GA3203 Gennum Corp., GA3203 Datasheet

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GA3203

Manufacturer Part Number
GA3203
Description
Programmable DynamEQIII
Manufacturer
Gennum Corp.
Datasheet
V
GND
SDA
REG
MS
FEATURES
thinSTAX™ PACKAGING
Hybrid typical dimensions:
Revision Date: May 2001
IN
10
1
2
3
5
All resistors in ohms, all capacitors in farads, unless otherwise stated.
low & high frequency gain adjustment
adjustable high frequency compression ratio
(1:1 to 4:1)
fixed low frequency compression ratio (3:1)
twin average detection™
24dB/octave band split filter
8:1 output compression limiting
notch filter to minimize acoustic feedback
pre & post emphasis circuitry
low level squelch control (1:2 expansion)
multi memory (4)
8 programmable parameters
(5.08 x 3.25 x 1.52mm)
0.200 x 0.128 x 0.060in.
GENNUM CORPORATION P .O. Box 489, Stn A, Burlington Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996
45k5
18k
R9
R2
80n
C1
80n
C3
C2
8n
C21
8n
REGULATOR
I REF
V
7
B
DETECTOR
SQUELCH
15n
C4
SW
DETECTOR
C20
- A
10n
FAST
Web Site: www.gennum.com E-mail: hipinfo@gennum.com
CONTROL
DETECTOR
20n
C6
SLOW
100n
C19
RECTIFIER
460k
R7
NOTCH
184k
R4
V
BLOCK DIAGRAM
REF
BAND SPLIT
24 dB / Oct
FILTER
185k
R3
R1
64k
Lp
Hp
1
X
COMPRESSOR
DESCRIPTION
The GA3203 programmable hybrid is composed of a
DynamEQ
processor and the GP523 controller memory chip.
The hybrid has 8 programmable parameters including Low
Frequency Gain, High Frequency Gain, High Frequency
Compression Ratio, Band Split Filter Crossover Frequency,
AGC-I Threshold Kneepoint, AGC-O Threshold, Volume Control
and Notch Feedback Control.
The DynamEQ
microphone and circuit noise in quiet environments and high
gain conditions. It also includes low distortion compression
limiting AGC-O, pre and post emphasis circuitry, and an
acoustic feedback notch filter.
The GA3203 hybrid code programmed into the GP523 is “4”.
COMPRESSOR
1
X
®
III Wide Dynamic Range Compression signal
185k
R6
150n
C13
®
III includes a squelch circuit which attenuates
B
8
IN
GA3203 Programmable
- B
R8
92k
B
9
OUT
AGC-O
Ragc
PRELIMINARY DATA SHEET
100n
DynamEQ
C14
R5
92k
RECTIFIER
Document No. 522 - 13 - 04
- C
C15
4n
100n
C18
Rsquelch
C16
30n
C17
20n
GA3203
GP523
®
III
6
4
OUT
GND

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GA3203 Summary of contents

Page 1

... It also includes low distortion compression limiting AGC-O, pre and post emphasis circuitry, and an acoustic feedback notch filter. The GA3203 hybrid code programmed into the GP523 is “4” 185k 185k ...

Page 2

ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Power Dissipation Operating Temperature Range Storage Temperature Range CAUTION ELECTROSTATIC SENSITIVE DEVICES DO NOT OPEN PACKAGES OR HANDLE EXCEPT AT A STATIC FREE WORKSTATION ELECTRICAL CHARACTERISTICS Conditions: Supply Voltage V = 1.3VDC, Frequency = ...

Page 3

... NOTE 1: Measured at output of Stage B SUPPORT SOFTWARE All support software for the GA3203 and the GP523 is available from Gennum’s website: www.gennum.com/hip/software ) R4 - Tap 15; (MPO Tap Tap 15 ...

Page 4

... Ragc Rsquelch C13 C14 C15 4n 150n 100n R8 92k 185k 92k C18 100n AGC-O RECTIFIER - C16 Ragc Rsquelch C13 C14 C15 4n 150n 100n R8 92k 8 9 GA3203 GP523 C17 20n 6 C16 30n 50k 4 GA3203 GP523 C17 20n V B 2µ 30n 4 ...

Page 5

... OUT 1 10 VREG SDA Fig. 4 Typical Assembly Diagram 185k 92k C18 100n AGC-O RECTIFIER - C16 Ragc Rsquelch C13 C14 C15 100n 4n 150n R8 92k 8 9 2µ2 + RECEIVER + _ BATTERY TO PROGRAMMER GA3203 GP523 C17 20n 6 30n 50k 4 522 - ...

Page 6

TYPICAL PERFORMANCE CURVES -20 ƒ = 3kHz R6 - Tap Tap 0 -30 -40 - Tap 15 -60 -70 -80 -100 -90 -80 -70 -60 -50 INPUT (dBV) Fig. 5 High Frequency Gain Control (Tap ...

Page 7

R6 - Tap 15 -40 Squelch OFF - Closed -50 -55 Squelch ON - Open -65 -70 -75 -80 -110 -105 -100 -95 -90 -85 -80 INPUT (dBV) Fig.11 Low Level ...

Page 8

V = -40dBV IN ∆ = 200Hz 0.01 3k 10k FREQUENCY (Hz) Fig. 17 Intermodulation Distortion (CCIF) vs. Frequency -70dBV 100 1k FREQUENCY ...

Page 9

... PACKAGE DIMENSIONS GA3203 0.128 (3.25) XXXXXX 0.200 (5.08) 0.0215 (0.546) 0.0285 (0.724 Dimensions are in inches. Dimensions in parenthesis are in millimetres converted from inches and include minor rounding errors. 1.0000 inches = 25.400mm Dimension tolerances: ± 0.003 (±0.08) unless otherwise stated. Minimum pad sizes: 0.0290 x 0.0400 (0.737 x 1.016). ...

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