FAB2210 Datasheet, PDF (10/35 Pages) Fairchild Semiconductor – Audio Subsystem with Class-G Headphone and 3.3W Mono Class-D Speaker with Dynamic Range Compression

Typical Performance Characteristics
Speaker Amplifier (Continued)
0
f=
1KHz
-30
-60
-90
-120
-150
0
5
10
15
20
Frequency (KHz)
Figure 16. Output vs. Frequency
Headphone Amplifiers
Unless otherwise noted: audio BW=22Hz to 20KHz, f_IN=1KHz, DIFA=1, DIFB=0, HP_AMIX=0, HP_BMIX=1,
SP_AMIX=0, SP_BMIX=0, unused inputs are AC grounded, DRC is off, preamplifier gains=0dB, headphone
volume=0dB, headphone amplifier gain=0dB, speaker volume=0dB, SP_GAIN=00, edge-rate control is on, spread
spectrum is on, HP_NG_RAT=000, SP_NG_RAT=000, SRST=0, SDA and SCL pull-up voltage=DV_DD, Z_SPK
=8Ω+33µH, R_HP=32Ω, HP_HIZ=0, SV_DD=3.6V, DV_DD=1.8V, and T_A=25°C.
10
f = 1KHz
HP_GAIN[1:0] = 11
1
1
C_IN = 1uF
HP_GAIN[1:0] = 11
Pout = 10mW/Channel
Pout = 20mW/Channel
0.1
0.1
0.01
0.01
0.001
0.01
0.1
1
10
Output Power (mW)
100
0.01
0.1
1
10
Frequency (KHz)
100
Figure 17. THD+N vs. Output Power
Figure 18. THD+N vs. Frequency
70
f = 1KHz
60
HP_GAIN[1:0] = 11
HP_NG_RAT[2:0] =
000
50
40
30
20
0
P_OUT = 10mW
-20
-40
-60
-80
10
-100
0
-120
0
10
20
30
40
50
60
70
80
0.01
0.1
1
10
100
Output Power(mW)
Frequency (KHz)
Figure 19. Power Dissipation vs. Output Power
Figure 20. Crosstalk vs. Frequency
© 2011 Fairchild Semiconductor Corporation
FAB2210 • Rev. 1.1.1
10
www.fairchildsemi.com