參數(shù)資料
型號(hào)： LM13700N
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 運(yùn)動(dòng)控制電子
英文描述： Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers
中文描述： DUAL OP-AMP, 4000 uV OFFSET-MAX, 2 MHz BAND WIDTH, PDIP16
封裝： PLASTIC, DIP-16
文件頁(yè)數(shù)： 7/24頁(yè)
文件大?。?/td> 633K
代理商： LM13700N
Applications:
Voltage Controlled Amplifiers
(Continued)
maximizes their linearizing action when balanced against
R
. A value of 1 mA is recommended for I
D
unless the spe-
cific application demands otherwise.
Stereo Volume Control
The circuit of Figure 4uses 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
is
provided to minimize the output offset voltage and may be
replaced with two 510
resistors inAC-coupled applications.
For the component values given, amplifier gain is derived for
Figure 2 as being:
If V
is derived from a second signal source then the circuit
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
x I
D
R
/2(V + 1.4V) into I
. The circuit of Fig-
ure 6 adds R
to provide this current, resulting in a
four-quadrant multiplier where R
is trimmed such that V
O
=
0V for V
IN2
= 0V. R
M
also serves as the load resistor for I
O
.
DS007981-9
FIGURE 2. Voltage Controlled Amplifier
DS007981-10
FIGURE 3. Equivalent VCA Input Circuit
www.national.com
7
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM13700N/A+ 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transconductance Operational Amplifier
LM13700N/B+ 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transconductance Operational Amplifier
LM13700N/NOPB 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
LM137-220M 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Regulator
LM137-220M-8QR-B 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Voltage Regulator
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