max5440eagt Maxim Integrated Products, Inc., max5440eagt Datasheet
max5440eagt
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max5440eagt Summary of contents
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Rev 1; 5/06 General Description The MAX5440 dual, 40kΩ logarithmic taper volume con- trol features a debounced up/down interface for use with a simple rotary encoder without using a microcon- troller (µC). Each potentiometer has 32 log-spaced tap points ...
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Stereo Volume Control with Rotary Encoder Interface ABSOLUTE MAXIMUM RATINGS SHDN, MUTE, RENCODEA, RENCODEB, and MODE to GND............................-0. H_, L_, and ...............................-0. LEDIND_, MODEIND to GND................-0. MIDBIAS, BIAS to V ...
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ELECTRICAL CHARACTERISTICS (continued) = GND = 0, 2.7V ≤ +2.7V to +5.5V unless otherwise specified. Typical values are at T MAX PARAMETER SYMBOL Power-Supply Rejection Ratio PSRR Maximum Load Output Resistance CONTACT ...
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Stereo Volume Control with Rotary Encoder Interface (T = +25°C, unless otherwise noted.) A ATTENUATION vs. TAP POSITION 0 -10 -20 -30 -40 -50 -60 - TAP POSITION WIPER SWITCHING TRANSIENT ...
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V = +5V +25°C, unless otherwise noted POWER-SUPPLY REJECTION RATIO vs. FREQUENCY - ±100mV DD_ P 2.5V, W_ SET TO -6dB L_ -35 -40 ...
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Stereo Volume Control with Rotary Encoder Interface PIN NAME Digital Logic Power Supply. Bypass LOGIC as possible. Rotary Encoder Input A. With RENCODEB, this input provides the rotary encoder control for the RENCODEA 2 potentiometer (see Figure ...
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Detailed Description The MAX5440 dual, 40kΩ logarithmic taper digital potentiometer features a debounced up/down interface for use with a simple rotary encoder without using a microcontroller. Each potentiometer has 32 log-spaced tap points with a buffered wiper output and replaces ...
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Stereo Volume Control with Rotary Encoder Interface In volume-control mode, the MAX5440’s wipers move simultaneously, maintaining the balance separation between each wiper (Figure 2a). When either wiper reaches the maximum tap position (position closest to H_), further commands to increase ...
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Table 1. Wiper Position and Attenuation POSITION ATTENUATION (dB … 6 (POR) … (MUTE) VOLUME LEVEL IS SET VOLUME LEVEL IS SET Figure 3. Balance-Control Operation ...
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Stereo Volume Control with Rotary Encoder Interface USER ROTATES ENCODER SWITCH CONTACT IS BOUNCING WIPER MOTION Figure 4a. Wiper Transition Timing Diagram—Suppression Circuitry Active 10 ______________________________________________________________________________________ SWITCH CONTACT IS STABLE INPUT ACCEPTED t WS ...
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SWITCH CONTACT IS BOUNCING LPW DEBOUNCE BY WAITING FOR STABLE LOW Figure 4b. Wiper Transition Timing Diagram—Timed Out ______________________________________________________________________________________ Stereo Volume Control with Rotary Encoder Interface SWITCH CONTACT IS STABLE INPUT ACCEPTED ...
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Stereo Volume Control with Rotary Encoder Interface Power-On Reset The power-on comparators monitor ( GND). A power-on reset is initiated when LOGIC either of the supplies is brought back to the normal operating voltage. The power-on reset feature ...
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FULL CCW ROTATION (CH0) LED0 ON LED1 ON Figure 5. LED Setting in Balance Mode V LOGIC Figure 6. Dual-Supply Volume/Balance Control ______________________________________________________________________________________ Stereo Volume Control with Rotary Encoder Interface L + ...
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Stereo Volume Control with Rotary Encoder Interface Multiple Button Pushes ( MODE , MUTE ) The MAX5440 does not respond to simultaneous button pushes. Pushing more than one button at the same time stops the wipers in their present states. ...
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V SHDN LOGIC MAX5440 MUTE L0 GND ______________________________________________________________________________________ Stereo Volume Control with Rotary Encoder Interface MODEIND BIAS MIDBIAS BIAS GENERATOR CLICK-AND-POP CLICK-AND-POP SUPPRESSION SUPPRESSION CIRCUITRY ...
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... SEE VARIATIONS E 0.205 0.212 5.20 e 0.0256 BSC 0.65 BSC H 0.301 0.311 7.65 L 0.025 0.037 0.63 0∞ 8∞ 0∞ Printed USA is a registered trademark of Maxim Integrated Products, Inc. Package Information MAX INCHES MILLIMETERS MIN MAX MIN MAX 1.99 D 0.239 0.249 6.07 6.33 0.21 D 0.239 0.249 6.07 6.33 0.38 D 0.278 0.289 7.07 7.33 ...