National Semiconductor op amp LM12CLK 80W

[Amplifier tube]

Price:
1 - 9 pairs: $ 45.00/pair
10-19 pairs: $ 43.00/pair
20-49 pairs: $ 40.00/pair
50-99 pairs: $ 38.00/pair
100-199 pairs: $ 35.00/pair
200 + pairs: $ 33.00/pair
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LM12CL
80W Operational Amplifier
General Description
The LM12 is a power op amp capable of driving ±25V at
±10A while operating from ±30V supplies. The monolithic IC
can deliver 80W of sine wave power into a 4Ω load with
0.01% distortion. Power bandwidth is 60 kHz. Further, a
peak dissipation capability of 800W allows it to handle reactive
loads such as transducers, actuators or small motors
without derating. Important features include:
• input protection
• controlled turn on
• thermal limiting
• overvoltage shutdown
• output-current limiting
• dynamic safe-area protection
The IC delivers ±10A output current at any output voltage
yet is completely protected against overloads, including
shorts to the supplies. The dynamic safe-area protection is
provided by instantaneous peak-temperature limiting within
the power transistor array.
The turn-on characteristics are controlled by keeping the
output open-circuited until the total supply voltage reaches
14V. The output is also opened as the case temperature
exceeds 150°C or as the supply voltage approaches the
BVCEO of the output transistors. The IC withstands overvoltages
to 80V.
This monolithic op amp is compensated for unity-gain feedback,
with a small-signal bandwidth of 700 kHz. Slew rate is
9V/μs, even as a follower. Distortion and capacitive-load
stability rival that of the best designs using complementary
output transistors. Further, the IC withstands large differential
input voltages and is well behaved should the commonmode
range be exceeded.
The LM12 establishes that monolithic ICs can deliver considerable
output power without resorting to complex switching
schemes. Devices can be paralleled or bridged for even
greater output capability. Applications include operational
power supplies, high-voltage regulators, high-quality audio
amplifiers, tape-head positioners, x-y plotters or other servocontrol
systems.
The LM12 is supplied in a four-lead, TO-3 package with V−
on the case. A gold-eutectic die-attach to a molybdenum
interface is used to avoid thermal fatigue problems. The
LM12 is specified for either military or commercial temperature
range.