max5406eumt Maxim Integrated Products, Inc., max5406eumt Datasheet

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max5406eumt

Manufacturer Part Number
max5406eumt
Description
Max5406 Audio Processor With Pushbutton Interface
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
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
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.
19-3817; Rev 0; 5/06
SmartWiper is a trademark of Maxim Integrated Products, Inc.
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.
Automotive Rear-Seat Entertainment (RSE)
Desktop Speakers
Portable Audio
PDAs or MP3 Player Docking Stations
Karaoke Machines
Flat-Screen TVs
Audio Processor with Pushbutton Interface
DD
________________________________________________________________ Maxim Integrated Products
+ V
SS
General Description
) / 2 bias voltage, eliminating
Applications
♦ Audio Processor Including All Op Amps and Pots
♦ 32-Tap Volume Control (2dB Steps)
♦ Small, 7mm x 7mm, 48-Pin TQFN and 48-Pin
♦ Single +2.7V to +5.5V or Dual ±2.7V Supply
♦ Clickless Switching and Control
♦ Mute Function to < -90dB (typ)
♦ Channel Isolation > -70dB (typ)
♦ Two Sets of Single-Ended or Differential Stereo
♦ Debounced Pushbutton Interface Works with
♦ Low 0.2µA (typ) Shutdown Supply Current
♦ Shutdown Stores All Control Settings
♦ 0.02% (typ) THD into 10kΩ Load, 25µV
♦ Internally Generated 1/2 Full-Scale Bias Voltage
♦ Power-On Volume Setting to -20dB
♦ Internal Passive RF Filters for Analog Inputs
*Future product—contact factory for availability.
Pin Configurations appear at end of data sheet.
MAX5406ETM*
MAX5406EUM
for Volume, Balance, Mute, Bass, Treble,
Ambience, Pseudostereo, and Subwoofer
TSSOP Packages
Operation
Inputs Can Be Used for Summing/Mixing
Momentary Contact Switches or Microprocessors
(µPs)
Output Noise
for Single-Ended Applications
Prevent High Frequencies from Reaching the
Speakers
PART
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
PIN-
PACKAGE
48 TSSOP
48 TQFN
Features
RMS
T4877-6
CODE
U48-1
(typ)
PKG
1

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max5406eumt Summary of contents

Page 1

... Portable Audio PDAs or MP3 Player Docking Stations Karaoke Machines Flat-Screen TVs SmartWiper is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ Maxim Integrated Products 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 Including All Op Amps and Pots ...

Page 2

Audio Processor with Pushbutton Interface ABSOLUTE MAXIMUM RATINGS L1_H, L1_L, L2_H, L2_L to V .......................-0.3V to the lower R1_H, R1_L, R2_H, R2_L to V .......................-0.3V to the lower AMB, BALL, BALR, VOLUP, VOLDN, MUTE, ...

Page 3

Audio Processor with Pushbutton Interface ELECTRICAL CHARACTERISTICS (continued +5.0V LOGIC SS BIAS external V L1_L R2_L L2_L BIAS 0.1µ 50µF (see the Typical ...

Page 4

Audio Processor with Pushbutton Interface ELECTRICAL CHARACTERISTICS (continued +5.0V LOGIC SS BIAS external L1_L R2_L L2_L BIAS 0.1µ 50µF (see ...

Page 5

Audio Processor with Pushbutton Interface ELECTRICAL CHARACTERISTICS (continued +5.0V LOGIC SS BIAS external V L1_L R2_L L2_L BIAS 0.1µ 50µF (see the Typical ...

Page 6

Audio Processor with Pushbutton Interface ELECTRICAL CHARACTERISTICS (continued +5.0V LOGIC SS BIAS external L1_L R2_L L2_L BIAS 0.1µ 50µF (see ...

Page 7

Audio Processor with Pushbutton Interface (T = +25°C, unless otherwise noted.) A BAXANDALL CURVE 2.7V -2.7V DD LOGIC 0. P-P BASS = TREBLE -10 ...

Page 8

Audio Processor with Pushbutton Interface (T = +25°C, unless otherwise noted.) A ROUT FREQUENCY RESPONSE 5V LOGIC SS VOLUP = 0dB -10 -15 -20 -25 -30 -35 10 100 ...

Page 9

Audio Processor with Pushbutton Interface (T = +25°C, unless otherwise noted.) A WIPER SWITCHING TRANSIENT MAX5406 toc07a DC LEVEL AT THE INPUT OUTPUT 10μs/div I vs. V LOGIC LOGIC 240 V = 5.5V INACTIVE MODE ...

Page 10

Audio Processor with Pushbutton Interface (T = +25°C, unless otherwise noted.) A TOTAL SUPPLY CURRENT vs. SUPPLY VOLTAGE ( LOGIC 11.5 INACTIVE MODE, NO BUTTON PUSHED 11.0 10 -40°C 10.0 ...

Page 11

Audio Processor with Pushbutton Interface PIN NAME TSSOP TQFN Bypass Capacitor Connection Point to Internally Generated Bias. Bypass CBIAS with a 50µ CBIAS capacitor to system analog ground Negative Power-Supply Input. Bypass with a 0.1µF ...

Page 12

Audio Processor with Pushbutton Interface PIN NAME TSSOP TQFN Active-Low Mute Control Input. Toggles state between muted and not muted. When in the mute state, all wipers are moved to the low end of the volume potentiometers. The last state ...

Page 13

Audio Processor with Pushbutton Interface PIN NAME TSSOP TQFN Right-Channel Bass Tone Control Capacitor Terminal 2. Connect a nonpolorized capacitor between 36 30 CBR2 CBR2 and CBR1 to set the bass cutoff frequency. See the Tone Control section for more ...

Page 14

Audio Processor with Pushbutton Interface L1_H RF FILTER L1_L L2_H RF FILTER L2_L CBIAS BIAS GENERATOR CMSNS BIAS R1_H RF FILTER R1_L R2_H RF FILTER R2_L MAX5406 DGND V SS Figure 1. Block Diagram Detailed Description The MAX5406 implements dual ...

Page 15

Audio Processor with Pushbutton Interface Table 1. Wiper Action vs. Pushbutton Contact Duration CONTACT WIPER ACTION DURATION t < motion (debouncing) (Figures 2a and 2b) LPW Wiper changes position once (Figures 2a ≤ t ≤ LPW ...

Page 16

Audio Processor with Pushbutton Interface VOLUP t LPW WIPER MOTION Figure 2a. Single-Pulse Input t LPW VOLUP WIPER MOTION Figure 2b. Repetitive Input-Pulse Separation Time t A1 VOLUP WIPER MOTION Figure 3. ...

Page 17

Audio Processor with Pushbutton Interface L Figure 4. Basic Volume-Control Operation VOLUME LEVEL IS SET L 1dB PER STEP Figure 5. Basic Balance-Control Operation VOLUME LEVEL IS AT MAXIMUM L a) 1dB PER STEP L b) 2dB PER STEP FROM ...

Page 18

Audio Processor with Pushbutton Interface C _SP B_1 B_2 40kΩ 116kΩ 40kΩ BUFFER BASS POT INPUT C T_1 C T_ TREBLE POT C T_2 TO BIAS 3.5kΩ 17kΩ 3.5kΩ Figure 7. Bass/Treble Output Stage Alternatively, the ...

Page 19

Audio Processor with Pushbutton Interface PUSHBUTTON PRESSED 1 0 Figure 11a. Wiper Transition Timing Diagram (No Zero Crossing Detected) Ambience Control Use the ambience function for boom boxes, head- phones, desktop speakers, or other audio products where the speakers are ...

Page 20

Audio Processor with Pushbutton Interface SWITCH CONTACT PUSHBUTTON PRESSED IS BOUNCING 1 0 WIPER MOTION Figure 11b. Wiper Transition Timing Diagram (Zero Crossing Detected × LOUT ...

Page 21

Audio Processor with Pushbutton Interface Pseudostereo creates a sound approximating stereo from a monophonic signal. Use the equations for pseu- dostereo response calculations × LOUT × ROUT R ...

Page 22

Audio Processor with Pushbutton Interface Subwoofer Output The subwoofer output of the MAX5406 combines and filters the left and right inputs for output to a subwoofer. Choose the capacitor values to set the bandpass filter to frequencies between 15Hz and ...

Page 23

Audio Processor with Pushbutton Interface TOP VIEW CBIAS 1 48 BIAS CMSNS SS L1_H 3 46 R1_H MAX5406 L1_L 4 45 R1_L L2_L 5 44 R2_L 43 R2_H L2_H 6 LMR AMBLI 8 ...

Page 24

Audio Processor with Pushbutton Interface X2 LMR CELL PHONE, MP3, L1_H STEREO IN1 OR ACCESSORY R1_H CONNECTORS MUTE AMB V LOGIC SHDN DGND CTR1 C CTR CTR2 CTL1 C CTL CTL2 CSUB C CSUB SUBOUT L2_H STEREO IN2 (AUX) R2_H ...

Page 25

Audio Processor with Pushbutton Interface (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) D/2 D ______________________________________________________________________________________ E DETAIL A E/2 e (ND- ...

Page 26

... Boblet Package Information (continued) H BOTTOM VIEW SEE DETAIL END VIEW SEATING PLANE ( ) PARTING LINE 0.25 L DETAIL A Printed USA is a registered trademark of Maxim Integrated Products, Inc WITH PLATING c1 c BASE METAL SECTION C-C PACKAGE OUTLINE, 48 & 56L TSSOP, 6.1mm BODY 1 21-0155 C 1 ...

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