequency response of the amplifier. Use capaci-
tors whose dielectrics have low-voltage coefficients,
such as tantalum or aluminum electrolytic. Capacitors
with high-voltage coefficients, such as ceramics, may
result in increased distortion at low frequencies.
IN+
IN-
OUT+
OUT-
SYNC_OUT
RIGHT-CHANNEL
DIFFERENTIAL
AUDIO INPUT
MAX9759
V
DD
V
DD
PV
DD
IN+
IN-
OUT+
SYNC_OUT
SYNC
LEFT-CHANNEL
DIFFERENTIAL
AUDIO INPUT
MAX9759
V
DD
PV
DD
IN+
IN-
OUT+
SYNC_OUT
SYNC
DIFFERENTIAL
AUDIO INPUT
MAX9759
V
DD
PV
DD
SYNC
U1
U2
Figure 7. Master-Slave Configuration
100
0
0.5
1.0
1.5
2.0
10
1
0.1
0.01
0.001
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
OUTPUT POWER (W)
T
V
DD
= 5.0V
f = 1kHz
R
L
= 8
SLAVE DEVICE
Figure 8. Total Harmonic Distortion Plus Noise vs. Output
Voltage
-150
10
100
1k
100k
CROSSTALK vs. FREQUENCY
-130
-110
-90
-30
FREQUENCY (Hz)
C
-70
-50
10k
V
DD
= 5V
R
L
= 8
f = 1kHz
MASTER TO SLAVE
SLAVE TO MASTER
Figure 9. Crosstalk vs. Frequency
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9759ETE+ | 功能描述:音頻放大器 3.2W 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 |
| MAX9759ETE+T | 功能描述:音頻放大器 3.2W 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 |
| MAX9759EUE+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX9759EUE+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO 4.3W CLS-D 16TSSOP - Tape and Reel |
| MAX9759EVKIT | 功能描述:音頻放大器 Evaluation Kit for the MAX9759 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 |
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