SM6453AB_02 Datasheet, PDF (17/19 Pages) Nippon Precision Circuits Inc – 3-wire Serial Data Volume Control for Headphone Amplifier IC

SM6453AB
30
25
20
15
10
5
0
1.5
GEVR = 0dB
GEVR = –12dB
2.0
2.5
3.0
3.5
4.0
supply voltage:VDD1 [V]
Figure 12. Noise level vs. Supply voltage
100
90
80
BB OFF:CT1
70
60
50
40
BB2:CT3
30
BB1:CT2
20
10
0
1.5
2.0
2.5
3.0
3.5
4.0
supply voltage:VDD1 [V]
Figure 13. Channel separation vs. Supply voltage
30
20
GEVR = 0dB (GO = +12dB)
10
0
GEVR = –20dB (GO = –8dB)
–10
–20
GEVR = –40dB (GO = –28dB)
–30
–40
GEVR = –60dB (GO = –48dB)
–50
–60
GEVR = –80dB (GO = –68dB)
–70
–80
–90
–100
–110
MUTE
–120
–130
1.5
2.0
2.5
3.0
3.5
4.0
supply voltage:VDD1 [V]
Figure 14. Absolute gain vs. Supply voltage
12
2
–8
–18
–28
–38
–48
–58
–68
0
–10 –20 –30 –40 –50 –60 –70 –80
GEVR [dB]
Figure 15. Output voltage gain vs. EVR gain setting
2.0
1.5
1.0
0.5
0.0
–0.5
–1.0
–0.5
–2.0
0
–10 –20 –30 –40 –50 –60 –70 –80
GEVR [dB]
Figure 16. Gain error
15
BB2
14
13
12
11
10
9
8
BB1
7
6
5
1.5
2.0
2.5
3.0
3.5
4.0
supply voltage:VDD1 [V]
Figure 17. Bass boost gain vs. Supply voltage
NIPPON PRECISION CIRCUITS INC.—17