Description
The STLM75 is a high-precision digital CMOS temperature sensor IC with a sigma-delta
temperature-to-digital converter and an I2C-compatible serial digital interface. It is targeted
for general applications such as personal computers, system thermal management,
electronics equipment, and industrial controllers, and is packaged in the industry standard
8-lead TSSOP and SO8 packages.
The device contains a band gap temperature sensor and 9-bit ADC which monitor and
digitize the temperature to a resolution up to 0.5 °C. The STLM75 is typically accurate to
(±3 °C - max) over the full temperature measurement range of –55 °C to 125 °C with ±2 °C
accuracy in the –25 °C to +100 °C range. The STLM75 is pin-for-pin and software
compatible with the LM75B.
The STLM75 is specified for operating at supply voltages from 2.7 V to 5.5 V. Operating at
3.3 V, the supply current is typically (125 µA).
The on-board sigma-delta analog-to-digital converter (ADC) converts the measured
temperature to a digital value that is calibrated in degrees centigrade; for Fahrenheit
applications a lookup table or conversion routine is required.
The STLM75 is factory-calibrated and requires no external components to measure
temperature.
Features
■ Measures temperatures from –55°C to +125°C
(–67°F to +257°F)
– ±0.5°C (typ) accuracy
– ±2°C (max) accuracy from –25°C to +100°C
■ Low operating current: 125 µA (typ)
■ No external components required
■ 2-wire I2C/SMBus-compatible serial interface
– Supports bus time-out feature
– Selectable bus address allows connection
of up to eight devices on the bus
■ Wide power supply range-operating voltage
range: 2.7 V to 5.5 V
■ Conversion time is 150 ms (max)
■ Programmable temperature threshold and
hysteresis set points
■ Pin- and software-compatible with LM75 (drop
in replacement)
■ Power-up defaults permit standalone operation
as a thermostat
■ Shutdown mode to minimize power
consumption
■ Output pin (open drain) can be configured for
interrupt or comparator/thermostat mode (dual
purpose event pin)
■ Packages:
– SO8
– MSOP8 (TSSOP8)
Applications information
STLM75 digital temperature sensors are optimal for thermal management and thermal
protection applications. They require no external components for operations except for pull
up resistors on SCL, SDA, and OS/INT outputs. A 0.1 µF bypass capacitor on VDD is
recommended. The sensing device of STLM75 is the chip itself. The typical interface
connection for this type of digital sensor is shown in Figure 4 on page 11.
Intended applications include:
●
System thermal management
●
Computers/disk drivers
●
Electronics/test equipment
●
Power supply modules
●
Consumer products
●
Battery management
●
Fax/printers management
●
Automotive
Main Products: Integrated circuit IC ,Chip IC ,Connector ,sensor ,Diode triode ,STM ,TI ,JST ,TE
Business license
Business Type: Agent
Shenzhen Guangdong China
Facebook
X
Pinterest
Linkedln