Specifications
| Type | Description |
|---|---|
| Part Number | LMT01 |
| Manufacturer | Texas Instruments |
| Product Type | 2-pin digital temperature sensor |
| Category | Sensor |
| Package Case | TO-92/LPG 4.00 mm x 3.15 mm; WSON/DQX 1.70 mm x 2.50 mm |
| Temperature sensing range | -50 to 150 °C; operating free-air temperature range |
| Supply voltage drop | 2 to 5.5 V; recommended operating condition, VP-VN |
| Absolute maximum voltage drop | -0.3 to 6 V; VP-VN absolute maximum rating |
| Storage temperature | -65 to 175 °C; absolute maximum rating, Tstg |
| ESD rating HBM | ±2000 V; human-body model per ANSI/ESDA/JEDEC JS-001 |
| ESD rating CDM | ±750 V; charged-device model per JEDEC JESD22-C101 |
| Temperature accuracy | ±0.5 °C max; -20°C to 90°C, VP-VN 2.15 V to 5.5 V |
| Temperature accuracy | ±0.625 °C max; 90°C to 150°C, VP-VN 2.15 V to 5.5 V |
| Temperature accuracy | ±0.7 °C max; -50°C to -20°C, VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at 150°C | -0.625 to 0.625 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at 125°C | -0.625 to 0.625 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at 120°C | -0.625 to 0.625 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at 110°C | -0.5625 to 0.5625 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at 100°C | -0.5625 to 0.5625 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at 90°C | -0.5 to 0.5 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at 25°C | min -0.5 °C, typ ±0.125 °C, max 0.5 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at -20°C | -0.5 to 0.5 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at -30°C | -0.5625 to 0.5625 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at -40°C | -0.625 to 0.625 °C; VP-VN 2.15 V to 5.5 V |
| Temperature accuracy at -50°C | min -0.6875 °C, typ ±0.4 °C, max 0.6875 °C; VP-VN 2.15 V to 5.5 V |
| Number of pulses at 0°C | min 800, typ 808, max 816 pulses; pulse count transfer function |
| Output pulse range | 15 to 3228 pulses; rated output pulse range |
| Theoretical output pulse range | 1 to 4095 pulses; theoretical maximum exceeds device rating |
| Temperature resolution | 0.0625 °C per pulse; pulse count interface |
| Low-level output current | min 28 µA, typ 34 µA, max 40 µA; IOL |
| High-level output current | min 112.5 µA, typ 125 µA, max 143 µA; IOH |
| High-to-low output current ratio | min 3.1, typ 3.7, max 4.5; output current variation |
| Accuracy sensitivity to supply change | typ 40 m°C/V, max 133 m°C/V; 2.15 V <= VP-VN <= 5.0 V, endpoint calculation |
| Leakage current | typ 0.002 µA, max 3.5 µA; VP-VN, VDD <= 0.4 V |
| Thermal response time in stirred oil | 0.4 s; DQX/WSON package only, time to 63% of final value |
| Thermal response time in stirred oil | 0.8 s; LPG/TO-92 package only, time to 63% of final value |
| Thermal response time in still air | 9.4 s; DQX/WSON package only, time to 63% of final value |
| Thermal response time in still air | 28 s; LPG/TO-92 package only, time to 63% of final value |
| Output current rise and fall time | typ 1.45 µs; CL=10 pF, RL=8 kΩ |
| Output current pulse frequency | min 82 kHz, typ 88 kHz, max 94 kHz; fP |
| Output current duty cycle | min 40%, typ 50%, max 60%; pulse output |
| Temperature conversion time | min 46 ms, typ 50 ms, max 54 ms; 2.15 V to 5.5 V, includes power-up time, typically 3 ms after 1.2 V POR threshold exceeded |
| Data transmission time | min 44 ms, typ 47 ms, max 50 ms; pulse data transmission |
| Continuous conversion plus data transmission period | 100 ms; feature summary |
| Communication frequency | 88 kHz; pulse count interface feature summary |
| Maximum probe wire length | Up to 2 m; two-wire temperature probe application |
| TO-92/LPG digital output code at -50°C | min 15, typ 26, max 37 pulses; pulse count to temperature LUT |
| TO-92/LPG digital output code at 0°C | min 800, typ 808, max 816 pulses; pulse count to temperature LUT |
| TO-92/LPG digital output code at 25°C | approximately 1204 pulses typ; inferred from 0.0625°C resolution and 808 pulses at 0°C |
| TO-92/LPG digital output code at 150°C | min 3208, typ 3218, max 3228 pulses; pulse count to temperature LUT |
| WSON/DQX digital output code at -50°C | min 15, typ 26, max 37 pulses; pulse count to temperature LUT, 2.15 V <= VP-VN <= 5.0 V |
| WSON/DQX digital output code at 125°C | min 2802, typ 2814, max 2826 pulses; pulse count to temperature LUT, 2.15 V <= VP-VN <= 5.0 V |
| WSON/DQX digital output code at 150°C | min 3210, typ 3221, max 3231 pulses; pulse count to temperature LUT, 2.15 V <= VP-VN <= 5.0 V |
| Junction-to-ambient thermal resistance | 213 °C/W; DQX/WSON, 2 pins |
| Junction-to-ambient thermal resistance | 177 °C/W; LPG/TO-92, 2 pins |
| VP pin function | Positive voltage pin; TO-92S pin 2, WSON pin 1; may connect to system power supply or bias resistor |
| VN pin function | Negative voltage pin/output; TO-92S pin 1, WSON pin 2; may connect to system ground or bias resistor |
| Datasheet Status | request_only |
Product Overview
The LMT01 is a Texas Instruments 2-pin digital temperature sensor for pulse-count temperature measurement. It operates across a -50 to 150 °C free-air temperature range and uses VP and VN pins, where VP is the positive voltage pin and VN is the negative voltage pin/output. VP-VN recommended operation is 2 to 5.5 V, with an absolute maximum VP-VN rating of -0.3 to 6 V.
The device reports temperature through an output pulse interface. The rated output pulse range is 15 to 3228 pulses, while the theoretical output range is 1 to 4095 pulses. Resolution is 0.0625 °C per pulse, with 808 pulses typical at 0 °C and an output pulse frequency of 88 kHz typical.
Package choices include TO-92/LPG 4.00 mm x 3.15 mm and WSON/DQX 1.70 mm x 2.50 mm. Thermal response time depends on package and medium, including 0.4 s in stirred oil for WSON/DQX and 28 s in still air for TO-92/LPG.
Key Features
- 2-pin digital temperature sensor with pulse-count output
- -50 to 150 °C operating free-air temperature range
- 2 to 5.5 V recommended VP-VN supply range
- 0.0625 °C per pulse temperature resolution
- 15 to 3228 pulses rated output pulse range
- 88 kHz typical pulse-count communication frequency
- 100 ms continuous conversion plus data transmission period
- TO-92/LPG and WSON/DQX package options
- Up to 2 m two-wire temperature probe length
- HBM ±2000 V and CDM ±750 V ESD ratings
Typical Applications
- Two-wire temperature probes
- Digital temperature sensing
- Pulse-count temperature measurement
- Stirred oil temperature sensing
- Still air temperature sensing
- Remote probe wiring up to 2 m
- TO-92 sensor assemblies
- WSON sensor assemblies
Procurement Notes
When requesting a quote for LMT01, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of sensor is the LMT01?
The LMT01 is a Texas Instruments 2-pin digital temperature sensor. It uses VP and VN pins and provides temperature information through a pulse-count output interface rather than a parallel or serial digital bus.
What temperature range does the LMT01 support?
The LMT01 operating free-air temperature sensing range is -50 to 150 °C. Accuracy ratings vary by temperature band, including ±0.5 °C max from -20°C to 90°C at VP-VN from 2.15 V to 5.5 V.
What packages are listed for the LMT01?
The extracted package data lists TO-92/LPG at 4.00 mm x 3.15 mm and WSON/DQX at 1.70 mm x 2.50 mm. Thermal response and thermal resistance values differ between the package options.
How does the LMT01 encode temperature output?
The device uses a pulse-count interface with 0.0625 °C per pulse resolution. The rated output pulse range is 15 to 3228 pulses, and the pulse count at 0°C is listed as 800 minimum, 808 typical, and 816 maximum.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.