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THAT Corporation

THAT1200 Datasheet Preview

THAT1200 Datasheet

(THAT1200 / THAT1203 / THAT1206) Ingenius High-cmrr Balanced Input Line Receiver

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T H AT Corporation
FEATURES
· High common-mode rejection
(typical 90 dB at 60 Hz) maintained
under real-world conditions
· Excellent solution for hum and
groundloop suppression
· Transformer-like noise rejection in
an 8-pin IC, at fraction of
transformer cost and size
InGeniusâ High-CMRR
Balanced Input Line Receiver
THAT 1200, 1203, 1206
APPLICATIONS
· Balanced input stages
· Summing amplifiers
· Transformer front-end
replacements
· ADC front-ends
Description
The THAT 1200 series of InGenius balanced
line receivers are designed to overcome a serious
limitation of conventional balanced input stages
— notoriously poor common mode rejection in
real world applications. While conventional input
stages may exhibit good rejection characteristics
in the lab and on paper, they perform poorly
when fed from even slightly unbalanced source
impedances — a common situation in almost any
pro sound environment.
Developed by Bill Whitlock of Jensen Trans-
formers, the patented InGenius input stage uses a
unique bootstrap circuit to raise its common-
mode input impedance into the megohm range,
but without the noise penalty that comes from
high-valued resistors. InGenius line receivers
maintain their high CMRR over a wide range of
source impedance imbalances — even when fed
from single-ended sources.
IN-
Ra
Rb
IN+
OA1
+1
Rc
OA2 Rd
+1
R1
OA4
+1
R3
R2
OA3
-
+
R4
R5
Vcc
Vee
Vout
REF
Pin Name
Ref
In-
In+
Vee
CM In
Vout
Vcc
CM Out
DIP Pin
1
2
3
4
5
6
7
8
SO Pin
3
4
5
6
11
12
13
14
Table 1. 1200-series pin assignments
CM IN
CM OUT
Cb
Figure 1. THAT1200-series equivalent circuit diagram
Gain
Plastic DIP Plastic SO
0 dB
1200P
1200S
-3 dB
1203P
1203S
-6 dB
1206P
1206S
Table 2. Ordering information
Protected under U.S. Patent No. 5,568,561 and other patents pending.
InGeniusâ is a trademark of THAT Corporation.
600033 Rev 0A
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: +1 (508) 478-9200; Fax: +1 (508) 478-0990; Web: www.thatcorp.com




THAT Corporation

THAT1200 Datasheet Preview

THAT1200 Datasheet

(THAT1200 / THAT1203 / THAT1206) Ingenius High-cmrr Balanced Input Line Receiver

No Preview Available !

Page 2
InGenius Balanced Line Receiver
Preliminary Information
SPECIFICATIONS1
Absolute Maximum Ratings (TA = 25°C)
Positive Supply Voltage (VCC)
Negative Supply Voltage (VEE)
Positive Input Voltage (VIN+)
Negative Input Voltage (VIN-)
Output Short-Circuit Duration (tSH)
+18 V
-18 V
+18 V
-18 V
Continuous
Power Dissipation (PD) (TA = 75°C)
TBD mW
Operating Temperature Range (TOP)
0 to +70°C
Storage Temperature Range (TST)
-40 to +125°C
Junction Temperature (TJ)
150°C
Lead Temperature (Soldering 60 seconds) TBD °C
Recommended Operating Conditions
Parameter
Positive Supply Voltage
Negative Supply Voltage
Symbol
VCC
VEE
Conditions
Min Typ
+3
-3
Max
+18
-18
Units
V
V
Parameter
Supply Current
Input Bias Current
Input Offset Current
Input Offset Voltage
Input Voltage Range
Input Impedance
Electrical Characteristics2
Symbol
ICC
IB
Conditions
No signal
No signal; Either input
connected to GND
Min Typ Max
— 4.7 8.0
— 700 1,400
IB-OFF
VOFF
VIN-CM
VIN-DIFF
No signal
No signal
Common mode
±12.5
Differential (equal and opposite swing)
THAT 1200
21.0
THAT 1203
24.0
THAT 1206
24.0
±13.0
21.5
24.5
24.5
±140
10
ZIN-DIFF
ZIN-CM
Differential
Common mode
60 Hz
20 kHz
60 Hz
20 kHz
48.0
with bootstrap
10.0
3.2
no bootstrap
36.0
36.0
Units
mA
nA
nA
mV
V
dBu
dBu
dBu
kW
MW
MW
kW
kW
1. All specifications are subject to change without notice.
2. Unless otherwise noted, TA=25°C, VCC = +15V, VEE = -15V
3. 0 dBu = 0.775Vrms.
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: +1 (508) 478-9200; Fax: +1 (508) 478-0990; Web: www.thatcorp.com


Part Number THAT1200
Description (THAT1200 / THAT1203 / THAT1206) Ingenius High-cmrr Balanced Input Line Receiver
Maker THAT Corporation
Total Page 10 Pages
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