RoHS Compliance Information	Size in Kbytes	Date
LM12CL 80W Operational Amplifier	414 Kbytes	16-Sep-08	Download
LM12CL 80W Operational Amplifier (Japanese)	415 Kbytes

Obsolete Versions

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:

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 BV_CEO 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 common-mode 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 servo-control 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.

Application Notes

Title	Size in Kbytes	Date
AN-446: A 150W IC Op Amp Simplifies Design of Power Circuits	252 Kbytes	4-Nov-95	Download
AN-446B: Application Note 446B A Monolithic Power Op Amp	1047 Kbytes	1-May-98	Download
AN-706: Application Note 706 LM628/629 User Guide	332 Kbytes	26-Sep-02	Download

More Application Notes

Title	Size in Kbytes	Date
AN-184: Application Note 184 References for A/D Converters	64 Kbytes	3-Oct-02	Download
AN-184 (Japanese): Application Note 184 References for A/D Converters	124 Kbytes
AN-173: Application Note 173 IC Zener Eases Reference Design	54 Kbytes	1-Oct-02	Download
AN-79: Application Note 79 IC Preamplifier Challenges Choppers on Drift	380 Kbytes	1-Oct-02	Download
AN-460: Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors	306 Kbytes	20-Sep-02	Download
AN-460 (Japanese): Application Note 460 LM34/LM35 Precision Monolithic Temperature Sensors	322 Kbytes
AN-97: Application Note 97 Versatile Timer Operates from Microseconds to Hours	457 Kbytes	24-Feb-99	Download
AN-242: Application Note 242 Applying a New Precision Op Amp	383 Kbytes	4-Oct-04	Download
AN-298: Application Note 298 Isolation Techniques for Signal Conditioning	379 Kbytes	2-Oct-02	Download
AN-247: Application Note 247 Using the ADC0808/ADC0809 8-Bit µP Compatible A/D Converters with 8-Channel Analog Multiplexer	547 Kbytes	3-Oct-02	Download
AN-182: Application Note 182 Improving Power Supply Reliability with IC Power Regulators	27 Kbytes	3-Oct-02	Download
AN-241: Application Note 241 Working with High Impedance Op Amps	130 Kbytes	4-Oct-04	Download
AN-178: Application Note 178 Applications for an Adjustable IC Power Regulator	40 Kbytes	3-Oct-02	Download
AN-240: Application Note 240 Wide-Range Current-to-Frequency Converters	126 Kbytes	3-Oct-02	Download
AN-262: Application Note 262 Applying Dual and Quad FET Op Amps	416 Kbytes	2-Oct-02	Download
AN-161: Application Note 161 IC Voltage Reference has 1 ppm per Degree Drift	138 Kbytes	10-Oct-02	Download
AN-300: Application Note 300 Simple Circuit Detects Loss of 4-20 mA Signal	100 Kbytes	2-Oct-02	Download
AN-288: Application Note 288 System-Oriented DC-DC Conversion Techniques	405 Kbytes	3-Oct-02	Download
AN-260: Application Note 260 A 20-Bit (1 ppm) Linear Slope-Integrating A/D Converter	148 Kbytes	3-Oct-02	Download
AN-271: Application Note 271 Applying the New CMOS MICRO-DAC	230 Kbytes	4-Oct-04	Download
AN-271 (Japanese): Application Note 271 Applying the New CMOS MICRO-DAC	342 Kbytes
AN-211: Application Note 211 New Op Amp Ideas	620 Kbytes	2-Oct-02	Download
AN-104: Application Note 104 Noise Specs Confusing?	208 Kbytes	14-Oct-02	Download
AN-299: Application Note 299 Audio Applications of Linear Integrated Circuits	232 Kbytes	24-Feb-99	Download