driven by - Elmos Semiconductor AG

driven by
E910.91
PIR signal processor (Digital pir sensor)
Features
General Description
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The E910.91 integrated circuit is designed for interfacing
Passive Infra Red (PIR) sensors with micro-controllers or
processors. A single wire Data Out, Clock In (DOCI™) interface is provided for interfacing. Multiple devices can
easily be operated at the same time.
Digital PIR sensor signal processor
Supply voltage range 3 V to 5.5 V
Differential PIR sensor input
Digital Signal Processor (DSP)
14 bit resolution
Single wire serial interface (DOCI™)
Low current consumption
High dynamic range
High supply rejection
Operating temperature range -40°C to +85°C
Bare die for chip on board assembly
One or two PIR sensors connect directly to the PIR inputs. The PIR signal is converted to a 6 bit digital value
with an analog to digital converter.
A 14 bit resolution is achieved with a decimation filter
combined with a second order Butterworth low pass
filter. The output signal from the filter is supplied to an
external microcontroller through the DOCI™ interface.
Applications
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Smart digital PIR sensor modules for multiple
sensor applications
ÿ Motion detection
ÿ Intruder detection
ÿ Occupancy detection
VDD
U1
DPIR
DOCI_1
VSS
DOCI_2
6
7
8
9
10
11
12
13
VSS
DOCI_3
VSS
DOCI_4
VDD
VSS
14
5
VDD
U5
DPIR
Vin
Vout
C2
C1
2
RE1
L1
VSS
U6
RA0
RA1
RA2
RA3
RTCC
RB0
RB1
RB2
RB3
RB4
RB5
RB6
RB7
MCLR
VDD
OSC2/CLKOUT
VSS
OSC1
J1
2
1
Voltage
J2
2
1
Alarm
R1
17
18
1
2
3
R2
Q1
R3
4
VDD
VSS
15
X1
16
PIC16F84
C4
VSS
C5
VSS
DOCI_5
Digital PIR Sensor Module
PIR+
E910.91
PIR-
ELMOS Semiconductor AG
D1
1
GND
User settings
VDD
U4
DPIR
C3
U7
S3
VDD
U3
DPIR
3
S2
VDD
U2
DPIR
VDD
S1
VSS
VDD
VDD
VSS
VSS
DOCI_5
DOCI_5
Info Sheet
QM-No.: 25IS0028E.00 2009-09-03
ELMOS Semiconductor AG – Headquarters
Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany
Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 149
sales@elmos.de | www.elmos.de
Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any
circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication
has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of
the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications.
Copyright © 2009 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.