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LM239DR2 Scheda tecnica(PDF) 6 Page - ON Semiconductor

Il numero della parte LM239DR2
Spiegazioni elettronici  Single Supply Quad Comparators
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Produttore elettronici  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LM239DR2 Scheda tecnica(HTML) 6 Page - ON Semiconductor

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LM339, LM239, LM2901, LM2901V, NCV2901, MC3302
http://onsemi.com
6
APPLICATIONS INFORMATION
These quad comparators feature high gain, wide
bandwidth characteristics. This gives the device oscillation
tendencies if the outputs are capacitively coupled to the
inputs via stray capacitance. This oscillation manifests itself
during output transitions (VOL to VOH). To alleviate this
situation input resistors < 10 k
W should be used. The
addition of positive feedback (< 10 mV) is also
recommended. It is good design practice to ground all
unused input pins.
Differential input voltages may be larger than supply
voltages without damaging the comparator’s inputs.
Voltages more negative than −300 mV should not be used.
10
Figure 9. Zero Crossing Detector
(Single Supply)
Figure 10. Zero Crossing Detector
(Split Supplies)
Vin(min) ≈ 0.4 V peak for 1% phase distortion (Dq).
D1 prevents input from going negative by more than 0.6 V.
R1 + R2 = R3
R3
R5
for small error in zero crossing
Vin
10 k
D1
R1
8.2 k
6.8 k
R2
15 k
R3
+15 V
*
q
VCC
10 k
Vin
VEE
Vin
Vin(min)
VCC
VO
VEE
Dq
q
*
)
10 M
R5
220 k
R4
220 k
VO
VO
+
ORDERING INFORMATION
Device
Package
Shipping
LM239D
SOIC−14
55 Units/Tube
LM239DG
SOIC−14
(Pb−Free)
LM239DR2
SOIC−14
2500 / Tape & Reel
LM239DR2G
SOIC−14
(Pb−Free)
LM239DTBR2
TSSOP−14*
LM239DTBR2G
TSSOP−14*
LM239N
PDIP−14
25 Units/Rail
LM239NG
PDIP−14
(Pb−Free)
LM339D
SOIC−14
55 Units/Tube
LM339DG
SOIC−14
(Pb−Free)
LM339DR2
SOIC−14
2500 / Tape & Reel
LM339DR2G
SOIC−14
(Pb−Free)
LM339DTBR2
TSSOP−14*
LM339DTBR2G
TSSOP−14*
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.


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