STEVAL-CCA003V1 STMicroelectronics, STEVAL-CCA003V1 Datasheet - Page 18

• Manufacturer Part Number: STEVAL-CCA003V1
• Description: BOARD EVAL FOR LV TS4984IQT
• Manufacturer: STMicroelectronics

Specifications of STEVAL-CCA003V1

• Design Resources: STEVAL-CCA003V1 Gerber Files
• Amplifier Type: Class AB
• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 1W x 2 @ 8 Ohm
• Voltage - Supply: 2.2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: TS4984
• Description/function: Audio Amplifiers
• Operating Supply Voltage: 2.2 V to 5.5 V
• Output Power: 1 W
• Product: Audio Modules
• Silicon Manufacturer: ST Micro
• Silicon Core Number: TS4984
• Kit Application Type: Amplifier
• Application Sub Type: Stereo Audio Power Amplifier
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: TS4984
• Other names: 497-6396; STEVAL-CCA003V1

TS4984
4 Application Information
The TS4984 integrates two monolithic power amplifiers with a BTL (Bridge Tied Load) output type
(explained in more detail in
referred to.
Referring to the schematic in
Figure 64: Typical application schematic - left channel
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:
The output power is:
For the same power supply voltage, the output power in a BTL configuration is four times higher than the
output power in a single-ended configuration.
18/29
V
V
R
C
Single-ended output 1 = V
Single-ended output 2 = V
in
out1
in
feed
= IN-L
= Rin-L, R
= VO
= Cfeed-L
-
L, V
feed
out2
Input L
= Rfeed-L
GND
= VO+R
Cin = Cin-L
Figure
Section
out1
out2
Rin = Rin-L
= V
= -V
64, we assign the following variables and values:
out
4.1). For this discussion, only the left-channel amplifier will be
out
P
Vin-
Vin+
Cb
1u
(V),
out
(V), V
Standby
=
=
Bypass
IN-L
IN+L
=
out1
(
------------------------------------ -
2V
-
+
Bias
- V
outRMS
R
VCC
out2
L
= 2V
)
-
+
AV = -1
2
out
Cs
1u
TS4984
Cfeed = Cfeed-L
Rfeed = Rfeed-L
(V)
Vout 1
Vout 2
=
=
VO-L
Application Information
VO+L
RL