DC2126A Datasheet, PDF (1/10 Pages) Linear Dimensions Semiconductor – High-Accuracy Wireless Temperature Sensor

DEMO MANUAL DC2126A
Description
High-Accuracy
Wireless Temperature Sensor
with Solar Battery Life Extender
The DC2126A is a high-accuracy wireless temperature
sensor that can be powered from ambient light. It is built
using various integrated circuits from Linear Technology.
A 24-bit delta-sigma ADC reads a thermistor biased from
a precision voltage reference. A SmartMesh IP^® wireless
radio module provides the wireless mesh connectivity and
communicates the temperature to a central access point
(manager). A switching power supply harvests energy
from the built-in solar panel, and automatically switches
over to the internal battery when no ambient light is avail-
able. Table 1 shows Linear Technology^® components used
inside the DC2126A along with their function.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and LTP
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
Table 1: DC2126A Components
LTC PART NUMBER
FUNCTION
LTC^®2484
24-bit delta-sigma ADC, reads thermistor
LT^®6654
Low Noise Voltage Reference
LTP^™5901-IPM
SmartMesh IP Mote Module
LTC3330
Energy Harvesting DC/DC Converter
BENEFITS
Easy-Drive inputs allow direct hook-up of thermistor.
Bias thermistor for low noise reading of temperature
Automatically forms low power, reliable wireless mesh network
Built-in microprocessor manages ADC and power supplies
Prioritizes between solar power and battery power
Photographs
dc2126af
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