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Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers
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LM13600
Dual Operational Transconductance Amplifiers with
Linearizing Diodes and Buffers
General Description
The LM13600 series consists of two current controlled
transconductance amplifiers each with differential inputs and
a push-pull output. The two amplifiers share common supplies but otherwise operate independently. Linearizing diodes are provided at the inputs to reduce distortion and allow
higher input levels. The result is a 10 dB signal-to-noise improvement referenced to 0.5 percent THD. Controlled impedance buffers which are especially designed to complement the dynamic range of the amplifiers are provided. Features
n gm adjustable over 6 decades
n Excellent gm linearity Excellent matching between amplifiers
Linearizing diodes
Controlled impedance buffers
High output signal-to-noise ratio Applications n Current-controlled amplifiers
Current-controlled impedances
Current-controlled filters
Current-controlled oscillators
Multiplexers
Timers
Sample and hold circuits Connection Diagram
Dual-In-Line and Small Outline Packages DS007980-2 Top View
Order Number LM13600M, LM13600N or LM13600AN
See NS Package Number M16A or N16A © 1999 National Semiconductor Corporation DS007980 www.national.com LM13600 Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers May 1998 Absolute Maximum Ratings (Note 1) Operating Temperature Range
0˚C to +70˚C …