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PDF THAT1200-Demo Data sheet ( Hoja de datos )
| Número de pieza | THAT1200-Demo | |
| Descripción | Line Receiver IC Demonstration System | |
| Fabricantes | THAT Corporation | |
| Logotipo |  |
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T H AT Corporation
InGenius® Line Receiver IC
Demonstration System
THAT 1200-Demo
Description
The THAT1200 Demonstration System is a
self-contained circuit board that simplifies
evaluation of the THAT1200, THAT1203, and
THAT1206 InGenius® line receiver ICs. Com-
pletely assembled and tested, this system
comes with XLR connectors for signal input
and output, and a 3 pin header for connection
to an external regulated DC power supply.
J1 is a Female XLR connector that can ac-
cept a balanced or unbalanced input signal,
while P1, a male XLR connector, delivers an
unbalanced output from the IC line receiver.
An external ±15V power supply should be con-
nected via header P2 (labeled CN1 on some
older revisions of the PCB fabrication).
C1-C3 shunt unwanted RFI currents to
chassis ground. The "T" arrangement of these
components minimizes CMRR degradation at
high frequencies resulting from any mismatch
between C1 and C2, (the shunt paths for each
input share C3, and C3's impedance domi-
nates that of C1 and C2). R2 and R3 further
improve RFI rejection.
InGenius circuit operation is enabled by
bootstrapping the IC’s common mode input
impedance via C4. CMout is the output of an
on-board amplifier connected to sample the
common mode voltage at pins 2 and 3. CMin
uses the AC coupled version of this voltage to
bootstrap the internal resistors provided to
reference the inputs to the Ref pin (typically
connected to ground) and to provided a return
for the input bias currents when the IC is AC
R4
0R
J1 (INPUT)
XLR-FEMALE
21
3
5 4231
TP6
R2
100R
C3
C1
470p
100p C2
R3 470p
100R
RFI Protection
See applications section
of the THAT1200 datsheet
for alternatives
P2
3
2
1
INPUT
POWER
D1
1N4004
+15
TP1
C7
22u TP2
D2
1N4004
C8
22u
TP3
R6
4k75
-15
+15
P1 (OUTPUT)
XLR-M
C4
220u
28
In- 7
CMout
5
CMin
Vcc
Out
Ref
3 Vee
In+ 1
4
R5
0R
C5
100n
6 R1
51R
U1
THAT1206
12
3
13245
TP4
TP5
C6
100n
-15
600036 Rev. 00D
Figure 1. THAT1200 Demonstration System Schematic
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com
1 page | ||
| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet THAT1200-Demo.PDF ] | |
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