D2-24044_14 Datasheet, PDF (9/20 Pages) Intersil Corporation – Digital Audio Amplifier Power Stage

D2-24044
Half-Bridge Typical Performance Curves
10.00 _{HVDD = 24.0V,}
5.00 ^{8Ω LOAD, 1kHz}
2.00
1.00
0.50
0.20
0.10
0.05
0.02
0.06 0.1 0.2
0.5 1
2
POWER (W)
5 10
20
FIGURE 5. THD vs POWER, HALF-BRIDGE
1.000
0.500
0.200
0.100
0.050
0.020
0.010
0.005
0.002 ^{HVDD = 24.0V, 8Ω LOAD,}
2.4W POWER OUT
0.001
20
50 100 200 500 1k 2k
FREQUENCY (Hz)
5k 10k 20k
FIGURE 6. THD vs FREQUENCY, HALF-BRIDGE
12
10 ^{HVDD = 24.0V,}
8Ω LOAD, 1W
8
6
4
DC RESPONSE WITHOUT
DC BLOCKING CAPACITOR
2
-0
-2
-4
-6
AC RESPONSE DUE TO LOUDSPEAKER
-8
DC BLOCKING CAPACITOR
-10
-12
20
50 100 200 500 1k 2k
FREQUENCY (Hz)
5k 10k 20k
FIGURE 7. FREQUENCY RESPONSE, HALF-BRIDGE
-30
-35 _{NOISE FLOOR @ 1kHz, +24V RAIL,}
-40
-45
SPDIF INPUT, 8Ω LOAD, UNITY DSP GAIN
-50
-55
-60
-65
-70
-75
-80
-85
-90
-95
< -110dB, UN-WEIGHTED
-100
-105
-110
-115
-120
-125
-60 -55 -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 +0
dBFS
FIGURE 8. NOISE FLOOR, HALF-BRIDGE
9
FN7678.0
September 3, 2010