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MAX13326

更新时间： 2024-11-22 14:58:23
品牌 Logo 应用领域
亚德诺 - ADI 驱动驱动器
页数 文件大小 规格书
21页 1468K
描述
双通道汽车应用、音频线驱动器，提供I2C控制和诊断功能

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MAX13326 数据手册

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EVALUATION KIT AVAILABLE  
MAX13325/MAX13326  
Dual Automotive, Audio Line Drivers  
2
with I C Control and Diagnostic  
General Description  
Features  
S Comprehensive Programmability and Diagnostics  
The MAX13325/MAX13326 dual audio line drivers provide  
a reliable differential interface between automotive audio  
components. The devices feature differential inputs and  
outputs, integrated output diagnostics, and are controlled  
using an I2C interface or operate in stand-alone mode.  
Using I2C Interface  
S Autoretry Function in Stand-Alone Mode  
S Drive Capacitive Loads ≤ 3nF Differentially, ≤ 4nF  
to Ground  
The outputs can deliver up to 4V  
into 100Iloads.  
RMS  
S 112dB Signal-to-Noise Ratio  
The MAX13325 buffers analog audio signals for trans-  
mission over long cable distances with a fixed gain of  
12dB, whereas the MAX13326 provides a 0dB fixed  
gain. The diagnostics on the outputs report conditions  
on a per channel basis, including short to GND, short  
to battery, overcurrent, overtemperature, and excessive  
offset. The output amplifiers can drive capacitive loads  
up to 4nF to ground and 3nF differentially.  
S Low 0.002% THD at 4V  
into 2.7kI Loads  
RMS  
S High PSRR (70dB at 1kHz)  
S High CMRR (80dB at 1kHz)  
S Low Output Noise (3µV  
), MAX13326  
RMS  
S Excellent Channel-to-Channel Matching  
S Load-Dump Transient Protection  
S Protected Output Against Various Short-Circuit  
The outputs are protected according to IEC 61000-4-2  
Q8kV Contact Discharge, and Q15kV Air Gap. The  
MAX13325/MAX13326 are specified from -40NC to  
+105NC and are available in a 28-pin TSSOP package  
with an exposed pad.  
Conditions  
S ESD Protection for 8kV Contact Discharge,  
1ꢀkV Air Gap  
S Long-Distance Drive Capability Typically Up to  
1ꢀm or Greater  
Applications  
Automotive Radio and Rear Seat Entertainment  
Professional Remote Audio Amplifiers  
S Noise-Rejecting Differential Inputs and Outputs  
S Low-Power Shutdown Mode < 10µA  
S Hardware or Software MUTE Function  
S 28-Pin TSSOP Package with Exposed Pad  
Typical Operating Circuit  
Ordering Information  
V
SUP  
+12V  
PIN-  
PACKAGE  
GAIN  
(dB)  
C1  
470nF  
D2**  
* OPTIONAL  
PART  
TEMP RANGE  
C2  
1µF  
+5V  
R1  
1kI  
Q1  
V
C6  
100nF  
L
CP  
CM CHOLD  
-40NC to  
+105NC  
D1  
MAX1332ꢀGUI/V+ 28 TSSOP-EP*  
MAX13326GUI/V+ 28 TSSOP-EP*  
12  
0
ADD1  
ADD0  
SDA  
V
DD  
CHARGE  
PUMP  
C3  
1µF  
-40NC to  
+105NC  
PGND  
2
I
C INTERFACE  
AND  
DIGITAL CONTROL  
SCL  
C4  
10µF  
FLAG  
SHDN  
MUTE  
BIAS  
TO  
/V denotes an automotive qualified part.  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
*EP = Exposed pad.  
MICROPROCESSOR  
C5  
220nF  
BIAS  
CSS  
GND  
C7  
2.2µF  
1nF  
OUTLP  
OUTLM  
INLP  
FROM AUDIO  
SOURCE  
LEFT  
1nF  
INLM  
C8  
2.2µF  
OUTPUT  
DIAGNOSTIC  
ESD  
PROTECTION  
1nF  
1nF  
C9  
2.2µF  
OUTRP  
OUTRM  
INRP  
FROM AUDIO  
SOURCE  
1nF  
RIGHT  
INRM  
C10  
2.2µF  
1nF  
MAX13325  
MAX13326  
*OPTIONAL : NEEDED FOR AUTOMOTIVE LOAD DUMP PROTECTION ONLY  
**USE D2 WHEN CHARGE PUMP IS OFF AND EXTERNAL SUPPLY IS PROVIDED TO C HOLD  
For pricing, delivery, and ordering information, please contact Maxim Direct  
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.  
19-5136; Rev 5; 4/13  
1234567...21

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