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參數資料
| 型號： | LM13700N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 運動控制電子 |
| 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 |
| 文件頁數： | 13/24頁 |
| 文件大?。?/td> | 633K |
| 代理商： | LM13700N |
Voltage Controlled Filters
(Continued)
Voltage Controlled Oscillators
The classic Triangular/Square Wave VCO of Figure 15 is
one of a variety of Voltage Controlled Oscillators which may
be built utilizing the LM13700. With the component values
shown, this oscillator provides signals from 200 kHz to below
2 Hz as I
is varied from 1 mA to 10 nA. The output ampli-
tudes are set by I
x R
. Note that the peak differential input
voltage must be less than 5V to prevent zenering the inputs.
A few modifications to this circuit produce the ramp/pulse
VCO of Figure 16 When V
is high, I
is added to I
to in-
crease amplifier A1’s bias current and thus to increase the
charging rate of capacitor C. When V
is low, I
F
goes to
zero and the capacitor discharge current is set by I
C
.
The VC Lo-Pass Filter of Figure 11 may be used to produce
a high-quality sinusoidal VCO. The circuit of Figure 16 em-
ploys two LM13700 packages, with three of the amplifiers
configured as lo-pass filters and the fourth as a limiter/
inverter. The circuit oscillates at the frequency at which the
loop phase-shift is 360 or 180 for the inverter and 60 per
filter stage. This VCO operates from 5 Hz to 50 kHz with less
than 1% THD.
DS007981-21
FIGURE 14. Voltage Controlled State Variable Filter
www.national.com
13
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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:運算放大器 - 運放 RoHS:否 制造商:STMicroelectronics 通道數量:4 共模抑制比（最小值）:63 dB 輸入補償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉: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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