- 您现在的位置：买卖IC网 > PDF目录10265 > MAX9752AETI+ (Maxim Integrated Products)IC AMP AUDIO PWR 2.2W D 28TQFN PDF资料下载
参数资料
| 型号： | MAX9752AETI+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/29页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 2.2W D 28TQFN |
| 标准包装： | 60 |
| 系列： | DirectDrive® |
| 类型： | D 类 |
| 输出类型： | 2-通道（立体声）带立体声耳机 |
| 在某负载时最大输出功率 x 通道数量： | 2.2W x 2 @ 4 欧姆; 62mW x 2 @ 16 欧姆 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 特点： | 消除爆音，短路保护和热保护，关机，音量控制 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 28-TQFN-EP（5x5） |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 包装： | 管件 |
第1页第2页第3页第4页第5页第6页第7页当前第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页第29页
MAX9752/MAX9753/MAX9754
Table 2 shows the amplifier gain settings needed to
attain maximum speaker output power from a given
input voltage and load.
MAX9753/MAX9754
The gain of the MAX9753/MAX9754 is set by GAIN.
Drive GAIN high to set the gain of the speaker ampli-
fiers to 9dB, and the gain of the headphone amplifiers
to 0dB. Drive GAIN low to set the gain of the speaker
amplifiers to 10.5dB, and the gain of the headphone
amplifiers to 3dB (Table 3).
Table 4 shows the amplifier input voltage needed to
attain maximum speaker output power from a given
gain setting and load.
Analog Volume Control (VOL, MAX9752)
The MAX9752 features an analog volume control that
varies the speaker and headphone amplifier’s gain in 31
discrete steps based upon the DC voltage applied to
VOL. The input range of VOL is from 0 (full volume) to
0.858 x HPVDD (full mute). Example step sizes are shown
in Table 5. Control VOL with either a DAC or potentiome-
ter as shown in Figure 9. Because the VOL input is high
impedance (typically 100M
Ω), it can also be driven with
an RC-filtered PWM signal. Connect the reference of the
DAC or potentiometer to HPVDD. Since the volume con-
trol is ratiometric to HPVDD, any changes in HPVDD are
negated. The gain step sizes are not constant, the step
sizes at the upper extreme are 0.5dB/step, 2.0dB/step in
the midrange, and 4.0dB/step at the lower extreme.
Figure 10 shows the transfer function of the volume con-
trol for HPVDD = 3.3V.
2.2W, Low-EMI, Stereo, Class D Power Amplifiers
with DirectDrive Headphone Amplifiers
16
______________________________________________________________________________________
Table 2. MAX9752 Speaker Amplifier Gain
Settings for Maximum Output Power
GAIN
(dB)
INPUT
(VRMS)
RL
(
Ω)
POUT
(W)
MAX9752A
9.0
1.004
4
2.0
10.5
0.844
4
2.0
12.0
0.710
4
2.0
13.5
0.598
4
2.0
9.0
1.099
8
1.2
10.5
0.925
8
1.2
12.0
0.778
8
1.2
13.5
0.655
8
1.2
MAX9752B
15.0
0.503
4
2.0
16.5
0.423
4
2.0
18.0
0.356
4
2.0
19.5
0.300
4
2.0
15.0
0.551
8
1.2
16.5
0.464
8
1.2
18.0
0.390
8
1.2
19.5
0.328
8
1.2
MAX9752C
6.0
1.418
4
2.0
7.5
1.193
4
2.0
9.0
1.004
4
2.0
10.5
0.844
4
2.0
6.0
1.553
8
1.2
7.5
1.307
8
1.2
9.0
1.099
8
1.2
10.5
0.925
8
1.2
Table 3. MAX9753/MAX9754 Maximum
Gain Settings
GAIN
SPEAKER MODE
GAIN (dB)
HEADPHONE MODE
GAIN (dB)
0
10.5
3
1
9.0
0
Table 4. MAX9753/MAX9754 Input Voltage
and Gain Settings for Maximum Output
Power
GAIN
(dB)
INPUT
(VRMS)
RL
(
Ω)
POUT
(W)
10.5
0.844
4
2.0
9.0
1.004
4
2.0
10.5
0.925
8
1.2
9.0
1.099
8
1.2
相关PDF资料 |
PDF描述 |
|---|---|
| MAX9755ETI+ | IC AMP AUDIO PWR 2.6W AB 28TQFN |
| VE-B3P-MW-S | CONVERTER MOD DC/DC 13.8V 100W |
| V110A3V3H150B3 | CONVERTER MOD DC/DC 3.3V 150W |
| VE-B3K-MW-S | CONVERTER MOD DC/DC 40V 100W |
| AAA7FBZ | CONN PLUG FEMALE 7PIN SILVER BLK |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9752AETI+ | 功能描述:音频放大器 Integrated Circuits (ICs) 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 |
| MAX9752AETI+T | 功能描述:音频放大器 Integrated Circuits (ICs) 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 |
| MAX9752AEVKIT | 功能描述:放大器 IC 开发工具 RoHS:否 制造商:International Rectifier 产品:Demonstration Boards 类型:Power Amplifiers 工具用于评估:IR4302 工作电源电压:13 V to 23 V |
| MAX9752BETI+ | 功能描述:音频放大器 Integrated Circuits (ICs) 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 |
| MAX9752BETI+T | 功能描述:音频放大器 Integrated Circuits (ICs) 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 |
发布紧急采购，3分钟左右您将得到回复。