NCV1124 Datasheet, PDF (1/8 Pages) ON Semiconductor – Dual Variable−Reluctance Sensor Interface IC

NCV1124
Dual Variable−Reluctance
Sensor Interface IC
The NCV1124 is a monolithic integrated circuit designed primarily
to condition signals from sensors used to monitor rotating parts.
The NCV1124 is a dual channel device. Each of the two identical
channels interfaces with a variable−reluctance sensor, and
continuously compares the sensor output signal to a
user−programmable internal reference. An alternating input signal of
appropriate amplitude at IN1 or IN2 will result in a rectangular
waveform at the corresponding OUT terminal, suitable for interface to
either standard microprocessors or standard logic families.
A diagnostic input, common to both channels, provides a means to
test for degradation or loss of the physical connector to both sensors.
Typical Applications
• Anti−Skid Braking and Traction Control
• Vehicle Stability Control
• Drive Belt Slippage Detection
• Crankshaft/Camshaft Position Sensing
Features
• Two Independent Channels
• Internal Hysteresis
• Built−In Diagnostic Mode
• Designed to Work from a 5.0 V "10% Supply
• Site and Control for Automotive Applications
• Pb−Free Packages are Available
V_CC
DIAG
R1
IN1
R_RS
C1
V_RS
Variable
Reluctance
Sensor
R2
IN2
C2
R_RS
V_RS
Variable
Reluctance
Sensor
V_CC V_CC V_CC
INP1
V_CC
IN_Adj
Active
Clamp
+
−
COMP1
V_CC
INP2
V_CC
Active
Clamp
+
−
COMP2
R_Adj
GND
Figure 1. Block Diagram
OUT1
To mP
OUT2
To mP
© Semiconductor Components Industries, LLC, 2006
1
April, 2006 − Rev. 0
http://onsemi.com
8
1
SO−8
CASE 751
MARKING DIAGRAM
8
V1124
ALYW4
G
1
V1124
A
L
Y
W
G
= Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
1
IN_Adj
IN1
IN2
GND
8
V_CC
OUT1
OUT2
DIAG
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 3 of this data sheet.
Publication Order Number:
NCV1124/D