LD505 Datasheet, PDF (1/5 Pages) List of Unclassifed Manufacturers – High Gain Class A Amplifier

GENNUM
CORPORATION
High Gain Class A Amplifier
LC505/LD505 DATA SHEET
FEATURES
DESCRIPTION
• 71 dB of gain with 1.3 V supply
The LC/LD505 are low voltage, linear monolithic integrated
• 0.2 to 2.0 mA of transducer current adjustment
• 43 dB of volume control range
D _{• 1.0 to 1.6 V supply operating range}
E _{• 2.2 kΩ internal decoupling resistor for microphone}
bias (LD505 only)
D _{• output limiting capabilities (LD505 only)}
EN ^NS STANDARD PACKAGING
• MINIpac P6 (LC505)
M _{IG • MINIpac P8 (LD505)}
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 kΩ
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.
OT ^{RENCEOWM DES} _IN
N _FOR 5
VB
3
+
-
33k
2
OUT
MICBIAS
8
VB _LIMITER
4
1
IN
6
2.2k
+
-
33k
3
OUT
VC 100
4
6
200
GND
All resistors in ohms, all capacitors in
microfarads unless otherwise stated
1
RE
VC 100
5
7
200
2
GND
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
1
500 - 15 - 09
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. [phone] fax: [phone]
Japan Branch: A-302, M i yamae Vi l l age, 2–10–42 M i yamae, Sugi nami–ku, Tokyo 168, Japan tel. [phone] fax [phone]