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參數(shù)資料
| 型號(hào)： | MAX9742ETX+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 4/36頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO PWR 20.5W D 36TQFN |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 類型： | D 類 |
| 輸出類型： | 2 通道（立體聲） |
| 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： | 20.5W x 2 @ 8 歐姆 |
| 電源電壓： | 20 V ~ 40 V，±10 V ~ 20 V |
| 特點(diǎn)： | 消除爆音，差分輸入，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： | 36-TQFN 裸露焊盤（6x6） |
| 封裝/外殼： | 36-WFQFN 裸露焊盤 |
| 包裝： | 管件 |
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MAX9742
Single-/Dual-Supply, Stereo 16W,
Class D Amplifier with Differential Inputs
12
______________________________________________________________________________________
12
______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1, 6, 18,
27, 28, 36
N.C.
No Connection. Not internally connected.
2, 3
OUTL
Left Speaker Output
4
SUB
Device Substrate. Connect SUB to VSS.
5
BOOTL
Left-Channel Bootstrap Capacitor Terminal. Connect a 0.1F capacitor between BOOTL and OUTL.
7
INL+
Left-Channel Positive Input
8
INL-
Left-Channel Negative Input. Connect an external feedback capacitor between INL- and FBL. See the
Feedback Capacitor (CFB_) section.
9
FBL
Left-Channel Feedback Capacitor Terminal. Connect an external feedback capacitor between FBL and
INL-. See the Feedback Capacitor (CFB_) section.
10
REGM
-5V Internal Regulator Output. Regulator output voltage is with respect to MID. Bypass REGM with a 1F
capacitor to signal ground plane (SGND). See the Supply Bypassing/Layout section.
11
MID
Midsupply Bias Voltage Input. The MID input biases the internal preamplifiers to the average value of the
VDD and VSS supply inputs. For dual-supply operation, connect to the signal ground plane (SGND). For
single-supply operation, apply a voltage to MID equal to 0.5 x VDD through an external resistive voltage-
divider and decoupling network (see the Setting VMID section). See the Typical Application
Circuits/Functional Diagrams and Supply Bypassing/Layout sections.
12
REGP
5V Internal Regulator Output. Regulator output voltage is with respect to MID. Bypass REGP with a 1F
capacitor to the signal ground plane (SGND). See the Supply Bypassing/Layout section.
13
REFCUR
Reference Current Resistor Terminal. Connect an external resistor from REFCUR to REGP to set the
switching frequency and output short-circuit current-limit value. Use resistor values greater than or equal
to 58k
and less than or equal to 75k. See the Setting the Switching Frequency and Output Current
Limit (RREF) section.
14
SFT
Soft-Start Capacitor Terminal/Mute Input. Connect a 0.22F capacitor between SFT and PGND to utilize
the soft-start power-up sequence. Drive SFT low to mute the outputs.
15
LGND
Logic Ground. Connect LGND to signal ground (SGND) and power ground (PGND) planes. See the
Supply Bypassing/Layout section.
16
LVDD
Internal 5V Logic Supply. Bypass LVDD to LGND with a 0.1F capacitor.
17
SHDN
Active-Low Shutdown Input. Drive SHDN high for normal operation. Drive SHDN low to place the device
into shutdown mode.
19
FBR
Right-Channel Feedback Capacitor Terminal. Connect an external feedback capacitor between FBR and
INR-. See the Feedback Capacitor (CFB_) section.
20
INR-
Right-Channel Negative Input. Connect an external feedback capacitor between INR- and FBR. See the
Feedback Capacitor (CFB_) section.
21
INR+
Right-Channel Positive Input
22
NSENSE
Negative Supply Sense Input. NSENSE is internally connected to VSS. Connect a 1F bypass capacitor
between NSENSE and REGLS.
23
REGLS
7V Internal Regulator Output. REGLS output voltage is with respect to VSS. Bypass REGLS with a 1F
capacitor to NSENSE.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9742ETX+ | 功能描述:音頻放大器 Stereo 16W 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 |
| MAX9742ETX+T | 功能描述:音頻放大器 Stereo 16W 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 |
| MAX9742EVKIT+ | 功能描述:音頻放大器 Evaluation Kit for the MAX9742 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 |
| MAX9744ETH+ | 功能描述:音頻放大器 Stereo 20W 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 |
| MAX9744ETH+T | 功能描述:音頻放大器 Stereo 20W 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 |
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