title: List of linear integrated circuits
text: # List of linear integrated circuits
  
  The following is a list of linear integrated circuits. Many were among the first analog integrated circuits commercially produced; some were groundbreaking innovations, and many are still being used.
  
  | Part number | Predecessor | Obsolete? | Description |
  | - | - | - | - |
  | 555 timer IC | | No | Timer, pulse generation, and oscillator applications. |
  | 78xx | | No | Family of self-contained fixed linear voltage regulator integrated circuits. |
  | Current conveyor | | | Electronic amplifier with unity gain. Three versions of generations of the idealised device, CCI, CCII and CCIII. |
  | Low-dropout regulator (LDO) | | | DC linear voltage regulator that can regulate the output voltage even when the supply voltage is very close to the output voltage. |
  | Hitachi HA12043 | | Yes | CX noise reduction system for phonograph records in the 1980s. |
  | Hitachi HA12044 | | Yes | CX noise reduction system for phonograph records in the 1980s. |
  | MK484 | | | Fully functional AM radio detector on a chip. Constructed in a TO-92 case. |
  | NE612 | | | Oscillator and a mixer. Used in ham radio applications. |
  | Operational amplifier | | | DC-coupled high-gain electronic voltage amplifier with a differential input and, usually, a single-ended output. |
  | Telefunken U401B | | Yes | High quality High Com analogue compander for audio in the 1970s. |
  | Telefunken U401BG | Telefunken U401B | Yes | High quality High Com analogue compander for audio in the 1970s. |
  | Telefunken U401BR | Telefunken U401BG | Yes | High quality High Com analogue compander for audio in the 1970s/1980s. |
  | Telefunken U2141B | | Yes | CX noise reduction system for phonograph records in the 1980s. |
  | ZN414 | | | Single-chip AM radio integrated circuit from 1972. |
  | LM317 | | | Adjustable 1.5 A positive voltage regulator (1.25 V-37 V) |
  | LM13700 | | | Two current controlled operational transconductance amplifiers (OTA), each having differential inputs and a push-pull output. |
  | LM393 | | No | Dual Differential Comparator |
  | LM358 | | No | Low power, wide supply range dual op-amps |
  | LM386 | | | Low voltage audio power amplifier |
  | LM3875 | | | High-performance 56 W audio power amplifier |
  