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參數資料
| 型號： | EB-120 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | 20W Class D Single Channel Audio Amplifier |
| 中文描述： | 20瓦D類單聲道音頻放大器 |
| 文件頁數： | 3/13頁 |
| 文件大?。?/td> | 392K |
| 代理商： | EB-120 |
ATA-120
1.4 Typical Operating Characteristics [Note 5]
SYMBOL PARAMETER
This is preliminary information on a new product. Specifications are subject to change without notice.
129 Morgan Drive, Norwood, MA 02062
voice: (781) 551-9450
CONTROLLED DOCUMENT: P_903-000009_Rev14 ATA-120 Data Sheet.doc
fax: (781) 440-9528
email: apogee@apogeeddx.com
DRN: PRELIMINARY Page 3 of 13
CONDITION
THD+N = 10%
, 4
Load
THD+N = 10%
, 8
Load
P
OUT
= 1 W
, 4
Load
P
OUT
= 1 W
, 8
Load
P
OUT
= 20 W,
4
Load
P
OUT
= 10 W, 8
Load
A-Weighted
A-Weighted, relative to 15W
A-Weighted
MIN
TYP
20
10
0.1
0.05
90
93
20
91
92
190
47
MAX
UNIT
W
W
%
%
%
%
KHz
dB
dB
μV
dB
P
OUT
Power Output
THD+N
Total Harmonic Distortion
Plus Noise
η
Efficiency
BW
DNR
SNR
PSR
Note 5 – Performance based on circuit of Figure 3, V
DD
= 24V, V
ENABLE
= 5V, f = 1 KHz, T
A
= 25°C
Maximum Power Bandwidth
Dynamic Range
Signal to Noise Ratio
Noise Floor
Power Supply Rejection
2.0 PIN DESCRIPTION
Pin No.
Pin Name Pin Function
IN_P
Amplifier Positive Input
. IN_P is the positive side of the differential input to the
amplifier. Use a resistive voltage divider to set the voltage at IN_P to V
DD
/2. See
Figure 3
.
IN_N
Amplifier Negative Input
. IN_N is the negative side of the differential input to the
amplifier. Drive the input signal and close the feedback loop at IN_N. See
Figure 3
.
AGND
Analog Ground
. Signal input ground. Connect AGND to PGND at one single point.
ENABLE
Enable Input
. Set ENABLE high to turn-on the amplifier; set it low to turn it off.
BOOST
High-Side MOSFET Bootstrap Input
. A capacitor from BOOST to POUT supplies
the gate drive current to the high-side of the MOSFET. Connect a 0.47μF capacitor
from POUT to BOOST. Place a 6.2V zener diode from BOOST to POUT to prevent
overstressing the internal circuitry.
VDD
Power Supply Input
. VDD is the drain of the high-side MOSFET switch and supplies
the power to both the output stage and the ATA-120 internal control circuitry. In
addition to the main bulk capacitor, bypass VDD to PGND with a 1μF X7R capacitor
placed close to the IC’s V
DD
(pin 6) and P
GND
(pin 8).
POUT
Switched Power Output
. POUT is the output of the ATA-120. Connect the L-C filter
between POUT and the output blocking capacitor. See
Figure 3
.
PGND
Power Ground
. Power stage ground. Connect PGND to AGND at one single point.
1
2
3
4
5
6
7
8
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