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| 型号： | MAX9814ETD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/14页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO MONO AB MIC 14TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | AB 类 |
| 输出类型： | 1-通道（单声道） |
| 电源电压： | 2.7 V ~ 5.5 V |
| 特点： | AGC，麦克风，关机 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 14-TDFN-EP（3x3） |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 产品目录页面： | 1392 (CN2011-ZH PDF) |
| 其它名称： | MAX9814ETD+TDKR |
AVAILABLE
EVALUATION KIT AVAILABLE
Functional Diagrams
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
General Description
The MAX9814 is a low-cost, high-quality microphone
amplifier with automatic gain control (AGC) and low-
noise microphone bias. The device features a low-noise
preamplifier, variable gain amplifier (VGA), output
amplifier, microphone-bias-voltage generator and AGC
control circuitry.
The low-noise preamplifier has a fixed 12dB gain, while
the VGA gain automatically adjusts from 20dB to 0dB,
depending on the output voltage and the AGC thresh-
old. The output amplifier offers selectable gains of 8dB,
18dB, and 28dB. With no compression, the cascade of
the amplifiers results in an overall gain of 40dB, 50dB,
or 60dB. A trilevel digital input programs the output
amplifier gain. An external resistive divider controls the
AGC threshold and a single capacitor programs the
attack/release times. A trilevel digital input programs
the ratio of attack-to-release time. The hold time of the
AGC is fixed at 30ms. The low-noise microphone-bias-
voltage generator can bias most electret microphones.
The MAX9814 is available in the space-saving, 14-pin
TDFN package. This device is specified over the
-40°C to +85°C extended temperature range.
Applications
Features
Automatic Gain Control (AGC)
Three Gain Settings (40dB, 50dB, 60dB)
Programmable Attack Time
Programmable Attack and Release Ratio
2.7V to 5.5V Supply Voltage Range
Low Input-Referred Noise Density of 30nV/√Hz
Low THD: 0.04% (typ)
Low-Power Shutdown Mode
Internal Low-Noise Microphone Bias, 2V
Available in the Space-Saving, 14-Pin TDFN (3mm
x 3mm) Package
-40°C to +85°C Extended Temperature Range
Microphone Amplifier with AGC and
Low-Noise Microphone Bias
Ordering Information
Simplified Block Diagram
LOW-NOISE
REFERENCE
AGC
2.7V TO 5.5V
LNA
+12dB
VGA
+20dB/0dB
GAIN
+8/+18/
+28dB
MICBIAS
RMICBIAS
MICIN
MICOUT
COUT
GND
CIN
VDD
SHDN
MAX9814
PART
TEMP RANGE
PIN-PACKAGE
MAX9814ETD+T
-40°C to +85°C
14 TDFN-EP*
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*
EP = Exposed pad.
Pin Configurations appear at end of data sheet.
Digital Still Cameras
Digital Video Cameras
PDAs
Bluetooth Headsets
Entertainment Systems
(e.g., Karaoke)
Two-Way Communicators
High-Quality Portable
Recorders
IP Phones/Telephone
Conferencing
MAX9814
19-0764; Rev 2; 6/09
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9814EVKIT+ | 功能描述:音频 IC 开发工具 MAX9814 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| MAX981CPA | 功能描述:校验器 IC Single 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 |
| MAX981CPA+ | 功能描述:校验器 IC Single 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 |
| MAX981CSA | 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 |
| MAX981CSA+ | 功能描述:校验器 IC Single 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 |
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