TEXAS INSTRUMENTS LM13700 Dual Transconductance Amplifier, SOIC-16, 2MHz

The TEXAS INSTRUMENTS LM13700M/NOPB is a sophisticated dual operational transconductance amplifier, engineered for precision analogue signal processing. Each amplifier features differential inputs and a push-pull output, operating independently while sharing common power supplies. A key innovation is the inclusion of integrated linearizing diodes at the inputs, which significantly reduce harmonic distortion and permit higher input signal levels. This design delivers a notable 10dB improvement in signal-to-noise ratio when referenced to 0.5% total harmonic distortion (THD), ensuring cleaner audio and signal fidelity.

High-impedance output buffers are specially designed to match the dynamic range of the core amplifiers, enhancing overall performance. Notably, the buffers in the LM13700 differ from earlier designs, as their input bias currents—and consequently their output DC levels—are independent of the amplifier bias current (I_ABC). This architectural advancement can yield superior audio performance compared to previous generations like the LM13600.

The device offers exceptional technical characteristics, including an adjustable transconductance (g_m) spanning six decades with excellent linearity. The two amplifiers are very well matched, which is critical for stereo and differential applications. Its green product designation indicates it is manufactured without antimony or brominated flame retardants (no Sb/Br).

Key Specifications & Features

• Amplifier Type: Dual Transconductance
• Gain Bandwidth Product: 2 MHz
• Slew Rate: 50 V/µs (Typical)
• Supply Voltage Range: 9.5V to 32V (Single Supply) or ±4.75V to ±16V (Dual Supply)
• Input Offset Voltage: 300 µV
• Input Bias Current: 400 nA
• Package: 16-pin SOIC (Surface Mount)
• Operating Temperature Range: 0°C to 70°C

Ideal for industrial control systems