TAS2521
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SLAS687A –FEBRUARY 2013–REVISED FEBRUARY 2013
4.2 HP Driver Performance
20
0
20
0
œ20
œ20
œ40
œ40
œ60
œ60
œ80
œ80
0dBFS
0dBFS
œ100
œ120
œ140
œ160
œ180
œ100
œ120
œ140
œ160
œ180
0
4000
8000
12000
16000
20000
0
4000
8000
12000
16000
20000
C008
C008
Frequency (Hz)
Frequency (Hz)
Figure 4-8. DAC TO HP FFT Amplitude at 0 dBFS vs Frequency
Figure 4-9. AINL TO HP FFT Amplitude at 0 dBFS vs Frequency
(16 Ω Load)
(16 Ω Load)
0
œ10
œ20
œ30
œ40
0
œ10
œ20
œ30
œ40
CSM=e0r.i7e5sV1,
AVDD=1.5V
CM=0.75V,AVDD=1.5V
œ50
œ50
CSM=e0r.i7e5sV2,
AVDD=1.8V
CM=0.75V,AVDD=1.8V
œ60
œ60
CSM=e0r.i7e5sV4,
AVDD=1.95V
CM=0.75V,AVDD=1.95V
œ70
œ70
CSM=e0r.i9eVs,5
CM=0.9V,AVDD=1.8V
AVDD=1.8V
œ80
œ80
CM=0.9V,AVDD=1.95V
CSM=e0r.i9eVs,6
AVDD=1.95V
œ90
œ90
0.0
5.0
10.0 15.0 20.0 25.0 30.0 35.0 40.0
0.0
5.0
10.0
15.0
20.0
25.0
C010
C011
Output Power (mW)
Output Power (mW)
Figure 4-10. Total Harmonic Distortion + Noise vs HP Power
(Gain = 9 dB)
Figure 4-11. Total Harmonic Distortion + Noise vs HP Power
(Gain = 32 dB)
Copyright © 2013, Texas Instruments Incorporated
Typical Performance
17
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