IC-PMX Datasheet, PDF (1/27 Pages) IC-Haus GmbH – ENERGY HARVESTING MULTITURN COUNTER/ENCODER

iC-PMX
ENERGY HARVESTING MULTITURN COUNTER/ENCODER
Rev A3, Page 1/27
FEATURES
• Gearless and batteryless revolution counter
• Energy harvesting through Wiegand pulses¹
• Integrated Hall switch for direction detection
• Evaluation of Pt1000 sensor output for high accuracy gas meter
applications
• SPI interface to external nonvolatile RAM
• Independent SPI interface to microcontroller (configuration and
data exchange)
• 4 low-noise Hall sensors with differential analog output
• Electrical Wiegand wire excitation for synchronization with
singleturn
• Runt pulse tolerant counting algorithm
• All accessory components are off-the-shelf products
APPLICATIONS
• Multiturn encoders
• Absolute end-of-shaft encoders
• Absolute hollow shaft encoders
• Absolute linear encoders
• Period counters
• Gas meters
• Liquid flow meters
• Encapsulated flow meters
PACKAGES
1 _{Devices and processes for energy harvesting by Wiegand wire within}
position encoders are protected by several worldwide patents (such as
EP1565755B1, US7598733, CA2506408) and require licensing by the
inventors and applicants.
QFN32
5 mm x 5 mm
dra_qfn48-2_pack_2, 2:1
QFN48
7 mm x 7 mm
BLOCK DIAGRAM
Wiegand
Module
Coil around
Wiegand Wire
W1
Active V+
W2 Rectifier
PP ^V-
VDD
Current
Ramp
CP
CD
CN
V3
Phase-
sequence
Hall Switch
B
Temp Module
??? C
Resistance
Thermometer
(PT1000)
+5V
PTP
V3
A/D
Converter
PTS
PTN
Brownout
Protection
VCC
VDD
CB
GND
V3
Digital Control
(self sustaining)
Control Logic
SPI Master
ALU
-
+
Voltage
Regulator
iC-PMX
VDD
Digital Control
(VDD powered)
Low Noise
VDD
Hall Sensors (4x)
Control
Logic
SPI
Slave
B
B
+
-
B
B
Hall Sensor
Logic
HON HOP
VWC
V3
CVWC
VRAM
ADJ
R2
VRAM
C3
R3
C2
C1
C0
MOSIR
SCKR
NRSTR
NCSR
MISOR
VUP
VUP
VUP
NCS
SCK
MISO
MOSI
SH
RDY
iC-RMF
NCS VDD
SO NRST
NWP SCK
VSS
SI
MCU
A/D converter
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http://www.ichaus.com