ADM1033 Datasheet PDF - Analog Devices
| Part Number | ADM1033 | |
| Description | Thermal Monitor and Fan Speed (RPM) Controller | |
| Manufacturers | Analog Devices | |
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There is a preview and ADM1033 download ( pdf file ) link at the bottom of this page. Total 30 Pages | ||
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Thermal Monitor and
www.DataSheet4U.com
Fan Speed (RPM) Controller
ADM1033
FEATURES
1 local and 1 remote temperature channel
±1.5°C accuracy on local and remote channels
Automatic series resistance cancellation on remote
Temperature channels > 1 kΩ
Fast (up to 64 measurements per second)
SMBus 2.0, 1.1, and 1.0 compliant
SMBus address input/LOCATION input to UDID
Programmable over-/undertemperature limits
Programmable fault queue
SMBusALERT output
Fail-safe overtemperature comparator output
Fan speed (RPM) controller
Look-up table for temperature-to-fan-speed control
Linear and discrete options for look-up table
FAN_FAULT output
THERM input, used to time PROCHOT assertions
REF input, used as reference for THERM (PROCHOT)
3 V to 5.5 V supply
Small 16-lead QSOP package
APPLICATIONS
Desktop and notebook PCs
Embedded systems
Telecommunications equipment
LCD projectors
FUNCTIONAL BLOCK DIAGRAM
VCC
6
ADM1033
MANUAL FAN
SPEED CONTROL
REGISTERS
TEMPERATURE-TO-
FAN-SPEED
LOOK-UP TABLE
SMBUS
ADDRESS
SERIAL BUS
INTERFACE
ADDRESS
POINTER
REGISTER
STATUS
REGISTER
ALERT
THERM
MASK
REGISTERS
FAULT
QUEUE
16 SCL
15 SDA
8 FAN_FAULT
3 ALERT Comp
14 SMBusALERT
7 THERM
DRIVE 1
FAN SPEED
CONTROLLER
FAN RESPONSE
LIMIT
COMPARATOR
TACH 2
NC 4
TACH SIGNAL
CONDITIONING
REF 8
LOCATION 13
D– 9
D+ 10
NC 11
NC 12
SRC
BLOCK
BAND GAP
TEMPERATURE
SENSOR
ANALOG
MULTIPLEXER
NC = NO CONNECT
FAN
SPEED
COUNTER
ADC
VALUE AND
LIMIT
REGISTERS
FAULT
QUEUE
HYSTERESIS
REGISTERS
OFFSET
REGISTERS
BAND GAP
REFERENCE
CONVERSION
RATE REGISTER
CONFIGURATION
REGISTERS
5
GND
Figure 1.
THERM PERCENT
TIMER
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved.
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Parameter
TACHOMETER ACCURACY
Fan Speed Measurement Accuracy
AGTL + INPUT (THERM)
Input High Level
Input Low Level
SERIAL BUS TIMING3
Clock Frequency, fSCLK
Glitch Immunity, tSW
Bus Free Time, tBUF
Start Setup Time, tSU:STA
Start Hold Time, tHD:STA
Stop Condition Setup Time, tSU:STO
SCL Low Time, tLOW
SCL High Time, tHIGH
SCL, SDA Rise Time, tr
SCL, SDA Fall Time, tf
Data Setup Time, tSU:DAT
Detect Clock Low Timeout, tTIMEOUT
Min Typ
Max Units
±4 %
0.75 × REF
0.4
V
V
50
1.3
0.6
0.6
0.6
1.3
0.6
100
25
400
1000
300
35
kHz
ns
µs
µs
µs
µs
µs
µs
ns
ns
ns
ms
ADM1033www.DataSheet4U.com
Test Conditions/Comments
See Figure 2
See Note 4
1 Typicals are at TA = 25°C and represent most likely parametric norm. Standby current typ is measured with VCC = 3.3 V. Timing specifications are tested at logic levels of
VIL = 0.8 V for a falling edge and VIH = 2.1 V for a rising edge.
2 Operation at 5.5 V is guaranteed by design, not production tested.
3 Guaranteed by design, not production tested.
4 SMBus timeout disabled by default. See the SMBus Timeout section for more information.
SCL
tLOW tR
tHD:STA
tHD:DAT
SDA
tBUF
PS
tF
tHIGH
tSU:DAT
tHD:STA
tSU:STA
S
Figure 2. Serial Bus Timing Diagram
tSU:STO
P
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ADM1033 electronic component. |
| Information | Total 30 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ADM1033.PDF Datasheet ] | |
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