ADM1033ARQZ-REEL7 ON Semiconductor, ADM1033ARQZ-REEL7 Datasheet - Page 9

• Manufacturer Part Number: ADM1033ARQZ-REEL7
• Description: IC THERM/FAN SPEED CTRLR 16-QSOP
• Manufacturer: ON Semiconductor

Specifications of ADM1033ARQZ-REEL7

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. ARP denotes ARP−capable mode, FD denotes fixed and discoverable mode.
Table 1. Internal Register Descriptions
Table 2. Resistor Ratios for Setting LOCATION Bits
Table 3. UDID Values
Register
Configuration
Conversion Rate
Address Pointer
Status
Interrupt Mask
Value and Limit
Offset
THERM Limit and Hysteresis
Look−up Table
THERM % On−time and
THERM % Limit
<127:120>
Ideal Ratio R2/(R1 + R2)
<119:112>
<111:96>
<95:80>
<79:64>
<63:48>
<47:32>
Bit No.
<31:0>
0.8125
0.6875
0.5625
0.4375
0.3125
0.1875
N/A
N/A
Device Capabilities
Version/Revision
Vendor ID
Device ID
Interface
Subsystem Vendor ID
Subsystem Device ID
Vendor Specific ID
Name
R1 kW
O/C
18
22
12
15
47
82
0
Description
Provides control and configuration of various functions on the device.
Determines the number of measurements per second completed by the ADM1033.
Contains the address that selects one of the other internal registers. When writing to the ADM1033,
the first byte of data is always a register address, written to the address pointer register.
Provides the status of each limit comparison.
Allows the option to mask ALERTs due to particular out−of−limit conditions.
Stores the results of temperature and fan speed measurements, along with their limit values.
Allows the local and remote temperature channel readings to be offset by a twos complement value
written to them. These values are automatically added to the temperature values (or subtracted from
them if negative). This allows the systems designer to optimize the system if required, by adding or
subtracting up to 15.875°C from a temperature reading.
Contains the temperature value at which THERM is asserted and indicates the level of hysteresis.
Used to program the look−up table for the fan speed−to−temperature profile.
Reflects the state of the THERM input and monitors the duration of the assertion time of the signal as
a percentage of a time window. The user can program the length of the time window.
R2 W
O/C
82
47
15
12
22
18
0
Describes the ADM1033’s capabilities (for instance, that it supports
PEC and uses a random number address device).
UDID version number (Version 1) and silicon revision identification
Analog Devices vendor ID number, as assigned by the SBS
Implementer’s Forum or the PCI SIG.
Device ID.
Identifies the protocol layer interfaces supported by the ADM1033.
This represents SMBus 2.0 as the Interface version..
Subsystem Vendor ID = 0 (subsystem fields are unsupported).
Subsystem Device ID = 0 (subsystem fields are unsupported).
A unique number per device. Contains LOCATION information (LL)
and a 16−bit random number (x). See Table 5 for information on
setting the LLL bits.
Actual R2/(R1 + R2)
http://onsemi.com
0.6812
0.5556
0.4444
0.3188
0.82
0.18
1
0
9
Error %
Function
+0.75
−0.63
−0.69
+0.69
+0.63
−0.75
0
0
SMBus Ver
(Note 1)
ARP
ARP
ARP
ARP
FD
FD
FD
FD
SMBus Address
0x53
0x52
0x51
0x50
N/A
N/A
N/A
N/A
00001010
00010001
00010000
00000000
00000100
00000000
00000000
00000000
00000000
00000000
00000LLL
11000001
11010100
00110100
xxxxxxxx
xxxxxxxx
Value
UDID LLL
101
100
N/A
N/A
N/A
N/A
111
110