Apogee DDX-1050 Посібник - Сторінка 7

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Full Bridge Mode - Output Power vs Supply Voltage, THD+N<1%
100
90
80
70
60
50
40
30
20
10
0
10
LEGEND:
DDX-1050, Iout(min) = 3.5A
DDX-1060, Iout(min) = 4.0A
DDX-1080, Iout(min) = 4.5A
All devices, Iout(typ)
Figure 5 shows the full-scale output power (0 dB FS digital input with unity amplifier gain) as a function
of Power Supply Voltage for 4, 6, and 8 Ohm loads in either DDX
Output power is constrained for higher impedance loads by the maximum voltage limit of the
DDX-1080, DDX-1060 and DDX-1050 ICs and by the over-current protection limit for lower impedance
loads. The minimum threshold for the over-current protection circuit is 4.5/4.0/3.5A (at 25 ºC) but the
typical threshold is 6A. Solid curves depict typical output power capability of each device. Dotted and
dashed curves depict the output power capability constrained to the minimum current specification of
the DDX-1050, DDX-1060 and DDX-1080 respectively.
thermal management of the power device's internal dissipation. See Figure 4.
NOTE: Output power at 10% THD is approximately 30% higher.
129 Morgan Drive, Norwood, MA 02062
CONTROLLED DOCUMENT: P_903-000044_Rev08 DDX-1080_60_50 Data Sheet.doc
15
= 6A
Figure 5 - Full Bridge Output Power vs. Supply Voltage, <1% THD.
Specifications are subject to change without notice.
voice: (781) 551-9450
DDX-1080/DDX-1060/DDX-1050
4Ω
20
25
Power Supply Voltage (VDC)
R
= 8Ω
L
R
= 8Ω
L
R
= 8Ω
L
R
= 8Ω
L
The output power curves assume proper
fax: (781) 440-9528
8Ω
6Ω
30
35
R
= 6Ω
R
L
R
= 6Ω
R
L
R
= 6Ω
R
L
R
= 6Ω
R
L
®
Mode or Binary Full Bridge Mode.
DRN: PRELIMINARY
40
= 4Ω
L
= 4Ω
L
= 4Ω
L
= 4Ω
L
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