TS4994EIKJT STMICROELECTRONICS [STMicroelectronics], TS4994EIKJT Datasheet - Page 26

• Manufacturer Part Number: TS4994EIKJT
• Description: 1.2 W differential input/output audio power amplifier with selectable standby
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Application information
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Figure 89. PSRR vs. frequency (worst case
Figure 91. PSRR vs. frequency (worst case
-100
-110
-120
-130
-140
-100
-110
-120
-130
-140
-10
-20
-30
-40
-50
-60
-70
-80
-90
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
20
20
Vcc = 5V, Vripple = 200mVpp
Av = 1, Cin = 4.7 μ F
Δ R/R = 0.1%, RL ≥ 8 Ω
Tamb = 25 ° C, Inputs = Grounded
Vcc = 2.5V, Vripple = 200mVpp
Av = 1, Cin = 4.7 μ F
Δ R/R = 0.1%, RL ≥ 8 Ω
Tamb = 25 ° C, Inputs = Grounded
The three following graphs show PSRR versus frequency and versus bypass capacitor C
worst-case conditions (
conditions)
conditions)
Cb=1 μ F
Cb=1 μ F
100
100
Cb=0.1 μ F
Cb=0.1 μ F
Cb=0.47 μ F
Cb=0.47 μ F
Frequency (Hz)
Frequency (Hz)
1000
1000
Δ
R = 0.1%).
Cb=0
Cb=0
10000
10000
20k
20k
Figure 90. PSRR vs. frequency (worst case
-100
-110
-120
-130
-140
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
20
Vcc = 3.3V, Vripple = 200mVpp
Av = 1, Cin = 4.7 μ F
Δ R/R = 0.1%, RL ≥ 8 Ω
Tamb = 25 ° C, Inputs = Grounded
conditions)
Cb=1 μ F
100
Cb=0.1 μ F
Cb=0.47 μ F
Frequency (Hz)
1000
Cb=0
10000
TS4994FC
20k
b
in