|
|
PDF ADM1032 Data sheet ( Hoja de datos )
| Número de pieza | ADM1032 | |
| Descripción | Remote and Local System Temperature Monitor | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ADM1032 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
|
No Preview Available !
ADM1032
+15C Remote and Local
System Temperature Monitor
The ADM1032 is a dual-channel digital thermometer and
under/overtemperature alarm intended for use in PCs and thermal
management systems. The device can measure the temperature of a
remote thermal diode, which can be located on the processor die or can
be a discrete device (2N3904/06), accurate to 1°C. A novel
measurement technique cancels out the absolute value of the
transistor’s base emitter voltage so that no calibration is required. The
ADM1032 also measures its ambient temperature.
The ADM1032 communicates over a 2-wire serial interface
compatible with System Management Bus (SMBus) standards.
Under/overtemperature limits can be programmed into the device over
the SMBus, and an ALERT output signals when the on−chip or remote
temperature measurement is out of range. This output can be used as
an interrupt or as a SMBus alert. The THERM output is a comparator
output that allows CPU clock throttling or on/off control of a cooling
fan. An ADM1032−1 and ADM1032−2 are available. The difference
between the ADM1032 and the ADM1032−1 is the default value of
the external THERM limit. The ADM1032−2 has a different SMBus
address. The SMBus address of the ADM1032−2 is 0x4D.
Features
• On-chip and Remote Temperature Sensing
• Offset Registers for System Calibration
• 0.125°C Resolution/1°C Accuracy on Remote Channel
• 1°C Resolution/3°C Accuracy on Local Channel
• Fast (Up to 64 Measurements Per Second)
• 2-wire SMBus Serial Interface
• Supports SMBus Alert
• Programmable Under/Overtemperature Limits
• Programmable Fault Queue
• Overtemperature Fail-safe THERM Output
• Programmable THERM Limits
• Programmable THERM Hysteresis
• 170 mA Operating Current
• 5.5 mA Standby Current
• 3.0 V to 5.5 V Supply
• Small 8-lead SOIC and MSOP Packages
• These are Pb-Free Devices*
Applications
• Desktop and Notebook Computers
• Smart Batteries
• Industrial Controllers
• Telecommunications Equipment
• Instrumentation
• Embedded Systems
http://onsemi.com
SOIC−8 NB
CASE 751
MSOP−8
CASE 846AB
PIN ASSIGNMENT
VDD
D+
D−
THERM
1
2
3
4
(Top View)
8 SCLK
7 SDATA
6 ALERT
5 GND
MARKING DIAGRAMS
8
1032AR
#YYWW
XXXX
8
1032AR
01
#YYWW
11
Marking #1
Marking #2
SOIC−8 NB
1023AR = Specific Device Code
# = Pb-Free Package
YY = Year
W = Work Week
XX = Assembly Lot
8
T1x
AYWG
G
1
MSOP−8
T1x = Refer to Order Info Table
A = Assembly Location
Y = Year
W = Work Week
G = Pb-Free Package
(Note: Microdot may be in either location)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 16 of this data sheet.
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2013
October, 2013 − Rev. 13
1
Publication Order Number:
ADM1032/D
1 page  
ADM1032
TYPICAL PERFORMANCE CHARACTERISTICS
20
16
12
8
D+ To GND
4
0
−4
−8 D+ To VDD
−12
−16
0
10
LEAKAGE RESISTANCE (MW)
100
Figure 3. Temperature Error vs. Leakage
Resistance
13
11
9
7 VIN = 40 mV p−p
5
3
1
−1
100K
VIN = 10 mV p−p
1M 10M
100M
FREQUENCY (Hz)
Figure 5. Temperature Error vs. Differential Mode
Noise Frequency
1.0
0.5
0
−0.5
0
20 40 60 80 100
TEMPERATURE (°C)
Figure 4. Temperature Error vs. Actual
Temperature Using 2N3906
120
12
10 VIN = 250 mV p−p
8
6
4
VIN = 100 mV p−p
2
0
10 1M
FREQUENCY (Hz)
Figure 6. Temperature Error vs. Power Supply
Noise Frequency
18
16
14
12
10
8
6
4
2
0
1 6 11 16 21 26 31 36
CAPACITANCE (nF)
Figure 7. Temperature Error vs. Capacitance
Between D+ and D−
2.0
1.5
1.0
VDD = 5 V
0.5
0.0
0.01
0.1
VDD = 3 V
1 10
CONVERSION RATE (Hz)
Figure 8. Operating Supply Current vs.
Conversion Rate
100
http://onsemi.com
5
5 Page 
ADM1032
direction of the data transfer, that is, whether data
is written to or read from the slave device.
The peripheral whose address corresponds to the
transmitted address responds by pulling the data
line low during the low period before the ninth
clock pulse, known as the acknowledge bit. All
other devices on the bus now remain idle while the
selected device waits for data to be read from or
written to it. If the R/W bit is a 0, the master writes
to the slave device. If the R/W bit is a 1, the
master reads from the slave device.
2. Data is sent over the serial bus in sequences of
nine clock pulses, eight bits of data followed by an
acknowledge bit from the slave device. Transitions
on the data line must occur during the low period
of the clock signal and remain stable during the
high period, since a low-to-high transition when
the clock is high can be interpreted as a STOP
signal. The number of data bytes that can be
transmitted over the serial bus in a single read or
write operation is limited only by what the master
and slave devices can handle.
3. When all data bytes are read or written, stop
conditions are established. In write mode, the
master pulls the data line high during the 10th
clock pulse to assert a STOP condition. In read
mode, the master device overrides the
acknowledge bit by pulling the data line high
during the low period before the ninth clock pulse.
This is known as no acknowledge. The master then
takes the data line low during the low period
before the 10th clock pulse, and high during the
10th clock pulse to assert a STOP condition.
Any number of bytes of data can be transferred over the
serial bus in one operation, but it is not possible to mix read
and write in one operation because the type of operation is
determined at the beginning and cannot subsequently be
changed without starting a new operation.
In the case of the ADM1032, write operations contain
either one or two bytes, while read operations contain one
byte and perform the following functions.
To write data to one of the device data registers or read
data from it, the address pointer register must first be set so
that the correct data register is addressed. The first byte of
a write operation always contains a valid address that is
stored in the address pointer register. If data is written to the
device, the write operation contains a second data byte that
is written to the register selected by the address pointer
register.
This is illustrated in Figure 13. The device address is sent
over the bus followed by R/W set to 0. This is followed by
two data bytes. The first data byte is the address of the
internal data register to be written to, which is stored in the
address pointer register. The second data byte is the data to
be written to the internal data register.
When reading data from a register, there are two
possibilities:
1. If the address pointer register value is unknown or
not the desired value, it is first necessary to set it
to the correct value before data can be read from
the desired data register. This is done by
performing a write to the ADM1032 as before, but
only the data byte containing the register read
address is sent because data is not to be written to
the register. This is shown in Figure 14.
A read operation is then performed consisting of
the serial bus address, R/W bit set to 1, followed
by the data byte read from the data register. This is
shown in Figure 15.
2. If the address pointer register is known to be at the
desired address already, data can be read from the
corresponding data register without first writing to
the address pointer register and Figure 14 can be
omitted.
NOTES:
1. Although it is possible to read a data byte from a data
register without first writing to the address pointer register,
if the address pointer register is already at the correct value,
it is not possible to write data to a register without writing to
the address pointer register. The first data byte of a write is
always written to the address pointer register.
2. Don’t forget that some of the ADM1032 registers have
different addresses for read and write operations. The write
address of a register must be written to the address pointer
if data is to be written to that register, but it is not possible
to read data from that address. The read address of a
register must be written to the address pointer before data
can be read from that register.
http://onsemi.com
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet ADM1032.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ADM1030 | Intelligent Temperature Monitor and PWM Fan Controller |  Analog Devices |
| ADM1030 | Intelligent Temperature Monitor and PWM Fan Controller | ON Semiconductor |
| ADM1031 | Intelligent Temperature Monitor and Dual PWM Fan Controller | Analog Devices |
| ADM1031 | Intelligent Temperature Monitor and Dual PWM Fan Controller | ON Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |