參數(shù)資料
型號(hào)： LM13600M
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, PDSO16
封裝： SOP-16
文件頁(yè)數(shù)： 18/24頁(yè)
文件大?。?/td> 634K
代理商： LM13600M
Additional Applications
(Continued)
into capacitor C whenever the input to A1 is brought high,
giving a ramp-rate of about 1 V/ms for the component values
shown.
The true-RMS converter of Figure 27 is essentially an auto-
matic gain control amplifier which adjusts its gain such that
the AC power at the output of amplifier A1 is constant. The
output power of amplifier A1 is monitored by squaring ampli-
fier A2 and the average compared to a reference voltage
with amplifier A3. The output of A3 provides bias current to
the diodes of A1 to attenuate the input signal. Because the
output power of A1 is held constant, the RMS value is con-
stant and the attentuation is directly proportional to the RMS
value of the input voltage. The attenuation is also propor-
tional to the diode bias current. Amplifier A4 adjusts the ratio
of currents through the diodes to be equal and therefore the
voltage at the output of A4 is proportional to the RMS value
of the input voltage. The calibration potentiometer is set such
that V
O
reads directly in RMS volts.
DS007980-32
FIGURE 25. Sample-Hold Circuit
DS007980-33
FIGURE 26. Ramp and Hold
DS007980-34
FIGURE 27. True RMS Converter
www.national.com
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相關(guān)PDF資料
PDF描述
LM13600N Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers
LM13700 Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers
LM13700AN Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers
LM13700M Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers
LM13700N Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM13600MX 制造商:Rochester Electronics LLC 功能描述:- Bulk
LM13600N 制造商:Texas Instruments 功能描述:
LM13600N/B+ 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transconductance Operational Amplifier
LM136-2.5 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Reference Diode
LM136-2.5 MD8 制造商:Texas Instruments 功能描述:VOLTAGE REFERENCE DIODE DIE - Gel-pak, waffle pack, wafer, diced wafer on film
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