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