lm95221cimm-eng National Semiconductor Corporation, lm95221cimm-eng Datasheet - Page 2

• Manufacturer Part Number: lm95221cimm-eng
• Description: Dual Remote Diode Digital Temperature Sensor With Smbus Interface
• Manufacturer: National Semiconductor Corporation

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Connection Diagram
Ordering Information
Pin Descriptions
LM95221CIMM
LM95221CIMMX
Part Number
Label
GND
D1+
D1−
D2+
D2−
V
DD
Pin #
LM95221CIMM
LM95221CIMM
1
2
3
4
5
6
Package
Marking
Diode Current Source
Diode Return Current Sink
Diode Current Source
Diode Return Current Sink
Power Supply Ground
Positive Supply Voltage
Input
Function
MUA08A (MSOP-8)
MUA08A (MSOP-8)
NS Package
TOP VIEW
MSOP-8
Number
2
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 2.2 nF
diode bypass capacitor is recommended to filter high
frequency noise. Place the 2.2 nF capacitor between
and as close as possible to the LM95221’s D+ and
D− pins. Make sure the traces to the 2.2 nF
capacitor are matched. Ground this pin if this
thermal diode is not used.
To Diode Cathode. A 2.2 nF capacitor is
recommended between D1+ and D1-. Ground this
pin if this thermal diode is not used.
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 2.2 nF
diode bypass capacitor is recommended to filter high
frequency noise. Place the 2.2 nF capacitor between
and as close as possible to the LM95221’s D+ and
D− pins. Make sure the traces to the 2.2 nF
capacitor are matched. Ground this pin if this
thermal diode is not used.
To Diode Cathode. A 2.2 nF capacitor is
recommended between D2+ and D2-. Ground this
pin if this thermal diode is not used.
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.
20094302
1000 Units on Tape
3500 Units on Tape
Transport
and Reel
and Reel
Media
Typical Connection
SMBus Device
DD
010 1011
010 1011
Address
should be