19-3817; Rev 0; 5/06
Audio Processor with Pushbutton Interface
General Description
The MAX5406 stereo audio processor provides a com-
plete audio solution with volume, balance, bass, and
treble controls. It features dual 32-tap logarithmic
potentiometers for volume control, dual potentiometers
for balance control, and linear digital potentiometers for
tone control. A simple debounced pushbutton interface
controls all functions. The MAX5406 advances the
wiper setting once per button push. Maxim’s propri-
etary SmartWiper™ control eliminates the need for a
microcontroller (µC) to increase the wiper transition
rate. Holding the control input low for more than 1s
advances the wiper at a rate of 4Hz for 4s and 16Hz
thereafter. An integrated click/pop suppression feature
eliminates the audible noise generated by the wiper’s
movements.
The MAX5406 provides a subwoofer output that inter-
nally combines the left and right channels. An external
filter capacitor allows for a customized cut-off frequen-
cy for the subwoofer output. A bass-boost mode
enhances the low-frequency response of the left and
right channels. An integrated bias amplifier generates
the required (V
DD
+ V
SS
) / 2 bias voltage, eliminating
the need for external op amps for unipolar operation.
The MAX5406 also features ambience control to
enhance the separation of the left- and right-channel
outputs for headphones and desktop speakers sys-
tems, and a pseudostereo feature that approximates
stereo sound from a monophonic signal.
The MAX5406 is available in a 7mm x 7mm, 48-pin
TQFN package and in a 48-pin TSSOP package and is
specified over the extended (-40°C to +85°C) tempera-
ture range.
Features
♦
Audio Processor Including All Op Amps and Pots
for Volume, Balance, Mute, Bass, Treble,
Ambience, Pseudostereo, and Subwoofer
♦
32-Tap Volume Control (2dB Steps)
♦
Small, 7mm x 7mm, 48-Pin TQFN and 48-Pin
TSSOP Packages
♦
Single +2.7V to +5.5V or Dual ±2.7V Supply
Operation
♦
Clickless Switching and Control
♦
Mute Function to < -90dB (typ)
♦
Channel Isolation > -70dB (typ)
♦
Two Sets of Single-Ended or Differential Stereo
Inputs Can Be Used for Summing/Mixing
♦
Debounced Pushbutton Interface Works with
Momentary Contact Switches or Microprocessors
(µPs)
♦
Low 0.2µA (typ) Shutdown Supply Current
♦
Shutdown Stores All Control Settings
♦
0.02% (typ) THD into 10kΩ Load, 25µV
RMS
(typ)
Output Noise
♦
Internally Generated 1/2 Full-Scale Bias Voltage
for Single-Ended Applications
♦
Power-On Volume Setting to -20dB
♦
Internal Passive RF Filters for Analog Inputs
Prevent High Frequencies from Reaching the
Speakers
MAX5406
Applications
Automotive Rear-Seat Entertainment (RSE)
Desktop Speakers
Portable Audio
PDAs or MP3 Player Docking Stations
Karaoke Machines
Flat-Screen TVs
PART
MAX5406EUM
Ordering Information
TEMP RANGE
-40°C to +85°C
PIN-
PACKAGE
48 TSSOP
PKG
CODE
U48-1
T4877-6
MAX5406ETM* -40°C to +85°C 48 TQFN
*Future
product—contact factory for availability.
Pin Configurations appear at end of data sheet.
SmartWiper is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________
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.
Audio Processor with Pushbutton Interface
MAX5406
ABSOLUTE MAXIMUM RATINGS
L1_H, L1_L, L2_H, L2_L
to V
SS
.......................-0.3V to the lower of (V
DD
+ 0.3V) or +6V
R1_H, R1_L, R2_H, R2_L
to V
SS
.......................-0.3V to the lower of (V
DD
+ 0.3V) or +6V
AMB, BALL, BALR, VOLUP, VOLDN, MUTE, SHDN, BASSDN,
BASSUP, TREBDN, TREBUP
to DGND .............-0.3V to the lower of (V
LOGIC
+ 0.3V) or +6V
CTL_, CTR_, CBL_, CBR_, CLS_, CRS_, CSUB, CBIAS, CMSNS,
AMBLI, AMBRI, BIAS
to V
SS
.......................-0.3V to the lower of (V
DD
+ 0.3V) or +6V
LOUT, ROUT, SUBOUT, LMR,
LPR to V
SS
................-0.3V to the lower of (V
DD
+ 0.3V) or +6V
V
DD
to V
SS
................................................................-0.3V to +6V
V
DD
to V
LOGIC
........................................................................±6V
V
LOGIC
to DGND ......................................................-0.3V to +6V
DGND to V
SS
............................................................-0.3V to +6V
LOUT, ROUT, SUBOUT Short Circuited to V
SS
.........Continuous
Continuous Power Dissipation (T
A
= +70°C)
48-Pin TQFN (derate 27.8mW/°C above +70°C) ........2222mW
48-Pin TSSOP (derate 16mW/°C above +70°C) .........1282mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°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.
ELECTRICAL CHARACTERISTICS
(V
DD
= V
LOGIC
= +5.0V, V
SS
= 0, V
BIAS
= V
CMSNS
= V
DD
/ 2, DGND = 0, ambience disabled, V
AMBLI
= V
AMBRI
= V
BIAS,
V
R1_L
=
V
L1_L
= V
R2_L
= V
L2_L
= external V
BIAS
, C
CSUB
= 0.15µF, C
CLS
= C
CRS
= 1µF, C
CBL
= C
CBR
= 3.3nF, C
CTL
= C
CTR
= 4.7nF, C
BIAS
=
0.1µF, C
CBIAS
= 50µF (see the
Typical Application Circuit),
T
A
= T
MIN
to T
MAX
unless otherwise specified. Typical values are at T
A
=
+25°C). (Note1)
PARAMETER
Signal-Inputs Input Resistance
Signal-Inputs Input Capacitance
RF Rejection
SYMBOL
R
IN
C
IN
CONDITIONS
With respect to
V
BIAS
With respect to V
BIAS
2MHz to 2.4GHz two-tone test, 2/2.01MHz
input to 10kHz out
V
DD
= +5V, V
SS
= 0, V
CM
= V
BIAS
, gain
error
≤
-0.5dB
V
DD
= +2.7V, V
SS
= -2.7V, V
CM
= V
BIAS
,
gain error
≤
-0.5dB
V
DD
= +5V, V
SS
= 0, V
BIAS
= V
DD
/ 2,
V
DIFF
= 100mV
V
DD
= +2.7V, V
SS
= -2.7V, V
BIAS
= 0,
V
DIFF
= 100mV
Internally generated (V
CMSNS
= V
SS
)
L_ _H
=
R_ _H
=
V
BIAS,
L_ _L = R_ _L =
open, V
CMSNS =
V
DD
(Note 2)
(Note 2)
(Note 2)
(Note 2)
(Note 2)
(Note 2)
(Note 2)
-63
-0.5
10
-4
-4.5
R
INH
R
INL
MIN
8
16
TYP
10
20
5
20
+4
V
+4.5
MAX
UNITS
kΩ
pF
dBc
Differential Input Voltage Range
V
IN
Common-Mode Input Voltage Range
V
CM
V
SS
+ 0.5V
V
DD
- 0.5V
V
Bias Voltage
Bias-Voltage Input Current
AUDIO PROCESSING FUNCTIONS
Maximum Balance Difference
Minimum Balance Difference
Balance Resolution
Maximum Volume Attenuation
Minimum Volume Attenuation
Volume Resolution
Volume-Control Steps
V
BIAS
(V
DD
+ V
SS
) / 2
1
V
mA
12
0
2
-62
0
2
32
14
dB
dB
dB
-59
+0.5
dB
dB
dB
steps
2
_______________________________________________________________________________________
Audio Processor with Pushbutton Interface
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= V
LOGIC
= +5.0V, V
SS
= 0, V
BIAS
= V
CMSNS
= V
DD
/ 2, DGND = 0, ambience disabled, V
AMBLI
= V
AMBRI
= V
BIAS,
V
R1_L
=
V
L1_L
= V
R2_L
= V
L2_L
= external V
BIAS
, C
CSUB
= 0.15µF, C
CLS
= C
CRS
= 1µF, C
CBL
= C
CBR
= 3.3nF, C
CTL
= C
CTR
= 4.7nF, C
BIAS
=
0.1µF, C
CBIAS
= 50µF (see the
Typical Application Circuit),
T
A
= T
MIN
to T
MAX
unless otherwise specified. Typical values are at T
A
=
+25°C). (Note1)
PARAMETER
Gain Matching of Input 1 to Input
2 of Each Channel
Gain Matching of Left to Right
Channel
Bass-Boost Range
Bass-Cut Range
Treble-Boost Range
Treble-Cut Range
Bass-Boost/-Cut Steps
Treble-Boost/-Cut Steps
Bass End-to-End Resistance
Treble End-to-End Resistance
Bass Series Resistance
Treble Series Resistance
Mute Attenuation
Total Harmonic Distortion Plus
Noise
Interchannel Crosstalk
ROUT/LOUT OUTPUTS
Maximum Load Capacitance
Output-Voltage Swing
Output Offset Voltage
Short-Circuit Output Current
Output Resistance
C
LOAD
V
OUTP-P
V
OOS
I
SC
R
_OUT
R
L
= 10kΩ, V
DD
= +2.7V, V
SS
= -2.7V
V
DD
= +2.7V, V
SS
= -2.7V, volume = 0dB,
R
L
= 10kΩ, inputs = V
BIAS
Shorted to V
SS
I
LOAD
= 100µA to 500µA
-2.3
-30
0
15
10
100
+2.3
+30
pF
V
mV
mA
Ω
R
BPOT
R
TPOT
R
B
R
T
SYMBOL
CONDITIONS
Volume = 0dB (Note 2)
Volume = 0dB (Note 2)
f
BASS
= 1kHz, treble = 0dB,
C
CB_
= open, C
CT_
= open (Note 3)
f
BASS
= 1kHz, treble = 0dB,
C
CB_
= open, C
CT_
= open (Note 3)
f
TREBLE
= 1kHz, bass = 0dB,
C
CB_
= open, C
CT_
= short (Note 3)
f
TREBLE
= 1kHz, bass = 0dB,
C
CB_
= open, C
CT_
= short (Note 3)
Max boost to max cut
Max boost to max cut
MIN
-0.1
-0.1
10
10
10
10
14
14
15
15
21
21
116
17
40
3.5
-90
TYP
MAX
+0.1
+0.1
UNITS
dB
dB
dB
dB
dB
dB
steps
steps
kΩ
kΩ
kΩ
kΩ
dB
MAX5406
AC PERFORMANCE (V
IN
= 1V
P-P
, R
L
= 10kΩ, V
DD
= +2.7V, V
SS
= -2.7V, volume = 0dB, treble = bass = 0dB)
THD+N
(Notes 4, 5)
L to R or R to L
0.02
-70
0.05
%
dB
_______________________________________________________________________________________
3
Audio Processor with Pushbutton Interface
ELECTRICAL CHARACTERISTICS (continued)
MAX5406
(V
DD
= V
LOGIC
= +5.0V, V
SS
= 0, V
BIAS
= V
CMSNS
= V
DD
/ 2, DGND = 0, ambience disabled, V
AMBLI
= V
AMBRI
= V
BIAS,
V
R1_L
=
V
L1_L
= V
R2_L
= V
L2_L
= external V
BIAS
, C
CSUB
= 0.15µF, C
CLS
= C
CRS
= 1µF, C
CBL
= C
CBR
= 3.3nF, C
CTL
= C
CTR
= 4.7nF, C
BIAS
=
0.1µF, C
CBIAS
= 50µF (see the
Typical Application Circuit),
T
A
= T
MIN
to T
MAX
unless otherwise specified. Typical values are at T
A
=
+25°C). (Note1)
PARAMETER
SYMBOL
CONDITIONS
f
BW
= 20Hz to 20kHz, V
IN
= V
BIAS
,
mute on, noise measured at LOUT and
ROUT (Notes 2, 4, 5)
Output Noise
e
n
f
BW
= 20Hz to 20kHz, V
IN
= V
BIAS
, mute
off, volume = 0dB, noise measured at
LOUT and ROUT (Notes 2, 4, 5)
Power-Supply Rejection Ratio
SUBWOOFER OUTPUT
Gain
Highpass Filter Cutoff Frequency
Internal Highpass Cutoff
Resistance
Lowpass Filter Cutoff Frequency
Internal Lowpass Cutoff
Resistance
Maximum Load Capacitance
Output-Voltage Swing
Output Offset Voltage
Short-Circuit Output Current
Output Resistance
R
SUB
C
SUBLOAD
V
SUBOUTP-P
R
L
= 10kΩ, V
DD
= +2.7V, V
SS
= -2.7V
V
SUBOOS
I
SUBSC
R
SUBOUT
V
DD
= +2.7V, V
SS
= -2.7V, volume = 0dB,
R
L
= 10kΩ
Shorted to V
SS
I
LOAD
= 100µA to 500µA
f
BW
= 20Hz to 20kHz, V
IN
= V
BIAS
,
mute on, noise measured at SUBOUT
(Notes 2, 4, 5)
f
BW
= 20Hz to 20kHz, V
IN
= V
BIAS
,
volume = 0dB, mute off, noise measured at
SUBOUT (Notes 2, 4, 5)
100mV
P-P
at 217Hz on V
DD
100mV
P-P
at 1kHz on V
DD
9
-2.3
-15
0
12
10
11
µV
RMS
25
-70
-65
50
Figures 2a, 11a, 11b
Figure 2b, 11a, 11b
Figure 3
Figure 3
Figure 3
Figure 3
30
40
1
4
4
16
35
R
_S
(V
L1_H
- V
L1_L
) to (V
SUBOUT
- V
BIAS
),
volume = 0dB (Note 2)
Volume = 0dB
Figure 12
Volume = 0dB
Figure 12
-6
15
13.8
100
10.6
100
+2.3
+15
dB
Hz
kΩ
Hz
kΩ
pF
V
mV
mA
Ω
PSRR
100mV
P-P
at 217Hz on V
DD
100mV
P-P
at 1kHz on V
DD
25
-70
-65
35
MIN
TYP
3.5
MAX
9.5
µV
RMS
UNITS
dB
Output Noise
e
n
Power-Supply Rejection Ratio
PSRR
dB
PUSHBUTTON CONTACT INPUTS (MUTE,
AMB, VOLUP, VOLDN, BALL, BALR, BASSUP, BASSDN, TREBUP, TREBDN)
Internal Pullup Resistor
Single-Pulse Input Low Time
Repetitive Input Pulse Separation
Time
First Autoincrement Point
First Autoincrement Rate
Second Autoincrement Point
Second Autoincrement Rate
R
PU
t
LPW
t
HPW
t
A1
f
A1
t
A2
f
A2
kΩ
ms
ms
s
Hz
s
Hz
4
_______________________________________________________________________________________
Audio Processor with Pushbutton Interface
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= V
LOGIC
= +5.0V, V
SS
= 0, V
BIAS
= V
CMSNS
= V
DD
/ 2, DGND = 0, ambience disabled, V
AMBLI
= V
AMBRI
= V
BIAS,
V
R1_L
=
V
L1_L
= V
R2_L
= V
L2_L
= external V
BIAS
, C
CSUB
= 0.15µF, C
CLS
= C
CRS
= 1µF, C
CBL
= C
CBR
= 3.3nF, C
CTL
= C
CTR
= 4.7nF, C
BIAS
=
0.1µF, C
CBIAS
= 50µF (see the
Typical Application Circuit),
T
A
= T
MIN
to T
MAX
unless otherwise specified. Typical values are at T
A
=
+25°C). (Note1)
PARAMETER
Input-Voltage High
Input-Voltage Low
SHDN
Input-Voltage High
SHDN
Input-Voltage Low
Input Leakage Current
Input Capacitance
Input-Voltage High
Input-Voltage Low
SHDN
Input-Voltage High
SHDN
Input-Voltage Low
Input Leakage Current
Input Capacitance
TIMING CHARACTERISTICS
Wiper Settling Time
t
WS
Click/pop suppression inactive, Figures 2a,
11a, 11b
45
ms
5
V
IH
V
IL
V
IHSHDN
V
ILSHDN
2
0.6
±5
2
0.6
5
SYMBOL
V
IH
V
IL
V
IHSHDN
V
ILSHDN
3.4
0.8
±5
CONDITIONS
MIN
2.4
0.8
TYP
MAX
UNITS
V
V
V
V
µA
pF
V
V
V
V
µA
pF
DIGITAL INPUTS (V
LOGIC
> 3.6V) (MUTE,
AMB, VOLUP, VOLDN, BALL, BALR, BASSUP, BASSDN, TREBUP, TREBDN)
MAX5406
DIGITAL INPUTS (V
LOGIC
≤
3.6V) (
MUTE, AMB
,
VOLUP, VOLDN
,
BALL
,
BALR, BASSUP, BASSDN, TREBUP, TREBDN)
POWER SUPPLIES (V
CMSNS
= V
SS
, internal bias enabled)
Supply-Voltage Difference
Positive Analog Supply Voltage
Negative Analog Supply Voltage
Dual-Supply Positive Supply
Voltage
Active Positive Supply Current
V
DD
- V
SS
V
DD
V
SS
V
DD
V
SS
= -2.7V
No signal, all logic inputs pulled high to
V
LOGIC
or unconnected,
SHDN
= V
LOGIC
,
R
L
= 10kΩ (Note 6)
No signal, all logic inputs connected to
DGND or V
LOGIC
, V
DD
= +5V, V
SS
= 0
I
SS
No signal, all logic inputs connected to
DGND or V
LOGIC
, V
DD
= +2.7V,
V
SS
= -2.7V
No signal, V
DD
= 5V, V
SS
= 0, all logic
inputs connected to DGND or V
LOGIC
,
SHDN
= DGND
No signal, V
DD
= +2.7V, V
SS
= -2.7V,
all logic at DGND or V
LOGIC
,
SHDN
= DGND
I
DD
I
SS
-13
+2.7
-2.7
0
+5.5
+5.5
0
+2.7
V
V
V
V
I
DD
10
13
mA
-10
mA
Active Negative Supply Current
(Note 6)
-13
-10
0.2
µA
0.2
50
Shutdown Supply Current (Note 6)
I
SHDN
_______________________________________________________________________________________
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
