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LM99 Datasheet(PDF) 2 Page - Texas Instruments

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Part # LM99
Description  LM99 짹1째C Accurate, High Temperature, Remote Diode Temperature Sensor with Two- Wire Interface
PDF  30 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM99 Datasheet(HTML) 2 Page - Texas Instruments

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Control Logic
One Shot
Register
Remote Offset
Registers
Local/Remote
Temperature
Registers
HIGH
Limit
Registers
LOW
Limit
Registers
T_CRIT Limit
& Hysteresis
Registers
Configuration
and Status
Registers
Conversion
Rate
Registers
Two-Wire Serial
Interface
Local/Remote
Diode Selector
Temperature
Sensor
Circuitry
10-Bit Plus Sign
'-6
Converter
Programable
Level
Filter
Fault
Queue
Fault
Queue
Fault
Queue
S
R
3.0V-3.6V
D+
D-
T_Crit_A
ALERT
SMBData
SMBClock
Q
LM99
SNIS129D – JANUARY 2003 – REVISED MARCH 2013
www.ti.com
Simplified Block Diagram
Connection Diagram
Figure 1. VSSOP-8
TOP VIEW
PIN DESCRIPTIONS
Label
Pin #
Function
Typical Connection
DC Voltage from 3.0 V to 3.6 V. VDD should be bypassed with
a 0.1 µF capacitor in parallel with 100 pF to ground. The 100
VDD
1
Positive Supply Voltage Input
pF capacitor should be placed as close as possible to the
power supply pin. A bulk capacitance of approximately 10 µF
needs to be in the vicinity of the LM99 VDD.
To Diode Anode. Connected to the collector and base of the
D+
2
Diode Current Source
remote discrete diode-connected transistor. Connect a 2.2 nF
capacitor between pins 2 and 3.
To Diode Cathode. Connects to the emitter of the remote
D
−
3
Diode Return Current Sink
diode-connected transistor. Connect a 2.2 nF capacitor
between pins 2 and 3.
T_CRIT Alarm Output, Open-
Pull-Up Resistor, Controller Interrupt or Power Supply
T_CRIT_A
4
Drain, Active-Low
Shutdown Control
GND
5
Power Supply Ground
Ground
Interrupt Output, Open-Drain,
ALERT
6
Pull-Up Resistor, Controller Interrupt or Alert Line
Active-Low
SMBus Bi-Directional Data Line,
SMBData
7
From and to Controller, Pull-Up Resistor
Open-Drain Output
SMBCLK
8
SMBus Input
From Controller, Pull-Up Resistor
2
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Copyright © 2003–2013, Texas Instruments Incorporated
Product Folder Links: LM99



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