TS2012FC View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
TS2012FC Datasheet PDF : 31 Pages
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TS2012FC
Application information
Figure 39. Typical application for single-ended input configuration
VCC
Cs 2
0.1uF
VCC
Cs 1
1uF
Left Input
Cin
Cin
Right Input
Cin
Cin
Gain Select
Control
TS2012
A1 Lin+
B1 Lin-
Gain
Select
C2 G0
B2 G1
AVC C
PWM
Osci llator
D1 Rin+
C1 Rin-
Gain
Select
PWM
B4 STBYL
B3 STBYR
Standby
Control
Protection
Circuit
AGN D
Standby Control
PVC C
Lout+ A3
H
Bridge Lout- A4
Rout+ D3
H
Bridge Rout- D4
PGN D
Left speaker
Right speaker
4.9
Output filter considerations
The TS2012 is designed to operate without an output filter. However, due to very sharp
transients on the TS2012 output, EMI radiated emissions may cause some standard
compliance issues.
These EMI standard compliance issues can appear if the distance between the TS2012
outputs and loudspeaker terminal are long (typically more than 50 mm, or 100 mm in both
directions, to the speaker terminals). Because the PCB layout and internal equipment
device are different for each configuration, it is difficult to provide a one-size-fits-all solution.
However, to decrease the probability of EMI issues, there are several simple rules to follow:
● Reduce, as much as possible, the distance between the TS2012 output pins and the
speaker terminals.
● Use a ground plane for “shielding” sensitive wires.
● Place, as close as possible to the TS2012 and in series with each output, a ferrite bead
with a rated current of minimum 2.5A and impedance greater than 50Ω at frequencies
above 30MHz. If, after testing, these ferrite beads are not necessary, replace them by a
short-circuit.
● Allow extra footprint to place, if necessary, a capacitor to short perturbations to ground
(see Figure 40).
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