From 718255ce3a8e4d6f47dbfdf6e321d9502ddb5362 Mon Sep 17 00:00:00 2001
From: Arpit Sharma
Date: Fri, 21 Oct 2022 23:08:19 +0530
Subject: LM13700 Operational Transconductance Amplifier IC

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+# LM13700 Operational Transconductance Amplifier IC
+
+The LM13700 is a current controlled, additional output buffer-equipped, differential input, transconductance amplifier with two channels. The two amplifiers operate independently, sharing a common supply. It makes use of linearizing diodes, using which higher input levels are permitted with less distortion. It has improved SNR also.
+
+
+## Usage/Examples
+
+VCA (Voltage Controlled Amplifier)
+
+ACG (Automatic Gain Contol) Amplifier
+
+VCO (Voltage controlled Oscillator)
+
+PLL (Phase Locked loop)
+
+Four Quadrant Multiplier
+
+Amplitude Modulator
+
+## Documentation
+
+To know the details of LM13700 IC please refer to this link [LM13700_datasheet.](https://www.ti.com/lit/ds/symlink/lm13700.pdf)
+
+## Comments/Notes
+
+Please note this is a complete analog IC. Due to the improper modeling of Darlington pair at the output terminals, this IC is producing improper output. The shape of the output waveform is fine but the output is highly DC shifted & also it's peak to peak value is very low. Therefore it is suggested to use this IC only after replacing the subcircuit with a proper working Darlington pair.
+
+## Contributor
+
+Name: Arpit Sharma  
+Email: arpitniraliya306@gmail.com  
+Year: 2022  
+Position: FOSSEE Summer Fellowship Intern 2022
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