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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： | 14/15页 |
| 文件大小： | 559K |
| 代理商： | MAX2658 |
MAX4060/MAX4061/MAX4062
Differential Microphone Preamplifiers with
Internal Bias and Complete Shutdown
8
_______________________________________________________________________________________
Pin Description
PIN
MAX4060
MAX4061
MAX4062
NAME
FUNCTION
1—
2
INT/AUX
Internal (Differential) or Auxiliary (Single-Ended) Input Select. Drive INT/AUX low
to select internal or high to select auxiliary microphone input.
2
3
OUT
Amplifier Output. OUT is high impedance when in shutdown mode.
3
—
BIAS
External Electret Microphone Capsule Bias Output. BIAS has a greater than
2k
Ω output impedance.
44
5
VCC
Power Supply. Bypass the VCC to GND with a 0.1F capacitor.
5
6
IN+
Noninverting Differential Amplifier Input. AC-couple the audio signal into IN+.
6
7
IN-
Inverting Differential Amplifier Input. AC-couple the audio signal into IN-.
7
8
GND
Ground
8
—
9
AUX_IN
Single-Ended Input for Auxiliary Microphone. AC-couple the audio signal into
AUX_IN.
—1
1
G2
Gain-Selectable Input. Connect an external resistor between G1 and G2 to set
the gain for the differential amplifier. (See Adjustable Differential-Gain Setting
section.)
—2
—
SHDN
Shutdown Input. Drive SHDN high for normal operation. Drive SHDN low for
shutdown mode.
—
4
BIAS
External Electret Microphone Capsule Bias Output. Bypass BIAS with 1F
capacitor to ground.
—8
10
G1
Gain-Selectable Input. Connect an external resistor between G1 and G2 to set
the gain for the differential amplifier.
——
—
EP
Exposed Pad (TDFN Only). Internally connected to GND. Connect to a large
ground plane to minimize thermal performance. Not intended as an electrical
connection point.
Detailed Description
The MAX4060/MAX4061/MAX4062 are differential micro-
phone preamplifiers providing high-quality audio, opti-
mized for use in computer and mobile applications.
These devices feature rail-to-rail outputs, very high
power-supply rejection, and common-mode rejection,
making them ideal for low-noise applications. The
MAX4060/MAX4061/MAX4062 are particularly effective
when layout constraints force the microphone amplifier to
be physically remote from the ECM microphone and/or
the rest of the audio circuitry.
The MAX4060/MAX4062 are capable of switching their
output between the differential input and an inverting
single-ended input. INT/AUX selects either the differen-
tial input or single-ended auxiliary input. In addition, the
MAX4060 has an internal bias generator to bias the
microphone in either differential or single-ended
modes. The MAX4061 includes a complete 0.3A shut-
down mode for ultimate power savings. The differential
gain of the MAX4061/MAX4062 is set with a single
resistor connected between the G1 and G2 pins. The
MAX4060 has a fixed gain of 10V/V.
Differential Input
The main microphone input is a low-noise, differential
input structure. This is an almost essential element
when faced with amplification of low-amplitude analog
signals in digitally intense environments such as note-
book PCs or PDAs. Used correctly, the advantages
over a single-ended solution are:
Better power-supply noise rejection.
Less degradation from noise in PC board ground
planes.
The microphone and preamplifier can be placed
physically further apart, easing PC board layout
restrictions.
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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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