mm1336 Mitsumi Electronics, Corp., mm1336 Datasheet

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mm1336

Manufacturer Part Number
mm1336
Description
Ic For Headphone Stereos With Volume-limiting Circuit
Manufacturer
Mitsumi Electronics, Corp.
Datasheet
MITSUMI
Outline
Features
Package
Pin Assignment
Absolute Maximum Ratings
This IC was developed for use in 3V headphone stereos. In addition to the basic functions required by
headphone stereos, it incorporates a circuit for limiting volume. In some parts of Europe hearing impairment
caused by the high volumes of headphone stereos has become a problem, and there has been strong
demand for functions for limiting loud volumes in the sets themselves. This trend is expected to gain
momentum in the U.S. as well.
This IC uses an internal ALC circuit to suppress headphone stereo output, avoiding the above problem.
1. Configuration: Pre-and power amps, ALC circuit, motor control
2. Internal tape selector: A selector switch allows the user to select between normal and metal tapes.
3. Internal OCL circuit: There is no need for a capacitor for high-volume output, so sets can be kept thin.
4. With preamp off pin while connected to radio
5. Designed for low shock noise
SOP - 28B (MM1336CF, MM1336DF)
Reduced noise occuring when the power supply is turned on and off
IC for Headphone Stereos (with volume-limiting circuit)
Monolithic IC MM1336
28
1
27
2
26
3
25
Operating temperature
4 5
Power supply current
Storage temperature
Power consumption
24
23 22
6
SOP-28B
7
Item
21
8
20
9
19
10
11
18
17 16
12
13
15
14
IC for Headphone Stereos (with volume-limiting circuit) MM1336
Symbol
T
T
V
Pd
OPR
STG
CC
10
11
12
13
14
1
2
3
4
5
6
7
8
9
-40~+125
-0.3~+7.5
Ratings
-20~+65
700
PCOUT
POUT1
PHASE
COM1
COM2
GND1
GND2
RECT
AVNF
OUT1
PBU1
PNF1
PIN1
IN1
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Units
mW
°
°
V
C
C
December 19, 1995
Pre OFF
POUT2
GND3
OUT2
PBU2
PNF2
N/M
PIN2
V
V
IN2
VS
RF
CC
CC
C
2
1

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mm1336 Summary of contents

Page 1

... SOP-28B Absolute Maximum Ratings Item Operating temperature Storage temperature Power supply current Power consumption IC for Headphone Stereos (with volume-limiting circuit) MM1336 ...

Page 2

... Output noise voltage Ripple rejection rate Input resistance ALC (on) + power amp Power amp output voltage ALC initiation input voltage ALC width ALC total harmonic distortion Noise of preamp+power amp+ALC IC for Headphone Stereos (with volume-limiting circuit) MM1336 Symbol Ratings T -20~65 OPR V 2.0~5.0 OPR (Except where noted otherwise, Vcc=3V, Ta=25 ...

Page 3

... Reference voltage fluctuation I Reference voltage fluctuation II Reference voltage fluctuation III Output saturation voltage Bridge ratio Bridge ratio fluctuation I Bridge ratio fluctuation II Bridge ratio fluctuation III Block Diagram IC for Headphone Stereos (with volume-limiting circuit) MM1336 Symbol Measurement conditions Id A2 measurement I IMS At Rv=1.5Ω SW1=OFF, I ...

Page 4

... Note: The above characteristics are representative, and are not guaranteed. IC for Headphone Stereos (with volume-limiting circuit) MM1336 GAIN-FREQUENCY NORMAL METAL 1.0 10.0 100.0 1.0k 10.0k 100.0k 1.0x 10.0x Frequency (Hz) MM1336AALC+power amp (26dB Specifications IN OUT R =16Ω ALC OFF 0 ALC ON (ADJUST) ALC ON (max.) ...

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