DEMOTS4956J STMicroelectronics, DEMOTS4956J Datasheet - Page 41

• Manufacturer Part Number: DEMOTS4956J
• Description: BOARD DEMO TS4956EIJT/EIKJT
• Manufacturer: STMicroelectronics

Specifications of DEMOTS4956J

• Amplifier Type: Class AB
• Output Type: 1-Channel (Mono) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1W x 1 @ 8 Ohm; 43mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: TS4956
• Description/function: Audio Amplifiers
• Operating Supply Voltage: 2.7 V to 5.5 V
• Product: Audio Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: TS4956
• Other names: 497-6381; DEMOTS4956J

TS4956
Note:
4.3.2
Note:
and its value is:
This maximum value depends only on the power supply voltage and load values.
The efficiency is the ratio between the output power and the power supply:
The maximum theoretical value is reached when V
Phantom ground output configuration (modes 3, 4):
The average current delivered by the supply voltage is:
Figure 125. Current delivered by supply voltage in a phantom ground output
The power delivered by the supply voltage is:
Then, the power dissipation by each amplifier is
and the maximum value is obtained when:
and its value is:
This maximum value depends only on the power supply voltage and load values.
configuration
Icc
AVG
P
diss
=
P
1
-- -
π
=
η
∫
supply
P
P
π
0
=
⎛
⎜
⎝
diss
diss
V
---------------- -
2 2V
---------------------- P
η
------------------ -
P
PEAK
π R
R
=
P
supply
MAX
∂P
∂
MAX
L
=
P
out
-- -
4
π
diss
out
CC
L
V
sin
=
=
=
CC
2V
-------------- - W
=
------------ - W
π
78.5%
π
t ( )
V
=
2
I
2
CC
2
CC
R
πV
-------------------- -
out
R
2
CC
t d
0
2V
L
L
PEAK
AVG
⎞
⎟
⎠
(
PEAK
(
=
CC
–
(
2V
-------------------- - A
P
)
W
)
out
= V
πR
)
PEAK
(
L
W
CC
)
( )
/2, so
Application information
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