FAN8408DTF Fairchild Semiconductor, FAN8408DTF Datasheet - Page 7

• Manufacturer Part Number: FAN8408DTF
• Description: Motor / Motion / Ignition Controllers & Drivers BLDC Motor Drive IC 2phase Halfwave
• Manufacturer: Fairchild Semiconductor
• Type: Half Wave BLDC Motor Driverr

Specifications of FAN8408DTF

• Operating Current: 3mA
• Operating Temperature Classification: Commercial
• Package Type: SOP-225
• Operating Supply Voltage (min): 4V
• Operating Supply Voltage (max): 15V
• Operating Supply Voltage: 18 V
• Supply Current: 3 mA
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8
• Lead Free Status / RoHS Status: Compliant

3. Hall Amplifier Input Block
The hall current (I
Where, the R2 is the impedance of hall sensor.
An external capacitor, C1, can be used to reduce a power supply noise. In addition, C2 is to remove a noise which is caused in
case the line is long from the hall sensor output to the hall input (pin 5 / 6) of the device.
The input bias voltage of hall amplifier is between 1V and V
It is recommended that R1 and R3 should have the same value to make the output signal of hall sensor centered as V
I H
=
------------------------------------
R1
H
+
) is determined by R1, R2 and R3.
V
R2
CC
V
V
+
GND
CC
CC
1V
R3
V
-2V
CC
/ 2
FAN8408D
5
CC
6
C2
-2V as following figure.
IN+
IN-
V
CC
R2
R3
R1
Sensor
Hall
C1
FAN8408D
CC
/2.
7