
NXP Semiconductors.
General description
The SE95 is a temperature-to-digital converter using an on-chip band gap temperature
sensor and Sigma Delta analog-to-digital conversion technique. The device is also a
thermal detector providing an overtemperature detection output.
The SE95 contains a number of data registers accessed by a controller via the 2-wire serial I2C-bus interface:
• Configuration register (Conf) to store the device settings such as sampling rate,
device operation mode, OS operation mode, OS polarity, and OS fault queue
• Temperature register (Temp) to store the digital Temp reading
• Set-point registers (Tos and Thyst) to store programmable overtemperature shutdown
and hysteresis limits
• Identification register (ID) to store manufacturer numbers
FEATUREs
◾ Pin-for-pin replacement for industry standard LM75/LM75A
◾ Specification of a single part over supply voltage from 2.8 V to 5.5 V
◾ Small 8-pin package types: SO8 and TSSOP8 (MSOP8)
◾ I2C-bus interface to 400 kHz with up to 8 devices on the same bus
◾ Supply voltage from 2.8 V to 5.5 V
◾ Temperature range from −55 °C to +125 °C
◾ 13-bit ADC that offers a temperature resolution of 0.03125 °C
◾ Temperature accuracy of ± 1 °C from −25 °C to +100 °C
◾ Programmable temperature threshold and hysteresis set points
◾ Supply current of 7.0 µA in shutdown mode for power conservation
◾ Stand-alone operation as thermostat at power-up
◾ ESD protection exceeds 1000 V for Human Body Model (HBM) per JESD22-A114 and
150 V for Machine Model (MM) per JESD22-A115
◾ Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
APPLICATIONs
◾ System thermal management
◾ Personal computers
◾ Electronics equipment
◾ Industrial controllers