sm72480sdx-125 National Semiconductor Corporation, sm72480sdx-125 Datasheet - Page 14

• Manufacturer Part Number: sm72480sdx-125
• Description: Solarmagic 1.6v, Llp-6 Factory Preset Temperature Switch And Temperature Sensor
• Manufacturer: National Semiconductor Corporation

6.0 Applications Circuits
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FIGURE 4. Temperature Switch Using Push-Pull Output
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FIGURE 5. Temperature Switch Using Open-Drain Output
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Most CMOS ADCs found in microcontrollers and ASICs have a sampled data comparator input structure. When the ADC charges
the sampling cap, it requires instantaneous charge from the output of the analog source such as the SM72480 temperature sensor
and many op amps. This requirement is easily accommodated by the addition of a capacitor (C
). The size of C
depends
FILTER
FILTER
on the size of the sampling capacitor and the sampling frequency. Since not all ADCs have identical input stages, the charge
requirements will vary. This general ADC application is shown as an example only.
FIGURE 6. Suggested Connection to a Sampling Analog-to-Digital Converter Input Stage
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