LM13700MX/NOPB National Semiconductor, LM13700MX/NOPB Datasheet - Page 9

• Manufacturer Part Number: LM13700MX/NOPB
• Description: IC AMP DUAL OP TRANSCOND 16-SOIC
• Manufacturer: National Semiconductor

Specifications of LM13700MX/NOPB

• Amplifier Type: Transconductance
• Number Of Circuits: 2
• Output Type: Push-Pull
• Slew Rate: 50 V/µs
• Gain Bandwidth Product: 2MHz
• Current - Input Bias: 1µA
• Voltage - Input Offset: 300µV
• Current - Supply: 2.6mA
• Current - Output / Channel: 650µA
• Voltage - Supply, Single/dual (±): 10 V ~ 36 V, ±5 V ~ 18 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Other names: *LM13700MX; *LM13700MX/NOPB; LM13700MX

Applications
Voltage Controlled Amplifiers
Stereo Volume Control
The circuit of Figure 4 uses the excellent matching of the two
LM13700 amplifiers to provide a Stereo Volume Control with
a typical channel-to-channel gain tracking of 0.3 dB. R
provided to minimize the output offset voltage and may be
replaced with two 510Ω resistors in AC-coupled applications.
For the component values given, amplifier gain is derived for
Figure 2 as being:
FIGURE 3. Equivalent VCA Input Circuit
(Continued)
P
is
9
If V
becomes an amplitude modulator or two-quadrant multiplier
as shown in Figure 5, where:
The constant term in the above equation may be cancelled
by feeding I
Figure 6 adds R
four-quadrant multiplier where R
0V for V
C
is derived from a second signal source then the circuit
IN2
= 0V. R
S
x I
D
M
R
M
to provide this current, resulting in a
C
also serves as the load resistor for I
/2(V− + 1.4V) into I
C
00798110
is trimmed such that V
O
. The circuit of
www.national.com
O
O
=
.