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PDF THAT4301 Data sheet ( Hoja de datos )

Número de pieza THAT4301
Descripción Analog Engine
Fabricantes THAT Corporation 
Logotipo THAT Corporation Logotipo



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No Preview Available ! THAT4301 Hoja de datos, Descripción, Manual

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T H AT Corporation
FEATURES
· High-Performance Voltage
Controlled Amplifier
· High-Performance RMS-Level
Detector
· Three General-Purpose Opamps
· Wide Dynamic Range: >115 dB
· Low THD: <0.03%
· Low Cost: $4.39 (‘000s)
· DIP & Surface-Mount Packages
THAT Analog Engine®
IC Dynamics Processor
THAT 4301, 4301A
APPLICATIONS
· Compressors
· Limiters
· Gates
· Expanders
· De-Essers
· Duckers
· Noise Reduction Systems
· Wide-Range Level Meters
Description
THAT 4301 Dynamics Processor, dubbed
crest factors up to 10. One opamp is dedicated
“THAT Analog Engine,” combines in a single IC
as a current-to-voltage converter for the VCA,
all the active circuitry needed to construct a
while the other two may be used for the signal
wide range of dynamics processors. The 4301
path or control voltage processing.
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The VCA provides two opposing-polarity, volt-
dynamics processors. This makes it easy to de-
age-sensitive control ports. Dynamic range ex-
sign audio compressors, limiters, gates, ex-
ceeds 115 dB, and THD is typically 0.003% at 0
panders, de-essers, duckers, noise reduction
dB gain. In the 4301A, the VCA is selected for
systems and the like. The high level of integra-
low THD at extremely high levels. The RMS de-
tion ensures excellent temperature tracking be-
tector provides accurate rms-to-dc conversion
tween the VCA and the detector, while
over an 80 dB dynamic range for signals with
minimizing the external parts count.
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18 11 17
14 13
19 -
OA1
20 +
VCC
SYM
IN VCA OUT
EC- EC+
THAT4301
-
OA3
+
12
1 IN RMS OUT
IT CT
GND VEE
+
OA2
-
2 5 4 9 10 8 6
7
Figure 1. Block Diagram (pin numbers are for DIP only)
15
16
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: +1 (508) 478-9200; Fax: +1 (508) 478-0990; Web: Dwwatwa.Sthhaetceotr4pU.co.cmom

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THAT4301 pdf
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THAT 4301 Dynamics Processor IC
Pin Name
RMS In
IT (ITime)
No Connection
RMS Out
CT (CTime)
OA2 -In
OA2 Out
OA2 +In
GND
VEE
VCC
OA3 Out
VCA Out
SYM
EC+
DIP P in
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
SO Pin
3
4
5
6
7
9
10
11
12
13
18
19
20
22
23
Pin Name
EC-
VCA In
OA1 Out
OA1 -In
OA1 +In
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
No Connection
Table 1. Pin Connections
Page 5
DIP P in
16
17
18
19
20
SO Pin
24
25
26
27
28
1
2
8
14
15
16
17
21
29
30
et4U.com
1
BA
CJ
D
0-15
P
ITEM
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
MILLIMETERS
24.8 Max.
24.2 +/-0.2
6.4 +/-0.2
7.62 +/-0.25
2.54 +/-0.15
0.46 +0.15 -0.1
1.0 +/-0.15
1.5 Typ.
0.98 Typ.
1.5
1.75
3.25 +/-0.15
4.7 Max.
0.51 Min.
2.8 Min.
0.25 +0.15 -0.05
E Ordering Information
Plastic DIP
F G DataSheet4U.comPlastic Surface Mount
4301P
4301S
4301PA
Inquire
H
I
K
N
L
M
O
INCHES
0.98 Max
0.95 +/-0.008
0.25 +/-0.008
0.30 +/-0.01
0.10 +/-0.006
0.02 +0.006 -0.004
0.04 +/-0.006
0.06 Typ.
0.04 Typ.
0.06
0.07
0.13 +/-0.006
0.19 Max.
0.02 Min.
0.11 Min.
0.01 +0.006 -0.002
1
DE
F
A
0-10
BC
I
J
H
G
ITEM MILLIMETERS
A 15.4 +/- 0.3
B 7.5 +/- 0.2
C 10.3 +/- 0.4
D 0.4 + 0.1 - 0.05
E 1.0 Typ.
F 0.85 MAX.
G 2.3 +/- 0.15
H 0.15 +/- 0.1
I 0.8
J 0.2 + 0.1 - 0.05
INCHES
0.60 +/- 0.012
0.29 +/- 0.008
0.41 +/- 0.016
0.002 +0.004 -0.002
0.039 Typ.
0.033 Max.
0.09 +/- 0.006
0.006 +/- 0.004
0.031
0.008 +0.004 -0.002
Figure 3. Plastic dual in-line package outline
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Figure 4. Plastic surface-mount package outline
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THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: +1 (508) 478-9200; Fax: +1 (508) 478-0990; Web: Dwwatwa.Sthhaetceotr4pU.co.cmom
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THAT4301 arduino
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THAT 4301 Dynamics Processor IC
Page 11
The GAIN control (R18) is used to provide static
gain or attenuation in the signal path. This control
adds up to ±130 mV offset to the output of OA2 (from
-V+ R16 R17 to -V- R16 R17), which is approximately
±20 dB change in gain of the VCA. C5 is used to atten-
uate the noise of OA2, OA1 and the resistors R8
through R16 used in the control path. All these active
and passive components produce noise which is
passed on to the control port of the VCA, causing
modulation of the signal. By itself, the 4301 VCA pro-
duces very little noise modulation, and its perfor-
mance can be significantly degraded by the use of
noisy components in the control voltage path.
Overall Result
The resulting compressor circuit provides
hard-knee compression above threshold with three
essential user-adjustable controls. The threshold of
compression may be varied over a ±30 dB range from
about –46 dBV to +14 dBV. The compression ratio
may be varied from 1:1 (no compression) to ¥:1.
And, static gain may be added up to ±20 dB. Audio
performance is excellent, with THD running below
0.05% at middle frequencies even with 10 dB of com-
pression, and an input dynamic range of over
115 dB.
Perhaps most important, this example design
only scratches the surface of the large body of appli-
cations circuits which may be constructed with THAT
4301. The combination of an accurate,
wide-dynamic-range, log-responding level detector
with a high-quality, exponentially-responding VCA
produces a versatile and powerful analog engine. The
opamps provided in the 4301 enable the designer to
configure these building blocks with few external
components to construct gates, expanders, de-essers,
noise reduction systems and the like.
For further information, samples and pricing,
please contact us at the address below.
et4U.com
DataSheet4U.com
DataShee
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THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: +1 (508) 478-9200; Fax: +1 (508) 478-0990; Web: Dwwatwa.Sthhaetceotr4pU.co.cmom

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