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Dual operational transconductance amplifier

LM13700 Basic Circuit

Build a basic LM13700 circuit with labeled pins, component values and connection guidance.

Package view

LM13700 in a circuit

A millivolt input and a resistive load reveal the OTA principle.

LM13700 physical IC on split fifteen-volt rails, 150 kilohm bias resistor, two-millivolt input and ten-kilohm output load.
Matching node labels connect. Calculated signal amplitudes exclude DC offset and tolerances.

Connect it, step by step

Follow the component values and pin connections

Connect both rails

Connect +15 V to pin 11 and −15 V to pin 6, with local bypass to the supply midpoint.

Set and limit bias

Feed IABC A1 through 150 kΩ from GND; never short this pin directly to GND.

Compare signal amplitudes

Observe the AC output across 10 kΩ. Changing the bias resistor changes the nominal gain.

Component view