mn6632a Panasonic Corporation of North America, mn6632a Datasheet

mn6632a

Manufacturer Part Number

mn6632a

Description

2-channel Cmos Electronic Volume Control For Audio Applications

Manufacturer

Panasonic Corporation of North America

Datasheet

1.MN6632A.pdf (5 pages)

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For Audio Equipment

MN6632A

2-Channel CMOS Electronic Volume Control for Audio Applications

decrements between 0 and approximately –78 dB, and

OFF state (–100 dB). The resulting volume curve

represents an enhanced version of the A curve.

converts the current volume setting to one of 11 possible

output voltages.

capacitor or battery when the power is turned off. It

automatically resets these settings to –48 dB, however,

the next time that the power is applied if the backup

voltage drops below the level required to preserve these

settings.

the adjustment of output volumes with "H" level pulses

to the UP or DOWN pins.

puter.

The MN6632A provides attenuation levels in 1.5 dB

The chip includes a built-in display output function that

The chip permits preserving the volume settings with a

Addition of external resistors and capacitors permits

The STEP pin is also controllable from a microcom-

Attenuation levels: 0 dB to –78 dB, –100dB

curve

Support for both key input and microcomputer control

speed of volume changes

consumption of backup power supply when V

off has been detected

DOWN inputs

Overview

Features

Low-distortion ratio of 0.003% due to R-2R ladder

Volume curve that is an enhanced version of the A

Attenuation decrements of approximately 1.5 dB

Built-in backup function with automatic reset

Built-in display output circuit

Built-in a self-exciting oscillator for determining the

Built-in functions for blocking input and preventing

Built-in function for rejecting simultaneous UP and

Applications

Audio equipment

power

Pin Assignment

VOL OUT1

DISP OUT

VOL IN1

GND1

STEP

N.C.

OUT1

DIP018-P-0300A

(TOP VIEW)

OSC

DOWN

VOL IN2

N.C.

VOL OUT2

GND2

OUT2

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mn6632a Summary of contents

Page 1

... For Audio Equipment MN6632A 2-Channel CMOS Electronic Volume Control for Audio Applications Overview The MN6632A provides attenuation levels in 1.5 dB decrements between 0 and approximately –78 dB, and OFF state (–100 dB). The resulting volume curve represents an enhanced version of the A curve. The chip includes a built-in display output function that converts the current volume setting to one of 11 possible output voltages ...

Page 2

... MN6632A Block diagram DOWN DOWN counter 2 STEP Frequency divider counter 18 Oscillator OSC circuit V CC detection circuit D/A converter Decoder Reset circuit For Audio Equipment 7 VOL OUT1 OUT1 5 VOL IN1 9 GND 1 10 GND 2 14 VOL IN2 11 I OUT2 ...

Page 3

... — MN6632A Function Description Backup power supply pin (+5 V typ.) Pulse input pin for adjusting attenuation level using frequency-divided oscillator output Output pin for driving display Power supply pin (+5 V typ.) Volume input pin for channel 1 Although this pin is not connected to the ...

Page 4

... MN6632A Package Dimensions (Unit: mm) DIP018-P-0300A 21.6±0 2.54 0.5±0 1.2±0.1 SEATING PLANE For Audio Equipment 7.62±0. 15° ...

Page 5

Request for your special attention and precautions in using the technical information and (1) If any of the products or technical information described in this book exported or provided to non-residents, the laws and regulations of the ...

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