THAT1243 ETC [List of Unclassifed Manufacturers], THAT1243 Datasheet

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THAT1243

Manufacturer Part Number
THAT1243
Description
Balanced Line Receiver ICs
Manufacturer
ETC [List of Unclassifed Manufacturers]
Datasheet
T H A T
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amplifiers are designed primarily for use as audio
balanced line receivers. Gains of 0 db, -3 dB, and
-6 dB are available to suit various applications re-
quirements.
the Burr-Brown INA137 and Analog Devices
SSM2143, while the THAT 1240 is drop-in com-
patible with the SSM2140.
mon-mode rejection, slew rates of 12 V/ms, a
The THAT 124x series of precision differential
The THAT 1246 is drop-in compatible with
All devices exhibit 90 dB of typical com-
High CMRR: typically 90dB at 60Hz
Wide bandwidth and high slew rate
Low distortion and low noise
Available in 0 dB, -3 dB, and -6 dB
versions
Pin compatible with SSM2143 and
INA137
In+
In-
Figure 1. THAT1240-series equivalent circuit diagram
FEATURES
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: +1 (508) 478-9200; Fax: +1 (508) 478-0990; Web: www.thatcorp.com
C o r p o r a t i o n
Vee
Vcc
NC
Description
Sense
Vout
Ref
20MHz bandwidth, and 0.0006% THD. Both sur-
face-mount and DIP packages are available.
obtain the precision resistor matching needed for
high CMR performance. Fashioned in THAT Cor-
poration's proprietary dielectric isolation (DI)
process, the THAT 124x series provides the sonic
benefit of discrete designs, with the compact size,
reliability, matching, and thermal tracking of a
fully integrated solution.
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The THAT 124x family are laser-trimmed to
Balanced Audio Line Receivers
Summing Amplifiers
Differential Amplifiers
Current Shunt Monitors
Ground Loop Eliminator
THAT 1240, 1243, 1246
Balanced Line Receiver ICs
APPLICATIONS
Table 1. 1240 Series pin assignments
Pin Name
-3 dB
-6 dB
Gain
0 dB
Sense
Vout
Vee
Vcc
Ref
NC
In+
In-
Table 2. Ordering information
Plastic DIP
1240P
1243P
1246P
DIP Pin
1
2
3
4
5
6
7
8
Plastic SO
1240S
1243S
1246S
SO Pin
1
2
3
4
5
6
7
8

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THAT1243 Summary of contents

Page 1

FEATURES · High CMRR: typically 90dB at 60Hz · Wide bandwidth and high slew rate · Low distortion and low noise · Available in 0 ...

Page 2

... Vcc x 2.4 Vee x 2 Vee x 2.4 Conditions Electrical Characteristics Conditions No signal Differential (equal and opposite swing) THAT1240 (0 dB gain) THAT1243 (-3 dB gain) THAT1246 (-6 dB gain) Common mode THAT1240 (0 dB gain) THAT1243 (-3 dB gain) THAT1246 (-6 dB gain) Common mode (all versions) Differential THAT1240 THAT1243 THAT1246 Matched source impedances ...

Page 3

... kHz THAT1240 THAT1243 THAT1246 kW 300 kW THAT1240 THAT1243 THAT1246 kW 300 THAT1240 THAT1243 THAT1246 kHz ±12 signal = 300 Vcc Sense Vout Ref ...

Page 4

... With ±18V supplies, the THAT 1240 can tolerate a maximum common mode input of 29.3 dBu. Un- der the same conditions, the THAT1243 can tolerate 30.0 dBu and the THAT 1246 can tolerate 32.9 dBu. These numbers are slightly higher than the datasheet specifications, since they’re calculated with a slightly higher supply voltage ...

Page 5

Rev. 04/29/02 Preliminary Information In Hi +24 dBu In 2 In Figure 6. Circuit for audio ADCs with balanced inputs Since R3=R4 in the THAT 1240, this equation can be simplified ...

Page 6

Page 6 - 130 dBu ´ 0775 , = line receiver 20 kHz The noise of the 249W resistor is 2.05 nV/ÖHz. We can assume that the noise contribution of R8 and R19 will ...

Page 7

Rev. 04/29/02 Preliminary Information The THAT 1240 series is available in both 8-pin mini-DIP and 8-pin SOIC packages. The package di ITEM MILLIMETERS INCHES A 9.52 0.10 0.375 ± ±0.004 B ...

Page 8

Page 8 THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 (508) 478-9200; Fax: +1 (508) 478-0990; Web: www.thatcorp.com Balanced Line Receiver ICs Notes: Preliminary Information ...

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