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參數(shù)資料
| 型號： | MAX9722B |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 5V. Differential-Input. DirectDrive. 130mW Stereo Headphone Amplifiers with Shutdown |
| 中文描述： | 5V、差分輸入、DirectDrive、130mW立體聲耳機(jī)放大器，帶有關(guān)斷 |
| 文件頁數(shù)： | 13/18頁 |
| 文件大?。?/td> | 537K |
| 代理商： | MAX9722B |
M
500mW, Low EMI, Filterless,
Class D Audio Amplifier
______________________________________________________________________________________
13
tered output drives the SYNC input of the slave device
(U2), synchronizing the switching frequencies of the two
devices. Synchronizing two MAX9712s ensures that no
beat frequencies occur within the audio spectrum. This
configuration works when the master device is in either
FFM or SSM mode. There is excellent THD+N perfor-
mance and minimal crosstalk between devices due to
the SYNC connection (Figures 8 and 9). U2 locks onto
only the frequency present at SYNC, not the pulse
width. The internal feedback loop of device U2 ensures
that the audio component of U1’s output is rejected.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, printed circuit
board techniques, bump-pad layout, and recommend-
ed reflow temperature profile, as well as the latest
information on reliability testing results, refer to the
Application Note:
UCSP
—
A Wafer-Level Chip-Scale
Package
available on Maxim’s website at www.maxim-
ic.com/ucsp.
Chip Information
TRANSISTOR COUNT: 3595
PROCESS: BiCMOS
Figure 7. Master-Slave Stereo Configuration
IN+
IN-
OUT+
OUT-
SYNC
1
μ
F
RIGHT-CHANNEL
DIFFERENTIAL
AUDIO INPUT
MAX9712
V
DD
V
DD
PV
DD
IN+
IN-
OUT+
OUT-
SYNC
1
μ
F
LEFT-CHANNEL
DIFFERENTIAL
AUDIO INPUT
MAX9712
V
DD
PV
DD
Figure 8. Master-Slave THD
100
0
0.1
0.2
0.3
0.4
0.5
10
1
0.1
0.01
0.001
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT POWER
OUTPUT POWER (W)
T
V
= 3.3V
f = 1kHz
R
L
= 8
SLAVE DEVICE
Figure 9. Master-Slave Crosstalk
0
-120
-100
10
100
1k
10k
100k
CROSSTALK vs. FREQUENCY
-80
FREQUENCY (Hz)
C
-60
-40
-20
MASTER-TO-SLAVE
SLAVE-TO-MASTER
V
DD
= 3.3V
R
= 8
f = 1kHz
V
IN
= 500mV
P-P
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9722BETE | 功能描述:音頻放大器 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 |
| MAX9722BETE+ | 功能描述:音頻放大器 DirectDrive 130mW Headphone 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 |
| MAX9722BETE+G104 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9722BETE+T | 功能描述:音頻放大器 DirectDrive 130mW Headphone 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 |
| MAX9722BETE+WG104 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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