E931.08 Datasheet, PDF (1/9 Pages) ELMOS Semiconductor AG – SINGLE CHANNEL SENSOR SIGNAL PROCESSOR

SINGLE CHANNEL SENSOR SIGNAL PROCESSOR
PRELIMINARY INFORMATION - NOV 15, 2013
E931.08
Features
ÿÿ Direct connection to thermopile elements
ÿÿ Temperature measurement
ÿÿ Differential analog input
ÿÿ Digital Signal Processing (DSP)
ÿÿ Single wire serial interface (DOCI™)
ÿÿ Operating voltage down to 2.7V
ÿÿ Low current consumption
ÿÿ High dynamic range
ÿÿ High supply rejection
Applications
ÿÿ Compact ear thermometer
ÿÿ High precision remote temperature sensing
ÿÿ Infrared pyrometers
General Description
The E931.08 integrated circuit is designed for interfac-
ing Thermopile sensors with microcontrollers or proces-
sors. A single wire Data Out, Clock In (DOCI™) interface
is provided for interfacing with a micro-controller. Mul-
tiple devices can easily be operated at the same time.
One thermopile sensor connects directly to the analog
inputs of the IC. The sensor signal is converted to a 17
bit digital value. The E931.08 contains an on chip tem-
perature measurement circuit with a resolution of bet-
ter than 0.02K.
A 14 bit temperature value as well as a 17 bit sensor
value is supplied to an external microcontroller through
the DOCI™ interface.
Ordering Information
Product ID
E931.08
Op. Temp. Range
-20°C to +70°C
Package
SOIC8
Typical Application Circuit
LCD Display
00.0°C
DOCI
VSS
E931.08
IP
IN
Thermopile
Sensor
C3
100nF
External
µC
VDD
Voltage
Regulator
ON_OFF_SENS
KEEP_ON
SAVE_MEAS
LED
D3
LED
R3
680
VOUT
SHDN
VSS
SW2
MEM
C2 R1
10µF 10k
LX
VBAT
L1
4,7µH
D2
R2
1N4148
10k
D1
1N4148
SW1
ON/OFF
C1
10µF
BAT1
1.5V
This document contains information on a pre-production product. Elmos Semiconductor AG reserves the right to change specifications and information herein without notice.
Elmos Semiconductor AG
Data Sheet
QM-No.: 25DS0113E.00
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