參數(shù)資料
型號(hào)： MAX9742ETX+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 12/36頁(yè)
文件大小： 0K
描述： IC AMP AUDIO PWR 20.5W D 36TQFN
標(biāo)準(zhǔn)包裝： 50
類(lèi)型： D 類(lèi)
輸出類(lèi)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(lèi)型： 表面貼裝
供應(yīng)商設(shè)備封裝： 36-TQFN 裸露焊盤(pán)（6x6）
封裝/外殼： 36-WFQFN 裸露焊盤(pán)
包裝： 管件
MAX9742
Single-/Dual-Supply, Stereo 16W,
Class D Amplifier with Differential Inputs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—Single-Supply, Single-Ended Output
(VDD = 24V, VSS = VSUB = LGND = 0V, VSHDN = 3.3V, VMID = 12V, CVDD = 660F, CMID1 = 10F, CMID2 = 10F, R1 = R2 = R3 =
10k, CSFT = 0.47F, COUT = 1000F, CFB_1 = 150pF, CFB_2 = 10pF, CBOOT = 0.1F, CREGP = CREGM = 1F, RIN_ = 30.1k,
RF1A = 121k, RF1B = 562k, RF2 = 681k, RREF = 68k, RL = ∞, TA = TMIN to TMAX, unless otherwise noted. Typical values are at
TA = +25°C.) (Note 2)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VDD to VSS, NSENSE ..............................................-0.3V to +45V
MID, LGND, LVDD, REGM, REGP, OUTR,
OUTL to VSS .......................................................-0.3V to +45V
MID, LGND, LVDD, REGM, REGP, OUTR,
OUTL to VDD.......................................................-45V to +0.3V
REGLS to VSS .........................................................-0.3V to +12V
MID to REGP, REGM...............(VREGM - 0.3V) to (VREGP + 0.3V)
REGP to REGM.......................................................-0.3V to +12V
LVDD to LGND ..........................................................-0.3V to +6V
SHDN to LGND.........................................................-0.3V to +4V
SFT to LGND ............................................................-0.3V to +6V
FB_, IN_+, IN_-, REFCUR to REGP,
REGM ..................................(VREGM - 0.3V) to (VREGP + 0.3V)
BOOTR to OUTR ....................................................-0.3V to +12V
BOOTL to OUTL .....................................................-0.3V to +12V
OUTR, OUTL Shorted to LGND..................................Continuous
Continuous Power Dissipation (TA = +70°C) (Note 1)
Single-Layer Board:
36-Pin TQFN (derate 26.3mW/°C above +70°C) ...........2.11W
Multilayer Board:
36-Pin TQFN (derate 35.7mW/°C above +70°C) ...........2.86W
Junction-to-Ambient Thermal Resistance (θJA)
Single-Layer Board:
36-Pin TQFN.................................................................38°C/W
Multilayer Board:
36-Pin TQFN.................................................................28°C/W
Junction-to-Case Thermal Resistance (θJC) ...................1.4°C/W
Operating Temperature Range ...........................-40°C to +85°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage Range
VDD
(Note 3)
20
40
V
Supply Current
IDD
No load, output filter removed
15
mA
Mute Mode Supply Current
No load, VSFT = 0V (outputs not switching)
8
mA
Shutdown Current
No load, VSHDN = 0V
0.8
1.3
mA
Switching Frequency
fSW
300
kHz
Power-Supply Rejection Ratio
(Note 4)
PSRR
VDD = 24V + 500mVP-P, f = 1kHz
68
dB
Crosstalk
(Notes 5 and 6)
L to R, R to L, RL = 8
, POUT = 1W, f = 1kHz
-78
dB
RL = 8
, fIN = 1kHz, THD+N = 10%
9.5
RL = 8
, fIN = 1kHz, THD+N = 10%,
VDD = 35V
20.5
Continuous Output Power
(Notes 5, 6, and 7)
POUT
RL = 4
, fIN = 1kHz, THD+N = 10%
16
W
Efficiency
(Notes 5, 6, and 7)
RL = 8
, POUT = 9.5W, THD+N = 10%
92
%
Note 1: Actual power capabilities are dependent on PCB layout. See the
Thermal Considerations section.
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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(lèi)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(lèi)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(lèi)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(lèi)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(lèi)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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