LM239D ON Semiconductor, LM239D Datasheet - Page 6

• Manufacturer Part Number: LM239D
• Description: Comparator ICs 3-36V Qud Comparator
• Manufacturer: ON Semiconductor

Specifications of LM239D

• Number Of Channels: 4 Channels
• Output Type: Open Collector
• Response Time: 1.3 us
• Offset Voltage (max): 5 mV
• Input Bias Current (max): 250 nA
• Supply Voltage (max): 36 V
• Supply Voltage (min): 3 V
• Supply Current (max): 2 mA
• Maximum Power Dissipation: 1000 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-14
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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 (V
situation input resistors < 10 kW should be used. The
These quad comparators feature high gain, wide
V
in
D1 prevents input from going negative by more than 0.6 V.
Figure 9. Zero Crossing Detector
8.2 k
R1
D1
R3 ≤
R5
10
220 k
6.8 k
(Single Supply)
R2
R4
for small error in zero crossing
R1 + R2 = R3
220 k
15 k
R5
R3
OL
to V
*
)
+15 V
OH
10 M
). To alleviate this
APPLICATIONS INFORMATION
10 k
V
O
http://onsemi.com
6
V
in
addition of positive feedback (< 10 mV) is also
recommended. It is good design practice to ground all
unused input pins.
voltages without damaging the comparator’s inputs.
Voltages more negative than −300 mV should not be used.
Differential input voltages may be larger than supply
V
in(min)
Figure 10. Zero Crossing Detector
≈ 0.4 V peak for 1% phase distortion (Dq).
*
+
V
V
CC
EE
(Split Supplies)
10 k
V
O
V
V
V
V
in
CC
O
EE
V
Dq
in(min)
q
q