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BOB-14002

Description
SPARKFUN THAT 1206 INGENIUS BREA
CategoryDevelopment board/suite/development tools   
File Size165KB,12 Pages
ManufacturerSparkFun Electronics
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BOB-14002 Overview

SPARKFUN THAT 1206 INGENIUS BREA

BOB-14002 Parametric

Parameter NameAttribute value
typeAudio
Embedded-
IC/parts usedTHAT1206
Main attributesBalanced input receiver
What's includedplate
Auxiliary properties-
T H AT
Corporation
FEATURES
·
High CMRR: typ. 90 dB at 60 Hz
·
Extremely high common-mode input
impedance
InGenius
High-CMRR
Balanced Input Line Receiver ICs
THAT
1200, 1203, 1206
APPLICATIONS
·
Balanced Audio Line Receivers
·
Instrumentation Amplifiers
·
Differential Amplifiers
·
Transformer Front-End Replacements
·
ADC Front-Ends
·
Maintains balance under real-world
conditions
·
Transformer-like performance in an IC
·
Excellent audio performance
·
Wide bandwidth: typ. > 22 MHz
·
High slew rate: typ. 12 V/us
·
Low distortion: typ. 0.0005 % THD
·
Low noise: typ. -107 dBu
·
Several gains: 0 dB, -3 dB, & -6 dB
Description
The THAT 1200-series InGenius balanced line
receivers overcome a serious limitation of
conventional balanced input stages: poor common
mode rejection in real-world applications. While
conventional input stages measure well in the lab
and perform well on paper, they fail to live up to
their CMRR specs when fed from even slightly
unbalanced source impedances — a common
situation in almost any pro sound environment.
This is because conventional stages have low
common-mode input impedance, which interacts
with imbalances in source impedance to unbalance
common-mode signals, making them indistin-
guishable from desired, balanced signals.
Developed by Bill Whitlock of Jensen
Transformers, the patented InGenius input
stage uses clever bootstrapping to raise its
common-mode input impedance into the meg-
ohm range without the noise penalty from the
obvious solution of using high-valued resistors.
Like transformers, InGenius line receivers
maintain their high CMRR over a wide range of
source impedance imbalances — even when fed
from single-ended sources. But unlike trans-
formers, these wide bandwidth solid state de-
vices offer dc-coupling, low distortion, and
transparent sound in a small package at rea-
sonable cost.
Pin Name
R6
IN-
R7
OA1
+1
R10
24K
OA4
+1
R8
IN+
R9
+1
OA2
R5
24K
CM IN
CM OUT
REF
R11
24K
OA3
+
R3
R4
R1
R2
Vcc
Vee
Vout
DIP Pin
1
2
3
4
5
6
7
8
SO Pin
1
2
3
4
5
6
7
8
Ref
In-
In+
Vee
CM In
Vout
Vcc
CM Out
-
Table 1. 1200-series pin assignments
Cb
Part no.
THAT1200
THAT1203
THAT1206
R6 , R9
0
7
k
Ù
7
k
Ù
R7 , R8
24 kÙ
17
k
Ù
17
k
Ù
R1 , R3
6 kÙ
6
k
Ù
7
k
Ù
R2 , R4
6 kÙ
6
k
Ù
5
k
Ù
Gain
0 dB
-3 dB
-6 dB
Plastic DIP
1200P
1203P
1206P
Plastic SO
1200S
1203S
1206S
Figure 1. THAT1200-series equivalent circuit diagram
Table 2. Ordering information
Protected under U.S. Patent Numbers, 5,568,561 and 6,160,451. Additional patents pending.
InGenius is a registered trademark of THAT Corporation.
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com
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