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GL504 Datasheet

  • GL504

  • GL504 - Low Current Preamplifier with Output Limiting

  • 5頁

  • ETC

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Low Current Preamplifier
with Output Limiting
GL504 - DATA SHEET
FEATURES
鈥?/div>
designed to drive class D integrated receivers
鈥?/div>
MPO range externally adjustable
鈥?/div>
150
碌
A typical current drain
鈥?/div>
46 dB of adjustable gain
鈥?/div>
low external parts count
Composed of two stages, an inverting preamp with gain of
28 dB, and a transconductance block with gain of 18 dB, the
GL504 is easily configured for mid-supply reference as
required by the class D receivers.
The two stages of the GL504 must be AC coupled in order to
maintain the DC bias conditions of each stage. Also, a 48
k鈩?resistor, between the output and ground, is used to keep
the receivers at mid-supply reference. The minimal total parts
count, excluding an MPO variable resistor, requires 3
capacitors, a 100 k鈩?volume control and the 48 k鈩?bias
resistor at the output.
The GL504 is capable of providing a flat frequency response
with very little distortion.
DESCRIPTION
The GL504 is a low current preamplifier designed to drive
the class D series of integrated receivers. This preamp has a
built-in symmetrical peak clipping output limiter, 46 dB of
adjustable gain, and requires few external components.
STANDARD PACKAGING
鈥?8 Pin MICROpac
鈥?8 Pin PLID
鈥?8 Pin SLT
鈥?Chip (56 x 56 mils)
Au Bump
廬
R
MIC
6
R
MIC
7
V
B
R
A
IN
5
PULL
A
B
8
B
OUT
R
CLIP
4
U.S. Patent No. 07/354,327
3
B
IN
2
MPO
1
GND
A
OUT
BLOCK DIAGRAM
Revision Date: May 1998
Document No. 510 - 99 - 06
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

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