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GS3019 数据表(PDF) 1 Page - Gennum Corporation

部件名 GS3019
功能描述  Hybrid with LS509 Amplifier
Download  5 Pages
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制造商  GENNUM [Gennum Corporation]
网页  http://www.gennum.com
标志 GENNUM - Gennum Corporation

GS3019 数据表(HTML) 1 Page - Gennum Corporation

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GS3019 - HYB DATA SHEET
GS3019 Hybrid
with LS509 Amplifier
FEATURES
• Gennum’s LS509 3 stage amplifier
• independent preamp can be used as telecoil
preamplifier
• four “must use” capacitors mounted on hybrid
• choice of 5 settings for optimal transducer
current
• easy assembly and high reliability
STANDARD PACKAGING
• Hybrid Typical Dimensions
0.276 in x 0.101 in x 0.094 in
(7.01 mm x 2.57 mm x 2.39 mm)
DESCRIPTION
The hybrid consists of Gennum's LS509 class A amplifier,
four capacitors, and two selectable bias resistors. This
hybrid is very similar to Gennum's 3010 with the exception
that capacitors C2 and C3 on the GS3019 have been
increased in value to extend the frequency response of
the system.
This hybrid is very similar to Gennum's 3010 with the
exception that capacitors C2 and C3 on the GS3019 have
been increased in value to extend the frequency response
of the system.
C2 and the output impedance of the
microphone form a high pass filter with a corner frequency
of approximately 180 Hz.
The hybrid allows for easy
adjustment of this corner frequency via the addition of
components to its many additional solder pads. Likewise,
R3 and C3 form a high pass filter with a corner frequency
of 130 Hz. Altering this frequency is easily accomplished
by adding additional capacitance between pads 12 and 2
on the hybrid.
Stage C of the LS509 is a class A current drive output. There
is a fixed reference voltage of typically 29 mV at pin 2 of the
chip (pad 5 of the hybrid).
The current that flows in the
receiver is the ratio of this 29 mV reference voltage to the
resistance seen from pin 2 to ground. R1 and R2 have been
included on the GS3019 to allow for easy adjustment of the
current for the most commonly used receivers.
The system also has the capability of MPO (Maximum Power
Output) control. This is provided by the Schottky diodes on
the LS509 die. To make use of the diodes in the system, a
potentiometer must be added from pads 7 to 9 on the hybrid.
VMIC
A IN
A OUT A OUTR B INC
B IN
B OUT
GND
GND1
R1 GND2 R2
R3
MPO
OUT
MGND
7
3
2
4
5
6
1
10
9
8
21k
C
-
B
-
- A
VCC
LS509 - DIE
4k
GS3019
C4
0
µ1
C3
220n
R3
5k6
C1
4
µ7
125
RE
R1
58
R2
98
IN
C2
220n
VB
15
14
16
1
8
7
9
3
12
2
13
4
65
11
10
18
17
All resistors in ohms, all capacitors in farads unless otherwise stated.
FUNCTIONAL BLOCK DIAGRAM
Revision Date: May 1998
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996
Web Site: www.gennum.com
E-mail: hipinfo@gennum.com
Document No. 521 - 04 - 02


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