MAX13326GUI/V+T Maxim Integrated Products, MAX13326GUI/V+T Datasheet

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MAX13326GUI/V+T

Manufacturer Part Number
MAX13326GUI/V+T
Description
IC AUD LINE DVR DL AUTO 28TSSOP
Manufacturer
Maxim Integrated Products
Type
Line Driver, Transmitterr
Datasheet

Specifications of MAX13326GUI/V+T

Applications
Automotive Audio
Mounting Type
Surface Mount
Package / Case
28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
19-5136; Rev 3; 6/10
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 I
The outputs can deliver up to 4V
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.
The outputs are protected according to IEC 61000-4-2
Q8kV
MAX13325/MAX13326 are specified from
+105NC and are available in a 28-pin TSSOP package
with an exposed pad.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MICROPROCESSOR
FROM AUDIO
FROM AUDIO
100nF
SOURCE
SOURCE
C6
TO
Contact Discharge, and Q15kV Air Gap. The
Automotive Radio and Rear Seat Entertainment
Professional Remote Audio Amplifiers
2
2.2µF
2.2µF
2.2µF
2.2µF
C10
C7
C8
C9
C interface or operate in stand-alone mode.
**USE D2 WHEN CHARGE PUMP IS OFF AND EXTERNAL SUPPLY IS PROVIDED TO C HOLD
*OPTIONAL : NEEDED FOR AUTOMOTIVE LOAD DUMP PROTECTION ONLY
SHDN
MUTE
ADD1
ADD0
INRM
FLAG
INLM
INLP
INRP
Typical Operating Circuit
SDA
SCL
_______________________________________________________________ Maxim Integrated Products 1
DIGITAL CONTROL
I
2
C INTERFACE
+5V
AND
V
L
RIGHT
LEFT
General Description
MAX13325
MAX13326
Dual Automotive, Audio Line Drivers
DIAGNOSTIC
OUTPUT
CP
470nF
RMS
C1
CM
CHARGE
PUMP
BIAS
CHOLD
PROTECTION
1 µ F
Applications
C2
into 100I loads.
ESD
with I
D2**
V
V
PGND
BIAS
CSS
GND
OUTLP
OUTLM
OUTRP
OUTRM
SUP
DD
* OPTIONAL
1kI
R1
D1
1nF
1nF
1nF
1nF
-40NC to
C4
10µF
C5
220nF
1nF
1nF
+12V
2
Q1
C3
1µF
C Control and Diagnostic
S Comprehensive Programmability and Diagnostics
S Autoretry Function in Stand-Alone Mode
S Drive Capacitive Loads ≤ 3nF Differentially, ≤ 4nF
S 112dB Signal-to-Noise Ratio
S Low 0.002% THD at 4V
S High PSRR (70dB at 1kHz)
S High CMRR (80dB at 1kHz)
S Low Output Noise (3µV
S Excellent Channel-to-Channel Matching
S Load-Dump Transient Protection
S Protected Output Against Various Short-Circuit
S ESD Protection for ±8kV Contact Discharge,
S Long-Distance Drive Capability Typically Up to
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
/V Denotes an automotive qualified part.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
MAX13325GUI/V+ 28 TSSOP-EP*
MAX13326GUI/V+ 28 TSSOP-EP*
Using I
to Ground
Conditions
±15kV Air Gap
15m or Greater
PART
2
C Interface
PIN-
PACKAGE
Ordering Information
RMS
RMS
into 2.7kI Loads
), MAX13326
TEMP RANGE
-40NC to
-40NC to
+105NC
+105NC
Features
GAIN
(dB)
12
0

Related parts for MAX13326GUI/V+T

MAX13326GUI/V+T Summary of contents

Page 1

... 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 _______________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 2 ...

Page 2

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic ABSOLUTE MAXIMUM RATINGS V to PGND ........................................................-0.3V to +28V DD CHOLD .................................................................-0.3V to +28V V to GND ...............................................................-0.3V to +6V L GND, PGND ........................................................-0.3V to +0.3V OUT_ to ...

Page 3

Dual Automotive, Audio Line Drivers ELECTRICAL CHARACTERISTICS (continued 14.4V 5V load impedance from OUT_+ to OUT_ unless otherwise noted.) (Note 2) PARAMETER SYMBOL Differential Mode Output Balance OUT_+ to ...

Page 4

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic ELECTRICAL CHARACTERISTICS (continued 14.4V 5V load impedance from OUT_+ to OUT_ unless otherwise noted.) (Note 2) PARAMETER ...

Page 5

Dual Automotive, Audio Line Drivers DIGITAL CHARACTERISTICS (V = 14.4V 3.3V -40NC to +105NC, typical values are PARAMETER SYMBOL DIGITAL INTERFACE Input-Voltage High V Input-Voltage Low Input-Voltage Hysteresis Input ...

Page 6

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic ( V = 14.4V 5V 1kI, gain = 12dB SHUTDOWN CURRENT vs. TEMPERATURE 0.40 NO LOAD 0.35 INPUTS SHORTED V ...

Page 7

Dual Automotive, Audio Line Drivers ( V = 14.4V 5V 1kI, gain = 12dB GAIN ERROR vs. TEMPERATURE 0.020 0.015 0.010 0.005 LEFT CHANNEL 0 -0.005 -0.010 -0.015 RIGHT CHANNEL -0.020 -40 ...

Page 8

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic TOP VIEW PIN NAME 1 BIAS Analog Bias Voltage. Bypass BIAS to GND with a 10FF capacitor. Logic Supply Voltage. Connect capacitor ...

Page 9

Dual Automotive, Audio Line Drivers PIN NAME Address Inputs. Connect ADD0 and ADD1 ADD0 Connect ADD0 and ADD1 to GND for stand-alone mode. 15 SCL Serial Clock 16 SDA Serial-Data ...

Page 10

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic Table 2. Configuration Register Format ADDRESS FUNCTION CODE (HEX) D7 Configuration 0x00 DIAG Register DIAG: Set DIAG enable diagnostic mode. Write '0' to disable diagnostic ...

Page 11

Dual Automotive, Audio Line Drivers Table 4. General Fault Register Format ADDRESS FUNCTION CODE (HEX) D7 General Fault 0x02 x Register TWARN: The TWARN bit is set to ‘1’ when the temperature warning threshold is reached. TSHDN: The TSHDN is ...

Page 12

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic Table 7. Flag Register Format ADDRESS FUNCTION CODE D7 (HEX) FLAG 0x05 FLAG Register FLAG: FLAG bit is set to ‘1’ when the FLAG output is logic-low. The ...

Page 13

Dual Automotive, Audio Line Drivers Table 10. Right-Channel Mask Register ADDRESS FUNCTION CODE D7 (HEX) Right-Channel 0x08 MSVDDR Mask Register MSVDDR: Set MSVDDR enable the short to V MSGNDR: Set MSGNDR enable the short ...

Page 14

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic Output Short to GND When in diagnostic mode, the MAX13325/MAX13326 detect if any of the differential outputs is shorted to ground. Upon detection of the short to ground, ...

Page 15

Dual Automotive, Audio Line Drivers When in diagnostic mode with mute enabled, if there is excessive offset on any output, the MAX13325/ MAX13326 reports the condition through the I face and the FLAG output. See Table 14. When in diagnostic ...

Page 16

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic Table 17. Overvoltage Diagnostic FAULT CONDITION STATUS REPORT FLAG is asserted low. FLAG bit set. See Table 7. DUMP bit is set in the GFAULT register. See Table ...

Page 17

Dual Automotive, Audio Line Drivers START and STOP Conditions A master device initiates communication by issuing a START condition, which is a high-to-low transition on SDA with SCL high. A START condition from the master signals the beginning of a ...

Page 18

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic of an unsuccessful data transfer, the bus master may retry communication. The master must pull down SDA during the 9th clock cycle to acknowledge receipt of data when ...

Page 19

Dual Automotive, Audio Line Drivers SLAVE ADDRESS SLAVE ADDRESS Figure 7. A Single-Byte Read Operation SLAVE ADDRESS SLAVE ADDRESS Figure 8. A ...

Page 20

Dual Automotive, Audio Line Drivers 2 with I C Control and Diagnostic Power-Supply Bypass Capacitor (C3) The power-supply bypass capacitor (see the Typical Operating Circuit) lowers the output impedance of the power supply, and reduces the impact of the MAX13325/ ...

Page 21

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2010 Maxim Integrated Products © ...

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