Sure Electronics TPA3123, User Manual

Page: 15 / 19

2*25W @4 Ω TPA3123
CLASS-D AUDIO AMPLIFIER BOARD
USER’S GUIDE
©
2004-2009 Sure Electronics Inc.
Chapter 3. Electrical Characteristics
Following table lists all typical data. For full specification, please refer to the TI data sheet
of TPA3123 chip.
T
A
=20
℃
, DC24V, f=1000Hz, Sine wave input, R
L
=4 Ω , Gain=20dB (unless otherwise
stated)
TABLE 3-1 ELECTRICAL CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Supply Voltage - 10V - 30V
Supply Current - - - 2A
Signal/Noise Ratio - 90dB 100dB -
Gain ＝ 36dB
- 0.100V 0.117V -
Gain
＝
32dB - 0.180V 0.196V -
Gain
＝
28dB - 0.380V 0.396V -
Input
Sensitivity
Gain
＝
20dB - 0.780V 0.803V -
V
DD
=24V, R
L
=4 Ω ,
Pout=10W
- 0.08% -
THD+N*
V
DD
=24V, R
L
=8 Ω ,
Pout=5W
- 0.08% -
Frequency Range - 20Hz-20KHz
（
±3dB
）
V
DD
=24V, R
L
=4 Ω ,
P
out
=16W
- 85% -
Efficiency
V
DD
=24V, R
L
=8 Ω ,
P
out
=8W
- 92% -
V
DD
=24V, R
L
=4 Ω ,
f=1000Hz
- 16W -
THD+N<1%
V
DD
=24V, R
L
=8 Ω ,
f=1000Hz
- 8W -
V
DD
=24V, R
L
=4 Ω ,
f=1000Hz
- 20W -
Output
Power
THD+N<10%
V
DD
=24V, R
L
=8 Ω ,
f=1000Hz
- 10W -
Input Impedance - - 60K -
Minimum Load - 3.2 Ω - -
High-level
input voltage
- 2V - -
SD, MUTE*
Low-level - - - 0.8V
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