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MAX9812

更新时间： 2024-11-24 22:55:07
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达拉斯 - DALLAS 放大器
页数 文件大小 规格书
11页 309K
描述
Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain Microphone Amplifiers with Integrated Bias

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19-2840; Rev 0; 4/03  
Tiny, Low-Cost, Single/Dual-Input, Fixed-Gain  
Microphone Amplifiers with Integrated Bias  
General Description  
Features  
The MAX9812/MAX9813 are single/dual-input, 20dB  
fixed-gain microphone amplifiers. They offer tiny pack-  
aging and a low-noise, integrated microphone bias,  
making them ideal for portable audio applications such  
as notebook computers, cell phones, and PDAs. These  
amplifiers feature a 500kHz bandwidth, Rail-to-Rail®  
outputs, an industry-leading 100dB power-supply rejec-  
tion ratio, and a very low 0.015% THD+N. Power-saving  
features include very low 230µA supply current and a  
total shutdown mode that cuts the combined supply  
and BIAS currents to only 100nA.  
ꢀ PC2001 Compliant  
ꢀ 100dB at 217Hz Power-Supply Rejection Ratio  
ꢀ Very Low 230µA Quiescent Current  
ꢀ Low 0.015% THD+N  
ꢀ Available in Two Versions  
MAX9812L/MAX9813L—2.7V to 3.6V  
MAX9812H/MAX9813H—4.5V to 5.5V  
ꢀ Internal Low-Noise Microphone Bias Supply  
2.3V for MAX9812L/MAX9813L  
4.0V for MAX9812H/MAX9813H  
The MAX9812 is a single amplifier in a 6-pin SC70  
package (2mm x 2.1mm) and the MAX9813 is a dual-  
input amplifier available in an 8-pin SOT23 (3mm x  
3mm) package. The MAX9813 has two inputs allowing  
two microphones to be multiplexed to a single output.  
ꢀ 100nA Low-Power Shutdown Mode  
ꢀ Rail-to-Rail Outputs  
ꢀ 20dB Fixed Gain  
ꢀ Available in Tiny 6-Pin SC70 (2mm x 2.1mm) and  
8-Pin SOT23 (3mm x 3mm) Packages  
ꢀ Extended Temperature Range -40°C to +85°C  
The MAX9812/MAX9813 are offered in two grades. The  
MAX9812L/MAX9813L are optimized for 3.3V supply  
operation (2.7V to 3.6V). The MAX9812H/MAX9813H are  
PC2001 compliant and are optimized for 5V operation  
(4.5V to 5.5V). Both devices are specified over the -40°C  
to +85°C extended operating temperature range.  
Ordering Information  
PIN-  
PART  
TEMP RANGE PACKAGE  
V
(V)  
CC  
Applications  
MAX9812LEXT-T -40 C to +85 C 6 SC70-6  
MAX9812HEXT-T -40 C to +85 C 6 SC70-6  
MAX9813LEKA-T -40 C to +85 C 8 SOT23-8  
MAX9813HEKA-T -40 C to +85 C 8 SOT23-8  
2.7 to 3.6  
4.5 to 5.5  
2.7 to 3.6  
4.5 to 5.5  
Notebook Computers  
PDAs  
Smart Phones  
Pin Configurations, Selector Guide, and Typical Operating  
Circuits appear at end of data sheet.  
Rail-to-Rail is a trademark of Nippon Motorola Ltd.  
Car Kit Adapters  
Digital Cameras  
Video Tape Recorders  
Simplified Block Diagrams  
V
V
CC  
CC  
SHDN  
OUT  
SHDN  
OUT  
REFERENCE  
2.3V (L VERSION)  
4.0V (H VERSION)  
REFERENCE  
2.3V (L VERSION)  
4.0V (H VERSION)  
BIAS  
BIAS  
IN1  
IN2  
IN  
20dB  
20dB  
IN1/IN2  
MAX9812  
MAX9813  
GND  
GND  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...11

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