SNOSBW2E – NOVEMBER 1999 – REVISED MARCH 2013
LM13700 Dual Operational Transconductance Amplifiers with Linearizing Diodes and
Buffers
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FEATURES
g
m
Adjustable over 6 Decades
Excellent g
m
Linearity
Excellent Matching between Amplifiers
Linearizing Diodes
High Impedance Buffers
High Output Signal-to-Noise Ratio
DESCRIPTION
The LM13700 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.
High impedance buffers are provided which are
especially designed to complement the dynamic
range of the amplifiers. The output buffers of the
LM13700 differ from those of the LM13600 in that
their input bias currents (and hence their output DC
levels) are independent of I
ABC
. This may result in
performance superior to that of the LM13600 in audio
applications.
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APPLICATIONS
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Current-Controlled Amplifiers
Current-Controlled Impedances
Current-Controlled Filters
Current-Controlled Oscillators
Multiplexers
Timers
Sample-and-Hold circuits
Connection Diagram
Figure 1. PDIP and SOIC Packages-Top View
See Package Number D0016A or NFG0016E
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Copyright © 1999–2013, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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