Overview
The LMT01LPGM, produced by Texas Instruments, is a high-accuracy, 2-pin digital output temperature sensor. It features an easy-to-use pulse count current loop interface, making it suitable for onboard and offboard applications in automotive, industrial, and consumer markets. The device achieves a maximum ±0.5°C accuracy with a fine resolution of 0.0625°C over a temperature range of –20°C to 90°C without the need for system calibration or hardware and software compensation.
Key Specifications
| Parameter | Value |
|---|---|
| Temperature Range | –50°C to 150°C |
| Accuracy | –20°C to 90°C: ±0.5°C (max), 90°C to 150°C: ±0.625°C (max), –50°C to –20°C: ±0.7°C (max) |
| Resolution | 0.0625°C |
| Communication Frequency | 88 kHz |
| Conversion Current | 34 µA |
| Conversion and Data-Transmission Period | 100 ms (max) |
| Supply Voltage | 2 V to 5.5 V (VP–VN) |
| Package Type | TO-92/LPG (3.1 mm × 4 mm × 1.5 mm) |
Key Features
- Precision digital temperature measurement simplified in a 2-pin package.
- Pulse count current loop interface easily read by a processor, with the number of output pulses proportional to temperature.
- Integrated EMI immunity and simple 2-pin architecture suitable for onboard and offboard temperature sensing in noisy environments.
- Can be easily converted into a two-wire temperature probe with a wire length up to two meters.
- Direct interface with GPIO or comparator input, simplifying hardware implementation.
Applications
- Digital output wired probes.
- White goods.
- HVAC systems.
- Power supplies.
- Battery management systems.
Q & A
- What is the temperature accuracy of the LMT01LPGM?
The LMT01LPGM achieves a maximum ±0.5°C accuracy over a temperature range of –20°C to 90°C, ±0.625°C from 90°C to 150°C, and ±0.7°C from –50°C to –20°C.
- What is the resolution of the LMT01LPGM?
The resolution is 0.0625°C.
- What is the communication frequency of the LMT01LPGM?
The communication frequency is 88 kHz.
- How does the LMT01LPGM interface with other components?
The LMT01LPGM interfaces directly with a GPIO or comparator input, simplifying hardware implementation.
- What is the supply voltage range for the LMT01LPGM?
The supply voltage range is 2 V to 5.5 V (VP–VN).
- What are the package options for the LMT01LPGM?
The LMT01LPGM is available in TO-92/LPG packages (3.1 mm × 4 mm × 1.5 mm).
- Can the LMT01LPGM be used in noisy environments?
- How often does the LMT01LPGM transmit data?
The LMT01LPGM continuously converts and transmits data every 100 ms (max) when power is applied.
- Can the LMT01LPGM be used as a two-wire temperature probe?
- Is there an automotive-qualified version of the LMT01LPGM?
