preliminary

preliminary

iC-RC1000

SIN/COS SIGNAL SAFETY MONITOR IC

Rev A2, Page 1/10

FEATURES

o Sine/cosine encoder signal monitoring for SIL applications

o Suitable for differential encoder signals of 1 Vpp

(250 mV amplitude per line)

o Suitable for single-ended signals (500 mV amplitude per line)

o Monitor for input frequencies from 0 to 500 kHz

o Verification of DC common mode range per signal line

o Monitoring of Lissajous curve with min/max limits

o Cable fracture detection

o Source decoupling and overvoltage clamping per pin by

external resistors

o Single-failure-proof dual channel concept

o Independent diagnostic outputs:

signal OK message and signal error message

APPLICATIONS

o Sensor monitoring

o Motion control

o Functional safety

PACKAGES

MSOP10

BLOCK DIAGRAM

DC Check

4kΩ

4kΩ

500kΩ

100kΩ

Signal Splitter

VCC2ERR

VCC Monitor

VCC2

0.8Vpp

Rpd

t>10ms

0.8Vpp

DC Check

Channel OK

4kΩ

4kΩ

Reference

Rpd

Rpd

Rpd

NS2

PS2

NC2

PC2

PC1

NC1

PS1

NS1

VCC1

1.2Vpp

VCC Monitor

VCC1OK

sin2+cos2

1MΩ

1MΩ

1.2Vpp

sin2+cos2

Reference

t>10ms

iC-RC1000

Channel ERR

+

-

1

+

-

+

-

+

-

&

1

&

loOK

NSIN

minOK

hiOK

maxOK

OK

NCOS

PSIN

minERR

maxERR

loERR

hiERR

ERR

PCOS

VCC2

VCC1

GND

&

1

&

1

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