S-5851A

S-5851A Series www.sii-ic.com © Seiko Instruments Inc., 2009-2010 2-WIRE DIGITAL TEMPERATURE SENSOR Rev.2.1_00 S-5851A Series is a 2-wire serial I/O digital temperature sensor. This IC measures temperature with resolution of 0.0625°C without external parts. This IC is ideal for wide-ranging temperature measurement for various applications. A temperature sensor, a reference voltage generation circuit, a ΔΣ type A/D converter and interface bus are integrated in a chip, and packages SNT-6A and SOT-23-6 available for this IC. „ Features Low voltage operation Low current consumption High accuracy Temperature resolution Digital output Maximum operating frequency Low power supply voltage detection circuit Lead-free, Sn 100%, halogen-free*1 : VDD (min.) = 2.7 V : 45 μA typ. (+25°C) 1 μA typ. (+25°C at shutdown) : ±2.0°C (max.) −25°C to +85°C ±3.0°C (max.) −40°C to +125°C : 0.0625°C : 2-wire serial interface : 400 kHz *1. Refer to “„ Product Name Structure” for details. „ Applications Temperature monitor for power supply Temperature monitor for battery Air conditioning system Various electronics devices „ Packages SNT-6A SOT-23-6 Seiko Instruments Inc. 1 2-WIRE DIGITAL TEMPERATURE SENSOR S-5851A Series „ Block Diagram Temp SCL Sensor Control Logic SDA VSS ΔΣA/D Converter Serial Interface AD0 AD1 Oscillator Register VDD Figure 1 Rev. 2.1_00 2 Seiko Instruments Inc. Rev. 2.1_00 2-WIRE DIGITAL TEMPERATURE SENSOR S-5851A Series „ Prod...