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參數(shù)資料
| 型號： | MAX9742ETX+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 32/36頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO PWR 20.5W D 36TQFN |
| 標準包裝： | 50 |
| 類型： | D 類 |
| 輸出類型： | 2 通道（立體聲） |
| 在某負載時最大輸出功率 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： | 消除爆音，差分輸入，靜音，短路和熱保護，關(guān)機 |
| 安裝類型： | 表面貼裝 |
| 供應商設備封裝： | 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
_______________________________________________________________________________________
5
Note 2: All devices are 100% production tested at +25°C. All temperature limits are guaranteed by design.
Note 3: Supply pumping may occur at high output powers with low audio frequencies. Use proper supply bypassing to prevent the
device from entering overvoltage protection due to supply pumping. See the
Supply Pumping Effects and the Supply
Undervoltage and Overvoltage Protection sections.
Note 4: Amplifier inputs AC-coupled to ground.
Note 5: For RL = 4, LF = 22H and CF = 0.68F. For RL = 6, LF = 33H and CF = 0.47F. For RL = 8, LF = 47H and CF =
0.33F.
Note 6: Testing performed with four-layer PCB.
Note 7: Both channels driven in phase.
Note 8: Testing performed with an 8 resistor connected between LC filter output and ground. Mode transitions are controlled by
SHDN. KCP level is calculated as 20log[(peak voltage during mode transition, no input signal) / 1VRMS].
Note 9: Digital input specifications apply to both single-supply and dual-supply operation.
Note 10: Channels driven 180° out-of-phase. Load connected between LC filter outputs.
Note 11: LF = 22H and CF = 0.68F.
Note 12: Testing performed with an 8 resistor connected between LC filter outputs. Mode transitions are controlled by SHDN. KCP
level is calculated as 20log[(peak voltage during mode transition, no input signal) / 1VRMS].
ELECTRICAL CHARACTERISTICS—Single-Supply, BTL Configuration
(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)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output Offset Voltage
(Note 4)
7
mV
VDD = 20V to 40V
88
Power-Supply Rejection Ratio
(Note 4)
PSRR
VDD = 24V + 500mVP-P, f = 1kHz
77
dB
Continuous Output Power
POUT
RL = 8
, fIN = 1kHz, THD+N = 10%,
(Notes 6, 10, and 11)
32
W
Efficiency
RL = 8
, POUT = 10W, THD+N = 10%,
(Notes 5 and 6)
83
%
Total Harmonic Distortion Plus
Noise (Notes 6, 10, and 11)
THD+N
fIN = 1kHz, BW = 22Hz to 22kHz,
RL = 8
, POUT = 10W
0.08
%
Unweighted
90
Signal-to-Noise Ratio
SNR
POUT = 32W, RL = 8
,
BW = 22Hz to 22kHz
(Notes 6, 10, and 11)
A-weighted
96
dB
Shutdown-to-Full Operation
tSON
68
ms
Into shutdown
-47
Click-and-Pop
KCP
Peak voltage, 32-samples
per second, A-weighted
(Notes 4, 11, and 12)
Out of shutdown
-32
dBV
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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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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