MAX5457(2012) View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX5457 Datasheet PDF : 18 Pages
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EVALUATION KIT AVAILABLE
MAX5456/MAX5457
Stereo Audio Taper Potentiometers
with Pushbutton Interface
General 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. 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 is available in a 16-pin QSOP
packages and specified over the extended (-40°C to
+85°C) temperature range.
Applications
Stereo Volume Control
Fading and Balancing Stereo Signals
Stereo Blending and Mixing
Typical Application Circuits and Selector Guide appear at
end of data sheet.
SmartWiper is a trademark of Maxim Integrated Products, Inc.
Features
o SmartWiper Control Provides Accelerated Wiper
Motion
o Debounced Pushbutton Interface with Internal
Pullup Resistors
o Logarithmic Taper with 2dB Steps Between Taps
o Single +2.7V to +5.5V or Dual ±2.7V Supply
Operation
o Low 0.5µA Standby Supply Current
o Clickless Switching
o 10kΩ End-to-End Fixed Resistance Value
o Mute Function to -90dB (typ)
o Power-On Reset to -12dB Wiper Position
o 32 Tap Positions for Each Wiper
o Small 16-Pin QSOP Package
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
MAX5456EEE+
-40oC to +85oC 16 QSOP
MAX5457EEE+
-40oC to +85oC 16 QSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
Note: For leaded version, contact factory.
Pin Configurations
TOP VIEW
+
DN/BAL0 1
UP/BAL1 2
MODE 3
MODE_IND 4
H0 5
MAX5457
L0 6
W0 7
SHDN 8
QSOP
16 VDD
15 VLOGIC
14 GND
13 VSS
12 H1
11 L1
10 W1
9 MUTE
Pin Configurations are continued at end of data sheet.
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.
19-3490; Rev 2; 8/12
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