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參數資料
| 型號： | OP490F |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Low Voltage Micropower Quad Operational Amplifier |
| 中文描述： | 低電壓，微功耗四運算放大器 |
| 文件頁數： | 10/16頁 |
| 文件大小： | 206K |
| 代理商： | OP490F |
REV. C
OP490
–10–
Micropower Voltage-Controlled Oscillator
An OP490 in combination with an inexpensive quad CMOS
switch comprise the precision V
CO
of Figure 5. This circuit
provides triangle and square wave outputs and draws only 75
m
A
from a 5 V supply. A acts as an integrator; S1 switches the
charging current symmetrically to yield positive and negative
ramps. The integrator is bounded by B which acts as a Schmitt
trigger with a precise hysteresis of 1.67 V, set by resistors R5,
R6, and R7, and associated CMOS switches. The resulting
1
14
2
13
3
12
4
11
5
10
6
9
7
8
S3
S4
S2
S1
CONT
IN/OUT
CONT
OUT/IN
OUT/IN
IN/OUT
IN/OUT
OUT/IN
IN/OUT
OUT/IN
CONT
CONT
V
SS
V
DD
+5V
+5V
1/4
OP490E
A
+5V
R2
200k
V
CONTROL
R1
200k
R3
100k
R4
200k
11
4
2
3
1
TRIANGLE
OUT
+5V
R8
200k
6
5
7
+5V
R5
200k
SQUARE
OUT
R6
200k
R7
200k
C1
75nF
1/4
OP490E
B
Figure 5. Micropower Voltage Controlled Oscillator
output of A is a triangle wave with upper and lower levels of
3.33 V and 1.67 V. The output of B is a square wave with almost
rail-to-rail swing. With the components shown, frequency of
operation is given by the equation:
f
V
Volts
(
Hz V
OUT
CONTROL
=
)
￥
10
/
but this is easily changed by varying C1. The circuit operates
well up to a few hundred hertz.
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| op490 | Low Voltage Micropower Quad Operational Amplifier(低電壓微功率四運放) |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| OP490FY | 制造商:Rochester Electronics LLC 功能描述:MICROPOWER QUAD OP AMP IC - Bulk 制造商:Analog Devices 功能描述: |
| OP490G | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Voltage Micropower Quad Operational Amplifier |
| OP490GBC | 制造商:Analog Devices 功能描述: |
| OP490GP | 制造商:Rochester Electronics LLC 功能描述:MICROPOWER QUAD OP AMP IC - Bulk 制造商:Analog Devices 功能描述:OP AMP QUAD MICROPOWER DIP14 490 |
| OP490GPZ | 功能描述:IC OPAMP GP 20KHZ QUAD 14DIP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:- 放大器類型:通用 電路數:4 輸出類型:- 轉換速率:0.6 V/µs 增益帶寬積:1MHz -3db帶寬:- 電流 - 輸入偏壓:45nA 電壓 - 輸入偏移:2000µV 電流 - 電源:1.4mA 電流 - 輸出 / 通道:40mA 電壓 - 電源，單路/雙路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應商設備封裝:14-TSSOP 包裝:帶卷 (TR) 其它名稱:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
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