TS487 STMICROELECTRONICS [STMicroelectronics], TS487 Datasheet - Page 25

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

Fig. 93: Crosstalk vs Frequency
Fig. 95: Crosstalk vs Frequency
Fig. 97: Signal to Noise Ratio vs Power Supply
Voltage with Weighted Filter Type A
80
60
40
20
80
60
40
20
100
0
0
98
96
94
92
90
88
86
84
82
80
20
20
2.0
Av = -4
Cb = 1 F
THD+N < 0.4%
Tamb = 25 C
ChB to ChA
ChB to ChA
2.5
100
100
ChA to ChB
ChA to ChB
Power Supply Voltage (V)
RL=16
3.0
Frequency (Hz)
Frequency (Hz)
RL=600
3.5
1000
1000
4.0
RL=32
RL=16
Vcc=2V
Pout=7.5mW
Av=-4
Cb = 1 F
Bw < 125kHz
Tamb=25 C
RL=32
Vcc=2V
Pout=6mW
Av=-4
Cb = 1 F
Bw < 125kHz
Tamb=25 C
4.5
10000
10000
20k
20k
5.0
Fig. 94: Crosstalk vs Frequency
Fig. 96: Signal to Noise Ratio vs Power Supply
Voltage with Unweighted Filter (20Hz to 20kHz)
Fig. 98: PSRR vs Power Supply Voltage
-10
-20
-30
-40
-50
-60
80
60
40
20
0
0
100
20
98
96
94
92
90
88
86
84
82
80
2.0
Vcc = 5V, 3.3V & 2.5V
100
Av = -4
Cb = 1 F
THD+N < 0.4%
Tamb = 25 C
Vripple = 200mVpp
Av = -4
Input = grounded
Cb = 1 F
RL >= 16
Tamb = 25 C
2.5
100
ChB to ChA
Power Supply Voltage (V)
RL=16
3.0
1000
Frequency (Hz)
Frequency (Hz)
ChA to ChB
RL=600
3.5
1000
Vcc = 2V
10000
4.0
TS486-TS487
RL=32
RL=32
Vcc=5V
Pout=55mW
Av=-4
Cb = 1 F
Bw < 125kHz
Tamb=25 C
10000
4.5
100000
20k
5.0
25/31