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参数资料
| 型号： | MAX2658 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | GPS/GNSS低噪声放大器 |
| 中文描述： | GPS/GNSS低噪声放大器 |
| 文件页数： | 3/15页 |
| 文件大小： | 559K |
| 代理商： | MAX2658 |
MAX4060/MAX4061/MAX4062
Differential Microphone Preamplifiers with
Internal Bias and Complete Shutdown
______________________________________________________________________________________
11
MAX4061/MAX4062
The MAX4062 has a lower bias voltage and low-imped-
ance outputs (optimum electret bias resistor can then
be set externally). This gives a low-noise, flexible solu-
tion that can run from 2.4V to 5.5V, suitable for hand-
held devices such as PDAs that typically have audio
power supplies in the 3V region (see Figure 3).
In applications where the differential microphone is
placed some distance from the MAX4060/MAX4061/
MAX4062, using a remote differential bias scheme as
shown in Figure 4 can provide improved noise rejection.
Output
MAX4060/MAX4061 DC Bias
The output voltage has a DC-bias voltage independent
of the power supplies, resulting in superior PSRR per-
formance. The MAX4061 output is high impedance
when the part is in shutdown mode. AC-coupling the
output into the next audio stage (e.g., CODEC) is rec-
ommended.
Applications Information
Shutdown Mode
The MAX4061 features a low-power, complete shut-
down mode. When SHDN goes low, the supply current
drops to 0.3μA, the output enters a high-impedance
state, and the bias current to the microphone is
switched off. Driving SHDN high enables the amplifier.
SHDN should not be left unconnected.
Power Supplies and Layout
The MAX4060 operates from a 4.5V to 5.5V single sup-
ply and the MAX4061/MAX4062 operate from a 2.4V to
5.5V single supply. Bypass the power supply with a
0.1μF capacitor to ground. In systems where analog
and digital grounds are available, the MAX4060/
MAX4061 should be connected to the analog ground.
IN-
IN+
6
5
4
VCC
4.5V TO 5.5V
MAX4060
INT/AUX
1
OUT
2
GND
7
x10
VBIAS
x10
BIAS
3
AUX_IN
MICROPHONE
INPUT
8
RBIAS
Figure 2. MAX4060 Used for Biasing a Microphone
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX2658AEVKIT+ | 功能描述:放大器 IC 开发工具 MAX2658A Eval Kit 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 |
| MAX2658EVKIT+ | 功能描述:射频开发工具 MAX2658 Eval Kit RoHS:否 制造商:Taiyo Yuden 产品:Wireless Modules 类型:Wireless Audio 工具用于评估:WYSAAVDX7 频率: 工作电源电压:3.4 V to 5.5 V |
| MAX2658EWT+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX2658EWT+T | 功能描述:射频放大器 GPS/GNSS Low Noise Amp RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
| MAX2658EWT+T10 | 功能描述:射频放大器 GPS/GNSS Low Noise Amp RoHS:否 制造商:Skyworks Solutions, Inc. 类型:Low Noise Amplifier 工作频率:2.3 GHz to 2.8 GHz P1dB:18.5 dBm 输出截获点:37.5 dBm 功率增益类型:32 dB 噪声系数:0.85 dB 工作电源电压:5 V 电源电流:125 mA 测试频率:2.6 GHz 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-16 封装:Reel |
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