max5407ekat Maxim Integrated Products, Inc., max5407ekat Datasheet

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max5407ekat

Manufacturer Part Number
max5407ekat
Description
Max5407 32-tap Audio Logarithmic Taper Digital Potentiometer
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
The MAX5407 SOT-PoT™ is a logarithmic taper digital
potentiometer with 32 tap points that has 1dB steps
between taps. This device is ideal for audio applica-
tions, such as volume control and fading/balancing
audio signals.
The MAX5407 consists of a resistor string and CMOS
switches that are digitally controlled through a simple 2-
wire serial interface. This device performs the same
function as a mechanical potentiometer. The device
has a fixed end-to-end resistance of 20kΩ and features
zero-crossing detection to minimize the audible noise
generated by the wiper transitions.
This device has nominal resistor temperature coefficients
of 35ppm/°C end-to-end and 5ppm/°C ratiometric. The
MAX5407 is available in a space saving 8-pin SOT23
package and is guaranteed from -40°C to +85°C.
19-2196; Rev 0; 10/01
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.
SOT-PoT is a trademark of Maxim Integrated Products, Inc.
ZCEN
GND
V
U/D
CS
DD
Audio Volume Control
Fading/Balancing Audio Signals
Mechanical Potentiometer Replacement
UP/DOWN
COUNTER
MAX5407
________________________________________________________________ Maxim Integrated Products
General Description
32-POSITION
Functional Diagram
DECODER
Applications
H
L
32-Tap Audio Logarithmic Taper
W
o Miniature 3mm x 3mm 8-Pin SOT23 Package
o Logarithmic Taper with 1dB Steps Between Taps
o 32 Tap Positions
o Low 0.35µA Supply Current
o +2.7V to +5.5V Single-Supply Operation
o Zero-Crossing Detection to Minimize Audible
o Simple Up/Down 2-Wire Serial Data Interface
o Power-On Reset
o 20kΩ End-to-End Resistance
MAX5407EKA
Clicks During Wiper Transitions
Wiper Goes To Maximum Attenuation
(Lowest Tap Position)
Digital Potentiometer
PART
TOP VIEW
TEMP. RANGE
-40°C to +85°C
GND
W
H
L
1
2
3
4
Ordering Information
MAX5407
SOT23
Pin Configuration
PACKAGE
8 SOT23
PIN-
7
5
8
6
ZCEN
V
CS
U/D
DD
Features
TOP MARK
AAID
1

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max5407ekat Summary of contents

Page 1

... UP/DOWN 32-POSITION U/D COUNTER DECODER ZCEN SOT-PoT 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. 32-Tap Audio Logarithmic Taper Digital Potentiometer o Miniature 3mm x 3mm 8-Pin SOT23 Package ...

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Audio Logarithmic Taper Digital Potentiometer ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0. CS, ZCEN, and U/D to GND .........-0. Input and Output Latchup Immunity...............................±200mA Maximum Continuous Current into H, L, and ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V (Note 1) PARAMETER SYMBOL POWER SUPPLIES Supply Voltage Supply Current Note 1: All devices are 100% production tested at T ...

Page 4

Audio Logarithmic Taper 32-Tap Audio Logarithmic Taper Digital Potentiometer Digital Potentiometer (V = +5V +25°C, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE 0.50 0.45 0. +5V DD 0.35 0.30 0.25 0. ...

Page 5

U/D W NOTE NOT A DIGITAL SIGNAL. IT REPRESENTS THE WIPER TRANSITIONING. Figure 1. Serial Interface Timing Diagram, Increment Mode U/D W NOTE NOT A DIGITAL SIGNAL. IT REPRESENTS THE ...

Page 6

Audio Logarithmic Taper Digital Potentiometer Power-On Reset The power-on reset feature sets the wiper to the maxi- mum attenuation (tap position 31, -31dB) at power-up initially high, the MAX5407 is in the increment mode by default. ...

Page 7

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. Maxim ...

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