STEVAL-CCA003V1 STMicroelectronics, STEVAL-CCA003V1 Datasheet - Page 24
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STEVAL-CCA003V1
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
STEVAL-CCA003V1
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
TS4984
4.9 Application example: Differential-input BTL power stereo amplifier
The schematic in
discussion, only the left-channel amplifier will be referred to.
Let:
The gain of the amplifier is:
In order to reach the optimal performance of the differential function, R
maximum.
Figure 69: Differential input amplifier configuration
24/29
R
C
1R
inR
= R
= C
2L
Pos. Input RIGHT
Neg. Input RIGHT
Neg. Input LEFT
Pos. Input LEFT
inL
= R
= C
Figure 69
1
, R
in
CinL
CinL
CinR
CinR
2R
= R
StandBy
Control
shows how to design the TS4984 to work in differential-input mode. For this
2L
R1L
R1R
R1R
R1L
R2L
R2R
= R
2
Cb
R2R
BypassR
StandBy
BypassL
R2L
IN-L
IN+L
IN+R
IN-R
G vdif = 2
+
-
+
-
Bias
VCC
×
R2
-------
R1
-
+
-
+
AV = -1
AV = -1
1
VO+R
VO-R
VO+L
VO-L
and R
TS4984
Application Information
2
should be matched at 1%
LEFT Speaker
8 Ohms
RIGHT Speaker
8 Ohms
Cs