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M20 View Datasheet(PDF) - STMicroelectronics

Part NameDescriptionManufacturer
M20 Ultra-low Current 2.4V precision analog temperature sensor ST-Microelectronics
STMicroelectronics ST-Microelectronics
M20 Datasheet PDF : 17 Pages
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STLM20
5
Capacitive load
Capacitive load
The STLM20 will handle capacitive loads of up to 300pF. Over the specified temperature
range, the STLM20 has a maximum output impedance of 160.
In a noisy environment, it may be advisable to add some filtering to minimize noise in the
output voltage. A 0.1µF capacitor added between the supply voltage and ground is
recommended.
In an extremely noisy environment, it may be necessary to add a low-pass filter network to
the output of the device. A 1µF capacitor, in addition to the output impedance of the device,
and a 200series resistor, will provide a low-pass filter that will pass the slow thermal time
constant of the STLM20, while filtering the higher frequency noise.
Figure 3. Filter network for noisy environments or capacitive loads > 300pF
0.1µF
Bypass Capacitor
0.1µF
Bypass Capacitor
CFILTER
RFILTER
GND VCC
VOUT
CL
AI12259
CFILTER
GND VCC
VOUT
RFILTER
CL
AI12260
Table 7.
Resistor/capacitor combinations for the filter network
RFILTER
CFILTER
200
1µF
470
0.1µF
680
0.01µF
1000
1000pF
10k
100pF
100k
10pF
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