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參數(shù)資料
| 型號： | LD549 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | High Power Class B Output Stage |
| 中文描述： | 高功率輸出級B級 |
| 文件頁數(shù)： | 2/5頁 |
| 文件大?。?/td> | 79K |
| 代理商： | LD549 |
2
500 - 25 - 09
SEQUENCE CONDITIONS COMMENTS
1
Power Supply
Off
2
S1
Closed
Removes V
IN
3
S2 / S3
Closed
Discharges C2 and C3
4
S1
Open
Applies V
IN
(V
IN
level is determined from Gain Test)
5
S2 / S3
Open
Removes short from C2 and C3
6
Power Supply
On
7
Gain must be within specification, within 3 seconds after power supply is turned on
ABSOLUTE MAXIMUM RATINGS
PARAMETER
VALUE & UNITS
Supply Voltage
3 VDC
Power dissipation
60 mW
Operating Temperature
-10 to + 40
°
C
Storage Temperature
-20 to + 70
°
C
CAUTION
CLASS 1 ESD SENSITIVITY
1
4
5
8
PIN CONNECTION
DEC1
R
T
I/P
DEC2
V
B
GND
OUT1
OUT2
ELECTRICAL CHARACTERISTICS
Conditions: Temperature 25
o
C, Supply Voltage V
B
= 1.3 VDC
All switches and parameters remain as shown in test circuit unless stated in condition column
PARAMETER SYMBOL
CONDITION MIN TYP
MAX
UNITS
Gain
A
CL
V
OUT
= 0.707 V
RMS
38
40
42
dB
Quiescent Current
I
AMP
100
-
400
μ
A
I
TRANS
170
-
370
μ
A
I
TOT
-
500
770
μ
A
Maximum Drive Current
V1 = 0V (S2, S3 closed)
V4 = 0V LC549
LV549
LD549
10
10
36
35
-
50
75
41
75
mA
mA
mA
Input Impedance
18
27
36
k
Total Harmonic Distortion & Noise
THD
V
OUT
= 0.707 V
RMS
-
0.5
-
%
V
OUT
= 1.3 V
RMS
-
2.5
5.2
%
Input Referred Noise
IRN
NFB 0.2 to 10 kHz at 12 dB/oct (S1 closed)
-
1.2
2.5
μ
V
Start Up Time
-
-
3
sec
START-UP TIME TEST
(Refer to Test Circuit)
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