E910.62 Datasheet, PDF (1/7 Pages) ELMOS Semiconductor AG – DUAL CHANNEL PIR SIGNAL PROCESSOR

MOS (PTY) LTD.
Microsystems On Silicon
Member of ELMOS Semiconductor AG
DUAL CHANNEL PIR SIGNAL PROCESSOR
PRELIMINARY INFORMATION - JUL 28, 2011
Features
ÿ Direct connection to PIR sensor elements
ÿ Temperature measurement
ÿ Differential PIR Input
ÿ Digital Signal Processing (DSP)
ÿ Single wire serial interface (DOCI^TM)
ÿ Operating voltage down to 2.7V
ÿ Low current consumption
ÿ High dynamic range
ÿ High supply rejection
Applications
ÿ Integration with PIR sensor elements
(hybrid modules)
ÿ Gas sensors
ÿ High end PIR systems
Traditional analog PIR detector
Analog 1
VDD
Analog 2
VSS
E910.62
General Description
The E910.62 integrated circuit is designed for interfacing
Passive Infra Red (PIR) sensors with micro-controllers or
processors. A single wire Data Out, Clock In (DOCI) inter-
face is provided for interfacing with a micro-controller.
Multiple devices can easily be operated at the same time.
Up to two PIR sensors elements connect directly to the
PIR inputs. The PIR signal is converted to a 14 bit digi-
tal value. The E910.62 contains an on chip temperature
measurement circuit with a resolution of better than
0.1K. The PIR sensor voltages and the temperature value
are supplied to an external microcontroller through the
DOCI interface.
Digital Sensor Assembly with E910.62
The E910.62 PIR Signal processor replaces the JFETs and
optional discrete components.
The pin count of the detector is reduced to 3 pins.
New digital PIR detector
ADC
ACDhC0
CHNL1
ADC
CAHCDNhCL10
ADC
CAhD°CC
°C
Decimator
LPF
Decimator
LPF
Decimator
LPF
Serial Interface
Serial Interface
VV RReeff
Osc
EE991100..6622AA
Digital
IO
VVDDDD
GGNNDD
J1
D1
1
2
VSS
R1
Source
B1
VSS
U3
VDD
1
Vin
Vout
3
R2
C1
+
C3
C4
Active
U1
ºC
E910.62
DOCI
VDD
VSS
VDD
C2
VSS
VSS
U2
VSS
8
VSS
VDD
1
VDD
7
GP0
GP5/OSC1/CLKIN
2
6
GP1
GP4/OSC2
3
5
GP2/T0CKI
GP3/MCLR/VPP
4
PIC12C508A
VSS
Typical application circuit for gas sensor
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.: 25DS0090E.00
1/7