TS4890 ST Microelectronics, Inc., TS4890 Datasheet - Page 8

• Manufacturer Part Number: TS4890
• Description: 1W Mono Audio Amplifier With Standby Active High
• Manufacturer: ST Microelectronics, Inc.

TS4890
Fig. 13 : Power Supply Rejection Ratio (PSRR)
vs Power supply
Fig. 15 : Power Supply Rejection Ratio (PSRR)
vs Bypass Capacitor
Fig. 17 : Power Supply Rejection Ratio (PSRR)
vs Feedback Resistor
8/32
-10
-20
-30
-40
-50
-60
-70
-80
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
-70
-80
10
10
10
Vripple = 200mVrms
Rfeed = 22k
Input = floating
RL = 8
Tamb = 25 C
Vcc = 5 to 2.2V
Cb = 1 F & 0.1 F
Vripple = 200mVrms
Input = floating
RL = 8
Tamb = 25 C
Cb=100 F
Vcc = 5V to 2.2V
Cb = 1 F & 0.1 F
Cb=1 F
100
100
100
Cb=10 F
Frequency (Hz)
Frequency (Hz)
Frequency (Hz)
Rfeed=110k
1000
1000
1000
Rfeed=47k
Vcc = 5 to 2.2V
Rfeed = 22k
Rin = 22k, Cin = 1 F
Rg = 100 , RL = 8
Tamb = 25 C
Cb=47 F
10000
10000
10000
Rfeed=10k
Rfeed=22k
100000
100000
100000
vs Feedback Capacitor
Fig. 16 : Power Supply Rejection Ratio (PSRR)
vs Input Capacitor
Fig. 18 : Pout @ THD + N = 1% vs Supply
Voltage vs RL
Fig. 14 : Power Supply Rejection Ratio (PSRR)
-10
-20
-30
-40
-50
-60
-70
-80
-10
-20
-30
-40
-50
-60
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
10
10
2.5
Vcc = 5 to 2.2V
Cb = 1 F & 0.1 F
Rfeed = 22k
Vripple = 200mVrms
Input = floating
RL = 8
Tamb = 25 C
Gv = 2 & 10
Cb = 1 F
F = 1kHz
BW < 125kHz
Tamb = 25 C
Cin=1 F
Cin=22nF
Cin=330nF
Cin=100nF
3.0
100
100
Cin=220nF
Frequency (Hz)
Frequency (Hz)
3.5
1000
1000
Vcc (V)
Cfeed=330pF
4
Cfeed=150pF
Cfeed=680pF
Vcc = 5 to 2.2V
Rfeed = 22k, Rin = 22k
Cb = 1 F
Rg = 100 , RL = 8
Tamb = 25 C
4.0
Cfeed=0
10000
10000
6
4.5
32
8
16
100000
100000
5.0