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Part: MAX5408
Category:
Analog & Mixed-Signal Processing
-> Potentiometers
-> Digital Potentiometers
Description: MAX5408, MAX5409, MAX5410, MAX5411 Dual-Audio, Log Taper Digital Potentiometers
Company: Maxim Integrated Products
Datasheet: Download MAX5408 datasheet File size : 514 kB
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Datasheet text preview:
19-2049; Rev 2; 9/02
Dual, Audio, Log Taper Digital Potentiometers
General Description
The MAX5408MAX5411 dual, logarithmic taper digital p o t e n t i o m e t e r s , with 32-tap points each, replace mechanical potentiometers in audio applications requiri n g digitally controlled resistors. The MAX5408/ MAX5410 are dual potentiometers with one wiper per potentiometer. The MAX5409/MAX5411 are dual potent i o m e t e r s with two wipers per potentiometer (see Functional Diagram). An SPITM-compatible serial interf a c e controls the wiper positions. The MAX5408 MAX5411 have a factory-set resistance of 10k per p o t e n t i o m e t e r . A zero-crossing detect feature minimizes the audible noise generated by wiper transitions. T h e MAX5408MAX5411 have nominal temperature c o e f f i c i e n t s of 35ppm/°C end-to-end and 5ppm/°C ratiometric. The MAX5408MAX5411 are available in 16-pin QSOP and 16-pin thin QFN packages and are specified over the extended temperature range (-40°C to +85°C). o 32-Tap Positions for Each Wiper o Small 16-Pin QSOP/QFN Packages o Single-Supply Voltage Operation +2.7V to +3.6V (MAX5408/MAX5409) +4.5V to +5.5V (MAX5410/MAX5411) o Low 0.5µA Standby Supply Current o Zero-Crossing Detection for Clickless Switching o Mute Function to -90dB o 10k Fixed Resistance Value o 3-Wire SPI-Compatible Serial Data Interface o Power-On Reset: Wiper Goes to Maximum Attenuation o Digital Output for Readback and Daisy-Chaining Capabilities
Features
o Log Taper with 2dB Steps Between Taps
MAX5408MAX5411
Applications
Stereo Volume Control Fading and Balancing Stereo Signals Mechanical Potentiometer Replacement
Ordering Information
PART TEMP RANGE PINPACKAGE WIPERS PER RESISTOR 1 1 2
MAX5408EEE -40°C to +85°C 16 QSOP MAX5408ETE -40°C to +85°C 16 Thin QFN
Functional Diagram appears at end of data sheet. SPI is a trademark of Motorola, Inc.
MAX5409EEE -40°C to +85°C 16 QSOP
Ordering Information continued at end of data sheet.
Pin Configurations
TOP VIEW
DIN 16
DOUT 1 DIN 2 SCLK 3 CS 4 H0 5 L0 6 W0A 7 N.C. (W0B) 8 16 VDD 15 VLOGIC 14 GND DOUT VDD VLOGIC
15
14
13
SCLK
1
12
GND
MAX5408MAX5411
13 AGND 12 H1 11 L1 10 W1A 9 N.C. (W1B)
CS
2
11
AGND
MAX5408MAX5411
H0 3 10 H1
L0
4 5
9
L1
QSOP (5mm x 6mm)
( ) ARE FOR MAX5409/MAX5411 ONLY
6
7
8
W1A
W0A N.C. (W0B) N.C. (W1B)
THIN QFN (4mm x 4mm)
________________________________________________________________ Maxim Integrated Products
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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.
Dual, Audio, Log Taper Digital Potentiometers MAX5408MAX5411
ABSOLUTE MAXIMUM RATINGS
VDD, VLOGIC, CS, SCLK, DIN to GND ....-0.3V to +6V H_, L_, and W_ to GND ......-0.3V to (VDD + 0.3V) DOUT to GND............-0.3V to (VDD + 0.3V) AGND to GND .......-0.3V to +0.3V Input and Output Latchup Immunity.......±200mA Maximum Continuous Current into H_, L_, and W_.........±500µA Continuous Power Dissipation (TA = +70°C) 16-Pin QSOP (derate 8.3mW/°C above +70°C)........666.7mW 16-Pin QFN (derate 18.5mW/°C above +70°C) .........1481mW Operating Temperature Range ...-40°C to +85°C Storage Temperature Range .....-60°C to +150°C Maximum Junction Temperature ....+150°C Lead Temperature (soldering, 10s) .........+300°C
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.
ELECTRICAL CHARACTERISTICS
(VDD = +2.7V to +3.6V (MAX5408/MAX5409), VDD = +4.5V to +5.5V (MAX5410/MAX5411), VH_ = VDD, VL_ = 0, TA = TMIN to TMAX. Typical values are at TA = +25°C, unless otherwise specified.)
PARAMETER End-to-End Resistance Maximum Bandwidth Absolute Tolerance Tap-to-Tap Tolerance Total Harmonic Distortion + Noise Channel Isolation Interchannel Matching Mute Attenuation Power-Supply Rejection Ratio Wiper Resistance Wiper Capacitance Digital Clock Feedthrough End-to-End Resistance Temperature Coefficient Ratiometric Resistance Temperature Coefficient DIGITAL INPUTS (VLOGIC > 4.5V) Input High Voltage Input Low Voltage Input Leakage Current Input Capacitance DIGITAL INPUTS (VLOGIC < 4.5V) Input High Voltage Input Low Voltage Input Leakage Current Input Capacitance 5 VIH VIL 0.7 x VLOGIC 0. 3 x VLOGIC ±1 V V µA pF 5 VIH VIL 2.4 0.8 ±1 V V µA pF PSRR RW CW fSCLK = 20Hz to 20kHz, tap = -6dB f = 20Hz to 20kHz, tap = -6dB THD+N VIN = 1VRMS, f = 1kHz, tap = -6dB (Note 1) CW_ = 50pF SYMBOL CONDITIONS MIN 7 100 ±0.25 ±0.1 0.002 -100 ±0.5 -90 -80 1000 10 -90 35 5 1700 TYP 10 MAX 13 UNITS k kHz dB dB % dB dB dB dB pF dB ppm/°C ppm/°C
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Dual, Audio, Log Taper Digital Potentiometers
ELECTRICAL CHARACTERISTICS (continued)
(VDD = +2.7V to +3.6V (MAX5408/MAX5409), VDD = +4.5V to +5.5V (MAX5410/MAX5411), VH_ = VDD, VL_ = 0, TA = TMIN to TMAX. Typical values are at TA = +25°C, unless otherwise specified.)
PARAMETER DIGITAL OUTPUT Output High Voltage Output Low Voltage SCLK Clock Period SCLK Pulse Width High SCLK Pulse Width Low CS Fall to SCLK Rise Setup Time SCLK Rise to CS Rise Hold Time DIN Setup Time DIN Hold Time SCLK Fall to DOUT Valid Propagation Delay CS Rise to SCLK Rise Hold Time CS Pulse Width High Wiper Settling Time POWER SUPPLIES Supply Voltage Active Supply Current Standby Supply Current Logic Supply Voltage Logic Active Supply Current Logic Standby Supply Current VDD IDD V LOGIC IL O G I C fSCLK = 2MHz, DOUT = floating (Note 2) DOUT = floating (Note 3) 0.5 MAX5408/MAX5409 MAX5410/MAX5411 fSCLK = 2MHz (Note 2) (Note 3) 2.7 0.2 2.7 4.5 3.6 5.5 100 10 5.5 120 10 V µA V µA VOH VOL tCP tCH tCL tCSS tCSH tDS tDH tDO tCS1 tCSW tIW Zero-crossing detect disabled CLOAD = 200pF 40 100 1 ISOURCE = 0.5mA ISINK = 2mA 100 40 40 40 0 40 0 80 VLOGIC - 0.5 0.4 V V ns ns ns ns ns ns ns ns ns ns µs SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX5408MAX5411
TIMING CHARACTERISTICS (Figure 1)
Note 1: Guaranteed by design, not production tested. Note 2: Supply current measured while changing wiper position with zero crossing enabled. Note 3: Supply current measured while wiper position is fixed.
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