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3422G-D08-T Datasheet(PDF) 5 Page - Unisonic Technologies

Part # 3422G-D08-T
Description  HIGH PERFORMANCE DUAL BIPOLAR OPERATINAL AMPLIFIER
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

3422G-D08-T Datasheet(HTML) 5 Page - Unisonic Technologies

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3422
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
5 of 6
www.unisonic.com.tw
QW-R105-029,Ba
APPLICATIONS INFORMATION
UTC 3422 IN COMPARATOR APPLICATION
The UTC 3422 is a dual bipolar operational amplifier offering a single supply operation from 3V ~ 36V with very
good performances: medium speed (25MHz), unity gain stability and low noise.
Most of operational amplifiers are not suited for comparator use because of low transition speed, output signal
incompatible with standard logics level and mainly, phase inversion. The phase inversion occures when a strong
differential signal is applied to the device inputs. The output level is then inverted and shows a wrong logic state. The
UTC 3422 does not present this problematic behaviour.
Figure 1 shows basic comparator application. Figure 2 shows the curves of the device response in standard
comparator configuration without external components.
Transition speed : Typical transition speed under a single 5V supply voltage is about 2μs from 50mV overdrive.
VOH(MIN). is 3.7V and VOL(MAX). is 0.2V (2kΩ load) making it compatible with standard logic families.
Figure 3 shows output signal transition for a 50mV input signal overdrive respectively of 3μs.
Figure 4 shows output signal transition for a 250mV input signal overdrive respectively of 1μs.
Figure.1 Basic Comparator Application
Figure.2 Operating Conditions
0
0.5
Time (0.5μs/div)
1.0
1.5
2.0
VREF
Vo
VIN+
4
2
0
3μs
6
0
0.5
Time (0.5μs/div)
1.0
1.5
2.0
VREF
Vo
VIN+
4
2
0
1μs
6
Figure.3 Transition Speed @ 50mV Overdrive
Figure.4 Transition Speed @ 250mV Overdrive


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