LM95231_06 NSC [National Semiconductor], LM95231_06 Datasheet - Page 3

• Manufacturer Part Number: LM95231_06
• Description: Precision Dual Remote Diode Temperature Sensor with SMBus Interface and TruTherm Technology
• Manufacturer: NSC [National Semiconductor]

Pin Descriptions
Simplified Block Diagram
SMBDAT
SMBCLK
Label
GND
D1−
D2+
D2−
V
DD
Pin #
(Continued)
2
3
4
5
6
7
8
Diode Return Current Sink
Diode Current Source
Diode Return Current Sink
Power Supply Ground
Positive Supply Voltage
Input
SMBus Bi-Directional Data
Line, Open-Drain Output
SMBus Clock Input
Function
3
To Diode Cathode. A capacitor is not required
between D1+ and D1-. A 100 pF capacitor between
D1+ and D1− can be added and may improve
performance in noisy systems.
To Diode Anode. Connected to remote discrete
diode-connected transistor junction or to the
diode-connected transistor junction on a remote IC
whose die temperature is being sensed. A capacitor
is not required between D2+ and D2-. A 100 pF
capacitor between D2+ and D2− can be added and
may improve performance in noisy systems.
To Diode Cathode. A capacitor is not required
between D2+ and D2-. A 100 pF capacitor between
D2+ and D2− can be added and may improve
performance in noisy systems.
System low noise ground
DC Voltage from 3.0 V to 3.6 V. V
bypassed with a 0.1 µF capacitor in parallel with
100 pF. The 100 pF capacitor should be placed as
close as possible to the power supply pin. Noise
should be kept below 200 mVp-p, a 10 µF capacitor
may be required to achieve this.
From and to Controller; may require an external
pull-up resistor
From Controller; may require an external pull-up
resistor
Typical Connection
DD
20120201
should be
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