TS4994EIKJT STMICROELECTRONICS [STMicroelectronics], TS4994EIKJT Datasheet - Page 28

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

Application information
4.7
28/35
Figure 94. CMRR vs. frequency (worst case
Figure 96. CMRR vs. frequency with random
-10
-20
-30
-40
-50
-60
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
20
20
Vcc = 5V
Vic = 200mVpp
Av = 1, Cin = 470 μ F
Δ R/R = 0.1%, RL ≥ 8 Ω
Tamb = 25 ° C
Vcc = 5V
Vic = 200mVpp
Av = 1, Cin = 470 μ F
Δ R/R ≤ 0.1%, RL ≥ 8 Ω
Tamb = 25 ° C
Figure 96
random selection of four
Power dissipation and efficiency
Assumptions:
●
●
The output voltage is:
and
conditions)
selection condition
100
100
Load voltage and current are sinusoidal (V
Supply voltage is a pure DC source (V
and
Frequency (Hz)
Frequency (Hz)
Cb=1 μ F
Cb=0
Cb=1 μ F
Cb=0
Figure 97
1000
1000
show CMRR versus frequency for a typical application with a
Δ
R/R values with a 0.1% tolerance.
10000
10000
20k
20k
V
out
I
Figure 95. CMRR vs. frequency (worst case
Figure 97. CMRR vs. frequency with random
out
= V peak sinωt (V)
CC
=
V
------------ - (A)
)
R
-10
-20
-30
-40
-50
-60
-10
-20
-30
-40
-50
-60
-70
-80
-90
out
out
0
0
L
20
20
and I
Vcc = 2.5V
Vic = 200mVpp
Av = 1, Cin = 470 μ F
Δ R/R = 0.1%, RL ≥ 8 Ω
Tamb = 25 ° C
Vcc = 2.5V
Vic = 200mVpp
Av = 1, Cin = 470 μ F
Δ R/R ≤ 0.1%, RL ≥ 8 Ω
Tamb = 25 ° C
conditions)
selection condition
out
100
100
)
Frequency (Hz)
Frequency (Hz)
Cb=1 μ F
Cb=0
Cb=1 μ F
Cb=0
1000
1000
10000
10000
TS4994FC
20k
20k