LAG668 Datasheet, PDF (5/5 Pages) Mitsumi Electronics, Corp. – IC for Headphone Stereos (bass boost)

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