TS487 STMICROELECTRONICS [STMicroelectronics], TS487 Datasheet - Page 17

• Manufacturer Part Number: TS487
• Description: 100mW STEREO HEADPHONE AMPLIFIER WITH STANDBY MODE
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Fig. 49: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
Fig. 51: PSRR vs Power Supply Voltage
Fig. 53: PSRR vs Input Capacitor
-10
-20
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
-70
104
102
100
0
0
98
96
94
92
90
2.0
Av = -1
Cb = 1 F
THD+N < 0.4%
Tamb = 25 C
Vcc = 5V, 3.3V & 2.5V
100
100
Cin = 1 F, 220nF
2.5
Vripple = 200mVpp
Av = -1
Input = grounded
Cb = 1 F
RL >= 16
Tamb = 25 C
Cin = 100nF
Power Supply Voltage (V)
RL=16
3.0
1000
1000
Frequency (Hz)
Frequency (Hz)
3.5
RL=600
Vripple = 200mVpp
Av = -1, Vcc = 5V
Input = grounded
Cb = 1 F, Rin = 20k
RL >= 16
Tamb = 25 C
Vcc = 2V
10000
10000
4.0
RL=32
4.5
100000
100000
5.0
Fig. 50: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
Fig. 52: PSRR vs Bypass Capacitor
Fig. 54: PSRR vs Output Capacitor
-10
-20
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
-70
-80
104
102
100
0
0
98
96
94
92
90
2.0
Av = -1
Cb = 1 F
THD+N < 0.4%
Tamb = 25 C
Cb = 4.7 F
100
100
Cout = 470 F
Cout = 220 F
2.5
Vripple = 200mVpp
Av = -1
Input = grounded
Vcc = 5V
RL >= 16
Tamb = 25 C
RL=16
Power Supply Voltage (V)
3.0
1000
1000
Frequency (Hz)
Frequency (Hz)
RL=600
Cb = 2.2 F
Cb = 1 F
3.5
Vripple = 200mVpp
Av = -1, Vcc = 5V
Input = grounded
Cb = 1 F, RL = 16
RL >= 16
Tamb = 25 C
10000
10000
RL=32
4.0
TS486-TS487
4.5
100000
100000
5.0
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