TA0104A Datasheet, PDF (6/18 Pages) Tripath Technology Inc. – STEREO 500W (4Ω) CLASS-T DIGITAL AUDIO AMPLIFIER DRIVER USING DIGITAL POWER PROCESSING (DPPTM) TECHNOLOGY

Tripath Technology, Inc. - Technical Information
Typical Performance at Vs = +75V
10
20Hz - 22kHz BW
5 _{f = 1kHz}
BBM = 25nS
2
V_S = +/-75V
Av = 14
ST STW38NB20 MOSFET
1
0.5
THD+N vs Output Power
0.2
0.1
0.05
0.02
0.01
0.005
0.002
0.001
1
2
5
10
20
50
Output Power (W)
R_L = 8Ω
100
200
R_L = 4Ω
500
Frequency Response
+2
+1.5
+1
+0.5
20Hz - 22kHz BW
BBM = 25nS
Pout = 10W
Vs = +/-75V
R_L = 8Ω
Av = 14
ST STW38NB20 MOSFET
+0
-0.5
-1
-1.5
-2
10 20
50 100
200
500
1k
2k
Frequency (Hz)
5k
10k 20k
100
90
80
70
60
50
40
30
20
10
0
0
Efficiency versus Output Power
R_L = 8Ω
R_L = 4Ω
22Hz - 22kHz BW
f = 1kHz
BBM = 25nS
V_S = +/-75V
Av = 14
ST STW38NB20 MOSFET
100 200 300 400 500 600 700
Output Power (W)
Intermodulation Performance
R_L = 8Ω
+10
+0 ^{10Hz - 80kHz BW}
19kHz, 20kHz, 1:1
-10 ^{BBM = 25nS}
Pout = 100W/Channel
-20 ^VS ^{= +/-75V}
0dBr = 28Vrms
-30 ^{Av = 14}
ST STW38NB20 MOSFET
-40
-50
-60
-70
-80
-90
-100
60 100
200
500
1k
2k
5k
Frequency (Hz)
10k
20k 30k
Channel Separation versus Frequency
R_L = 8Ω
+0
20Hz - 22kHz BW
-10 BBM = 25nS
Pout = 100W/Channel
-20
V_S = +/-75V
Av = 14
-30
ST STW38NB20 MOSFET
-40
-50
-60
-70
-80
-90
-100
20
50
100
200
500
1k
2k
Frequency (Hz)
+0 _{20Hz - 22kHz BW}
BBM = 145nS
-10 _{Pout = 0W}
-20
V_S = +/-75V
R_L = 8Ω
-30
Av = 14
ST STW38NB20 MOSFET
-40
A-Weighted Noise FFT
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
5k
10k 20k
20
50
100
200
500
1k
2k
Frequency (Hz)
5k
10k
20k
6
TA104A – Rev. 3.1/06.00