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參數(shù)資料
| 型號： | LM13700 |
| 廠商： | National Semiconductor Corporation |
| 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： | 雙路運算跨導放大器的線性化二極管和緩沖器 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大?。?/td> | 633K |
| 代理商： | LM13700 |
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
相關PDF資料 |
PDF描述 |
|---|---|
| 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 |
| LM1391 | LM1391 Phase-Locked Loop |
| LM1391N | LM1391 Phase-Locked Loop |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM13700A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
| LM13700AN | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| 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 |
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