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LC505 Datasheet

  • LC505

  • High Gain Class A Amplifier

  • 5頁

  • ETC

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GENNUM
C
O
R
P
O
R
A
T
I
O
N
High Gain Class A Amplifier
LC505/LD505 DATA SHEET
FEATURES
鈥?/div>
71 dB of gain with 1.3 V supply
鈥?/div>
0.2 to 2.0 mA of transducer current adjustment
鈥?/div>
43 dB of volume control range
DESCRIPTION
The LC/LD505 are low voltage, linear monolithic integrated
amplifiers with a typical electrical gain of 71 dB. The circuits
are comprised of a compensated, unconditionally stable,
operational amplifier and a low distortion Class A single
transistor output stage with negative feedback for stability
over a wide temperature range.
Current trimming in the output stage for inductive or resistive
loads can be accomplished by connecting an emitter resistor
from RE to ground. The LC/LD505 can operate over a supply
voltage range of 1.0 to 1.6 DC.
The LD505 which is an eight pin device, has an internal 2.2 k鈩?/div>
decoupling resistor for microphone bias providing increased
supply line rejection. The base of the output transistor is also
accessible allowing connection of diodes in a feedback
configuration for peak limiting.
鈥?/div>
1.0 to 1.6 V supply operating range
鈥?/div>
2.2 k
鈩?/div>
internal decoupling resistor for microphone
bias (LD505 only)
鈥?/div>
output limiting capabilities (LD505 only)
STANDARD PACKAGING
鈥?MINIpac P6 (LC505)
鈥?MINIpac P8 (LD505)
D
E
D S
N N
E G
M SI
M E
O D
C
E W
R E
T N
O R
N O
F
VB
MICBIAS
8
VB
LIMITER
1
3
4
2
IN
+
OUT
IN
2.2k
3
+
OUT
5
6
-
-
33k
33k
VC
100
VC
100
5
7
GND
All resistors in ohms, all capacitors in
microfarads unless otherwise stated
4
6
GND
200
1
RE
200
2
RE
All resistors in ohms, all capacitors in
microfarads unless otherwise stated
LC505 BLOCK DIAGRAM
LD505 BLOCK DIAGRAM
Revision Date: January 1996
Document No. 500 - 15 - 09
500 - 15 - 09
1
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3
Japan Branch: A-302, M i yamae Vi l l age, 2鈥?0鈥?2 M i yamae, Sugi nami鈥搆u, Tokyo 168, Japan
tel. (905) 632-2996 fax: (905) 632-5946
tel. (03) 3334-7700
fax (03) 3247-8839

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