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參數(shù)資料
| 型號： | LC552 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | High Power Class B Amplifier |
| 中文描述： | 高功率B類放大器 |
| 文件頁數(shù)： | 1/3頁 |
| 文件大?。?/td> | 131K |
| 代理商： | LC552 |
OUTPUT A
OUTPUT
STAGE
I/P
OUTPUT B
DEC
B
PREAMP
GND
PREAMP
O/P
PREAMP
I/P
470
MIC
BIAS
3
2
13
1
12
7
11
8
9
PREAMP
DEC
A
6
O/P
GND
4
10
5
2.2K
V
CC 2
14
CURRENT
TRIM
FEEDBACK
V
CC
1
OUTPUT
STAGE
Document No. 500 - 58 - 6
High Power Class B Amplifier
LC552 DATA SHEET
DESCRIPTION
The LC552 is a versatile low voltage, high gain, high power
output amplifier.
It features a preamplifier module with adjustable gain and a
unique power amplifier module that can be operated either as
a high power, high efficiency class B amplifier, with very low
quiescent current consumption, or as a medium power
"vari-bias" class A amplifier.
While designed specifically for use in body type hearing aids,
the LC552 can be used in other applications where linear audio
frequency amplification and frequency shaping is required.
FEATURES
operates over a supply range of 1.0 V to 3.0 V
selectable class B or vari-bias class A operation
feedback stabilized gain
≤
80 dB
high power output > 140 dB
SPL
independent preamplifier and output modules
minimum external parts count
BLOCK DIAGRAM
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-5846
Japan Branch: A-302 Mi yamae Village, 2–10–42 Miyamae, Suginami–ku, Tokyo 168, Japan tel. (03) 3334-7700 fax (03) 3247-8839
Revison Date: July 1993.
All resistors in ohms, all capacitors in farads unless otherwise stated.
STANDARD PACKAGING
14 pin DIP
14 pin SOIC
Chip (50 x 52 mils)
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