Tripath Technology, Inc. - Technical Information
Typical Performance
THD+N versus Output Power
versus Supply Voltage
R
L
= 8Ω
20Hz - 22kHz BW
f = 1kHz
BBM = 25nS
Av = 14.8
ST STP19NB20 MOSFET
10
10
THD+N versus Output Power
versus Supply Voltage
R
L
= 4Ω
20Hz - 22kHz BW
f = 1kHz
BBM = 25nS
Av = 14.8
ST STP19NB20 MOSFET
THD+N (%)
THD+N (%)
1
1
27V
0.1
33.75V
50V
27V
33.75V
50V
0.1
0.01
1
10
Output Power (W)
100
1000
0.01
1
10
Output Power (W)
100
1000
+10
+0
-10
-20
Intermodulation Performance
R
L
= 8Ω
10Hz - 80kHz BW
19kHz, 20kHz, 1:1
BBM = 25nS
Pout = 20W/Channel
V
S
= +/-33.75V
0dBr = 13Vrms
Av = 14.8
ST STP19NB20 MOSFET
+10
+0
-10
-20
-30
Intermodulation Performance
R
L
= 4Ω
10Hz - 80kHz BW
19kHz, 20kHz, 1:1
BBM = 25nS
Pout = 30W/Channel
V
S
= +/-33.75V
0dBr = 11Vrms
Av = 14.8
ST STP19NB20 MOSFET
FFT (dBr)
FFT (dBr)
-30
-40
-50
-60
-70
-80
-90
-100
-40
-50
-60
-70
-80
-90
-100
60
100
200
500
1k
2k
5k
10k
20k 30k
60
100
200
500
1k
2k
5k
10k
20k 30k
Frequency (Hz)
Frequency (Hz)
Channel Separation versus Frequency
A-Weighted Noise FFT
+0
-10
-20
-30
-40
-50
Channel Separation (dBr)
20Hz - 22kHz BW
BBM = 25nS
Pout = 0
V
S
= +/-33.75V
R
L
= 4Ω
Av = 14.8
ST STP19NB20 MOSFET
+0
-10
-20
-30
-40
-50
-60
-70
-80
20Hz - 22kHz BW
BBM = 25nS
Ω
Pout = 30W/Channel @ 4
Pout = 20W/Channel @ 8
Ω
V
S
= +/-33.75V
Av = 14.8
ST STP19NB20 MOSFET
Noise (dBv)
-60
-70
-80
-90
-100
-110
-120
-130
-140
20
50
100
200
500
1k
2k
5k
10k
20k
4Ω
8Ω
-90
-100
20
50
100
200
500
1k
2k
5k
10k
20k
Frequency (Hz)
Frequency (Hz)
8
TA0102A, Rev. 3.1/06.01
TRIPATH [ TRIPATH TECHNOLOGY INC. ]
