LM96163CISDX/NOPB National Semiconductor, LM96163CISDX/NOPB Datasheet

IC TEMP SENSOR DGTL REMOTE 10LLP

LM96163CISDX/NOPB

Manufacturer Part Number
LM96163CISDX/NOPB
Description
IC TEMP SENSOR DGTL REMOTE 10LLP
Manufacturer
National Semiconductor
Series
PowerWise®, TruTherm®r
Datasheet

Specifications of LM96163CISDX/NOPB

Function
Fan Control, Temp Monitor
Topology
ADC (Sigma Delta), Comparator, Register Bank, Tach
Sensor Type
External & Internal
Sensing Temperature
-40°C ~ 85°C, External Sensor
Output Type
SMBus™
Output Alarm
Yes
Output Fan
Yes
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-LLP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LM96163CISDX
© 2010 National Semiconductor Corporation
Remote Diode Digital Temperature Sensor with Integrated
Fan Control and TruTherm
Compensation Technology
General Description
The LM96163 has remote and local temperature sensors with
integrated fan control that includes TruTherm BJT transistor
beta compensation technology for remote diode sensing. The
LM96163 accurately measures: (1) its own temperature and
(2) the temperature of a diode-connected transistor, such as
a 2N3904, or a thermal diode commonly found on Computer
Processors, Graphics Processor Units (GPU) and other
ASIC's. The LM96163 has an offset register to correct for er-
rors caused by different non-ideality factors of other thermal
diodes.
The LM96163 also features an integrated, pulse-width-mod-
ulated (PWM), open-drain fan control output. Fan speed de-
pends on a combination of the remote temperature reading,
the lookup table and register settings. The 12-step Lookup
Table (LUT) enables the user to program a non-linear fan
speed vs. temperature transfer function often used to quiet
acoustic fan noise. In addition a fully programmable ramping
function has been added to allow smooth transitions between
LUT setpoints.
Features
Connection Diagrams
TruTherm® is a registered trademark of National Semiconductor Corporation.
Intel® is a registered trademark of Intel Corporation.
TruTherm BJT beta compensation technology supports
45nm, 65nm and 90nm Processor remote diodes
Factory trimmed for Intel® 45 nm processor thermal
diodes
Accurately senses diode-connected 2N3904 transistors or
thermal diodes on-board large processors or ASIC's
Accurately senses its own temperature
Integrated PWM fan speed control output supports high
resolution at 22.5kHz frequency for 4-pin fans
Acoustic fan noise reduction with user-programmable 12-
step Lookup Table
LUT transition fine resolution smoothing function
300410
LLP10 (QFN10)
LM96163
®
Top View
BJT Transistor Beta
Key Specifications
Applications
■ 
■ 
■ 
■ 
LM96163 Temp
Tachometer input for measuring fan RPM
Smart-Tach modes for measuring RPM of fans with pulse-
width-modulated power as shown in typical application
ALERT output for processor event notification
TCRIT output for critical temperature system shutdown
Offset register can adjust for a variety of thermal diodes
10-bit plus sign and 11-bit unsigned formats, with 1/8°C
resolution
Extended resolution to 1/32°C when digital filter enabled
Resolves remote diode temperatures up to 255.875°C
SMBus 2.0 compatible interface, with TIMEOUT and ARA
LLP10 (QFN10) package
+25 to +85°C
+25 to +85°C
Processor Thermal Management
Electronic Test and Office Equipment
Industrial Controls
Remote Temp Accuracy (includes quantization error)
-40 to +25°C
Local Temp Accuracy (includes quantization error)
Supply Voltage
Supply Current (0.8Hz Conversion)
LM96163 Temp
30041081
+55 to +105°C
+40 to +125°C
+25 to 125°C
Diode Temp
25°C to 125°C
November 30, 2010
+3.0 V to +3.6 V
Max Error
±3.0°C (max)
www.national.com
±0.75°C
456 µA (typ)
±1.5°C
±3.0°C

Related parts for LM96163CISDX/NOPB

LM96163CISDX/NOPB Summary of contents

Page 1

... Acoustic fan noise reduction with user-programmable 12- step Lookup Table ■ LUT transition fine resolution smoothing function Connection Diagrams TruTherm® registered trademark of National Semiconductor Corporation. Intel® registered trademark of Intel Corporation. © 2010 National Semiconductor Corporation LM96163 ® BJT Transistor Beta ■ ...

Page 2

Ordering Information Power-On Defaults Part Description HIGH Threshold LM96163C 85°C 10-pin LLP (QFN) LM96163C 85°C 10-pin LLP (QFN) Pin Descriptions Pin Name Input/Output Open-Drain 1 TCRIT Digital Output V 2 Power Supply Input Analog Input 4 D− ...

Page 3

Simplified Block Diagram Typical Application 3 30041082 30041083 www.national.com ...

Page 4

Absolute Maximum Ratings 2) Supply Voltage Voltage on SMBDAT, SMBCLK,  ALERT, TCRIT, TACH PWM Pins Voltage on Other Pins Input Current, D− Pin  (Note 3) Input Current at All Other Pins (Note 3) Package Input Current  (Note 3) ...

Page 5

AC Electrical Characteristics The following specifications apply for V specified in the conditions. Boldface limits apply for T Symbol Parameter TACHOMETER ACCURACY Fan Count Accuracy Fan Full-Scale Count Fan Counter Clock Frequency Fan Count Update Frequency FAN PWM OUTPUT Frequency ...

Page 6

SMBus Digital Switching Characteristics Unless otherwise noted, these specifications apply for V pF. Boldface limits apply for characteristics of the LM96163 fully meet or exceed the published specifications of the SMBus version 2.0. The following param- ...

Page 7

Pin # Label 1 TCRIT PWM 6 GND 7 ALERT 8 TACH 9 SMBDAT 10 SMBCLK Note 4: Human body model, 100 pF discharged through a 1.5 kΩ resistor. Machine model, 200 ...

Page 8

Typical Performance Characteristics Intel Processor on 45nm, 65nm Process Thermal Diode Performance Comparison Remote Temperature Reading Sensitivity to Thermal Diode Filter Capacitance, TruTherm Disabled Conversion Rate Effect on Average Power Supply Current www.national.com Remote Temperature Reading Sensitivity ...

Page 9

Functional Description The LM96163 Remote Diode Temperature Sensor with Inte- grated Fan Control incorporates a ΔV BE sensor utilizing a Local or Remote diode and a 10-bit plus sign ΔΣ ADC (Delta-Sigma Analog-to-Digital Converter). The LM96163 includes TruTherm BJT ...

Page 10

FIGURE 1. ALERT Output as Temperature Comparator Response Diagram 1.2.2 ALERT Output as an Interrupt The LM96163's ALERT output can be implemented as a sim- ple interrupt signal when it is used to trigger an interrupt service routine. In such ...

Page 11

Alerting Device(s) send their address. While transmitting their address, alerting devices sense whether their address has been transmitted correctly. (The LM96163 will reset its ALERT output and set the ALERT Mask bit once its complete address has been transmitted ...

Page 12

Digital Data Temperature Binary +125°C 0111 1101 0000 0000 +25°C 0001 1001 0000 0000 +1°C 0000 0001 0000 0000 +0.03125°C 0000 0000 0000 1000 0°C 0000 0000 0000 0000 −0.03125°C 1111 1111 1111 1000 ...

Page 13

DIGITAL FILTER In order to suppress erroneous remote temperature readings due to noise as well as increase the resolution of the temperature, the LM96163 incorporates a digital filter for remote temperature readings. The filter is accessed in the Remote ...

Page 14

FIGURE 5. Digital Filter Response in a typical Intel processor process. The filter curves were purposely Figure 5 shows the filter in use in a typical Intel processor on a 65/90 nm process ...

Page 15

LM96163 Registers The following pages include: Section 2.1, a Register Map in Hexadecimal Order, which shows a summary of all registers and their bit assignments, Section 2.2, a Register Map in Functional Order, and Section 2.3, a detailed explanation ...

Page 16

Register R/ POR Register Name 0x[HEX] W Val Rmt Low Setpoint W LSB [Reserved ALERT Mask W 17- [Reserved Rmt T_CRIT W Setpoint 1A– ...

Page 17

LM96163 REGISTER MAP IN FUNCTIONAL ORDER The following is a Register Map grouped in Functional Order. Some address locations have been left blank to maintain compatibility with LM86. Addresses in parenthesis are mirrors of named address. Reading or writing ...

Page 18

Register [HEX] FF Stepping/Die Rev. ID [RESERVED] REGISTERS—NOT USED 06 Not Used 0C Not Used 15 Not Used 17-18 Not Used 1A–20 Not Used 22–29 Not Used 34–44 Not Used 68–BE Not Used C0–FD Not Used 2.3 LM96163 REQUIRED INITIAL ...

Page 19

LM96163 DETAILED REGISTER DESCRIPTIONS IN FUNCTIONAL ORDER The following is a Register Map grouped in functional and sequence order. New register addresses have been added to maintain compatibility with the LM63 and LM64 register sets. Addresses in parenthesis are ...

Page 20

Address Read/ POR Bits Hex Write Value 4A FAN PWM AND TACHOMETER CONFIGURATION REGISTER HEX R 7:6 00 [Reserved [Reserved] 4A R/W 1:0 00 TACH1:TACH0 www.national.com Name These bits are unused and ...

Page 21

Address Read/ POR Bits Hex Write Value 4B FAN SPIN-UP CONFIGURATION REGISTER HEX R 7:6 0 [Reserved SPINUP 4B SPNDTY1:SPNDT R/W 4:3 11 SPNTIM2:SPNTIM 2:0 111 4C PWM VALUE REGISTER HEX HPWVAL7:HPWV 7:6 00 Read (Write only if ...

Page 22

Address Read/ POR Bits Hex Write Value LOOKUP TABLE (7/8 Bits for Temperature and 6/8 Bits for PWM for each Temperature/PWM Pair) HEX HEX 6:0 0x7F E1T6:E1T0 Read. (Write only if reg 4A bit ...

Page 23

Address Read/ POR Bits Hex Write Value 6:0 0x7F E3T6:E3T0 Read. (Write only if reg 4A bit 7:6 00 E3D7:E3D6 55 5:0 0x3F E3D5:E3D0 6:0 0x7F E4T6:E4T0 Read. (Write only if ...

Page 24

Address Read/ POR Bits Hex Write Value 6:0 0x7F E5T6:E5T0 Read. (Write only if reg 4A bit 7:6 00 E5D7:E5D6 59 5:0 0x3F E5D5:E5D0 6:0 0x7F E6T6:E6T0 Read. (Write only if ...

Page 25

Address Read/ POR Bits Hex Write Value 6:0 0x7F E7T6:E7T0 Read. (Write only if reg 4A bit 7:6 00 E7D7:E7D6 5D 5:0 0x3F E7D5:E7D0 6:0 0x7F E8T6:E8T0 Read. (Write only if ...

Page 26

Address Read/ POR Bits Hex Write Value 6:0 0x7F E9T6:E9T0 Read. (Write only if reg 4A bit 7:6 00 E9D7:E9D6 61 5:0 0x3F E9D5:E9D0 6:0 0x7F E10T6:E10T0 Read. (Write only if ...

Page 27

Address Read/ POR Bits Hex Write Value 6:0 0x7F E11T6:E11T0 Read. (Write only if reg 4A bit 7:6 00 E11D7:E11D6 65 5:0 0x3F E11D5:E11D0 6:0 0x7F E12T6:E12T0 Read. (Write only if ...

Page 28

Configuration Register Address Read/ POR Bits Hex Write Value 03 (09) CONFIGURATION REGISTER HEX R (09) R 4:3 00 [Reserved R Tachometer Count and Limit Registers Address ...

Page 29

Address Read/ POR Bits Hex Write Value 49 TACHOMETER LIMIT (MSB) and 48 HEX 49 R/W 7:0 0xFF TACL13:TACL6 R/W 7:2 TACHL5:TACL0 48 0xFF R/W 1:0 [Reserved] Local Temperature and Local High Setpoint Registers Address Read/ POR Bits Hex Write ...

Page 30

Address Read/ POR Bits Hex Write Value 7 AND 32 UNSIGNED REMOTE DIODE TEMPERATURE REGISTERS HEX HEX 31 R 7:0 N/A RTU12:RTU5 7 AND 12 REMOTE TEMPERATURE OFFSET ...

Page 31

Address Read/ POR Bits Hex Write Value 19 REMOTE DIODE T_CRIT SETPOINT REGISTER HEX 0x6E 19 R/W 7:0 (110° RCS7:RCS0 C) 21 T_CRIT HYSTERESIS REGISTER HEX 7 0x0A 21 R/W (10°C) 6:0 RTH6:RTH0 30 REMOTE DIODE TruTherm ENABLE REGISTER HEX ...

Page 32

ALERT Status and Mask Registers Address Read/ POR Bits Hex Write Value 02 ALERT STATUS REGISTER (8-bits) (All Alarms are latched until read, then cleared if alarm condition was removed at HEX the time of the read ...

Page 33

Address Read/ POR Bits Hex Write Value 16 ALERT MASK REGISTER (8-bits) HEX [Reserved] R [Reserved R [Reserved R ...

Page 34

... Hex Write Value FE MANUFACTURER’S ID REGISTER (8-bits) HEX FE R 7:0 0x01 Manufacturer’s ID 0x01 = National Semiconductor FF STEPPING / DIE REVISION ID REGISTER (8-bits) HEX FF R 7:0 0x49 3.0 Application Notes 3.1 FAN CONTROL DUTY CYCLE VS. REGISTER SETTINGS AND FREQUENCY The following table is true only when the 22.5 kHz PWM frequency high resolution duty cycle is not selected. ...

Page 35

The following table is true only when the 22.5 kHz PWM frequency with high resolution duty cycle is selected by setting bit 4 (PHR) of the Enhanced Configuration register (0x45), clearing bit 3 (PWCKSL) of the PWM and RPM Configuration ...

Page 36

Also included is programmable hysteresis that is not de- scribed by the curves of Figure 7. The hysteresis takes effect as temperature is decreasing and moves all the temperature set-points down by the programmed amount. For the example shown here ...

Page 37

Diode Non-Ideality Factor Effect on Accuracy When a transistor is connected as a diode, the following re- lationship holds for variables and I BE where: • 1.6×10 −19 Coulombs (the electron charge), • T ...

Page 38

Calculating Total System Accuracy The voltage seen by the LM96163 also includes the I age drop of the series resistance. The non-ideality factor, η, is the only other parameter not accounted for and depends on the diode that is ...

Page 39

Avoid routing diode traces in close proximity to power supply switching or filtering inductors. 6. Avoid running diode traces close to or parallel to high speed digital and bus lines. Diode traces should be kept at least 2 cm ...

Page 40

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 10-Lead Lead Less Package (LLP or QFN) JEDEC Registration Number MO-229-WEED-5 Order Number LM96163CISD or LM96163CISDX NS Package Number SDA10A 40 ...

Page 41

Notes 41 www.national.com ...

Page 42

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