TS4984FC View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TS4984FC' PDF : 30 Pages View PDF
Application Information
4 Application Information
TS4984FC
The TS4984 integrates two monolithic power amplifiers with a BTL (Bridge Tied Load) output
type (explained in more detail in Section 4.1). For this discussion, only the left-channel amplifier
will be referred to.
Referring to the schematic in Figure 62, we assign the following variables and values:
Vin = Vin1-
Vout1 = VOUT1+
Vout2 = VOUT1-
Rin = Rin1
Rfeed = Rfeed1
Cfeed = Cfeed1
Figure 62. Typical application schematic - left channel
Cfeed = Cfeed1
Rfeed = Rfeed1
VCC
Cs
1u
IN1
2
GND 1
Cin = Cin1
Vin- = VIN1-
-
Rin = Rin1
Vin+ = VIN1+ +
STDBY
Bias
BYPASS
Cb
1u
TS4984
-
AV = -1
+
Vout1 = VOUT1+
RL
Vout2 = VOUT1-
4.1 BTL configuration principle
BTL (Bridge Tied Load) means that each end of the load is connected to two single-ended
output amplifiers. Thus, we have:
Single-ended output 1 = Vout1 = Vout (V),
Single-ended output 2 = Vout2 = -Vout (V), Vout1 - Vout2 = 2Vout (V)
18/30
Share Link: 
