TS421-2 STMicroelectronics, TS421-2 Datasheet - Page 29

• Manufacturer Part Number: TS421-2
• Description: 360mW MONO AMPLIFIER WITH STANDBY MODE
• Manufacturer: STMicroelectronics

Fig. 98 : Differential Input Amplifier
Configuration
Input capacitance C can be calculated by the
following formula using the -3dB lower frequency
required. (F
L
is the lower frequency required)
C
2
R
1
1
F
L
(
F
)
Note : This formula is true only if:
is ten times lower than F
The following bill of material is an example of a
differential amplifier with a gain of 2 and a -3dB
lower cuttoff frequency of about 80Hz.
Components :
R1
R2
C
C
U1
B
=C
S
Designator
F
CB
942000
L
1
.
TS419/21
20k / 1%
20k / 1%
100nF
1µF
C
B
Part Type
TS419-TS421
(
Hz
)
29/32