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SMT172 Ultra-Low Power, High-Precision Temperature Sensor

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Place of Origin:
Netherlands
Delivery Time:
5~7 Work Days
Delivery Port:
HK
Max. Production Capacity:
3000 Pcs/Month
OE Experience:
No

Product Name:SMT172 Ultra-Low Power, High-Precision Temperature Sensor

SMT172 Ultra-Low Power, High-Precision Temperature Sensor

Application

other

Product Description:

SMT172 Temperature Sensor Introduction
The SMT172 is an ultra-low power, high-precision temperature sensor that combines the ease of use with the worlds leading performance over a wide temperature range. Using the most recent advances in the silicon temperature sensing technology, the SMT172 has applied some really sophisticated IC design techniques as well as high-precision calibration methods, to achieve an absolute inaccuracy of less than ± 0.1°C in the range of -20°C to 60°C

The SMT172 operates with a supply voltage from 2.7V to 5.5V. The typical active current of only 60µA, the high speed conversion over 4000 outputs per second (at room temperature) and an extremely low noise makes this sensor the most energy efficient temperature sensor in the world (0.36µJ/measurement).

The sensors are available in a number of encapsulations: TO18, TO92, TO220, SOIC-8L, SOT223, HEC and in a 7 mm ss. probe with 5 mtr cable. The SMT172 can be supplied as a naked die as well.

The SMT172 has an overall accuracy of 0.1 °C in the range from -20 °C to +60 °C and an accuracy of 0.4 °C from -45 to +130 °C. This makes the sensor especially useful in all applications where human conditions (climate control, food processing etc.) are to be controlled.

SMT172 Temperature Sensor Features and Highlights
Worlds most energy efficient temperature sensor
0.36µJ/measurement (T_A =25°C, 3.3V)
Wide temperature range: -45°C to 130°C
Wide supply voltage range: 2.7V to 5.5V
High accuracy: ±0.25°C (-10°C to 100°C TO18)
±0.1°C (-20°C to 60°C, TO18)
Extreme low noise: 0.0002°C
Ultra-low current (60µA active or 220nA average)
Excellent long term stability
Direct interface with Microcontroller (MCU)
Wide range of package options

SMT172 Temperature Sensor Application
Ultra-low power applications: wearable electronics, wireless sensor networks
Medical applications: body temperature monitoring
Instrumentation: (Bio)chemical analysis, precision equipment
Environmental monitoring (indoor/outdoor)
Industrial applications: process monitoring/controlling

SMT172 Temperature Sensor Specifications
T_A = -45°C to 130°C, Vcc=2.7V to 5.5V, unless otherwise noted

Parameter	Min	Typ	Max	Unit	Conditions
Supply Voltage	2.7		5.5	V
Active current		50		µA	T_A = -45°C, Vcc = 2.7V, no load at the output pin
		60		µA	T_A = 25°C, Vcc = 3.3V, no load at the output pin
		70		µA	T_A = 25°C, Vcc = 3.3V, no load at the output pin
Average current		220		nA	T_A = 25°C, Vcc = 3.3V, one measurement per second
Power down current			0	µA	When controlling with Vcc pin
Accuracy TO18			0.25	°C	-10 °C to 100 °C
			0.8	°C	-45 °C to 130 °C
			0.1	°C	-20 °C to 80 °C (second order interpretation)
			0.4	°C	-45 °C to 130 °C (second order interpretation)
Accuracy TO92/TO220 SOT223			0.35	°C	-10 °C to 100 °C
			1	°C	-45 °C to 130 °C
			0.25	°C	-20 °C to 80 °C (second order interpretation)
			0.8	°C	-45 °C to 130 °C (second order interpretation)
time of measurement		1.8		ms	T_A = 25°C, Vcc = 3.3V, 8 periods
Noise			<0.0002	°C	T_A = 25 °C, Vcc = 5 V, 1 s measurement time
Output Duty Cycle	0.11		0.93		-45°C to 130°C
Output frequency	0.5		7	kHz	1 - 4 kHz for Vcc= 4.7-5.5 V and T_A=-25°C to 110°C
PSRR at Vcc			0.1	°C/V
Repeatability			0.01	°C	T_A = 25°C, Vcc = 5V, TO18
Startup time		1	2	ms	after Vcc, start measurement on first negative edge
Long term drift			0,0058	°C	T_A = 22°C, Vcc = 5V, 365 days, TO18
Output impedance			100		by design