f75395 Feature Integration Technology Inc., f75395 Datasheet - Page 13

• Manufacturer Part Number: f75395
• Description: ?1o C Temperature Sensor With ? Compensation
• Manufacturer: Feature Integration Technology Inc.

7. Register Description
5-1
Bit
7.1
7
6
0
F75395
3.
4.
5.
6.
7.
digital signals which can easily induce bigger error.
Use wide tracks to minimize inductance and reduce noise pickup. 10 mil track minimum width and spacing is recommended.
Try to minimize the number of copper/solder joints, which can cause thermocouple effects. Where copper/solder joints are used,
make sure that they are in both the D+ and D- path and at the same temperature. Thermocouple effects should not be a major
problem as 1
200µV of the voltage error at D+ & D- to cause a 1 ℃ measurement error. Adding a few thermocouples causes a negligible
error.
Place a 0.1µF bypass capacitor close to the VCC pin. In very noisy environments, place an external 2200pF input filter
capacitors across D+, D- close to the F75395.
If the distance to the remote sensor is more than 8 inches, the use of twisted pair cable is recommended. It will work up to
around 6 to 12 feet.
Because the measurement technique uses switched current sources, excessive cable and/or filter capacitance will affect the
measurement accuracy. When using long cables, the filter capacitor may be reduced or removed. Cable resistance can also
induce errors. 1 Ω series resistance introduces about 0.5
ALERT_MASK
Configuration Register  Index 03h(Read), 09h(Write)
RUN_STOP
PWR_DON
Reserved
Name
℃
corresponds to about 200µV
R/W Default
R/W
R/W
R/W
RO
MINIMUM
10MILS
10MILS
0
0
0
0
Set to 1, mask ALERT# signal output.
Set to 0, monitor. Set to 1, stop monitor (power down mode).
Reserved, always return 0.
Power down this device.
. It means that a copper-solder thermocouple exhibits 3µV/ ℃ , and takes about
-9-
℃
er
GND
DXP
DXN
GND
ror.
Description
10MILS
10MILS
F75395
May, 2008
V0.15P