T H AT
Corporation
FEATURES
路
路
路
路
路
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
路
路
路
路
路
Balanced Line Receiver ICs
THAT
1240, 1243, 1246
APPLICATIONS
Balanced Audio Line Receivers
Summing Amplifiers
Differential Amplifiers
Current Shunt Monitors
Ground Loop Eliminator
Description
The THAT 124x series of precision differential
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 THAT 1246 is drop-in compatible with
the Burr-Brown INA137 and Analog Devices
SSM2143, while the THAT 1240 is drop-in com-
patible with the SSM2140.
All devices exhibit 90 dB of typical com-
mon-mode rejection, slew rates of 12 V/ms, a
20MHz bandwidth, and 0.0006% THD. Both sur-
face-mount and DIP packages are available.
The THAT 124x family are laser-trimmed to
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.
Vcc
Pin Name
Ref
In-
In+
DIP Pin
1
2
3
4
5
6
7
8
SO Pin
1
2
3
4
5
6
7
8
In-
Sense
Vee
Sense
Vout
Vout
Vcc
NC
Table 1. 1240 Series pin assignments
In+
Ref
Gain
0 dB
-3 dB
Plastic DIP
1240P
1243P
1246P
Plastic SO
1240S
1243S
1246S
Vee
NC
-6 dB
Figure 1. THAT1240-series equivalent circuit diagram
Table 2. Ordering information
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
2
3
4
5
6
7
8
