EVALUATION KIT AVAILABLE
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.
Benefits and Features
●● +3.3V or +5V Operation
●● +28V to -16V Tolerant Inputs
●● Wide Common-Mode Input Range (-5V to +11.5V)
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.
●● Fully Differential Inputs Up to 7VRMS
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-to-ground,
open load, and shorts between channels.
●● I2C Control Interface
The audio inputs are protected against ISO 10605 ±15kV
Air Gap and ±8kV Contact Discharge ESD pulses. Both
devices have a -40°C to +105°C operating temperature
range, and are available in a 16-pin QSOP package.
●● Quasi-Differential Inputs Up to 3.5VRMS
●● Audio Presence Detection
●● Jack Sense Detection
●● Diagnostic Capability
●● Programmable Gain with Zero-Crossing Detection
●● Automotive Grade ESD Protection
• ISO 10605 ±15kV Air Gap
• ±8kV Contact Discharge
Applications
●●
●●
●●
●●
Radio Head Units
RSA/RSE
Connectivity Modules
Automotive Telematics
Ordering Information appears at end of data sheet.
Typical Application Circuits
MAX13335E/MAX13336E
MAX13325
MAX13326
I 2C
AND
CONTROL
DIAGNOSTICS
PGA
PGA
Typical Application Circuits continued at end of data sheet.
19-6168; Rev 2; 9/17
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
Continuous Power Dissipation (TA = +70°C)
QSOP (derate 9.6 mW/°C above +70°C).................771.5 mW
Operating Junction Temperature Range.......... -40°C to +150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Soldering Temperature (reflow).......................................+260°C
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(θJA).......103.7°C/W
Junction-to-Case Thermal Resistance (θJC)................37°C/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.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(VDD = 5V, AV = -6dB, RL = 10kΩ, f = 20Hz to 20kHz, TA = TJ = -40°C to +105°C, unless otherwise noted. Typical values are at
TA = 25°C under normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
VREF = 1.68V
-5%
3.3
+5%
VREF = 2.5V
-5%
5.0
+5%
UNITS
GENERAL
Supply-Voltage Range
VDD
Quiescent Supply Current
IDD
Shutdown Supply Current
ISHDN
VINL_ = VINR_ = VDD/2
11
SHDN bit = 1
V
mA
6
10
VDD = 3.3V
-4%
1.68
+4%
VDD = 5V
-3%
2.5
+3%
µA
REF Output Voltage
VREF
Thermal Shutdown
TSHDN
(Note 3)
+150
°C
THYS
(Note 3)
15
°C
Thermal Shutdown Hysteresis
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V
Maxim Integrated │ 2
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Electrical Characteristics (continued)
(VDD = 5V, AV = -6dB, RL = 10kΩ, f = 20Hz to 20kHz, TA = TJ = -40°C to +105°C, unless otherwise noted. Typical values are at
TA = 25°C under normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
AMPLIFIERS
G_[3:0] = 0000
-14
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
G_[3:0] =1000
Programmable Gain Amp
AV
MAX13335E
0
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
-22
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
G_[3:0] =1000
MAX13336E
dB
-8
-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
Gain Error
AERR
Within VCM operating range
±0.4
dB
Gain Matching
AMCH
Within VCM operating range
±0.4
dB
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Maxim Integrated │ 3
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Electrical Characteristics (continued)
(VDD = 5V, AV = -6dB, RL = 10kΩ, f = 20Hz to 20kHz, TA = TJ = -40°C to +105°C, unless otherwise noted. Typical values are at
TA = 25°C under normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
Input Offset Voltage
SYMBOL
VIOS
CONDITIONS
AV = 0dB
Differential
Input Impedance
RIN
Single-ended
Within VCM range,
f = DC, AV = -2dB
(Note 4)
Common-Mode Rejection Ratio
ACMRR
VCM = 2VRMS,
f = 20Hz to 20kHz
(Note 3)
Within VCM range,
f = DC, AV = -10dB
(Note 4)
VCM = 2VRMS,
f = 20Hz to 20kHz
(Note 3)
Power-Supply Rejection Ratio
APSRR
MIN
Input Voltage Range
VIN
13.5
22
33
19
30
42
MAX13335E
8.5
14
21
MAX13336E
11
17
24
60
80
60
dB
65
MAX13336E
65
-80
dB
1.3
2
MAX13335E
2.6
2.3
VDD = 5V
VDD = 3.3V
VDD = 5V
VRMS
3.5
MAX13336E
4.6
Differential source,
VDD = 5V
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85
Quasi-differential
source, VDD = 3.3V
VDD = 3.3V
kΩ
MAX13335E
4.0
Differential source,
VDD = 3.3V
VCM
mV
Differential source,
VDD = 5V
Quasi-differential
source, VDD = 5V
Input Common-Mode Voltage
Range
UNITS
+10
MAX13336E
Quasi-differential
source, VDD = 3.3V
Differential source,
VDD = 3.3V
MAX
MAX13335E
f = 1kHz, VRIPPLE = 200mVP-P (Note 3)
Quasi-differential
source, VDD = 5V
TYP
-10
7.0
MAX13335E
MAX13336E
-1.2
4.6
-1.8
7.0
-3.3
7.6
-5.0
11.5
V
Maxim Integrated │ 4
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Electrical Characteristics (continued)
(VDD = 5V, AV = -6dB, RL = 10kΩ, f = 20Hz to 20kHz, TA = TJ = -40°C to +105°C, unless otherwise noted. Typical values are at
TA = 25°C under normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
Output Voltage Range
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
SYMBOL
VOUT
THD+N
SNR
CONDITIONS
RL = 10kΩ
MIN
TYP
0.1
f = 1kHz, VOUT_ = 1.4VRMS (Note 3)
MAX
UNITS
VDD - 0.1
V
0.01
VOUT_= 1.4VRMS
(Note 3)
MAX13335E
104.8
MAX13336E
99.4
MAX13335E
8
MAX13336E
15
%
dB
Output Noise
VN
AV = 0dB, unweighted
(Note 3)
Slew Rate
SR
CL = 300pF (Note 3)
Maximum Capacitive Load
CL
No sustained oscillation (Note 3)
300
pF
AXTALK
VIN = 2VRMS (Note 3)
-80
dB
Mute Attenuation
AMUTE
MUTE bit = 1, VIN = 2VRMS (Note 3)
-80
dB
Shutdown Attenuation
ASHDN
SHDN bit = 1, VIN = 2VRMS (Note 3)
-80
dB
Crosstalk
µVRMS
0.5
V/µs
LEVEL SENSE/CLIP DETECTION
Audio Presence Threshold
Clip-Level Warning
VTAP
Output referred
127
200
VTCP
Positive clip warning level
90
VTCN
Negative clip warning level
10
268
mVRMS
% VDD
DIAGNOSTIC I/O
Pullup Current Limit
IIDH
VD_ = 1.5V,
CTRL0.DGAIN = 0
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
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
IIDL
D_[3:0] = 1110, VD_ < VCM
Trip High Threshold
VIDH
RD_ = 1kΩ to 10kΩ
1.94
V
VIDL
Trip Low Threshold
32
µA
65
µA
RD_ = 1kΩ to 10kΩ
0.92
V
Switch Diode
VDON
D_[3:0] = 1111
0.7
V
Input Resistance
RDOFF
Off-state D_[3:0] = 0000, VD_ < VCM
Leakage Current
IDLKG
Off-state D_[3:0] = 0000, VD_ < VCM
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1
MΩ
±10
µA
Maxim Integrated │ 5
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Electrical Characteristics (continued)
(VDD = 5V, AV = -6dB, RL = 10kΩ, f = 20Hz to 20kHz, TA = TJ = -40°C to +105°C, unless otherwise noted. Typical values are at
TA = 25°C under normal conditions, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ESD PROTECTION
ISO 10605 Air Gap
VESD
2kΩ/150pF, INL_, INR_
±15
kV
Contact Discharge
VESD
330Ω/330pF, INL_, INR_
±8
kV
Input Voltage High
VINH
SDA, SCL
Input Voltage Low
VINL
SDA, SCL
Input Voltage Hysteresis
VHYS
SDA, SCL
I/O Leakage Current
ILKG
SDA, SCL, INT
Output Low Voltage
VOL
SDA, INT, ISINK = 3mA
EN to Full Operation Time
tSON
CREF = 2.2µF (Note 3)
Output Fall Time
tOF
CBUS = 10pF to 400pF
Pin Capacitance
CIN
DIGITAL INTERFACE
0.7 x
VDD
V
0.3 x
VDD
V
0.14 x
VDD
mV
±10
µA
0.4
100
V
ms
I2C TIMING
Clock Frequency
fSCL
SCL Low Time
tLOW
SCL High Time
ns
10
pF
400
kHz
1.3
µs
0.6
µs
START Condition Hold Time
tHD:STA
Repeated START condition
0.6
µs
START Condition Setup Time
tSU:STA
Repeated START condition
0.6
µs
Data Hold Time
tHD:DAT
0
Data Setup Time
tSU:DAT
100
Input Rise Time
tR
SCL, SDA
300
ns
Input Fall Time
tF
SCL, SDA
300
ns
STOP Condition Setup Time
tHIGH
250
tSU:STO
900
ns
0.6
Bus Free Time
tBUF
Between START and STOP conditions
Maximum Bus Capacitance
CBUS
Per bus line
ns
µs
1.3
µs
400
pF
Note 2: Specifications within minimum and maximum limits are 100% production tested at TA = +25°C 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: ACMRR = 20log(∆VIOS/∆VCM).
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Maxim Integrated │ 6
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Typical Operating Characteristics
(VDD = 5V, AV = -6dB, RL = 10kΩ, BW = 20Hz to 20kHz, TA = +25°C, unless otherwise noted.)
MAX13335E toc01
MAX13336E
1
0.001
MAX13335E
0.0001
0.01
0.1
1
MAX13336E
VDD = 5V
AV = -22dB
0.1
f = 6kHz
0.01
0.001
10
100
0.0001
f = 100Hz, 1kHz
0
0.1
THD+N vs. OUTPUT VOLTAGE
MAX13335E
VDD = 5V
AV = -18dB
0.1
f = 6kHz
0.01
0.001
f = 6kHz
0.01
0.001
0.1
0.2
0.3
0.4
0.5
0
0.4
THD+N vs. OUTPUT VOLTAGE
MAX13335E
0.1
f = 6kHz
0.01
f = 1kHz
0.001
f = 100Hz
0.5
1.0
1.5
OUTPUT VOLTAGE (VRMS)
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2.0
2.4
0.1
f = 6kHz
0.01
0.001
0
1.6
MAX13336E
VDD = 5V
AV = 8dB
1
THD+N (%)
THD+N (%)
1
1.2
THD+N vs. OUTPUT VOLTAGE
10
MAX13335E toc05
10
0.8
OUTPUT VOLTAGE (VRMS)
MAX13335E toc06
0
f = 100Hz AND 1kHz
0.0001
OUTPUT VOLTAGE (VRMS)
0.0001
0.5
0.1
f = 100Hz AND 1kHz
0.0001
0.4
MAX13336E
VDD = 5V
AV = -6dB
1
THD+N (%)
THD+N (%)
1
0.3
THD+N vs. OUTPUT VOLTAGE
10
MAX13335E toc03
10
0.2
OUTPUT VOLTAGE (VRMS)
FREQUENCY (kHz)
MAX13335E toc04
0.01
THD+N vs. OUTPUT VOLTAGE
10
THD+N (%)
THD+N (%)
VIN_ = 2VRMS
MAX13335E toc02
THD+N vs. FREQUENCY
0.1
2.0
0.0001
f = 100Hz, 1kHz
0
0.4
0.8
1.2
1.6
2.0
2.4
OUTPUT VOLTAGE (VRMS)
Maxim Integrated │ 7
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Typical Operating Characteristics (continued)
(VDD = 5V, AV = -6dB, RL = 10kΩ, BW = 20Hz to 20kHz, TA = +25°C, unless otherwise noted.)
MAX13335E
VDD = 5V
AV = +12dB
1
-60
MAX13335E toc08
MAX13335E toc07
10
VRIPPLE = 200mVP-P
-70
-80
0.1
PSRR (dB)
THD+N (%)
POWER-SUPPLY REJECTION RATIO
vs. FREQUENCY
THD+N vs. OUTPUT VOLTAGE
f = 6kHz
0.01
OUTR
-90
-100
0
0.5
1.0
-120
2.0
1.5
OUTPUT VOLTAGE (VRMS)
CROSSTALK vs. FREQUENCY
VIN_ = 2VRMS
-90
-5.80
-5.85
1
OUTR TO OUTL
VIN_ = 2VRMS
OUTR
-6.00
-6.05
-6.10
OUTL
-6.15
-130
-6.20
OUTL TO OUTR
-140
0.01
0.1
-6.25
1
-6.30
100
10
0.01
0.1
1
FREQUENCY (kHz)
SUPPLY CURRENT vs. TEMPERATURE
SHUTDOWN CURRENT vs. TEMPERATURE
11.6
VDD = 5V
11.2
11.0
10.80
VDD = 3.3V
10.60
VDD = VSCL = VSDA
7
6
VDD = 5V
5
4
3
VDD = 3.3V
2
1
10.40
10.20
8
SHUTDOWN CURRENT (µA)
SUPPLY CURRENT (mA)
11.8
11.4
100
10
FREQUENCY (kHz)
MAX13335E toc11
12.0
100
10
GAIN MATCHING vs. FREQUENCY
-5.95
-110
-150
0.1
-5.90
GAIN (dB)
CMRR (dB)
-100
-120
0.01
FREQUENCY (kHz)
MAX13335E toc09
-80
OUTL
-110
MAX13335E toc12
0.0001
f = 100Hz AND 1kHz
MAX13335E toc10
0.001
-50
-25
0
25
50
75
TEMPERATURE (°C)
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100
125
0
-50
-25
0
25
50
75
100
125
TEMPERATURE (°C)
Maxim Integrated │ 8
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Typical Operating Characteristics (continued)
(VDD = 5V, AV = -6dB, RL = 10kΩ, BW = 20Hz to 20kHz, TA = +25°C, unless otherwise noted.)
COMMON-MODE REJECTION RATIO
vs. FREQUENCY
-60
-70
800
700
LEFT CHANNEL
600
500
400
300
-80
-90
-100
RIGHT CHANNEL
200
100
0
0.1
1
10
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
100
D_[3:0] (dec)
FREQUENCY (kHz)
MUTE ATTENUATION vs. FREQUENCY
MUTE ATTENUATION (dB)
-40
-60
-80
-100
-120
-140
0.01
0.1
1
10
100
0
SHUTDOWN ATTENUATION (dB)
VIN_ = 2VRMS
MUTE = 1
-20
SHUTDOWN ATTENUATION vs. FREQUENCY
MAX13335E toc15
0
VIN_ = 2VRMS
SHDN = 1
-20
-40
-60
-80
-100
-120
-140
0.01
FREQUENCY (kHz)
30
25
20
NONWEIGHTED
15
10
A-WEIGHTED
5
0
0
5
10
G_[3:0] (dec)
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1
100
10
15
OUTPUT NOISE vs. GAIN SETTING
40
MAX13335E
35
OUTPUT NOISE (µVRMS)
OUTPUT NOISE (µVRMS)
MAX13335E toc17
MAX13336E
35
0.1
FREQUENCY (kHz)
OUTPUT NOISE vs. GAIN SETTING
40
MAX13335E toc16
0.01
MAX13335E toc18
-110
-120
VDD = 5V
VD_ = 1.5V
900
ID_ (µA)
-40
-50
MAX13335E toc14
MAX13336E
VIN_ = 2VRMS
-20
-30
CMRR (dB)
DIAGNOSTIC CURRENT SOURCE vs. D_[3:0]
1000
MAX13335E toc13
0
-10
30
25
20
NONWEIGHTED
15
10
A-WEIGHTED
5
0
0
5
10
15
G_[3:0] (dec)
Maxim Integrated │ 9
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Pin Configuration
TOP VIEW
D0
1
D1
2
INL+
3
INL-
4
+
16 REF
15 VDD
14 OUTL
MAX13335E
MAX13336E
13 GND
INR-
5
12 OUTR
INR+
6
11 INT
D2
7
10 SDA
D3
8
9 SCL
QSOP
Pin Description
PIN
NAME
FUNCTION
1
D0
Diagnostic I/O 0. I/O pin used for jack sense and diagnostics.
2
D1
Diagnostic I/O 1. I/O pin used for jack sense and diagnostics.
3
INL+
Noninverting Left-Channel Audio Input
4
INL-
Inverting Left-Channel Audio Input
5
INR-
Inverting Right-Channel Audio Input
6
INR+
Noninverting Right-Channel Audio Input
7
D2
Diagnostic I/O 2. I/O pin used for diagnostics.
8
D3
Diagnostic I/O 3. I/O pin used for diagnostics.
9
SCL
I2C Serial-Clock Input
10
SDA
I2C Serial-Data Input and Output
Active-Low, Open-Drain Interrupt Request Output
11
INT
12
OUTR
13
GND
Ground
14
OUTL
Left-Channel Audio Output
15
VDD
Supply Input
16
REF
VDD/2 Reference Output. Bypass REF to GND with a 2.2µF capacitor.
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Right-Channel Audio Output
Maxim Integrated │ 10
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Detailed Description
Thermal Shutdown
The MAX13335E/MAX13336E are designed to operate
with the MAX13325/MAX13326 dual automotive audio
line drivers to form a complete differential audio link
in automotive systems. In addition, the MAX13335E/
MAX13336E can operate as an auxiliary input audio
amplifier with jack sense function.
Thermal shutdown protects the device when the junction
temperature exceeds +150°C (typ). The device resumes
operation when the junction temperature drops below the
thermal shutdown hysteresis of 15°C (typ). The internal
status register latches the status change of the TSD bit
until an I2C read is performed.
Diagnostics
Signal Path
The devices can be configured to operate with quasidifferential (up to 3.5VRMS) and fully differential (up to
7VRMS) input signals. Both input channels feature high
80dB CMRR (typ). An integrated programmable gain
amplifier with zero-crossing detection controlled through
the I2C interface provides adjustable gain from -14dB to
+16dB (MAX13335E) or -22dB to +8dB (MAX13336E) in
+2dB increments. Zero-crossing detection can be enabled
to limit the zip noise during a gain transition by delaying
the gain change until a zero-crossing event occurs on the
input signal.
The devices feature four similar diagnostic I/O ports.
When configured correctly, they are capable of performing
jack sense detection, short-to-ground, short-to-battery,
open-load, and shorts between channels. Each diagnostic
I/O port contains a programmable current source, a voltage sense, and a diode to ground.
Interrupt Output
The procedure usually starts with stepping up the current
source from the minimum to maximum range.
The devices can monitor the inputs for the presence of
audio, clip detection, and change-of-state in the jack
sense. An active-low, open-drain interrupt request output
can be configured through the I2C interface to report the
presence of audio, clip detection, and change-of-state in
the jack sense. The internal status register also latches
the status change of those parameters until an I2C read
is performed.
40µA TO
705µA
D_
RD_
VIDH
DH_
DL_
VIDL
Figure 1. Diagnostic I/O Port
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I2C INTERFACE
The principle behind the diagnosis is simply forcing a
current into the load attached to the I/O port and sensing
the voltage to check if it is greater or smaller than the
two predefined low/high thresholds. These can be easily
accessed by a microcontroller through the I2C interface.
1) If the sensed voltage is consistently below the low
threshold, a short-to-ground event is determined.
2) However, if the sensed voltage is consistently above
the high threshold, there is a possibility of either a
short-to-battery or an open-load event. In order to differentiate between them, the I/O port should be tested
again with a voltage-sense-only configuration (i.e.,
with the current source switched off). If the sensed
voltage remains above the high threshold, a short-tobattery event has occurred. Otherwise, an open-load
event is detected.
3) In some current source range, if the sensed voltage is
between the high and low thresholds, this could indicate that the load is present.
A valid readout of the status might require some amount
of delays (to be inserted by the microcontroller) due to
the settling time needed to charge/discharge any external
capacitive load on the I/O port.
The diode is useful in the case of sensing an unconnected
load or short between channels. Here, one end of the load
can be forced to ground by the diode and the usual procedure described above can be applied to detect various
events. It is, however, advisable to test the I/O port for a
short-to-battery condition prior to turning on the diode as
it could risk damaging the device.
Maxim Integrated │ 11
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
See the Applications Information section for various
examples on how the diagnostic can be set up to detect
different events.
is high are read as control signals (see the START and
STOP Conditions section). When the serial interface is
inactive, SDA and SCL idle high.
Applications Information
START and STOP Conditions
Serial Interface
Writing to the device using I2C requires that first the master send a START condition (S) followed by the device’s
I2C address. After the address, the master sends the
address of the register that is to be programmed. The
master then ends communication by issuing a STOP condition (P) to relinquish control of the bus, or a repeated
START condition (Sr) to communicate to another I2C
slave (Figure 2).
Bit Transfer
Each SCL rising edge transfers one data bit. The data
on SDA must remain stable during the high portion of the
SCL clock pulse (Figure 3). Changes in SDA while SCL
A master device initiates communication by issuing a
START condition (S) which is a high-to-low transition on
SDA with SCL high. A START condition from the master
signals the beginning of a transmission to the device. The
master terminates transmission by a STOP condition (P)
(see the Acknowledge Bit section). A STOP condition is a
low-to-high transition on SDA while SCL is high (Figure 4).
The STOP condition frees the bus. If a repeated START
condition (Sr) is generated instead of a STOP condition,
the bus remains active. When a STOP condition or incorrect slave ID is detected, the device internally disconnects
SCL from the serial interface until the next START or
repeated START condition, minimizing digital noise and
feedthrough.
SDA
tF
tLOW
tSU:DAT
tR
tHD:STA
tF
tSP
tR
tBUF
SCL
tHD:STA
S
tHD:DAT
tHIGH
tSU:STA
tSU:STO
Sr
P
S
Figure 2. I2C Timing
START
CONDITION
SDA
STOP
CONDITION
SDA
SCL
DATA LINE
STABLE;
DATA VALID
Figure 3. Bit Transfer
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CHANGE OF
DATA ALLOWED
SCL
Figure 4. START/STOP Conditions
Maxim Integrated │ 12
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Acknowledge Bit
reads the final byte of data from the device, followed by a
STOP condition.
The acknowledge bit (ACK) is a clocked 9th bit that the
device uses to handshake the receipt of each byte of data
when in write mode. The device pulls down SDA during
the entire master-generated 9th clock pulse if the previous byte is successfully received (Figure 5). Monitoring
ACK allows for detection of unsuccessful data transfers.
An unsuccessful data transfer occurs if a receiving device
is busy or if a system fault has occurred. In the event of
an unsuccessful data transfer, the bus master could retry
communication. The master must pull down SDA during
the 9th clock cycle to acknowledge receipt of data when
the device is in read mode. An acknowledge must be sent
by the master after each read byte to allow data transfer
to continue. A not-acknowledge is sent when the master
Slave Address
The device is programmable to one of the four I2C
slave addresses (Table 2). The power-on default I2C
slave address of the device for read/write is 0xD0/0xD1
(1101000R/W). The I2C slave address of the device can
be selected by writing to Control Register 1 (0x03) while
INT is pulled low externally during the I2C write duration
(Figure 6).
Single Byte-Write Operation
For a single byte-write operation, send the slave address
as the first byte followed by the register address and then
a single data byte (Figure 7).
NOT ACKNOWLEDGE
S
SDA
ACKNOWLEDGE
1
SCL
8
9
Figure 5. Acknowledge and Not-Acknowledge Bits
CURRENT I2C ADDRESS
SDA
1
1
0
1
0
PROGRAM I2C ADDRESS
CONTROL REGISTER 1 (0x03)
I2C1 I2C0
0
ACK
0
0
0
0
0
S1
R/W ACK
=0
0
1
1
ACK
0
0
0
0
0
0
I2C1 I2C0 ACK
SCL
INT
Figure 6. I2C Slave Address Programming
S
S7
S6
S5
S4
S3
S2
SLAVE ADDRESS
B7
B6
B5
B4
B3
B2
C7
C6
C5
C4
C3
C2
C1
C0
ACK
REGISTER ADDRESS
B1
B0
ACK
P
DATA 1
Figure 7. A Single Byte-Write Operation
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Maxim Integrated │ 13
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Burst-Write Operation
by the slave address with the read bit set. After the slave
sends the data byte, send a not-acknowledge followed by
a STOP condition (Figure 9).
For a burst-write operation, send the slave address as the
first byte followed by the register address and then the
data bytes (Figure 8).
Burst-Read Operation
Single Byte-Read Operation
For a burst-read operation, send the slave address with
a write as the first byte followed by the register address.
Then send a repeated START condition followed by the
slave address with the read bit set. The slave sends data
bytes until a not-acknowledge condition is sent (Figure 10).
For a single byte-read operation, send the slave address
with a write as the first byte followed by the register
address. Then send a repeated START condition followed
S
S7
S6
S5
S4
S3
S2
R/W ACK
=0
S1
R7
R6
R5
SLAVE ADDRESS
B7
B6
B5
B4
B3
R4
R3
R2
R1
R0
ACK
B2
B1
B0
ACK
B2
B1
B0
ACK
B2
B1
B0
ACK
B1
B0 NACK
REGISTER ADDRESS
B2
B1
B0
ACK
B7
B6
B5
B4
DATA 1
B3
DATA 2
ACK
B7
B6
B5
B4
B3
P
DATA N
Figure 8. A Burst-Write Operation
S
S7
S6
S5
S4
S3
S2
R/W ACK
=0
S1
B7
B6
B5
SLAVE ADDRESS
Sr
S7
S6
S5
S4
B4
B3
REGISTER ADDRESS
S3
S2
R/W ACK
=1
S1
B7
B6
B5
B4
SLAVE ADDRESS
B3
B2
P
DATA
NOTE: SHADED ITEM IS FROM THE MASTER.
Figure 9. A Single Byte-Read Operation
S
S7
S6
S5
S4
S3
S2
S1
R/W ACK
=0
B7
B6
SLAVE ADDRESS
Sr
S7
S6
S5
S4
S3
B5
B4
B3
B2
B1
B0
ACK
B2
B1
B0
ACK
B1
B0 NACK
REGISTER ADDRESS
S2
S1
R/W ACK
=1
B7
B6
B5
SLAVE ADDRESS
B3
DATA 1
ACK
NOTE: SHADED ITEMS ARE FROM THE MASTER.
B4
B7
B6
B5
B4
B3
B2
P
DATA N
Figure 10. A Burst-Read Operation
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Maxim Integrated │ 14
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Register Map
NAME
REG
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
R/W
POR SETTINGS
STAT0
00
DH3
DL3
DH2
DL2
DH1
DL1
DH0
DL0
R
0x00
STAT1
01
APD
CLD
JSD
TSD
—
ID2
ID1
ID0
R
0x00
CTRL0
02
API
CLI
JSI
—
—
ZEN
MUTE
SHDN
R/W
0x00
CTRL1
03
—
—
—
—
—
—
I2C1
I2C0
R/W
0x00
DIAG0
04
D1[3]
D1[2]
D1[1]
D1[0]
D0[3]
D0[2]
D0[1]
D0[0]
R/W
0x00
DIAG1
05
D3[3]
D3[2]
D3[1]
D3[0]
D2[3]
D2[2]
D2[1]
D2[0]
R/W
0x00
GAIN
06
GL3
GL2
GL1
GL0
GR3
GR2
GR1
GR0
R/W
0x00
Status Register 0 (STAT0)
ADDRESS: 0x00
MODE: R
BIT
7
6
5
4
3
2
1
0
NAME
DH3
DL3
DH2
DL2
DH1
DL1
DH0
DL0
POR
0
0
0
0
0
0
0
0
The bits in Status Register 0 are updated to reflect the states of the upper (DH_) and lower (DL_) comparator’s threshold
when voltage sensing is enabled for the corresponding diagnostic I/O. Combinations of DH_ and DL_ can be used to
decode the fault on the I/O port.
Bits 7, 5, 3, 1: DH_ (Diagnostic Upper Comparator Threshold VIDH)
0 = Below upper threshold
1 = Above upper threshold
Bits 6, 4, 2, 0: DL_ (Diagnostic Lower Comparator Threshold VIDL)
0 = Below lower threshold
1 = Above lower threshold
Table 1. Interpretation of Diagnostic Status Bits
DH_
DL_
0
0
Short-to-ground (or disabled)
0
1
No fault
1
0
Invalid (not used)
1
1
Short-to-battery if current source is disabled (i.e., D_[3:0] = 1110)
1
1
Open-load if current source is enabled (i.e., D_[3:0] = 0001 to 1101)
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CONDITION
Maxim Integrated │ 15
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Status Register 1 (STAT1)
ADDRESS: 0x01
MODE: R
BIT
7
6
5
4
3
2
1
0
NAME
APD
CLD
JSD
TSD
—
ID2
ID1
ID0
POR
0
0
0
0
0
—
—
—
Bit 7: APD (Audio Presence Status Bit)
0 = Audio not present.
1 = Audio presence detected. INT asserts low.
Bit 6: CLD (Clip Detection Status Bit)
0 = No clipping detected.
1 = Clip warning. INT asserts low.
Bit 5: JSD (Jack Sense Status Bit)
0 = Jack removed. INT asserts low.
1 = Jack inserted. INT asserts low.
Note: INT asserts low whenever jack sense changes state.
Bit 4: TSD (Thermal Shutdown Status Bit)
0 = Within safe operating range.
1 = Overheating detected. INT pin asserts low.
Bit 3: No Function
Bit 2 to 0: ID_ (Die ID)
001 = MAX13335E
010 = MAX13336E
Note: Reading of Status Register 1 (REG = 0x01) releases INT and resets bits APD, CLD, JSD, and TSD back to zero.
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Maxim Integrated │ 16
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Control Register 0 (CTRL0)
ADDRESS: 0x02
MODE: R/W
BIT
7
6
5
4
3
2
1
0
NAME
API
CLI
JSI
—
—
ZEN
MUTE
SHDN
POR
0
0
0
0
0
0
0
0
Bit 7: API (Audio Presence Interrupt Enable Bit)
0 = Disable
1 = Enable*
*Bit automatically resets to 0 when an audio presence interrupt occurs.
Bit 6: CLI (Clip Warning Interrupt Enable Bit)
0 = Disable
1 = Enable*
*Bit automatically resets to 0 when a clip warning interrupt occurs.
Bit 5: JSI (Jack Sense Interrupt Enable Bit)
The JSI bit can be set only after D1[3:0] and D0[3:0] in Diagnostic register 0 (DIAG0) has been programmed.
0 = Disable
1 = Enable*
*Bit automatically resets to 0 when a jack sense interrupt occurs.
Bits 4: No Function (0 should be written during write access.)
Bit 3: DGAIN (Diagnostic Pullup Current Gain Bit)
0 = Normal
1 = 1.5x increase in diagnostic current
Bit 2: ZEN (Zero-Crossing Enable Bit)
Enabling zero-crossing detection loads the new PGA gain settings at the signal zero crossing to avoid zip noise.
0 = Disable
1 = Enable
Bit 1: MUTE (Mute Enable Bite)
0 = Play mode
1 = Mute mode
Bit 0 : SHDN (Shutdown Enable Bit)
0 = Normal mode
1 = Shutdown mode
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Maxim Integrated │ 17
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Control Register 1 (CTRL1)
ADDRESS: 0x03
MODE: R/W
BIT
7
6
5
4
3
2
1
0
NAME
—
—
—
—
—
—
I2C1
I2C0
POR
0
0
0
0
0
0
0
0
Table 2. I2C Address
A7
A6
A5
A4
A3
A2 (I2C1)
A1 (I2C0)
A0 (R/W)
READ
WRITE
1
1
0
1
0
0
0
—
0xD1
0xD0
1
1
0
1
0
0
1
—
0xD3
0xD2
1
1
0
1
0
1
0
—
0xD5
0xD4
1
1
0
1
0
1
1
—
0xD7
0xD6
Bits 7 to 2: No Function (0 should be written during write access.)
Bits 1 and 0: I2C_
The I2C1 and I2C0 bits determine the I2C slave address of the device. The I2C slave address is changed by writing to
CTRL1 while INT is pulled low (e.g., by an external microcontroller) for the duration of the I2C write cycle.
Diagnostic Register 0 (DIAG0)
ADDRESS: 0x04
MODE: R/W
BIT
7
6
5
4
3
2
1
0
NAME
D1[3]
D1[2]
D1[1]
D1[0]
D0[3]
D0[2]
D0[1]
D0[0]
POR
0
0
0
0
0
0
0
0
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Maxim Integrated │ 18
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Diagnostic Register 1 (DIAG1)
ADDRESS: 0x05
MODE: R/W
BIT
7
6
5
4
3
2
1
0
NAME
D3[3]
D3[2]
D3[1]
D3[0]
D2[3]
D2[2]
D2[1]
D2[0]
POR
0
0
0
0
0
0
0
0
The Diagnostic registers, DIAG0 and DIAG1, program the state of the four diagnostic I/O ports D_. The diagnostic ports
can be programmed to operate in one of the four states:
1) Setting D_[3:0] = 0000 disables the corresponding diagnostic I/O.
2) Setting D_[3:0] = 0001 to 1101 enables the internal current source (40µA to 705µA) and voltage sensing. The voltage sensing utilizes a window comparator with an upper threshold of 1.94V and a lower threshold of 0.92V (see the
Diagnostic Configurations section).
3) Setting D_[3:0] = 1110 enables voltage sensing only.
4) Setting D_[3:0] = 1111 enables the internal diode to ground.
Table 3. Diagnostic I/O Port States
D_[3:0]
FUNCTION
0000
Diagnostic output disabled.
0001
Enables the 40µA current source and voltage sense.
0010
Enables the 97µA current source and voltage sense.
0011
Enables the 154µA current source and voltage sense.
0100
Enables the 210µA current source and voltage sense.
0101
Enables the 265µA current source and voltage sense.
0110
Enables the 320µA current source and voltage sense.
0111
Enables the 375µA current source and voltage sense.
1000
Enables the 430µA current source and voltage sense.
1001
Enables the 485µA current source and voltage sense.
1010
Enables the 540µA current source and voltage sense.
1011
Enables the 595µA current source and voltage sense.
1100
Enables the 650µA current source and voltage sense.
1101
Enables the 705µA current source and voltage sense.
1110
Enable voltage sense. The current source is disabled.
1111
Enables the diode. The current source and voltage sense are disabled.
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Maxim Integrated │ 19
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Gain Register (GAIN)
ADDRESS: 0x06
MODE: R/W
BIT
7
6
5
4
3
2
1
0
NAME
GL3
GL2
GL1
GL0
GR3
GR2
GR1
GR0
POR
0
0
0
0
0
0
0
0
Bits 7 to 0: G_
The Gain register sets the gain of the internal programmable gain amplifier (AV) for the left (GL[3:0]) and right (GR[3:0])
channels. The gain of the programmable gain amplifier (AV) is determined by the following transfer function:
Gain(AV) = -14dB + (G_[3:0] x 2)dB (for MAX13335E)
Gain(AV) = -22dB + (G_[3:0] x 2)dB (for MAX13336E)
Diagnostic Configurations
The device’s diagnostics can be configured for local jack
sense, remote jack sense, and differential drive connections (see the Typical Application Circuits). Diagnostic
registers DIAG0 and DIAG1 configure the diagnostic I/O
ports D_ as a current-source output with voltage sensing enabled, a voltage sensing input, or a diode to GND.
When voltage sensing is enabled, the current states of
the internal window comparator are updated to status
register STAT0. A valid readout of the STAT0 register
might require some amount of delays (to be inserted by
the microcontroller) between configuring the diagnostic
and reading the status register due to the settling time
needed to charge/discharge the external capacitive load
on the D_ pins.
Local Jack Sense
The device is configured for jack sense function when the
jack is localized to the same module. In this application
example, the diagnostic I/O D1 is configured as a 97µA
current-source output and D0 is configured for voltage
sensing. When a plug is not inserted, the internal spring
contact of the jack shorts D1 to D0. The 97µA current
source from D1 pulls D0 to VDD resulting in DH0 = 1.
When a plug is inserted, the internal spring contact of the
jack is forced open and disconnects D1 from D0. This
results in D0 going low and hence DH0 = 0.
Remote Jack Sense Detection
When the jack is remotely located, the device can be used
for additional fault detection of the wiring harness used for
the connection. See the Typical Application Circuits.
Differential Connection
For fully differential applications, the device can be configured to detect faults in the wiring harness as shown in
the Typical Application Circuits.
Table 4. Local Jack Sense Diagnostic Configuration
CONFIGURATION
FUNCTION
COMPARATOR OUTPUT
STATUS
D1[3:0] = 0010
D0[3:0] = 1110
Source 97µA
Source off
DH0 = H
Device not plugged in
D1[3:0] = 0010
D0[3:0] = 1110
Source 97µA
Source off
DH0 = L
Device plugged in
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Maxim Integrated │ 20
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
MAX13335E/MAX13336E
D1[3:0] ≥ 0010
97µA
D1
VIDH
L
VIDL
R
C
D0[3:0] = 1110
40µA TO
705µA
D0
VIDH
DH0
DL0
VIDL
Figure 11. Diagnostic Setup for Local Jack Sense
Audio Presence Detection
When the device is used in an auxiliary input amplifier, it can detect if audio is present at the inputs so the
downstream DSP does not have to continuously convert
the analog signal to digital in order to monitor the audio
stream. This can save two ADC inputs as the auxiliary
input can be muxed with another audio stream that is
mutually exclusive. To do this, perform the following steps:
www.maximintegrated.com
1) Set the gain in the GAIN register based on the
required input audio level where the APD threshold is
exceeded. The threshold is set to 200mVRMS/G_[3:0].
2) Set API bit in the CTRL0 register to enable the APD
interrupt.
When the input audio level exceeds 200mVRMS/G_[3:0]
the INT pin is asserted. The microcontroller can read back
the STAT0 register to check for APD = 1.
Maxim Integrated │ 21
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
MAX13335E/MAX13336E
D1[3:0] = 0000
40µA TO
705µA
D1
VIDH
1kΩ-10kΩ
1kΩ-10kΩ
CONNECTOR
L
VIDL
R
C
D3
D2[3:0] = 1111
D3[3:0] = 1101
40µA TO
705µA
0-10kΩ
D2
VIDH
705µA
VIDH
DH3
DL2
VIDL
VIDL
Figure 12. Diagnostic Setup for Remote Jack Sense
Low-Power Standby with Jack Sense
4) Set D0[3:0] = 0001 to source 40µA out of the D0 pin.
1) Connect D0 to the R (or L) of the jack.
When a plug is inserted, the DH0 comparator trips and
subsequently asserts the interrupt INT pin. The microcontroller can read back the STAT0 register to check for DH0
= 1 and follow up by setting SHDN to 0.
2) Connect RSENSE (or LSENSE) of the jack with a 50Ω
resistor to ground.
In the standby state, the typical current consumption is
reduced to 290µA.
When the device is used as an auxiliary amplifier, there
is the option to put the device into a low-power standby
mode while waiting for a plug to be inserted into the jack.
To do this, perform the following steps:
5) Enable the JSI bit in the CTRL0 register.
3) Set the SHDN bit to 1 in the CTRL0 register to power
down the amplifier.
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Maxim Integrated │ 22
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
ESD Guide
For maximum protection against IEC 61000-4-2 and
ISO 10605 ESD pulses, a 1kΩ or larger resistor is recommended on every diagnostic D_ pin before the input
AC-coupling capacitor. Additionally, a suitable ESD diode
must be connected from the DC-blocking ceramic capacitor to ground. The ESD diode can be connected on either
side of the DC-blocking capacitor; however, depending
on application requirements, the IC side may allow for a
lower clamping voltage, which results in a smaller ESD
device. If the input source is always DC biased to VBAT/2,
then a unidirectional ESD device can be used when
clamping on the input side of the DC-blocking capacitor.
See Figure 13.
1nF
1nF
1nF
MAX13335E/MAX13336E
1nF
1kΩ
2.2µF
20Ω
1kΩ
2.2µF
20Ω
20Ω
1kΩ
2.2µF
20Ω
D3
D2
D1
D0
I 2C
AND
CONTROL
DIAGNOSTICS
INLINL+
PGA
INR+
INR-
PGA
1kΩ
2.2µF
Figure 13. ESD Protection Technique Against IEC 61000-4-2 and ISO 10605 Pulses
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Maxim Integrated │ 23
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Typical Application Circuits (continued)
LOCAL JACK SENSE CONNECTION
3.3V OR 5V
1µF
VDD
MAX13335E/MAX13336E
40µA TO
705µA
D3
D1
2kΩ
ESD PROTECTION
D2
D_[3:0]
VIDH
DH_
I2C
AND
CONTROL
2kΩ
SCL
INT
DL_
D0
2kΩ
SDA
VIDL
X4
R
2.2µF
2.2µF
C
2.2µF
2.2µF
AUDIO
PRESENCE
DETECT
INLINL+
INR+
ESD PROTECTION
L
INR-
OUTL
PGA
OUTR
PGA
GND
REF
10µF
EXTERNAL ESD PROTECTION COMPONENTS ARE NOT SHOWN.
www.maximintegrated.com
Maxim Integrated │ 24
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Typical Application Circuits (continued)
REMOTE JACK SENSE CONNECTION
3.3V OR 5V
1µF
VDD
MAX13335E/MAX13336E
40µA TO
705µA
D3
D_[3:0]
D2
D1
ESD PROTECTION
2kΩ
VIDH
DH_
I2C
AND
CONTROL
2kΩ
SCL
INT
DL_
D0
2kΩ
SDA
VIDL
L
R
C
2.2µF
2.2µF
2.2µF
2.2µF
AUDIO
PRESENCE
DETECT
INLINL+
INR+
INR-
ESD PROTECTION
CONNECTOR
X4
OUTL
PGA
OUTR
PGA
GND
REF
10µF
EXTERNAL ESD PROTECTION COMPONENTS ARE NOT SHOWN.
www.maximintegrated.com
Maxim Integrated │ 25
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Typical Application Circuits (continued)
DIFFERENTIAL CONNECTION
3.3V OR 5V
1µF
VDD
MAX13335E/MAX13336E
40µA TO
705µA
D3
D_[3:0]
D2
D1
ESD PROTECTION
2kΩ
VIDH
DH_
I2C
AND
CONTROL
2kΩ
SCL
INT
DL_
D0
2kΩ
SDA
VIDL
X4
L2.2µF
L+
2.2µF
R+
2.2µF
R-
AUDIO
PRESENCE
DETECT
INLINL+
INR+
ESD PROTECTION
2.2µF
INR-
OUTL
PGA
OUTR
PGA
GND
REF
10µF
EXTERNAL ESD PROTECTION COMPONENTS ARE NOT SHOWN.
www.maximintegrated.com
Maxim Integrated │ 26
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Ordering Information
PART
TEMP RANGE
GAIN RANGE (dB)
OPTIONS
PIN-PACKAGE
MAX13335EGEE/V+
-40°C to +105°C
-14 to +16
Differential VIN up to 4VRMS;
quasi-differential VIN up to 2VRMS
16 QSOP
MAX13336EGEE/V+
-40°C to +105°C
-22 to +8
Differential VIN up to 7VRMS;
quasi-differential VIN up to 3.5VRMS
16 QSOP
/V denotes an automotive qualified part.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Chip Information
PROCESS: BCD
www.maximintegrated.com
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
16 QSOP
E16+1
21-0055
90-0167
Maxim Integrated │ 27
MAX13335E/MAX13336E
Dual Automotive Differential Audio Receivers
with I2C Control and Diagnostics
Revision History
REVISION
NUMBER
REVISION
DATE
PAGES
CHANGED
0
1/12
Initial release
—
1
7/12
Corrected the read operation procedure in the Single Byte-Read Operation and
Burst-Read Operation sections
14
2
9/17
Added row for CTRL0.DGAIN=0 to Diagnostic I/O section in Electrical Characteristics
table; added Bit 3: DGAIN reference below the Control Register 0 (CTRL0) table
DESCRIPTION
5, 17
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
© 2017 Maxim Integrated Products, Inc. │ 28
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
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MAX13335EEVKIT+ MAX13335EGEE/V+ MAX13335EGEE/V+T MAX13336EGEE/V+
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