- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10268 > MAX9758ETJ+ (Maxim Integrated Products)IC AMP AUDIO PWR 2.3W AB 32TQFN PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX9758ETJ+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 13/31頁 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 2.3W AB 32TQFN |
| 標(biāo)準(zhǔn)包裝： | 60 |
| 系列： | DirectDrive® |
| 類型： | AB 類 |
| 輸出類型： | 2-通道（立體聲）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： | 2.3W x 2 @ 3 歐姆; 130mW x 2 @ 16 歐姆 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 特點(diǎn)： | 消除爆音，短路保護(hù)和熱保護(hù)，關(guān)機(jī)，音量控制 |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 32-TQFN-EP（5x5） |
| 封裝/外殼： | 32-WFQFN 裸露焊盤 |
| 包裝： | 管件 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當(dāng)前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁
MAX9756/MAX9757/MAX9758
BIAS
The MAX9756/MAX9757/MAX9758 feature an internally
generated, power-supply independent, common-mode
bias voltage of 2.5V referenced to GND. BIAS provides
both click-and-pop suppression and sets the DC bias
level for the amplifiers. Choose the value of the bypass
capacitor as described in the BIAS Capacitor section.
No external load should be applied to BIAS. Any load
lowers the BIAS voltage, affecting the overall perfor-
mance of the device.
BEEP Input
The MAX9756/MAX9757/MAX9758 feature an audible
alert beep input (BEEP) that accepts a mono system
alert signal and mixes it into the stereo audio path.
When the amplitude of VBEEP exceeds 300mVP-P and
the frequency of the beep signal is greater than 300Hz,
the beep signal is mixed into the active audio path
(speaker or headphone). If the signal at VBEEP is either
< 300mVP-P or < 300Hz, the BEEP signal is not mixed
into the audio path. The amplitude of the BEEP signal at
the device output is roughly the amplitude VBEEP times
the gain of the selected signal path.
The input resistor (RB) sets the gain of the BEEP input
amplifier, and thus the amplitude of VBEEP. Choose RB
based on:
The total BEEP gain is given by:
where 47k
is the value of the BEEP amplifier feedback
resistor, VBEEP is the BEEP amplifier output, VIN(BEEP)
is the BEEP input amplitude, and VOUT(BEEP) is the total
BEEP output signal. AV(BEEPOUT) is given by the values
listed in Table 5. Note that VBEEP must be higher than
300mVP-P. The BEEP amplifier can be set up as either
an attenuator, if the original alert signal amplitude is too
large, or to gain up the alert signal if it is below
300mVP-P. AC-couple the alert signal to BEEP. Choose
the value of the coupling capacitor as described in the
Input Filtering section. Multiple beep inputs can be
summed (Figure 12).
V
k
R
A
OUT BEEP
IN BEEP
B
V BEEPOUT
()
=+
47
R
Vk
V
B
IN BEEP
BEEP
()
≤
× 47
2.3W Stereo Speaker Amplifiers and DirectDrive
Headphone Amplifiers with Automatic Level Control
20
______________________________________________________________________________________
MAX9756/
MAX9757/
MAX9758
RB
47k
BEEP
0.47
F
SOURCE 3
RB
47k
0.47
F
SOURCE 2
RB
47k
0.47
F
SOURCE 1
47k
BIAS
WINDOW
DETECTOR
(0.3VP-P THRESHOLD)
FREQUENCY
DETECTOR
(300Hz THRESHOLD)
SPEAKER/HEADPHONE
AMPLIFIER INPUTS
VBEEP
Figure 12. Beep Input
Table 5. BEEP Output Gain
AV(BEEPOUT)
HEADPHONE *
(V/V)
SPEAKER*
(V/V)
GAIN3
GAIN2
GAIN1
1.5
8.4
0
1.5
9.4
0
1
1.78
10
0
1
0
1.78
10
0
1
1.5
15.8
1
0
1.5
18.8
1
0
1
1.78
20
1
0
1.78
20
1
*All output gains are for VVOL = GND.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MS27656T13F8PC | CONN RCPT 8POS WALL MNT W/PINS |
| MAX9770ETI+ | IC AMP AUDIO 1.2W MONO D 28TQFN |
| MAX9757ETJ+ | IC AMP AUDIO PWR 2.3W AB 32TQFN |
| MAX9750BETI+ | IC AMP AUDIO PWR 2.6W AB 28TQFN |
| MS27656E13F8PC | CONN RCPT 8POS WALL MNT W/PINS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9758ETJ+ | 功能描述:音頻放大器 Integrated Circuits (ICs) 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 |
| MAX9758ETJ+T | 功能描述:音頻放大器 Integrated Circuits (ICs) 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+ | 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。