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參數(shù)資料
| 型號(hào)： | LM322N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 模擬波形發(fā)生器 |
| 英文描述： | Precision Timers |
| 中文描述： | RECTANGULAR, TIMER, PDIP14 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-14 |
| 文件頁(yè)數(shù)： | 5/14頁(yè) |
| 文件大?。?/td> | 281K |
| 代理商： | LM322N |
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Functional Diagram
TL/H/7768–9
Timing Diagram
TL/H/7768–10
Pin Function Description
One of the main features of the LM122 is its great versatility.
Since this device is unique, a description of the functions
and limitations of each pin is in order. This will make it much
easier to follow the discussion of the various applications
presented in this note.
V
a
is the positive supply terminal of the LM122. When us-
ing a single supply, this terminal may be driven by any volt-
age between 4.5V and 40V. The effect of supply variations
on timing period is less than 0.005%/V, so supplies with
high ripple content may be used without causing pulse width
changes. Supply bypassing on
V
a
is not generally needed
but may be necessary when driving highly reactive loads.
Quiescent current drawn from the
V
a
terminal is typically
2.5 mA, independent of the supply voltage. Of course, addi-
tional current will be drawn if the reference is externally
loaded.
The
V
REF
pin is the output of a 3.15V series regulator refer-
enced to the ground pin. Up to 5.0 mA can be drawn from
this pin for driving external networks. In most applications
the timing resistor is tied to
V
REF
, but it need not be in
situations where a more linear charging current is required.
The regulated voltage is very useful in applications where
the LM122 is not used as a timer; such as switching regula-
tors, variable reference comparators, and temperature con-
5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM122H-MIL | Analog Timer Circuit |
| LM322 | Precision Timers |
| LM323A | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| LM323H | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| LM323KSTEEL | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM322N/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog Timer Circuit |
| LM323 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Three-terminal 3 A adjustable voltage regulators |
| LM323/D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Positive Voltage Regulators |
| LM323_02 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:3.0 A Positive Voltage Regulators |
| LM323_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Three-terminal 3 A adjustable voltage regulators |
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