参数资料
| 型号： | MAX9756EVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/13页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX9756 |
| 标准包装： | 1 |
| 类型： | 放大器：AB 类音频放大器 |
| 适用于相关产品： | MAX9756 |
| 所含物品： | 完全组装的评估板 |
MAX9756 Evaluation Kit
The volume of the speakers and the headphone are
adjustable over 31 discrete steps by the thumb-wheel
potentiometer (R2) connected to the analog volume
control (VOL). The maximum gain of the MAX9756 is
selectable by jumpers JU2, JU3, and JU4.
The MAX9756 features an ALC that automatically con-
trols output power to the speaker preventing loud-
speaker overload and provides optimized dynamic
range. The MAX9756 also features an audible alert
input (PC_BEEP).
The MAX9756 has an internal low-dropout linear regula-
tor capable of delivering 150mA. The regulator is
adjustable down to 1.23V and has a preset voltage of
4.65V. The speaker and headphone outputs on the EV
kit can be selected by jumper JU5 and the headphone
jack J1. See Table 3 in the Jumper Selection section.
Table 1. JU1 Jumper Selection
Jumper Selection
Headphone Power Supply
Jumper JU1 connects the headphone power supply
(HPVDD) to the main power supply (VDD). To use a dif-
ferent voltage for the headphone, remove the shunt
from JU1 and connect the voltage source to the
HPVDD and HPGND pads.
Gain Selection
Jumpers JU2, JU3, and JU4 provide an option to set
the maximum gain of the speakers and headphone
amplifiers on the EV kit. See Table 2 for shunt positions.
Speaker/Headphone Mode (HPS)
Jumper JU5 selects between the speaker mode and
the headphone mode. See Table 3 for shunt positions.
SHUNT POSITION
Installed*
Not installed
FUNCTION
The headphone power-supply input (HPVDD) is powered from the main power supply (VDD).
Connect a voltage source to the HPVDD and HPGND pads.
* Default position.
Table 2. JU2/JU3/JU4 Jumper Selection
SHUNT POSITION
SPEAKER MODE GAIN,
HEADPHONE MODE GAIN,
JU4
(GAIN3)
2-3
2-3
2-3
2-3
1-2
1-2
1-2
1-2*
JU3
(GAIN2)
2-3
2-3
1-2
1-2
2-3
2-3
1-2
1-2*
JU2
(GAIN1)
2-3
1-2
2-3
1-2
2-3
1-2
2-3
1-2*
JU5 NOT INSTALLED
(dB)
+15
+16.5
+18
+19.5
+21
+22.5
+24
+25.5
JU5 INSTALLED
(dB)
0
0
+3
+3
0
0
+3
+3
* Default position.
Table 3. JU5 Jumper Selection
SHUNT POSITION
None
Installed* (No headphone plugged into J1)
Installed (Headphone plugged into J1)
* Default position.
Forced headphone mode
Speaker mode
Headphone mode
FUNCTION
_______________________________________________________________________________________
3
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| MAX9757ETJ+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 |
| MAX9758ETJ+ | 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 |
| MAX9758ETJ+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 |
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