MAX5456EEE+ Maxim Integrated Products, MAX5456EEE+ Datasheet

IC POT STER AUDIO TAPER 16-QSOP

MAX5456EEE+

Manufacturer Part Number
MAX5456EEE+
Description
IC POT STER AUDIO TAPER 16-QSOP
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX5456EEE+

Taps
32
Resistance (ohms)
10K
Number Of Circuits
2
Temperature Coefficient
50 ppm/°C Typical
Memory Type
Volatile
Interface
Pushbutton
Voltage - Supply
2.7 V ~ 5.5 V, ±2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-QSOP
Resistance In Ohms
10K
Number Of Pots
Dual
Taps Per Pot
32
Resistance
10 KOhms
Wiper Memory
Volatile
Digital Interface
Up/Down
Operating Supply Voltage
2.7 V to 5.5 V
Supply Current
1 uA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Description/function
Stereo Audio Taper Potentiometer
Mounting Style
SMD/SMT
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.7 V
Tolerance
30 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX5456/MAX5457 dual, logarithmic taper digital
potentiometers feature a simple pushbutton interface
that controls volume and balance in audio applications.
Each potentiometer has 32 tap points and replaces
mechanical potentiometers. Refer to the MAX5408–
MAX5411 data sheet for SPI™ versions of the MAX5456/
MAX5457.
Use the MAX5456/MAX5457 digital inputs with momen-
tary contact single-pole/single-throw (SPST) pushbutton
switches. Each input includes internal debounce cir-
cuitry and a 50kΩ pullup resistor.
The MAX5456/MAX5457 advance the wiper setting once
per button push. Maxim’s proprietary SmartWiper™ con-
trol eliminates the need for a microcomputer 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 per second thereafter.
The MAX5456/MAX5457 provide temperature coeffi-
cients of 50ppm/°C end-to-end and 5ppm/°C ratiomet-
ric and a nominal resistance of 10kΩ per potentiometer.
An integrated click/pop suppression feature minimizes
the audible noise generated by wiper transitions. The
typical total harmonic distortion plus noise (THD+N) for
these devices is 0.01%.
The MAX5457 features a 3-button interface with a
MODE input that toggles between volume- and balance-
control modes. An LED output indicates volume or bal-
ance mode. The MAX5456 features a 4-button interface
with separate inputs for up and down volume controls
and left and right balance controls.
The MAX5456/MAX5457 are available in 16-pin QSOP
and 16-pin TQFN packages and are specified over the
extended (-40°C to +85°C) temperature range.
19-3490; Rev 1; 12/05
Typical Application Circuits and Selector Guide appear at
end of data sheet.
SPI is a trademark of Motorola, Inc.
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.
Stereo Volume Control
Fading and Balancing Stereo Signals
Stereo Blending and Mixing
________________________________________________________________ Maxim Integrated Products
General Description
Stereo Audio Taper Potentiometers
Applications
with Pushbutton Interface
♦ SmartWiper Control Provides Accelerated Wiper
♦ Debounced Pushbutton Interface with Internal
♦ Logarithmic Taper with 2dB Steps Between Taps
♦ Single +2.7V to +5.5V or Dual ±2.7V Supply
♦ Low 0.5µA Standby Supply Current
♦ Clickless Switching
♦ 10kΩ End-to-End Fixed Resistance Value
♦ Mute Function to -90dB (typ)
♦ Power-On Reset to -12dB Wiper Position
♦ 32 Tap Positions for Each Wiper
♦ Small 16-Pin QSOP/TQFN Packages
*Future product—contact factory for availability.
Pin Configurations are continued at end of data sheet.
MAX5456EEE
MAX5456ETE*
MAX5457EEE
MAX5457ETE*
TOP VIEW
Motion
Pullup Resistors
Operation
PART
MODE_IND
DN/BAL0
UP/BAL1
MODE
SHDN
W0
H0
L0
TEMP RANGE
-40
-40
-40
-40
1
2
6
3
4
5
7
8
o
o
o
o
C to +85
C to +85
C to +85
C to +85
Ordering Information
MAX5457
Pin Configurations
QSOP
o
o
o
o
C 16 QSOP
C 16 TQFN
C 16 QSOP
C 16 TQFN
PIN-
PACKAGE
16
15
14
13
12
11
10
9
V
V
GND
V
H1
L1
W1
MUTE
DD
LOGIC
SS
Features
CODE
E16-1
T1644-4
E16-1
T1644-4
PKG
1

Related parts for MAX5456EEE+

MAX5456EEE+ Summary of contents

Page 1

... Typical Application Circuits and Selector Guide appear at end of data sheet. SPI is a trademark of Motorola, Inc. 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. ...

Page 2

Stereo Audio Taper Potentiometers with Pushbutton Interface ABSOLUTE MAXIMUM RATINGS (MAX5456) SHDN, MUTE, VOLUP, VOLDN, BAL_ to GND.....................................-0. (MAX5457) SHDN, MUTE, UP/BAL1, DN/BAL0, MODE, MODE_IND to GND...........................-0. H_, L_, and ..............................-0. ...

Page 3

Stereo Audio Taper Potentiometers ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V 0V, GND = 0V LOGIC SS unless otherwise specified.) (Note 1) PARAMETER SYMBOL First Autoincrement Point First Autoincrement Rate Second Autoincrement Point ...

Page 4

Stereo Audio Taper Potentiometers with Pushbutton Interface ( +2.7V to +5.5V 0V, GND = 0V LOGIC SS unless otherwise specified.) WIPER RESISTANCE vs. WIPER VOLTAGE 1200 1150 ...

Page 5

Stereo Audio Taper Potentiometers ( +2.7V to +5.5V 0V, GND = 0V LOGIC SS unless otherwise specified.) LOGIC SUPPLY CURRENT vs. LOGIC SUPPLY VOLTAGE 0.30 0.25 0.20 STANDBY LOGIC SUPPLY CURRENT 0.15 0.10 ...

Page 6

Stereo Audio Taper Potentiometers with Pushbutton Interface PIN NAME MAX5457 MAX5456 TQFN QSOP TQFN QSOP MODE 1 3 — — — — MODE_IND SHDN 6 8 ...

Page 7

Stereo Audio Taper Potentiometers Detailed Description The MAX5456/MAX5457 dual, logarithmic taper digital potentiometers feature a simple pushbutton interface that controls volume and balance in audio applications. Each potentiometer has 32 tap points and replaces mechanical potentiometers (see the Functional Diagrams). ...

Page 8

Stereo Audio Taper Potentiometers with Pushbutton Interface FROM 3c (d) L_ Figure 3. Volume-Control Operation Table 1. Wiper Position and Attenuation POSITION ATTENUATION (dB ...

Page 9

Stereo Audio Taper Potentiometers In balance-control mode, the MAX5456/MAX5457 adjust the balance between channel 0 and channel 1 while maintaining the set volume. For example, if the volume of channel 0 equals the volume of channel 1, forcing the balance ...

Page 10

Stereo Audio Taper Potentiometers with Pushbutton Interface Click/Pop Suppression The click/pop suppression feature reduces the audible noise (clicks and pops) that result from wiper transitions. The MAX5456/MAX5457 minimize this noise by allowing the wiper position changes only when V the ...

Page 11

Stereo Audio Taper Potentiometers Shutdown, SHDN Upon entering shutdown mode, the MAX5456/MAX5457 store the last wiper settings. The wipers move to the L_ end of the resistor string, and the H_ end of the resistor string disconnects from the signal ...

Page 12

Stereo Audio Taper Potentiometers with Pushbutton Interface Mode Control, MODE The MAX5457 MODE input toggles between volume- and balance-control modes. Force MODE low to toggle between volume-control and balance-control modes. For example, driving MODE low once while in volume- control ...

Page 13

Stereo Audio Taper Potentiometers LEFT CHANNEL MAX4494 PGND Figure 6. Volume/Balance Control ______________________________________________________________________________________ with Pushbutton Interface LOGIC V SHDN V DD LOGIC H0 L0 MAX5457 / 2 W0 ...

Page 14

Stereo Audio Taper Potentiometers with Pushbutton Interface Selector Guide PART INTERFACE MAX5456EEE 4-Button MAX5456ETE* 4-Button MAX5457EEE 3-Button MAX5457ETE* 3-Button *Future product—contact factory for availability. TOP VIEW VOLDN 1 VOLUP 2 BAL1 3 MAX5456 BAL0 ...

Page 15

Stereo Audio Taper Potentiometers H_ V PEAK MAX5456/MAX5457 PEAK MAX5456/MAX5457 L_ ______________________________________________________________________________________ with Pushbutton Interface Typical Application Circuit (Single Supply ∞ ...

Page 16

Stereo Audio Taper Potentiometers with Pushbutton Interface LOGIC SHUTDOWN MUTE L0 V GND SS 16 ______________________________________________________________________________________ SHDN MAX5456 CLICK/POP SUPPRESSION CIRCUITRY POSITION COUNTER POSITION COUNTER ...

Page 17

Stereo Audio Taper Potentiometers LOGIC SHUTDOWN DEBOUNCE MUTE L0 V GND SS ______________________________________________________________________________________ with Pushbutton Interface Functional Diagrams (continued) SHDN MODE_IND MAX5457 CLICK/POP SUPPRESSION CIRCUITRY ...

Page 18

Stereo Audio Taper Potentiometers 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.) 18 ______________________________________________________________________________________ Package Information PACKAGE OUTLINE, QSOP .150", .025" LEAD ...

Page 19

Stereo Audio Taper Potentiometers (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.) ______________________________________________________________________________________ with Pushbutton Interface Package Information (continued) PACKAGE OUTLINE, 12, 16, 20, 24, ...

Page 20

... 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. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2005 Maxim Integrated Products ...

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