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參數(shù)資料
| 型號： | DDX2060 |
| 英文描述： | Amplifier chipset |
| 中文描述： | 放大器芯片 |
| 文件頁數(shù)： | 12/15頁 |
| 文件大小： | 538K |
| 代理商： | DDX2060 |
____________ DDX-2000/2060
12
Details are subject to change without notice.
signal acts to immediately disable the output
power MOSFETs, placing both H-bridges in a
high impedance state. At the same time an
open-drain MOSFET connected to the FAULT
pin is switched on. There are two possible
modes subsequent to activating a fault. The first
is a SHUT-DOWN mode. With FAULT (pull-up
resistor) and TRI-STATE pins independent, an
activated fault will disable the device, signaling
low at the FAULT output. The device may
subsequently be reset to normal operation by
toggling the TRI-STATE pin from High-Low-High
using an external logic signal. The second is an
AUTOMATIC recovery mode. This is depicted
in the application circuit, Figure 5B. The FAULT
and TRI-STATE pins are shorted together and
connected to a time constant circuit comprising
R6 and C17. An activated FAULT will force a
reset on the TRI-STATE pin causing normal
operation
to
resume
determined by the time constant of the circuit. If
the fault condition is still presented, the circuit
operation will continue repeating until such time
as the fault condition is removed. An increase in
the time constant of the circuit will produce a
lower recovery frequency tending toward safer
operation. Note, the automatic recovery mode
may produce audible artifacts in a loudspeaker
when a fault is activated. Care must be taken in
the overall system design so as not to exceed
the
protection
thresholds
operation.
Power Outputs
The DDX-2060 power and output pins are
duplicated to provide a low impedance path for
the devices bridged outputs. All duplicate
power, ground and output pins must be
connected for proper operation. The PWRDN or
TRI-STATE pins should be used to set all
MOSFETS to the Hi-Z state during power-up
until the logic power supply, VL, is well
established.
Parallel Output/High Current Operation
The DDX-2060 outputs can be connected in
parallel for mono operation to increase the
output current to a load. In this configuration the
device can provide over 70W into 4
.
This
mode is enabled with the CONFIG pin
connected to VREG1 and the inputs combined
INLA=INLB, INRA=INRB and outputs combined
OUTLA=OUTLB, OUTRA=OUTRB.
following
a
delay
under
normal
ADDITIONAL INFORMATION
Output Filter
A passive two-pole low pass filter is used on the
DDX-2060 power outputs to reconstruct the
audio signal. System performance can be
significantly affected by the output filter design
and choice of components. Good audio
performance can be obtained with low cost,
solenoid type inductors having a DCR <.05
and a 2A minimum rating. Output filter
capacitors should be the following types:
Common-mode capacitors should be 50V
ceramic, X7R dialetric or 50V film types.
Differential capacitors should be 50V or greater
film types. A filter design for 8
loads is shown
in the Typical Application Circuit Fig. 5B for
reference.
Power Dissipation/Heat Sink Requirements
The DDX-2060 is a high efficiency dual channel
design intended for audio applications up to 35
Watts per channel. The power dissipation of the
device will depend primarily on the supply
voltage, load impedance, and output modulation
level.
The DDX-2060 surface mount package includes
an exposed thermal pad on the bottom of the
device to provide a direct thermal path from the
integrated circuit to the PCB. This pad must be
soldered to a low thermal impedance path at
circuit ground potential for proper operation, e.g.
a PCB ground plane. For continuous duty rated
applications, careful consideration must be
made to the overall thermal design.
Performance Measurements
Class
D
amplifiers
switching distortion outside the audio bandwidth.
Apogee's DDX amplifier uses patented PWM
modulation that significantly reduces the size of
these products compared to typical Class D
designs. However, in order to obtain accurate
performance measurements in the audio
bandwidth (i.e., 20Hz to 20kHz) additional
filtering is required. The Typical Performance
data was taken using a brick wall filter with a
break frequency of 20kHz. This type of filter is
often
provided
with
systems.
produce
measurable
audio
measurement
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PDF描述 |
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| DE2812C | Fixed Inductors for Surface Mounting |
| DEM-DAI | DEM-DAI - EVALUATION FIXTURE |
| DEM-DAI1600 | DEM-DAI1600 - Evaluation Fixture |
| DEM-DAI1704 | DEM-DAI1704 - Evaluation Fixture |
| DEM-DAI1710 | DEM-DAI1710 - EVALUTION FIXTURE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DDX2060-13TR | 制造商:APOGEE TECHNOLOGY 功能描述:Quad Power Half-Bridge. 2x45W, 8 Ω |
| DDX2100 | 制造商:APOGEE TECHNOLOGY 功能描述:Quad Power Half-Bridge. 2x50/65W, 6/8 &# |
| DDX2100-13TR | 制造商:APOGEE TECHNOLOGY 功能描述:Quad Power Half-Bridge. 2x50/65W, 6/8 &# |
| DDX-2102 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:All-Digital High Efficiency Power Amplifier |
| DDX2102-13TR | 制造商:APOGEE TECHNOLOGY 功能描述:DDX POWER DEVICE - Mini Pack - LEAD FREE |
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