System Monitors

PJ85775

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Product Description

±0.5°C Digital Temperature Sensor with Digital Interface

Product Features

Operation Voltage : 1.75 V to 5.5 V
Average Quiescent Current : 3.0 μA(Typ.) at 1.0 con/s
Standby Current : 1.0 μA(Typ.)
Temperature Accuracy without calibration : ±0.5°C from 0°C to 50°C ±1.0°C from-20°C to 85°C ±1.5°C from-40°C to 125°C
12 bit ADC for 0.0625 °C resolution
Compatible with SMBus, 2-wire and I2C interface
Compatible industry LM75 with performance improved
Programmable Over/Under Temperature
ProgrammableActive Low or High for ALERT pin
Support SMBusALERT ResponseAddress (ARA)
Generate 32 different slave address by setup A0, A1, A2 pin
Temperature Range:-40°C to 125°C

Product Introduction

Product Specifications

Consultation List

Product Introduction

The PJ85775 is a digital temperature sensor with ±0.5°C accuracy. Temperature data can be read out directly via digital interface (compatible with SMBus, I2C or 2-wire) by MCU, Bluetooth Chip or SoC chip. PJ85775 supports I2C communication with speed up to 400 kHz. Each chip is specially calibrated for ±0.5°C (Max.) accuracy over 0°C to 50°C range in factory before shipment to customers. There is no need for re-calibration anymore for ±0.5°C accuracy. It includes a high precision band-gap circuit, a 12-bit analog to digital converter that can offer 0.0625°C resolution, a calibration unit with non volatile memory, and a digital interface block. It includes a band-gap circuit, an Analog to Digital converter, a calibration unit with non volatile memory and a digital interface block. It has ALERT logic output pin with open drain structure, which is selectable for active low or high by programming. ALERT response is compatible with SMBus ALERT Response Address (ARA). PJ85775 can be used as standalone thermostat. Available Package : SOP-8P and MSOP-8P.

Product Specifications

Recommended Operating Conditions

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Parameter
Specification
Supply Voltage
1.75V~5.5V
Operating Ambient temperature
-40°C~125°C

Key Electrical Characteristics , TA = 25°C

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Parameter
Condition
Specification
Supply voltage range
-
1.75V~5.5V
Temperature Accuracy
TA = 0 to 50°C
±0.5 °C
Temperature Accuracy
TA = -20 to 85°C
±1.0 °C
Temperature Accuracy
TA = -40 to 125°C
±1.5 °C
Temperature Resolution
-
0.0625 °C
Average Operating Current
VIN = 3.3 V, 1.0 con/s
4.5 uA
Shutdown Current
STB bit=1, force SDA/SCL to VCC or GND
3.0 uA
Conversiontime
From active to finish completely
30 mS

DIGITAL INTERFACE , TA = 25°C

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Parameter
Condition
Specification
Logic Input High Voltage
SDA, SCL pin
0.7xVCC ~ VCC+0.3V
Logic Input Low Voltage
SDA, SCL pin
-0.3V ~ 0.3xVCC
SCL frequency
Fast Mode
400KHz

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