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参数资料
| 型号： | MAX9744ETH+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/28页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 22.5W D 44TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | D 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 22.5W x 2 @ 4 欧姆 |
| 电源电压： | 4.5 V ~ 14 V |
| 特点： | 消除爆音，静音，短路和热保护，关机，音量控制 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 44-TQFN-EP（7x7） |
| 封装/外壳： | 44-WFQFN 裸露焊盘 |
| 包装： | 标准包装 |
| 其它名称： | MAX9744ETH+TDKR |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
MAX9744
20W Stereo Class D Speaker Amplifier
with Volume Control
12
______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1
BOOTL+
Left-Channel Positive Speaker Output Boost Flying-Capacitor Connection. Connect a 0.1F
ceramic capacitor between BOOTL+ and OUTL+.
2, 3
OUTL+
Left-Channel Speaker Output, Positive Phase
4, 5, 29, 30
PVDD
Speaker Amplifier Power-Supply Input. Bypass each with a 1F capacitor to PGND.
6, 10, 21, 28
VDD
Power-Supply Input. Bypass each with a 1F capacitor to GND.
7, 11, 12, 15, 27
GND
Ground
8
SDA/VOL
I2C Serial Data I/O and Analog Volume Control Input
9
SCLK/PWM
I2C Serial Clock Input and Modulation Scheme Select. In I2C mode (ADDR1 and ADDR2
≠ GND),
acts as I2C serial clock input. When ADDR1 and ADDR2 = GND, set SCLK = 1 for standard PWM
output scheme, or set SCLK = 0 for filterless modulation output scheme.
13
ADDR1
Address Select Input 1. Sets device address for I2C address option. Connect ADDR1 and ADDR2
to GND to select analog volume control mode.
14
ADDR2
Address Select Input 2. Sets device address for I2C address option. Connect ADDR1 and ADDR2
to GND to select Analog Volume Control mode.
16
INL
Left-Channel Audio Input
17
FBL
Left-Channel Feedback. Connect feedback resistor between FBL and INL to set amplifier gain. See
the Gain-Setting Resistors section.
18
FBR
Right-Channel Feedback. Connect feedback resistor between FBR and INR to set amplifier gain.
See the Gain-Setting Resistors section.
19
INR
Right-Channel Input
20
BIAS
Common-Mode Bias Voltage. Bypass with a 2.2F capacitor to GND.
22
SHDN
Shutdown Input. Drive SHDN low to disable the audio amplifiers. Connect SHDN to VDD or drive
high for normal operation.
23
N.C.
No Connection. Not internally connected.
24
MUTE
Mute Input. Drive MUTE high to mute the speaker outputs. Connect MUTE to GND for normal
operation (mute function controls speaker outputs only).
25
SYNC
Frequency Select and External Clock Input.
SYNC = GND: Fixed-frequency mode with fSYNC = 1200kHz
SYNC = Unconnected: Fixed-frequency mode with fSYNC = 1440kHz
SYNC = VDD: Spread-spectrum mode with fSYNC = 1200kHz ±30kHz
SYNC = Clocked: Fixed-frequency mode with fSYNC = external clock frequency. fSW = 1/4 the
value of fSYNC.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9744EVCMAXQU+ | 功能描述:音频放大器 Evaluation Kit/Evaluation System for the MAX9744 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9744EVKIT+ | 功能描述:音频放大器 Evaluation Kit/Evaluation System for the MAX9744 RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX974CPE | 功能描述:校验器 IC RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX974CPE+ | 功能描述:校验器 IC Dual Comparator / Reference RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
| MAX974CSE | 功能描述:校验器 IC RoHS:否 制造商:STMicroelectronics 产品: 比较器类型: 通道数量: 输出类型:Push-Pull 电源电压-最大:5.5 V 电源电压-最小:1.1 V 补偿电压（最大值）:6 mV 电源电流（最大值）:1350 nA 响应时间: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SC-70-5 封装:Reel |
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