GR592 [ETC]
GR592 - AGC-O Amplifier Chip ; GR592 - AGC -O放大器芯片\n
| 型号： | GR592 |
| 厂家： | 
ETC |
| 描述： | GR592 - AGC-O Amplifier Chip
|
| 文件： | 总3页 (文件大小：110K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AGC-O Amplifier Chip
GR592 DATA SHEET
DESCRIPTION
FEATURES
•
low distortion compression limiting
The GR592 features AGC-O capability for low distortion output
limiting. The circuit consists of an AGC preamplifier, an output
stage capable of driving a class D integrated receiver and an
independent gain stage.
•
38dB maximum system gain, adjustable over a
38dB range
•
output compression threshold, adjustable over
16dB range
The compression control circuit, connected between the input
and output of the AGC preamplifer, varies the current
controlled resistance. It operates with an 8:1 compression
ratio and uses an averaging detector. The time constant of
the detector is a function of the rectifier capacitor value. With
the rectifier capacitor value 150nF the time constant of the
detector is 270ms, providing 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).
•
•
•
designed to drive a class D integrated receiver
averaging detector
additional gain stage
PACKAGING
Chip (94 x 48 x 10 mil)
(2.39 x 1.22 x 0.25 mm)
Au Bump
The system gain and compression control can be adjusted
by choosing two independent resistors or 100k trimmers.
Maximum system gain (AGC preamplifier and the output
stage) is 38dB. The output compression threshold can be
adjusted within a 16dB range.
V
R
R
C
AGC
B
VC
TH
4
1
14
12
5
V
REGULATOR
REG
8:1
COMPRESSION
CONTROL
80k
V
B
RECT.
48k
9
13
OUT
-F
B
-A
IN
12k
10k
7
48k
800
11
2
10
8
6
3
F
GND
AIN
A
RECT
RF4A
RF4B
OUT
OUT
All resistors in ohms, all capacitors
in farads, unless otherwise stated.
BLOCK DIAGRAM
1
Doc. No. 19423 - 0 [Rev. July 200]
CHIP PIN CONNECTION
ABSOLUTE MAXIMUM RATINGS
RVC
AOUT
AIN
VB
4
VREG
5
FOUT
6
RF4A
7
PARAMETER
VALUE
3 VDC
1
2
3
Supply Voltage
Power Dissipation
25 mW
Operating Temperature Range
Storage Temperature Range
-10° C to 40° C
-20° C to 70° C
14
13
12
11
10
9
8
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
RTH
BOUT
CAGC
RECT
GND
FIN
RF4B
EXCEPT AT A STATIC-FREE WORKSTATION
ELECTRICAL CHARACTERISTICS
CONDITIONS: Frequency = 1 kHz, Temperature = 25°C, Supply Voltage VB = 1.3 V
PARAMETER
Hybrid Current
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
IAMP
VB
-
-
235
-
340
1.1
1.0
41
µA
V
Minimum Voltage
Total Harmonic Distortion
System Gain at Peak
Regulator Voltage
THD
AV
VIN = -60dBV
-
0.5
38
935
56
%
Frequency = 2.8kHz
35
890
49
dB
mV
dB
VREG
PSRR
1000
-
Power Supply Rejection Ratio
AGC
Maximum Threshold (O/P Referred)
Minimum Threshold (O/P Referred)
VC Gain Range
THMAX
THMIN
∆AVC
VIN= -60dBV, Note 2
-43
-59
35
8.0
6.5
24
47
-
-41
-57
38
-39
-55
41
dBV
dBV
dB
VIN= -70dBV, RTH = 100k, Note 2
RVC = 100kΩ to 0Ω
Compression Ratio High Threshold
Compression Ratio Low Threshold
Stage A Gain
CMP-H
CMP-L
AA
VIN = -60dBV to -30dBV, RTH = 0
9.0
7.3
27
10.0
9.0
30
ratio
ratio
dB
VIN = -70dBV to -40dBV, RTH = 100kΩ
VIN = -70dBV
Note 1
Compression Gain Range
AGC Time Consrtant
OUTPUT STAGE
ARANGE
53
55
dB
270
-
ms
τAGC
Gain
AB
-
-
11
24
-
-
dB
Output Resistance
ROP
kΩ
All parameters and switches remain as shown in the Test Circuit unless otherwise stated in the CONDITIONS column.
NOTE: 1. ARANGE = AA - AA[VIN = -20dBV, RTH = 100k]
2. Measured at output of Stage A
19423 - 0
2
V
B
C7
0µ15
R
=100k
vc
RTH =0
REGULATOR
C2
0µ1
8:1
COMPRESSION
CONTROL
80k
V
RECT.
B
C8
33n
48k
V
OUT
-F
B
-A
V
12k
10k
IN
48k
50k
800
50k
C6
22n
C5
0µ1
All resistors in ohms, all capacitors
in farads, unless otherwise stated.
Fig. 1 Production Test Circuit
CHIP DIMENSIONS
94.00 + / - 2.00
18.43
15.20
13.35
10.99
13.23
10.99
2
6
1
4
5
3
7
11.91
11.91
Y
16.08
20.09
36.19
48.01 - 2.00
X
9
6.46
TYP
14
13
12
11
10
8
12.21
10.99
15.35
16.41
5.92
TYP
16.22
10.99
Dimensioning units are MILS
DOCUMENT IDENTIFICATION:
DATA SHEET
GENNUM CORPORATION
MAILING ADDRESS:
The product is in production. Gennum reserves the right to make
changes at any time to improve reliability, function or design, in
order to provide the best product possible.
P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax +1 (905) 632-2814
SHIPPING ADDRESS:
970 Fraser Drive, Burlington, Ontario, Canada L7L 5P5
REVISION NOTES:
New Document
GENNUM JAPAN CORPORATION
C-101, Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168-0081, Japan
Tel. +81 (3) 3334-7700 Fax: +81 (3) 3247-8839
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
© Copyright July 2001 Gennum Corporation. All rights reserved.
Printed in Canada.
19423 - 0
3
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