that2181a THAT Corporation, that2181a Datasheet
that2181a
Manufacturer Part Number
that2181a
Description
Trimmable Ic Voltage Controlled Amplifiers
Manufacturer
THAT Corporation
Datasheet
1.THAT2181A.pdf
(10 pages)
T H A T
trolled amplifiers (VCAs) are very high-performance
current-in/current-out
ing-polarity, voltage-sensitive control ports. They offer
wide-range exponential control of gain and attenuation
with low signal distortion. The parts are selected after
packaging based primarily on after-trim THD and con-
trol-voltage feedthrough performance.
Input
Gnd
·
·
·
·
·
·
·
THAT 2181 Series integrated-circuit voltage con-
1
6
COMPENSATION
BIAS CURRENT
Wide Dynamic Range: >120 dB
Wide Gain Range: >130 dB
Exponential (dB) Gain Control
Low Distortion:
~0.0025% (typical 2181A)
~0.005% (typical 2181C)
Wide Gain-Bandwidth: 20 MHz
Dual Gain-Control Ports (pos/neg)
Pin-Compatible with 2150-Series
Figure 1. 2181 Series Equivalent Circuit Diagram
FEATURES
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
C o r p o r a t i o n
Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com
devices
with
two
Document 600030 Rev 01
oppos-
Description
MULTI-
PLIER
2k
Vbe
Iadj
Iset
mentary dielectric isolation process which offers
closely matched NPN/PNP pairs. This delivers perfor-
mance unobtainable through any conventional pro-
cess, integrated or discrete. The parts are available in
three grades, allowing the user to optimize cost vs.
performance. Both 8-pin single-in-line (SIP) and sur-
face mount (SO) packages are available.
25
The VCA design takes advantage of a fully comple-
Output
·
·
·
·
·
·
·
·
7
2
3
8
4
Sym
5
Vcc
Ec+
Ec-
V-
THAT 2181A, 2181B, 2181C
Faders
Panners
Compressors
Expanders
Equalizers
Filters
Oscillators
Automation Systems
Voltage Controlled Amplifiers
APPLICATIONS
Max Trimmed THD
@1 V, 1 kHz, 0 dB
Table 1. 2181 Series Pin Assignments
Pin Name
Output
Input
Sym
Gnd
Ec+
Ec–
Table 2. Ordering Information
0.005%
0.008%
V–
V+
0.02%
SIP Pin
Trimmable IC
2181LC 2181SC
2181LA 2181SA
2181LB 2181SB
1
2
3
4
5
6
8
Plastic
7
SIP
SO Pin
Plastic
1
2
3
4
5
6
7
8
SO
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