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MAX5457ETE+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18
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
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
MAX5456/MAX5457
Stereo Audio Taper Potentiometers
with Pushbutton Interface
EVALUATION KIT AVAILABLE
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.
Ordering Information
19-3490; Rev 2; 8/12
Typical Application Circuits and Selector Guide appear at
end of data sheet.
PART TEMP RANGE PIN-PACKAGE
MAX5456EEE+ -40
o
C to +85
o
C 16 QSOP
MAX5457EEE+ -40
o
C to +85
o
C 16 QSOP
SmartWiper is a trademark of Maxim Integrated Products, Inc.
TOP VIEW
16
15
14
13
12
11
10
9
1
+
2
3
4
5
6
7
8
DN/BAL0
V
DD
V
LOGIC
GND
V
SS
H1
L1
W1
MUTE
MAX5457
QSOP
UP/BAL1
MODE
L0
MODE_IND
H0
W0
SHDN
Pin Configurations
Pin Configurations are continued at end of data sheet.
+
Denotes a lead(Pb)-free/RoHS-compliant package.
Note: For leaded version, contact factory.
Stereo Audio Taper Potentiometers
with Pushbutton Interface
2 Maxim Integrated
MAX5456/MAX5457
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= V
LOGIC
= +2.7V to +5.5V, V
SS
= 0V, GND = 0V, V
H_
= V
DD
, V
L_
= V
SS
, T
A
= T
MIN
to T
MAX
. Typical values are at T
A
= +25°C,
unless otherwise specified.) (Note 1)
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.
(MAX5456) SHDN, MUTE, VOLUP, VOLDN,
BAL_ to GND.....................................-0.3V to (V
LOGIC
+ 0.3V)
(MAX5457) SHDN, MUTE, UP/BAL1, DN/BAL0, MODE,
MODE_IND to GND...........................-0.3V to (V
LOGIC
+ 0.3V)
H_, L_, and W_ to V
SS
..............................-0.3V to (V
DD
+ 0.3 V)
V
DD
to GND..............................................................-0.3V to +6V
V
DD
to V
SS
................................................................-0.3V to +6V
V
LOGIC
to GND.........................................................-0.3V to +6V
V
LOGIC
to V
SS
...........................................................-0.3V to +6V
V
SS
to GND............................................................-3.0V to +0.3V
Peak Current into H_, L_, and W_.......................................±1mA
Average Current into H_, L_, and W_ ..............................±500µA
Input and Output Latchup Immunity...............................±200mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin QSOP (derate 8.3mW/°C above +70°C)........666.7mW
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
Soldering Temperature (reflow) .......................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
End-to-End Resistance R Figures 1, 2 7 10 13 kΩ
Maximum Bandwidth f
CUTOFF
From H_ to W_, C
LOAD
= 10pF 100 kHz
Absolute Ratio Tolerance N o l oad at the outp ut of the w i p er , W _ = - 6d B ±0.25 dB
Tap-to-Tap Tolerance ±0.1 dB
V
DD
= 5V, V
H_
= (V
DD
/ 2) + 1V
RMS
,
f = 1kHz, tap = -6dB, V
L_
= V
DD
/ 2, R
L
= ∞
0.01
Total Harmonic Distortion Plus
Noise
THD+N
V
DD
= 3V, V
SS
= 0V, V
L_
= 1.5V,
V
H_
= 1.5V + 1V
RMS
, f = 1kHz, R
L
= 10kΩ to
(V
DD
/ 2), C
L
= 5pF, tap = -6dB
0.23
%
Channel-to-Channel Isolation -100 dB
Interchannel Matching f = 20Hz to 20kHz, tap = -6dB ±0.5 dB
Mute Attenuation -90 dB
Power-Supply Rejection Ratio PSRR -80 dB
Wiper Resistance R
W
1000 1700 Ω
Wiper Capacitance C
W
10 pF
H Terminal Capacitance C
H
5pF
L Terminal Capacitance C
L
7pF
End-to-End Resistance
Temperature Coefficient
50 ppm/°C
Ratiometric Resistance
Temperature Coefficient
5 ppm/°C
Output Noise e
n
20Hz to 20kHz 0.95 µV
RMS
PUSHBUTTON CONTACT INPUTS (UP/BAL1, DN/BAL0, MUTE, VOLUP, VOLDN, BAL0, BAL1, MODE)
Internal Pullup Resistor R
PULLUP
32 50 65 kΩ
Single Pulse-Width Input t
lPW
Figure 5 22.5 ms
Repetitive Input Pulse High Time t
HPW
Figure 5 40 ms
Timeout Period t
WS
Click/pop suppression inactive 32 ms
Stereo Audio Taper Potentiometers
with Pushbutton Interface
Maxim Integrated 3
MAX5456/MAX5457
Note 1: Parameters are 100% production tested at +85°C and limits through temperature are guaranteed by design.
Note 2: Supply current measured with the supply on and a button pushed.
Note 3: Supply current measured with the power on, no button pushed, and the wiper position fixed.
Note 4: This is the measured current with SHDN low and MODE_IND unconnected.
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= V
LOGIC
= +2.7V to +5.5V, V
SS
= 0V, GND = 0V, V
H_
= V
DD
, V
L_
= V
SS
, T
A
= T
MIN
to T
MAX
. Typical values are at T
A
= +25°C,
unless otherwise specified.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
First Autoincrement Point 1 s
First Autoincrement Rate 4Hz
Second Autoincrement Point 4s
Second Autoincrement Rate 16 Hz
DIGITAL INPUTS (V
LOGIC
> 4.5V)
Input High Voltage V
IH
2.4 V
Input Low Voltage V
IL
0.8 V
Input Leakage Current Inputs floating ±1 µA
Input Capacitance 5pF
DIGITAL INPUTS (V
LOGIC
< 4.5V)
Input High Voltage V
IH
0.7 x
V
L OGIC
V
Input Low Voltage V
IL
0.3 x
V
L OGIC
V
Input Leakage Current Inputs floating ±1 µA
Input Capacitance 5pF
POWER SUPPLIES
Supply Voltage V
DD
2.7 5.5 V
Negative Power Supply V
SS
-2.7 0 V
Supply-Voltage Difference V
DD
- V
SS
5.5 V
Active Supply Current I
DD
(Note 2) 100 µA
V
D D
= + 5.5V , V
S S
= 0V , V
LOGIC
= 2.7V ( N ote 3) 2 10
Standby Supply Current I
STBY
V
LOGIC
= V
DD
= +2.7V, V
SS
= -2.7V (Note 3) 0.5 1
µA
Shutdown Supply Current I
SHDN
(Note 4) 1 µA
Power-Up Time t
PU
10 ms
Logic Standby Voltage V
LOGIC
2.7 V
DD
V
Logic Active Supply Current I
LOGIC
(Note 2) 160 µA
Logic Standby Supply Current I
LOGICSTBY
(Note 3) 0.5 1 µA
Logic Shutdown Current I
LOGICSHDN
(Note 4) 1 µA
DIGITAL OUTPUT, MODE_IND
V
LOGIC
= 2.7V, I
SINK
= 10mA 0.4
Output Low Voltage V
OL
V
LOGIC
= 5.5V, I
SINK
= 10mA 0.2
V
Output Leakage Current 0.1 10 µA
Output Capacitance 3pF
Maximum Sink Current 150 mA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18

MAX5457ETE+T

Mfr. #:
Buy MAX5457ETE+T
Manufacturer:
Maxim Integrated
Description:
Digital Potentiometer ICs Stereo Audio Taper w/Pushbutton Int
Lifecycle:
New from this manufacturer.
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