TA0103A Datasheet, PDF (8/18 Pages) Tripath Technology Inc. – Stereo 250W (4Ω) Class-T Digital Audio Amplifier Driver using Digital Power Processing (DPPTM) Technology

Tripath Technology, Inc. - Technical Information
Typical Performance
THD+N versus Output Power versus Supply Voltage
R_L = 8Ω
10
20Hz - 22kHz BW
f = 1kHz
BBM = 65nS
Av = 20.75
ST STW38NB20 MOSFET
1
36V
45V
58V
0.1
THD+N versus Output Power versus Supply Voltage
10
20Hz - 22kHz BW
R_L = 4Ω
f = 1kHz
BBM = 65nS
Av = 20.75
ST STW38NB20 MOSFET
1
36V
45V 58V
0.1
0.01
1
10
100
Output Power (W)
1000
0.01
1
10
100
1000
Output Power (W)
Intermodulation Performance
+10
10Hz - 80kHz BW
+0 ^{19kHz, 20kHz, 1:1}
BBM = 65nS
-10
Pout = 25W/Channel
V_S = +/-45V
0dBr = 14Vrms
-20 _{Av = 20.75}
ST STW38NB20 MOSFET
-30
R_L = 8Ω
-40
-50
-60
-70
-80
-90
-100
60 100
200
500
1k
2k
Frequency (Hz)
5k
10k
20k 30k
Intermodulation Performance
+10
10Hz - 80kHz BW
+0 ^{19kHz, 20kHz, 1:1}
BBM = 65nS
-10
Pout = 36W/Channel
V_S = +/-45V
0dBr = 12Vrms
-20 _{Av = 20.75}
ST STW38NB20 MOSFET
-30
R_L = 4Ω
-40
-50
-60
-70
-80
-90
-100
60
100
200
500
1k
2k
Frequency (Hz)
5k
10k
20k 30k
Channel Separation versus Frequency
+0
20Hz - 22kHz BW
-10 _{BBM = 65nS}
Pout = 60W/Channel @ 4Ω
-20 _{Pout = 35W/Channel @ 8Ω}
-30
V_S = +/-45V
Av = 20.75
ST STW38NB20 MOSFET
-40
-50
-60
-70
4Ω
-80
8Ω
-90
-100
20
50
100
200
500
1k
2k
5k
Frequency (Hz)
A-Weighted Noise FFT
+0
20Hz - 22kHz BW
BBM = 65nS
-20 Pout = 0W
V_S = +/-45V
-40
R_L = 4Ω
Av = 20.75
ST STW38NB20 MOSFET
-60
-80
-100
-120
10k 20k
-140
20
50
100 200
500
1k
2k
Frequency (Hz)
5k
10k 20k
8
TA0103 – Rev 3.3/06.00