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List of linear integrated circuits
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<p>The following is a list of linear integrated circuits. Many were among the first <a href="/facts/Analog_chip/JtDBJzKF">analog integrated circuits</a> commercially produced; some were groundbreaking innovations, and many are still being used. </p> <table><tbody><tr><th>Part number</th><th>Predecessor</th><th><a href="/facts/Obsolescence/IrFKfFja">Obsolete?</a></th><th>Description</th></tr><tr><td><a href="/facts/555_timer_IC/bb5YzrBk">555 timer IC</a></td><td></td><td>No</td><td><a href="/facts/Timer/ayv4L3D7">Timer</a>, pulse generation, and <a href="/facts/Electronic_oscillator/6NaXsSzJ">oscillator</a> applications.</td></tr><tr><td><a href="/facts/78xx/AJQUGNl5">78xx</a></td><td></td><td>No</td><td>Family of self-contained fixed <a href="/facts/Linear_regulator/FCB7uzRf">linear voltage regulator</a> <a href="/facts/Integrated_circuits/fjn6vg7C">integrated circuits</a>.</td></tr><tr><td><a href="/facts/Current_conveyor/NcA6MQTp">Current conveyor</a></td><td></td><td></td><td><a href="/facts/Electronic_amplifier/pnRgxncC">Electronic amplifier</a> with unity <a href="/facts/Gain_(electronics)/CWbehg27">gain</a>. Three versions of generations of the <a href="/facts/Idealization_(science_philosophy)/5LVmNhz0">idealised</a> device, CCI, CCII and CCIII.</td></tr><tr><td><a href="/facts/Low-dropout_regulator/gej19T6v">Low-dropout regulator</a> (LDO)</td><td></td><td></td><td>DC <a href="/facts/Linear_regulator/FCB7uzRf">linear voltage regulator</a> that can regulate the output voltage even when the supply voltage is very close to the output <a href="/facts/Voltage/EN2po6N2">voltage</a>.</td></tr><tr><td><a href="/facts/Hitachi_HA12043/nGHvVjUB">Hitachi HA12043</a></td><td></td><td>Yes</td><td><a href="/facts/CX_(audio)/nGHvVjUB">CX</a> <a href="/facts/Noise_reduction/9jrDQnAN">noise reduction</a> system for phonograph records in the 1980s.</td></tr><tr><td><a href="/facts/Hitachi_HA12044/nGHvVjUB">Hitachi HA12044</a></td><td></td><td>Yes</td><td><a href="/facts/CX_(audio)/nGHvVjUB">CX</a> <a href="/facts/Noise_reduction/9jrDQnAN">noise reduction</a> system for phonograph records in the 1980s.</td></tr><tr><td><a href="/facts/MK484/1CduVNzr">MK484</a></td><td></td><td></td><td>Fully functional AM radio detector on a chip. Constructed in a <a href="/facts/TO-92/IBabzYCU">TO-92</a> case.</td></tr><tr><td><a href="/facts/NE612/w6cLWScg">NE612</a></td><td></td><td></td><td>Oscillator and a mixer. Used in ham radio applications.</td></tr><tr><td><a href="/facts/Operational_amplifier/hunKdYb9">Operational amplifier</a></td><td></td><td></td><td><a href="/facts/Direct_coupling/1PvjXxLp">DC-coupled</a> high-<a href="/facts/Gain_(electronics)/CWbehg27">gain</a> electronic voltage <a href="/facts/Electronic_amplifier/pnRgxncC">amplifier</a> with a <a href="/facts/Differential_input/jusjFQKo">differential input</a> and, usually, a single-ended output.</td></tr><tr><td><a href="/facts/Telefunken_U401B/WQY1onYQ">Telefunken U401B</a></td><td></td><td>Yes</td><td>High quality <a href="/facts/High_Com/WQY1onYQ">High Com</a> analogue <a href="/facts/Compander/zsfkwSzp">compander</a> for audio in the 1970s.</td></tr><tr><td><a href="/facts/Telefunken_U401BG/WQY1onYQ">Telefunken U401BG</a></td><td><a href="/facts/Telefunken_U401B/WQY1onYQ">Telefunken U401B</a></td><td>Yes</td><td>High quality <a href="/facts/High_Com/WQY1onYQ">High Com</a> analogue <a href="/facts/Compander/zsfkwSzp">compander</a> for audio in the 1970s.</td></tr><tr><td><a href="/facts/Telefunken_U401BR/WQY1onYQ">Telefunken U401BR</a></td><td><a href="/facts/Telefunken_U401BG/WQY1onYQ">Telefunken U401BG</a></td><td>Yes</td><td>High quality <a href="/facts/High_Com/WQY1onYQ">High Com</a> analogue <a href="/facts/Compander/zsfkwSzp">compander</a> for audio in the 1970s/1980s.</td></tr><tr><td><a href="/facts/Telefunken_U2141B/nGHvVjUB">Telefunken U2141B</a></td><td></td><td>Yes</td><td><a href="/facts/CX_(audio)/nGHvVjUB">CX</a> <a href="/facts/Noise_reduction/9jrDQnAN">noise reduction</a> system for phonograph records in the 1980s.</td></tr><tr><td><a href="/facts/ZN414/4y7mco9v">ZN414</a></td><td></td><td></td><td>Single-chip <a href="/facts/AM_broadcasting/oS0rn1lg">AM radio</a> <a href="/facts/Integrated_circuit/fjn6vg7C">integrated circuit</a> from 1972.</td></tr><tr><td><a href="/facts/LM317/a19GPcjJ">LM317</a></td><td></td><td></td><td>Adjustable 1.5 A positive voltage regulator (1.25 V-37 V)</td></tr><tr><td><a href="/facts/LM13700/e34HC8K2">LM13700</a></td><td></td><td></td><td>Two current controlled <a href="/facts/Operational_transconductance_amplifier/kUVmLFtQ">operational transconductance amplifiers</a> (OTA), each having differential inputs and a push-pull output.</td></tr><tr><td>LM393</td><td></td><td>No</td><td>Dual Differential Comparator</td></tr><tr><td><a href="/facts/LM358/uNbwavE1">LM358</a></td><td></td><td>No</td><td>Low power, wide supply range dual op-amps</td></tr><tr><td><a href="/facts/LM386/IpNFVteE">LM386</a></td><td></td><td></td><td>Low voltage audio power amplifier</td></tr><tr><td><a href="/facts/LM3875/AQR4TBdW">LM3875</a></td><td></td><td></td><td>High-performance 56 W audio power amplifier</td></tr></tbody></table>