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PDF LAG668D Data sheet ( Hoja de datos )
| Número de pieza | LAG668D | |
| Descripción | IC for Headphone Stereos (bass boost) | |
| Fabricantes | ETC | |
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MITSUMI
IC for Headphone Stereos (bass boost) LAG668
IC for Headphone Stereos (bass boost)
Monolithic IC LAG 668
Outline
This IC was developed to provide bass boost functions without deviating from the basic design concept of
Mitsumi's LAG665, which is highly regarded for applications in headphone stereos for overseas markets in
particular.
Bass boost functions are widely adopted in models for overseas markets as well. However, because of
stringent cost constraints, there has been a need for an IC which is simple and inexpensive. This IC can
provide bass boost functions simply by adding three resistors and one capacitor (per channel).
Moreover, it has the same pinout as the LAG665, so that by making selective use of set features, a product
lineup can be developed without changes to the printed circuit board.
Features
1. Configuration: pre and power amps, motor control, E. VR, bass boost
2. Preamp off function convenient for use in models with radios
3. Independent motor control circuit
1. Motor noise is effectively suppressed
2. With motor on/off pin (motor can be stopped easily when radio is in use)
3. With fast forward pin
4. Bass boost frequency characteristic can be changed simply by changing the resistance multiplier.
5. Well-balanced E. VR circuit
1. L, R channels variable using a single VR
2. A-curve can be reproduced using B-curve VR
6. Few external components
Package
SOP-28B (LAG668F)
SDIP-30A (LAG668D)
Absolute Maximum Ratings
Item
Operating temperature
Storage temperature
Power supply current
Power consumption
Operating voltage
Symbol
TOPR
TSTG
VCC max.
Pd
Vop
Ratings
-20~+65
-40~+125
-0.3~+7.5
DIP : 750, SOP : 450
+2.0~+5.0
Units
°C
°C
V
mW
V
1 page  
MITSUMI
IC for Headphone Stereos (bass boost) LAG668
Characteristics (Bass boost)
Recommended constants
40
35
30
25
20
15
101
102 103 104 105
Frequency (Hz)
R1=33kΩ GVH=37dB
R2=4.7kΩ GVL=20dB
R3=180kΩ f1=50Hz
C=0.1µF f2=340Hz
No R4 or C2
106
Bass boost efficiency
40
35
30
25
20
15
101
102 103 104 105
Frequency (Hz)
R1=12kΩ GVH=37dB
R2=2.2kΩ GVL=20dB
R3=180kΩ f1=130Hz
C=0.1µF f2=720Hz
No R4 or C2
106
Response for poor headphone and cassette head characteristics
40
35
30
25
20
15
101
102 103 104 105
Frequency (Hz)
R1=33kΩ GVH=37dB
R2=6.8kΩ GVL=23dB
R3=180kΩ f1=50Hz
C=0.1µF f2=230Hz
No R4 or C2
106
Bass + treble boost
40
35
30
25
20
15
101
102 103 104 105
Frequency (Hz)
R1=33kΩ GVH=37dB
R2=4.7kΩ GVL=20dB
R3=180kΩ f1=50Hz
C=0.1µF f2=340Hz
R4=20kΩ GVH=27dB
C2=390pF
106
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet LAG668D.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LAG668 | IC for Headphone Stereos (bass boost) | ETC |
| LAG668D | IC for Headphone Stereos (bass boost) | ETC |
| LAG668F | IC for Headphone Stereos (bass boost) | ETC |
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