MAXIM MAX13335E, MAX13336E User Manual

EVALUATION KIT AVAILABLE

19-6168; Rev 0; 1/12

MAX13335E/MAX13336E

Dual Automotive Differential Audio Receivers

with I2C Control and Diagnostics

General Description

The MAX13335E/MAX13336E are high-fidelity stereo audio input amplifiers designed for automotive applications requiring audio-level detection and/or jack sensing capability.

The devices feature a dual-channel, low-noise, programmable gain amplifier that accepts fully differential and quasi-differential input signals with diagnostics capability controlled through an I2C interface. The devices’ audio receiver can also pair with the MAX13325/MAX13326 audio transmitter to form a complete differential audio link in automotive systems.

Each channel of the device features high common-mode rejection ratio (CMRR) (80dB), enabling the recovery of audio signals in the presence of large common-mode noise in automotive environments. An integrated programmable gain amplifier is adjustable from -14dB to +16dB (MAX13335E) and -22dB to +8dB (MAX13336E) with zero-crossing detection to provide an optimum output-signal level and limit zip noise. The external flexible diagnostic inputs can be configured to perform jack sense functions or to detect short-to-battery, short-toground, open load, and shorts between channels.

The audio inputs are protected against ISO 10605 Q15kV Air Gap and Q8kV Contact Discharge ESD pulses. Both devices have a -40NC to +105NC operating temperature range, and are available in a 16-pin QSOP package.

Features

S +3.3V or +5V Operation

S +28V to -16V Tolerant Inputs

S Wide Common-Mode Input Range (-5V to +11.5V)

S Fully Differential Inputs Up to 7V

S Quasi-Differential Inputs Up to 3.5V

S Audio Presence Detection

S Jack Sense Detection

S Diagnostic Capability

S Programmable Gain with Zero-Crossing Detection

S I2C Control Interface

S Automotive Grade ESD Protection

 ISO 10605 ±15kV Air Gap  ±8kV Contact Discharge

RMS

Applications

Radio Head Units

RSA/RSE

Connectivity Modules

Automotive Telematics

Ordering Information appears at end of data sheet.

For related parts and recommended products to use with this part, refer to www.maxim-ic.com/MAX13335E.related.

Typical Application Circuits

MAX13335E/MAX13336E

MAX13325

DIAGNOSTICS

MAX13326

PGA

Typical Application Circuits continued at end of data sheet.

�� 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.

I2C

AND

CONTROL

MAX13335E/MAX13336E

Dual Automotive Differential Audio Receivers

with I2C Control and Diagnostics

ABSOLUTE MAXIMUM RATINGS

VDD to GND ............................................................. -0.3V to +6V

D_ to GND .............................................................. -16V to +28V

INL_, INR_ to GND ................................................. -10V to +15V

OUTR, OUTL to GND ............................... -0.3V to (VDD + 0.3V)

SDA, SCL, INT to GND ............................................ -0.3V to +6V

REF to GND .............................................. -0.3V to (VDD + 0.3V)

Output Short-Circuit Duration ....................................Continuous

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

PACKAGE THERMAL CHARACTERISTICS (Note 1)

QSOP

Junction-to-Ambient Thermal Resistance (BJA) .....103.7NC/W

Junction-to-Case Thermal Resistance (BJC) ...............37NC/W

Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.

Continuous Power Dissipation (TA = +70NC)

QSOP (derate 9.6 mW/NC above +70°C) ................771.5 mW

Operating Junction Temperature Range ......... -40NC to +150NC

Storage Temperature Range ............................ -65NC to +150NC

Lead Temperature (soldering, 10s) ................................+300NC

Soldering Temperature (reflow) ......................................+260NC

ELECTRICAL CHARACTERISTICS

(VDD = 5V, AV = -6dB, RL = 10kI, f = 20Hz to 20kHz, TA = TJ = -40NC to +105NC, unless otherwise noted. Typical values are at TA = 25NC under normal conditions, unless otherwise noted.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

GENERAL

V

= 1.68V -5% 3.3 +5%

Supply-Voltage Range V

Quiescent Supply Current I

Shutdown Supply Current I

REF Output Voltage V

Thermal Shutdown T

Thermal Shutdown Hysteresis T

DD

SHDN

REF

SHDN

HYS

REF

V

= 2.5V -5% 5.0 +5%

REF

V

= V

INL_

SHDN bit = 1 6 10

V

= 3.3V -4% 1.68 +4%

DD

V

= 5V -3% 2.5 +3%

DD

(Note 3) +150 °C

(Note 3) 15 °C

= VDD/2 11 mA

INR_

FA

V

�� Maxim Integrated Products 2

MAX13335E/MAX13336E

Dual Automotive Differential Audio Receivers

with I2C Control and Diagnostics

ELECTRICAL CHARACTERISTICS (continued)

(VDD = 5V, AV = -6dB, RL = 10kI, f = 20Hz to 20kHz, TA = TJ = -40NC to +105NC, unless otherwise noted. Typical values are at TA = 25NC under normal conditions, unless otherwise noted.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

AMPLIFIERS

Programmable Gain Amp A

Gain Error A

Gain Matching A

V

ERR

MCH

G_[3:0] = 0000

G_[3:0] = 0001 -12

G_[3:0] = 0010 -10

G_[3:0] = 0011 -8

G_[3:0] = 0100 -6

G_[3:0] = 0101 -4

G_[3:0] = 0110 -2

G_[3:0] =0111 0

G_[3:0] =1000 2

G_[3:0] =1001 4

G_[3:0] =1010 6

G_[3:0] =1011 8

G_[3:0] =1100 10

G_[3:0] =1101 12

G_[3:0] =1110 14

G_[3:0] =1111 16

G_[3:0] = 0000

G_[3:0] = 0001 -20

G_[3:0] = 0010 -18

G_[3:0] = 0011 -16

G_[3:0] = 0100 -14

G_[3:0] = 0101 -12

G_[3:0] = 0110 -10

G_[3:0] =0111 -8

G_[3:0] =1000 -6

G_[3:0] =1001 -4

G_[3:0] =1010 -2

G_[3:0] =1011 0

G_[3:0] =1100 2

G_[3:0] =1101 4

G_[3:0] =1110 6

G_[3:0] =1111 8

Within VCM operating range

MAX13335E

MAX13336E

-14

-22

Q0.4

dB

�� Maxim Integrated Products 3

MAX13335E/MAX13336E

Dual Automotive Differential Audio Receivers

with I2C Control and Diagnostics

ELECTRICAL CHARACTERISTICS (continued)

(VDD = 5V, AV = -6dB, RL = 10kI, f = 20Hz to 20kHz, TA = TJ = -40NC to +105NC, unless otherwise noted. Typical values are at TA = 25NC under normal conditions, unless otherwise noted.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input Offset Voltage V

Input Impedance R

Common-Mode Rejection Ratio A

Power-Supply Rejection Ratio A

Input Voltage Range V

Input Common-Mode Voltage Range

IOS

CMRR

PSRR

V

CM

AV = 0dB -10 +10 mV

Differential

IN

Single-ended

Within VCM range, f = DC, AV = -2dB (Note 4)

VCM = 2V f = 20Hz to 20kHz (Note 3)

Within VCM range, f = DC, AV = -10dB (Note 4)

VCM = 2V f = 20Hz to 20kHz (Note 3)

f = 1kHz, V

Quasi-differential source, VDD = 3.3V

Quasi-differential source, VDD = 5V

Differential source, V

DD

Differential source, V

IN

DD

Quasi-differential source, VDD = 3.3V

Quasi-differential source, VDD = 5V

Differential source, V

DD

Differential source, V

DD

V

DD

V

DD

V

DD

V

DD

,

RMS

,

RMS

RIPPLE

= 3.3V

= 5V

= 3.3V

= 5V

= 3.3V

= 5V -1.8 7.0

= 3.3V

= 5V -5.0 11.5

MAX13335E 13.5 22 33

MAX13336E 19 30 42

MAX13335E 8.5 14 21

MAX13336E 11 17 24

60 80

MAX13335E

60

65 85

MAX13336E

65

= 200mV

(Note 3) -80 dB

P-P

MAX13335E

MAX13336E

MAX13335E

MAX13336E

-1.2 4.6

-3.3 7.6

1.3

2

2.6

4.0

2.3

3.5

4.6

7.0

V

kI

dB

RMS

V

�� Maxim Integrated Products 4

MAX13335E/MAX13336E

Dual Automotive Differential Audio Receivers

with I2C Control and Diagnostics

ELECTRICAL CHARACTERISTICS (continued)

(VDD = 5V, AV = -6dB, RL = 10kI, f = 20Hz to 20kHz, TA = TJ = -40NC to +105NC, unless otherwise noted. Typical values are at TA = 25NC under normal conditions, unless otherwise noted.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

V

-

Output Voltage Range V

Total Harmonic Distortion Plus Noise

OUT

THD+N f = 1kHz, V

Signal-to-Noise Ratio SNR

Output Noise V

RL = 10kW

V

OUT_

(Note 3)

AV = 0dB, unweighted

N

(Note 3)

= 1.4V

OUT_

RMS

= 1.4V

(Note 3) 0.01 %

RMS

MAX13335E 104.8

MAX13336E 99.4

MAX13335E 8 MAX13336E 15

0.1

Slew Rate SR CL = 300pF (Note 3) 0.5

Maximum Capacitive Load C

Crosstalk A

XTALKVIN

Mute Attenuation A

Shutdown Attenuation A

SHDN

MUTE

No sustained oscillation (Note 3) 300 pF

L

= 2V

MUTE bit = 1, V

SHDN bit = 1, V

(Note 3) -80 dB

RMS

IN

= 2V

(Note 3) -80 dB

RMS

(Note 3) -80 dB

RMS

LEVEL SENSE/CLIP DETECTION

Audio Presence Threshold V

Clip-Level Warning

V

TAP

TCP

TCN

Output referred 127 200 268 mV

Positive clip warning level 90

Negative clip warning level 10

DIAGNOSTIC I/O

D_[3:0]=0001 40

D_[3:0]=0010 97

D_[3:0]=0011 154

D_[3:0]=0100 210

D_[3:0]=0101 265

D_[3:0]=0110 320

Pullup Current Limit I

IDH

V

D_

= 1.5V

D_[3:0]=0111 375

D_[3:0]=1000 430

D_[3:0]=1001 485

D_[3:0]=1010 540

D_[3:0]=1011 595

D_[3:0]=1100 650

D_[3:0]=1101 705

Pulldown Current I

Trip High Threshold V

Trip Low Threshold V

Switch Diode V

Input Resistance R

IDL

IDH

IDL

DON

DOFF

D_[3:0] = 1110, V

R

= 1kI to 10kI

D_

R

= 1kI to 10kI

D_

< V

CM

D_[3:0] = 1111 0.7 V

Off-state D_[3:0] = 0000, V

D_

< V

CM

32 65

1.94 V

0.92 V

1

DD

0.1

FV

V/Fs

% V

MI

V

dB

RMS

DD

FA

�� Maxim Integrated Products 5

MAX13335E/MAX13336E

Dual Automotive Differential Audio Receivers

with I2C Control and Diagnostics

ELECTRICAL CHARACTERISTICS (continued)

(VDD = 5V, AV = -6dB, RL = 10kI, f = 20Hz to 20kHz, TA = TJ = -40NC to +105NC, unless otherwise noted. Typical values are at TA = 25NC under normal conditions, unless otherwise noted.) (Note 2)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Leakage Current I

DLKG

ESD PROTECTION

ISO 10605 Air Gap V

Contact Discharge V

ESD

DIGITAL INTERFACE

Input Voltage High V

Input Voltage Low V

Input Voltage Hysteresis V

I/O Leakage Current I

Output Low Voltage V

EN to Full Operation Time t

INH

INL

HYS

LKG

OL

SON

I2C TIMING

Output Fall Time t

OF

Pin Capacitance C

Clock Frequency f

SCL Low Time t

SCL High Time t

START Condition Hold Time t

START Condition Setup Time t

Data Hold Time t

Data Setup Time t

SCL

LOW

HIGH

HD:STA

SU:STA

HD:DAT

SU:DAT

Input Rise Time t

Input Fall Time t

STOP Condition Setup Time t

Bus Free Time t

Maximum Bus Capacitance C

SU:STO

BUF

BUS

Note 2: Specifications within minimum and maximum limits are 100% production tested at TA = +25NC and are guaranteed over

the operating temperature range by design and characterization. Actual typical values may vary and are not guaranteed.

Note 3: Guaranteed by bench characterization. Note 4: A

CMRR

= 20log(δV

IOS

/δVCM).

Off-state D_[3:0] = 0000, V

D_

< V

CM

Q10 FA

2kI/150pF, INL_, INR_ Q15

330I/330pF, INL_, INR_ Q8

SDA, SCL

0.7 x V

DD

SDA, SCL

0.14 x V

DD

Q10 FA

100 ms

IN

SDA, SCL

SDA, SCL, INT SDA, INT, I

C

= 2.2FF (Note 3)

REF

C

= 10pF to 400pF 250 ns

BUS

SINK

= 3mA

1.3

0.6

Repeated START condition 0.6

0 900 ns

100 ns

SCL, SDA 300 ns

R

SCL, SDA 300 ns

F

0.6

Between START and STOP conditions 1.3

Per bus line 400 pF

kV

0.3 x V

DD

mV

0.4 V

10 pF

400 kHz

V

Fs

�� Maxim Integrated Products 6

MAX13335E/MAX13336E

Dual Automotive Differential Audio Receivers

with I2C Control and Diagnostics

Typical Operating Characteristics

(VDD = 5V, AV = -6dB, R

0.1

0.01

THD+N (%)

0.001

0.0001

0.01 100

10

1

0.1

THD+N (%)

0.01

= 10kI, BW = 20Hz to 20kHz, T

L

THD+N vs. FREQUENCY

V

= 2V

IN_

RMS

MAX13336E

MAX13335E

1010.1

FREQUENCY (kHz)

THD+N vs. OUTPUT VOLTAGE

MAX13335E

= 5V

V

DD

= -18dB

A

V

f = 6kHz

= +25NC, unless otherwise noted.)

A

THD+N vs. OUTPUT VOLTAGE

10

MAX13336E

= 5V

V

DD

= -22dB

A

V

MAX13335E toc01

1

0.1

THD+N (%)

0.01

0.001

0.0001 0 0.5

THD+N vs. OUTPUT VOLTAGE

10

MAX13336E

= 5V

V

DD

AV = -6dB

MAX13335E toc03

1

0.1

THD+N (%)

0.01

OUTPUT VOLTAGE (V

f = 6kHz

f = 100Hz, 1kHz

0.40.30.20.1

)

RMS

MAX13335E toc02

MAX13335E toc04

0.001

f = 100Hz AND 1kHz

0.0001 0 0.5

OUTPUT VOLTAGE (V

THD+N vs. OUTPUT VOLTAGE

10

MAX13335E

1

0.1

THD+N (%)

0.01

0.001

0.0001 0 2.0

f = 6kHz

f = 100Hz

OUTPUT VOLTAGE (V

RMS

f = 1kHz

1.51.00.5

RMS

0.40.30.20.1

)

MAX13335E toc05

)

0.001

f = 100Hz AND 1kHz

0.0001 0 2.4

OUTPUT VOLTAGE (V

THD+N vs. OUTPUT VOLTAGE

10

MAX13336E

= 5V

V

DD

= 8dB

A

V

1

0.1

THD+N (%)

0.01

0.001

0.0001 0 2.4

OUTPUT VOLTAGE (V

f = 6kHz

f = 100Hz, 1kHz

RMS

2.01.61.20.80.4

)

MAX13335E toc06

2.01.61.20.80.4

)

�� Maxim Integrated Products 7

MAX13335E/MAX13336E

Dual Automotive Differential Audio Receivers

with I2C Control and Diagnostics

Typical Operating Characteristics (continued)

(VDD = 5V, AV = -6dB, R

0.1

THD+N (%)

0.01

0.001

0.0001

-80

-90

-100

-110

-120

CMRR (dB)

-130

-140

-150

= 10kI, BW = 20Hz to 20kHz, T

L

THD+N vs. OUTPUT VOLTAGE

10

MAX13335E

= 5V

V

DD

= +12dB

A

V

1

f = 6kHz

f = 100Hz AND 1kHz

RMS

1.51.00.5 )

0 2.0

OUTPUT VOLTAGE (V

CROSSTALK vs. FREQUENCY

V

= 2V

IN_

RMS

OUTR TO OUTL

OUTL TO OUTR

0.01 100 FREQUENCY (kHz)

1010.1

= +25NC, unless otherwise noted.)

A

POWER-SUPPLY REJECTION RATIO

vs. FREQUENCY

-60

V

= 200mV

RIPPLE

MAX13335E toc07

-70

-80

-90

PSRR (dB)

-100

-110

-120

0.01 100

GAIN MATCHING vs. FREQUENCY

-5.80

V

= 2V

IN_

-5.85

MAX13335E toc09

-5.90

-5.95

-6.00

-6.05

GAIN (dB)

-6.10

-6.15

-6.20

-6.25

-6.30

0.01 100

RMS

P-P

MAX13335E toc08

OUTR

OUTL

1010.1

FREQUENCY (kHz)

MAX13335E toc10

OUTR

OUTL

1010.1

FREQUENCY (kHz)

SUPPLY CURRENT vs. TEMPERATURE

12.0

11.8

11.6

11.4

11.2

11.0

10.80

SUPPLY CURRENT (mA)

10.60

10.40

10.20

-50 125 TEMPERATURE (°C)

VDD = 5V

VDD = 3.3V

MAX13335E toc11

1007525 500-25

SHUTDOWN CURRENT vs. TEMPERATURE

8

VDD = V

= V

SCL

7

6

5

4

3

SHUTDOWN CURRENT (µA)

2

1

0

-50 125

SDA

VDD = 5V

VDD = 3.3V

TEMPERATURE (°C)

MAX13335E toc12

10075-25 0 25 50

�� Maxim Integrated Products 8

MAX13335E/MAX13336E

01

Dual Automotive Differential Audio Receivers

with I2C Control and Diagnostics

Typical Operating Characteristics (continued)

(VDD = 5V, AV = -6dB, R

0

-10

-20

-30

-40

-50

-60

CMRR (dB)

-70

-80

-90

-100

-110

-120

0.01 100

0

-20

-40

-60

-80

= 10kI, BW = 20Hz to 20kHz, T

L

COMMON-MODE REJECTION RATIO

vs. FREQUENCY

MAX13336E

= 2V

V

IN_

RMS

LEFT CHANNEL

RIGHT CHANNEL

1010.1

FREQUENCY (kHz)

MUTE ATTENUATION vs. FREQUENCY

V

= 2V

IN_

RMS

MUTE = 1

= +25NC, unless otherwise noted.)

A

DIAGNOSTIC CURRENT SOURCE vs. D_[3:0]

1000

VDD = 5V

900

= 1.5V

V

D_

(µA)

D_

I

800

700

600

500

400

300

200

100

0

MAX13335E toc13

SHUTDOWN ATTENUATION vs. FREQUENCY

0

V

= 2V

IN_

SHDN = 1

MAX13335E toc15

-20

-40

-60

-80

RMS

D_[3:0] (dec)

MAX13335E toc14

131210 113 4 5 6 7 8 91 2

4

MAX13335E toc16

-100

MUTE ATTENUATION (dB)

-120

-140

0.01 100 FREQUENCY (kHz)

1010.1

OUTPUT NOISE vs. GAIN SETTING

40

MAX13336E

35

)

30

RMS

25

20

15

OUTPUT NOISE (µV

10

5

0

NONWEIGHTED

G_[3:0] (dec)

A-WEIGHTED

105

5

�� Maxim Integrated Products 9

MAX13335E toc17

-100

SHUTDOWN ATTENUATION (dB)

-120

-140

0.01 100 FREQUENCY (kHz)

OUTPUT NOISE vs. GAIN SETTING

40

MAX13335E

35

)

30

RMS

25

20

15

OUTPUT NOISE (µV

10

5

0

NONWEIGHTED

A-WEIGHTED

105

G_[3:0] (dec)

1010.1

MAX13335E toc18

5