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參數(shù)資料
| 型號： | GS3044 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | AGC-O with Active Low Cut Filter in a CIC Size Hybrid |
| 中文描述： | 自動增益控制與有源低切濾波器O設(shè)備在議會大小混合 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大小： | 111K |
| 代理商： | GS3044 |
DATA SHEET
AGC-O with Active Low Cut Filter
in a CIC Size Hybrid - GS3044
FEATURES
CIC suitable package size
low distortion compression limiting
38dB maximum system gain, adjustable over a
38dB range
output compression threshold, adjustable over
16dB range
2nd order active low cut filter adjustable from 530Hz
to 2.0kHz
designed to drive a class D integrated receiver
averaging detector
flexibility to add high cut filter
STANDARD PACKAGING
Hybrid typical dimensions:
0.180 x 0.110 x 0.070 in.
(4.57 x 2.79 x 1.78 mm)
DESCRIPTION
The GS3044 CIC hybrid features AGC-O capability for low
distortion output limiting with an active low cut filter in a
package size suitable for CIC instruments. The circuit consists
of an AGC preamplifier and output stage, capable of driving
a class D integrated receiver. The compression control circuit,
connected between the input and output of the AGC
preamplifier, varies the current controlled resistance. It
operates with an 8:1 compression ratio and uses an averaging
detector with a time constant of 270ms, selected to provide
optimal sound quality over a full range of sound and listening
environments. The actual attack and release times are typically
40ms and 150ms respectively when the circuit is fully in the
compression region of operation (measured times vary
depending on gain and threshold settings).
The system gain, compression control and filter corner
frequency can be adjusted by choosing three independent
resistors or 100k trimmers. Maximum system gain is 38dB. It
can be adjusted within a 38dB range. The output compression
threshold can be adjusted within a 16dB range. The filter's
corner frequency can be adjusted from 530Hz to 2kHz.
BLOCK DIAGRAM
Revision Date: March 2000
C2
0
μ
1
C5
0
μ
1
C7
0
μ
15
C8
33n
12k
48k
VB
REGULATOR
48k
-A
RECT.
B
8:1
COMPRESSION
CONTROL
C6
22n
R
VC
2
R
TH
3
-F
C1
15n
C3
6n8
C4
10n
R
HP
10k
80k
800
IN
F
OUT
A
IN
GND
V
REG
V
B
1
OUT
GS3044
R1 = 0
Note: R1 can be desoldered from hybrid to break connection between F
OUT
and A
IN
10
4
5
6
7
8
9
All resistors in ohms, all capacitors
in farad, unless otherwidse stated.
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 - 90 - 02
G
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