LM13700MX National Semiconductor, LM13700MX Datasheet - Page 8
LM13700MX
Manufacturer Part Number
LM13700MX
Description
IC,Operational Amplifier,DUAL,BIPOLAR,SOP,16PIN,PLASTIC
Manufacturer
National Semiconductor
Datasheet
1.LM13700MX.pdf
(26 pages)
Specifications of LM13700MX
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Applications
Voltage Controlled Amplifiers
For optimum signal-to-noise performance, I
large as possible as shown by the Output Voltage vs. Ampli-
fier Bias Current graph. Larger amplitudes of input signal
also improve the S/N ratio. The linearizing diodes help here
by allowing larger input signals for the same output distortion
as shown by the Distortion vs. Differential Input Voltage
graph. S/N may be optimized by adjusting the magnitude of
the input signal via R
below some desired level. The output voltage swing can
then be set at any level by selecting R
IN
(Figure 2) until the output distortion is
L
.
FIGURE 2. Voltage Controlled Amplifier
ABC
should be as
FIGURE 1. Linearizing Diodes
(Continued)
8
Although the noise contribution of the linearizing diodes is
negligible relative to the contribution of the amplifier’s inter-
nal transistors, I
mizes the dynamic junction resistance of the diodes (r
maximizes their linearizing action when balanced against
R
specific application demands otherwise.
IN
. A value of 1 mA is recommended for I
D
should be as large as possible. This mini-
00798109
00798108
D
unless the
e
) and