Document
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
Product Name Structure
1. Product name
(1) SNT-6A S-5851AAA - I6T1
x
Environmental code U : Lead-free (Sn 100%), halogen-free G : Lead-free (for details, please contact our sales office)
Package name (abbreviated) and IC packing specification*1 I6T1 : SNT-6A, Tape
Product name
*1. Refer to the tape specification.
(2) SOT-23-6 S-5851AAA - M6T1 x
Environmental code U : Lead-free (Sn 100%), halogen-free S : Lead-free, halogen-free
Package name (abbreviated) and IC packing specification*1 M6T1 : SOT-23-6, Tape
Product name
*1. Refer to the tape specification.
2. Package
Package Name SNT-6A SOT-23-6
Package PG006-A-P-SD MP006-A-P-SD
Drawing Code
Tape
Reel
PG006-A-C-SD
PG006-A-R-SD
MP006-A-C-SD
MP006-A-R-SD
Land PG006-A-L-SD
⎯
3. Product name list
Table 1
Product name
Package
S-5851AAA-I6T1x
SNT-6A
S-5851AAA-M6T1y
SOT-23-6
Remark 1. x: G or U y: S or U
2. Please select products of environmental code = U for Sn 100%, halogen-free products.
Seiko Instruments Inc.
3
2-WIRE DIGITAL TEMPERATURE SENSOR S-5851A Series
Rev. 2.1_00
Pin Configuration
SNT-6A Top view
16 25 34
Figure 2
Table 2
Pin No.
Symbol
Description
1 AD1
Address input
2 VSS
GND
3 SCL Input for serial clock
4 SDA
I/O for serial data
5 AD0
Address input
6 VDD
Power supply
Remark See Dimensions for details of the package drawings.
SOT-23-6 Top view 6 54
12 3
Table 3
Pin No.
Symbol
Description
1 SCL Input for serial clock
2 VSS
GND
3 AD1
Address input
4 VDD
Power supp.