THAT1280 THAT Corporation, THAT1280 Datasheet - Page 6

• Manufacturer Part Number: THAT1280
• Description: (THAT128x) Dual Balanced Line Receiver ICs
• Manufacturer: THAT Corporation

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Document 600114 Rev 01
voltage range to be accommodated, and the power
supply voltages used within the circuit.
ratio, the input stage should be selected and config-
ured for the highest possible gain that will ensure
that maximum-level input signals will not clip the
input stage or succeeding stages. For example, with
±18 V supply rails, the 1280-series parts have a
maximum output signal swing of +23 dBu. In order
to
maximum gain for the stage is -1 dB. With ±15 V
supply rails, the maximum output signal swing is
~+21.1 dBu; here, -3 dB is the maximum gain. In
accommodate +24
To minimize noise and maximize signal-to-noise
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THAT Corporation; 45 Sumner Street; Milford, MA 01757-1656; USA
dBu
input signals,
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the
Page 6 of 10
each case, a 1283 configured for -3 dB gain is the
ideal choice.
provide enough headroom at its output to support a
+24 dBu input signal.
-6 dB gain) will increase noise, thus reducing
dynamic range, by attenuating the input signal more
than necessary to support a +24 dBu input.
THAT recommends the -3 dB input configuration
possible only with the 1283 in order to preserve
dynamic range within a reasonable range of power
supply voltages and external headroom limits.
In fact, for most professional audio applications,
The 1280 (0 dB gain only) will not
Dual Balanced Line Receiver ICs
The 1286 (configured for
THAT 1280 Series
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