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參數(shù)資料
| 型號： | LM13700AN |
| 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, 2000 uV OFFSET-MAX, 2 MHz BAND WIDTH, PDIP16 |
| 封裝： | PLASTIC, DIP16 |
| 文件頁數(shù)： | 10/24頁 |
| 文件大小： | 633K |
| 代理商： | LM13700AN |
Voltage Controlled Resistors
(Continued)
Voltage Controlled Filters
OTA’s are extremely useful for implementing voltage con-
trolled filters, with the LM13700 having the advantage that
the required buffers are included on the I.C. The VC Lo-Pass
Filter of Figure 11performs as a unity-gain buffer amplifier at
frequencies below cut-off, with the cut-off frequency being
the point at which X
/g
equals the closed-loop gain of (R/
R
).At frequencies above cut-off the circuit provides a single
RC roll-off (6 dB per octave) of the input signal amplitude
with a 3 dB point defined by the given equation, where g
m
is again 19.2 x I
at room temperature. Figure 12 shows a
VC High-Pass Filter which operates in much the same man-
ner, providing a single RC roll-off below the defined cut-off
frequency.
Additional amplifiers may be used to implement higher order
filters as demonstrated by the two-pole Butterworth Lo-Pass
Filter of Figure 13 and the state variable filter of Figure 14
Due to the excellent g
tracking of the two amplifiers, these
filters perform well over several decades of frequency.
DS007981-15
FIGURE 8. Voltage Controlled Resistor, Single-Ended
DS007981-16
FIGURE 9. Voltage Controlled Resistor with Linearizing Diodes
www.national.com
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM13700M | Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers |
| LM13700N | Dual Operational Transconductance Amplifiers with Linearizing Diodes and Buffers |
| LM1391 | LM1391 Phase-Locked Loop |
| LM1391N | LM1391 Phase-Locked Loop |
| LM140JAN | Three Terminal Positive Regulators |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM13700AN/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transconductance Operational Amplifier |
| LM13700AN/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Transconductance Operational Amplifier |
| LM13700M | 功能描述:運算放大器 - 運放 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 |
| LM13700M/NOPB | 功能描述:運算放大器 - 運放 DUAL OP TRANSCOND 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 |
| LM13700M/NOPB | 制造商:Texas Instruments 功能描述:Operational Amplifier (Op-Amp) IC |
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