cs4161 ON Semiconductor, cs4161 Datasheet - Page 4

• Manufacturer Part Number: cs4161
• Description: 85 Ma Dual H-bridge Odometer Driver With Divide By Select And Uvlo
• Manufacturer: ON Semiconductor

a sine wave or a square wave input. This input is protected
from excursions above V
long as the current is limited to 1.5 mA. It has an active
clamp set to zero volts to prevent negative input voltages
from disrupting normal operation. The sensor input can
withstand 150 V
1.5 mA max. using a series resistor of 100 k .
leg is not permitted, i.e. Q1 & Q2 or Q3 & Q4 cannot be
energized simultaneously.
to coil loads as specified in the Transition States section.
any intermediate states permitted.
Table 1. Transition States
SENSOR is a PNP comparator input which accepts either
Simultaneously energizing the source and sink on either
Circuit function is not affected by inductive transients due
The transition states occur as indicated in Table 1 without
State
0
1
2
3
4
5
6
7
COIL DRIVER OUTPUTS
SPEED SENSOR INPUT
DC
as long as the input current is limited to
CC
Coil A
OFF
OFF
as well as any below ground as
+
–
–
–
+
+
Q1
Q2
Coil B
Figure 2. Coil Driver Output
OFF
OFF
+
+
+
–
–
–
CIRCUIT OPERATION
http://onsemi.com
CS4161
4
Q3
Q4
follows:
or divided by two depending on the state of the SELECT
input as follows:
The polarity definition for the coil driver outputs is as
The speed sensor input frequency is either divided by one
Negative (–)
Positive (+)
Polarity
Resistor
Resistor
Circuit
Sense
Circuit
Sense
Short
Short
DIVIDER SELECT INPUT
Logic 0 = divide by 2.
Logic 1 = divide by 1.
Connect Coil +
GND
V
CC
V
Coil
GND
CC
Short Circuit
Overvoltage
Protection
Connect Coil –
and
GND
V
CC