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MAX4063

更新时间： 2024-11-22 22:58:03
品牌 Logo 应用领域
美信 - MAXIM 放大器
页数 文件大小 规格书
15页 403K
描述
Differential Microphone Preamplifier with Internal Bias and Complete Shutdown

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MAX4063 数据手册

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19-2753; Rev 0; 1/03  
Differential Microphone Preamplifier with  
Internal Bias and Complete Shutdown  
General Description  
Features  
o 2.4V to 5.5V Single-Supply Operation  
The MAX4063 is a differential-input microphone preampli-  
fier optimized for high-performance, portable applica-  
tions. The device features two selectable inputs,  
differential outputs, adjustable gain, an integrated low-  
noise bias source, and a low-power shutdown mode.  
Two input paths provide both differential and single-  
ended microphone sensing. The high-noise rejection of  
the differential input is ideally suited to an internal micro-  
phone where system noise and long-run PC board traces  
can degrade low-level signals. The single-ended input  
provides a simple connection to an external microphone.  
o Differential Inputs and Outputs  
o Adjustable Gain  
o High 95dB PSRR  
o High 79dB CMRR  
o Low-Noise, Integrated Microphone Bias  
o 750µA Supply Current  
o 0.3µA Shutdown Current  
o
4ꢀV ꢁSD Protection ꢂAꢃUXINꢄ  
o THD+N: 0.05% at 1ꢀHz  
o Available in Space-Saving Pacꢀages  
14-Pin TSSOP  
The differential and single-ended inputs have indepen-  
dent, adjustable gains that are set with a single external  
resistor. Differential outputs provide a full-scale signal of  
up to 6V  
from a single 3V supply, optimizing the  
P-P  
16-Pin Thin QFN ꢂ4mm x 4mm x 0.8mmꢄ  
dynamic range of the amplified signal. A complete shut-  
down mode reduces the supply current to only 0.3µA  
and disables the microphone bias for the ultimate in  
power savings.  
Ordering Information  
PART  
TꢁMP RANGꢁ  
PIN-PACKAGꢁ  
The MAX4063 operates from 2.4V to 5.5V and is specified  
over the extended -40°C to +85°C operating temperature  
range. The MAX4063 is available in both 16-pin thin QFN  
(4mm x 4mm x 0.8mm) and 14-pin TSSOP packages.  
MAX4063ETE*  
MAX4063EUD  
-40°C to +85°C  
-40°C to +85°C  
16 Thin QFN-EP**  
14 TSSOP  
*Future product—contact factory for availability.  
**EP = Exposed paddle.  
Applications  
Notebook Audio Systems  
Tablet PCs  
Typical Operating Circuit  
2.4V TO 5.5V  
PDA Audio Systems  
6
Signal Conditioning  
V
CC  
3
2
7
INT/AUX  
ADJ  
SHDN  
Pin Configurations  
12  
AUX_IN  
4
8
MAX4063  
OUT  
G2  
INT/AUX  
SHDN  
OUT  
1
2
3
4
5
6
7
14 G1  
5
BIAS  
V
13 N.C.  
12 AUX_IN  
11 GND  
10 IN-  
BIAS  
OUT  
MAX4063  
9
IN+  
IN-  
BIAS  
V
9
8
IN+  
CC  
10  
ADJ  
OUT  
G1 G2  
14  
GND  
11  
1
TSSOP  
R
G
Pin Configurations continued at end of data sheet.  
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 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...15

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