Overview
The STLM20DD9F from STMicroelectronics is a precision analog output temperature sensor designed for low current applications where maximizing battery life is crucial. It operates within a wide temperature range of –55 °C to 130 °C (grade 7) or –40 °C to 85 °C (grade 9), and its power supply operating range is from 2.4 V to 5.5 V. The sensor offers high precision with a maximum temperature accuracy of ±1.5 °C (±0.5 °C typical) at 25 °C and a VCC of 2.7 V. The ultra-low quiescent supply current of 4.8 µA (typical) and 8.0 µA (maximum) ensures negligible self-heating, making it ideal for battery-powered devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | –55 °C to 130 °C (grade 7), –40 °C to 85 °C (grade 9) | °C |
| Operating Voltage Range | 2.4 V to 5.5 V | V |
| Temperature Accuracy at 25 °C | ±1.5 °C (±0.5 °C typical) | °C |
| Quiescent Supply Current | 4.8 µA (typ), 8.0 µA (max) | µA |
| Output Voltage | See transfer function equations | V |
| Package Types | SOT323-5L, UDFN-4L | |
| Maximum Junction Temperature | 150 °C | °C |
| Thermal Resistance | 331.4 °C/W (SOT323-5L), 160.2 °C/W (UDFN-4L) | °C/W |
Key Features
- Precision analog voltage output temperature sensor
- ±1.5 °C maximum temperature accuracy at 25 °C (±0.5 °C typical)
- Ultra-low quiescent supply current: 4.8 µA (typ) and 8.0 µA (max)
- Operating voltage range: 2.4 V to 5.5 V
- Operating temperature range: –55 °C to 130 °C (grade 7), –40 °C to 85 °C (grade 9)
- SOT323-5L 5-lead package and UDFN-4L 4-lead package options
Applications
- Smartphones
- Multimedia PDA devices
- GPS devices
- Portable medical instruments
- Voltage-controlled crystal oscillator temperature monitors
- RF power transistor monitors
Q & A
- What is the operating temperature range of the STLM20DD9F?
The operating temperature range is –55 °C to 130 °C (grade 7) or –40 °C to 85 °C (grade 9).
- What is the typical quiescent supply current of the STLM20DD9F?
The typical quiescent supply current is 4.8 µA, with a maximum of 8.0 µA.
- What are the package options for the STLM20DD9F?
The STLM20DD9F is available in SOT323-5L and UDFN-4L packages.
- What is the maximum temperature accuracy of the STLM20DD9F at 25 °C?
The maximum temperature accuracy is ±1.5 °C (±0.5 °C typical) at 25 °C and a VCC of 2.7 V.
- What is the operating voltage range of the STLM20DD9F?
The operating voltage range is from 2.4 V to 5.5 V.
- How does the power supply voltage affect the temperature range?
The temperature range is affected by the power supply voltage. For grade 7 devices, decreasing the power supply voltage from 2.7 V to 2.4 V changes the low end of the operating temperature range from –55 °C to –30 °C, while the positive end remains at +130 °C.
- What are some common applications of the STLM20DD9F?
Common applications include smartphones, multimedia PDA devices, GPS devices, portable medical instruments, voltage-controlled crystal oscillator temperature monitors, and RF power transistor monitors.
- How does the STLM20DD9F handle capacitive loads?
The STLM20DD9F can handle capacitive loads of up to 300 pF. In noisy environments, additional filtering may be necessary to minimize noise in the output voltage.
- What is the thermal resistance of the STLM20DD9F in different packages?
The thermal resistance is 331.4 °C/W for the SOT323-5L package and 160.2 °C/W for the UDFN-4L package.
- Is the STLM20DD9F RoHS compliant?
Yes, the STLM20DD9F is RoHS compliant and comes in Ecopack2 packages.
