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參數(shù)資料
| 型號： | MAX9773ETG+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/21頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO PWR 1.8W D 24TQFN |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | D 類 |
| 輸出類型： | 2 通道（立體聲） |
| 在某負(fù)載時最大輸出功率 x 通道數(shù)量： | 1.8W x 2 @ 4 歐姆 |
| 電源電壓： | 2.6 V ~ 5.5 V |
| 特點： | 消除爆音，差分輸入，短路和熱保護，關(guān)閉 |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 24-TQFN-EP（4x4） |
| 封裝/外殼： | 24-WFQFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
MAX9773
Output Filter
The MAX9773 does not require an output filter. The
device passes FCC emissions standards with 6in of
unshielded speaker cables. However, output filtering
can be used if a design is failing radiated emissions due
to board layout or cable length, or if the circuit is near
EMI-sensitive devices. Use a ferrite bead filter when
radiated frequencies above 10MHz are of concern. Use
an LC filter or a common-mode choke when radiated
emissions below 10MHz are of concern, or when long
leads (>6in) connect the amplifier to the speaker.
2.1 Channel Configuration
The typical 2.1 channel application circuit (Figure 8)
shows the MAX9773 configured as a mid/high-frequency
amplifier and the MAX9705 configured as a mono bass
amplifier. Input capacitors (CIN) set the highpass cutoff
frequency according to the following equation:
where RIN is the typical input resistance of the
MAX9773. The 10F capacitors on the output of the
MAX9773 ensure a two-pole highpass filter.
f
RC
IN
=
××
1
2
π
1.8W, Filterless, Ultra-Low EMI,
Stereo Class D Audio Power Amplifier
16
______________________________________________________________________________________
MAX9773
MAX9705
MAX4238
INR+
INL+
INL-
INR-
SYNC
5V
OUTL+
OUTL-
OUTR+
OUTR-
8
8
SYNC_OUT
10
F
10
F
CIN
2200pF
1
F
1
F
5V
NOTE: VALUES SHOWN ARE FOR A LOWPASS CUTOFF OF 2Hz AND A BASS GAIN OF -1V/V.
FFM MODE WITH fOSC = 1100kHz.
OUT+
OUT-
SYNC
IN+
IN-
1.25V
R3
10k
C2
1nF
R1
20k
R2
20k
R4
39k
C1
0.01
F
VDD
CIN
2200pF
CIN
2200pF
CIN
2200pF
4
Figure 8. 2.1 Channel Application Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9773EWP+G45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9773EWP+TG45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9775EBX+G45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9775EBX+TG45 | 功能描述:音頻放大器 2 x 1.5W Stereo Class D Subsystem 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 |
| MAX9775EBX+TGA6 | 制造商:Maxim Integrated Products 功能描述: |
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