參數資料
型號: LTC6993HDCB-3#TRPBF
廠商: Linear Technology
文件頁數: 6/26頁
文件大?。?/td> 0K
描述: IC MONOSTABLE MULTIVIBRATOR 6DFN
產品培訓模塊: TimerBlox Family Timing Devices
特色產品: TimerBlox?
標準包裝: 2,500
系列: LTC®6993
邏輯類型: 單穩(wěn)態(tài)
獨立電路: 1
施密特觸發(fā)器輸入:
傳輸延遲: 11ns
輸出電流高,低: 16mA,16mA
電源電壓: 2.25 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 6-WFDFN 裸露焊盤
供應商設備封裝: 6-DFN-EP(2x3)
包裝: 帶卷 (TR)
配用: DC1562A-D-ND - BOARD EVAL LTC6992-2
LTC6993-1/LTC6993-2
LTC6993-3/LTC6993-4
14
69931234fb
OPERATION
Monostable Multivibrator (One Shot)
The LTC6993 is a monostable multivibrator. A trigger
signal on the TRIG input will force the output to the active
(unstable) state for a programmable duration. This type
of circuit is commonly referred to as a one-shot pulse
generator.
Figures 3 details the basic operation. A rising edge on
the TRIG pin initiates the output pulse. The pulse width
(tOUT) is determined by the NDIV setting and by the resis-
tor (RSET) connected to the SET pin. Subsequent rising
edges on TRIG have no affect until the completion of the
one shot and for a short rearming time (tARM) thereafter.
To ensure proper operation, positive and negative TRIG
pulses should be at least tWIDTH wide.
The LTC6993-2 and LTC6993-4 allow the output pulse to
be “retriggered”. As shown in Figure 4, the output pulse
will stay high until tOUT after the last rising-edge on TRIG.
Successive trigger signals can extend the pulse width in-
definitely. Consecutive trigger signals must be separated
by tRETRIG to be recognized.
Negative Trigger Versions
In addition to the retrigger option, the LTC6993 family also
includesnegativeinput(falling-edge)versions.Thesefour
combinations are detailed in Table 2.
Table 2. Retrigger and Input Polarity Options
DEVICE
INPUT POLARITY
RETRIGGER
LTC6993-1
Rising-Edge
No
LTC6993-2
Rising-Edge
Yes
LTC6993-3
Falling-Edge
No
LTC6993-4
Falling-Edge
Yes
Output Polarity (POL Bit)
Each variety of LTC6993 also offers the ability to invert
the output, producing negative pulses. This option is
programmed, along with NDIV, by the choice of DIVCODE.
(TheprevioussectiondescribeshowtoprogramDIVCODE
using the DIV pin).
Figure 3. Non-Retriggering Timing Diagram (LTC6993-1, POL = 0)
Figure 4. Retriggering Timing Diagram (LTC6993-2, POL = 0)
tPD
tWIDTH
tRETRIG
TRIG
OUT
tOUT
tPD
tOUT
69931234 F04
tPD
TRIG
OUT
tPD
tARM
tWIDTH
tOUT
69931234 F03
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