BU7150NUV_15 Datasheet, PDF (5/22 Pages) Rohm – Headphone Amplifier Designed for 0.93V Low Voltage Operation

BU7150NUV
Technical Note
140 SE mode
120
100
80
60
THD+N = 10%
40
THD+N = 1%
20
0
0
1
2
3
4
Supply Voltage [V]
Fig. 18 Maxim um output Power vs . Supply Voltage
40
SE mode
35 _{Zoom up}
30
25
20
15
THD+N = 10%
10
THD+N = 1%
5
0
0 .0
0 .5
1 .0
1.5
2 .0
Supply Voltage [V]
Fig. 20 Maxim um output Power vs . Supply Voltage
0
-10
VDD=1.5V, Input=200m V_P-P,
SE m ode, Input Term inated into 10Ω
-20
-30
-40
-50
-60
-70
-80
-90
10
100
1k
10k
Frequency [Hz]
Fig. 22 PSRR vs . Frequency
100k
0
-10
VDD=1.2V, Input=200m V_P-P,
SE m ode, Input Term inated into 10Ω
-20
-30
-40
-50
-60
-70
-80
-90
10
100 _{Freque1nkcy [Hz]} 10k
Fig. 24 PSRR vs . Frequency
100k
1000
900 BTL m ode
800
700
600
500
400
THD+N = 10%
300
200
THD+N = 1%
100
0
0
1
2
3
4
Supply Voltage [V]
Fig. 19 Maxim um output Power vs . Supply Voltage
200
180 ^{BTL m ode}
Zoom up
160
140
120
100
80
60
THD+N = 10% _{× :WC(PO=70m W}
TH D +N =1 % )
40
THD+N = 1%
20
0
0 .0
0.5
1 .0
1.5
2.0
Supply Voltage [V]
Fig. 21 Maxim um output Power vs . Supply Voltage
0
-10
VDD=1.5V, Input=200m V_P-P,
BTL m ode, Input Term inated into 10Ω
-20
-30
-40
-50
-60
-70
-80
-90
10
100
1k
10k
Frequency [Hz]
Fig. 23 PSRR vs . Frequency
100k
0
-10
VDD=1.2V, Input=200m V_P-P,
BTL m ode, Input Term inated into 10Ω
-20
-30
-40
-50
-60
-70
-80
-90
10
100 _{Freque1nkcy [Hz]} 10k
Fig. 25 PSRR vs . Frequency
100k
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5/18
2015.1 - Rev.E