Key facts
- Model
- LM32
- Category
- Other Electronics
- Documents
- 12
- Languages
- EN
- Last added
- 2012-07-04
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National Semiconductor LM32 Dual Thermal Diode Temperature Sensor Manual
The LM32 is a digital temperature sensor that measures three zones – its own die and two external thermal diodes – and communicates via National Semiconductor's SensorPath™ single‑wire bus. It offers 0.5 °C resolution, up to 255 °C measurement range, and programmable addresses for multiple devices on the same bus.
The document provides detailed pin descriptions, electrical characteristics, timing diagrams, mechanical dimensions, and application hints for PCB layout and noise mitigation. It also includes safety notices for life‑support use and compliance information.
National Semiconductor LM32 specifications
| Operating Temperature Range (LM221) | -25°C to +85°C |
|---|---|
| Supply Voltage | +3V to +20V |
| Common-Mode Rejection Ratio | 126 dB minimum |
| Supply Voltage Rejection | 120 dB |
Source: National Semiconductor LM221/LM321 Precision Preamplifiers Datasheet
All National Semiconductor LM32 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- National Semiconductor LM221/LM321 Precision Preamplifiers Datasheet 11 p
- National Semiconductor LM320L/LM79LXXAC Series Datasheet 8 p
- National Semiconductor LM3200 Miniature Adjustable Step-Down DC-DC Converter Datasheet 15 p
- National Semiconductor LM3224 Step-up PWM DC/DC Converter Datasheet 18 p
- National Semiconductor LM120/LM320 Series 3-Terminal Negative Regulators Manual 20 p
- National Semiconductor LM320L/LM79LXXAC Series 3-Terminal Negative Regulators Datasheet 8 p
- National Semiconductor LM124/LM224/LM324/LM2902 Low Power Quad Operational Amplifiers Datasheet 20 p
- National Semiconductor LM124/LM224/LM324/LM2902 Low Power Quad Operational Amplifiers Handbook 20 p
- National Semiconductor LM125/LM325/LM325A/LM126/LM326 Voltage Regulator Datasheet 8 p
- National Semiconductor LM124/LM224/LM324/LM2902 Low Power Quad Operational Amplifiers Datasheet 20 p
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the guaranteed drift of the LM321A?
The guaranteed drift of the LM321A is 0.2 µV/°C.
From: National Semiconductor LM221/LM321 Precision Preamplifiers Datasheet
What is the guaranteed drift of the LM221 series?
The guaranteed drift of the LM221 series is 1 µV/°C.
From: National Semiconductor LM221/LM321 Precision Preamplifiers Datasheet
What fixed output voltages are available for the LM320L/LM79LXXAC series?
The series provides fixed output voltages of -5 V, -12 V and -15 V.
From: National Semiconductor LM320L/LM79LXXAC Series Datasheet
What is the maximum line regulation for these regulators?
The maximum line regulation is less than 0.07 % VQ/V.
From: National Semiconductor LM320L/LM79LXXAC Series Datasheet
What is the input voltage range of the LM3200?
The LM3200 operates from 2.7 V to 5.5 V.
From: National Semiconductor LM3200 Miniature Adjustable Step-Down DC-DC Converter Datasheet
What output voltage range can the LM3200 provide?
It can be set to any voltage between 0.8 V and 3.6 V.
From: National Semiconductor LM3200 Miniature Adjustable Step-Down DC-DC Converter Datasheet