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| 型号： | ADM1034ARQZ-REEL |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封装： | LEAD FREE, MO-137AB, QSOP-16 |
| 文件页数： | 2/40页 |
| 文件大小： | 1318K |
| 代理商： | ADM1034ARQZ-REEL |
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ADM1034
Rev. 0 | Page 10 of 40
FUNCTIONAL DESCRIPTION
The ADM1034 is a local- and remote-temperature monitor and
fan controller for use in a variety of applications, including
microprocessor-based systems. The device accurately monitors
remote and ambient temperature and uses that information to
quietly control the speed of a cooling fan. Whenever one of the
fans stalls, the device asserts a FAN_FAULT output.
The ADM1034 features a THERM I/O. As an input, this
measures assertions on the THERM pin. As an output, it asserts
a low signal to indicate when the measured temperature exceeds
the programmed THERM temperature. The ADM1034
communicates over an SMBus 2.0 interface. Its LOCATION
input determines which version of SMBus to use, as well as the
SMBus address (in fixed-and-discoverable mode) and the
LOCATION bits in the UDID (in ARP-capable mode).
INTERNAL REGISTERS
Table 4 gives a brief description of the ADM1034’s principal
internal registers. For more detailed information on the
function of each register, refer to Table 34.
SERIAL BUS INTERFACE
The ADM1034 communicates with the master via the 2-wire
SMBus 2.0 interface. It supports two versions of SMBus 2.0,
determined by the value of the LOCATION input’s resistors.
The first version is fully ARP-capable. This means that it
supports address resolution protocol (ARP), allowing the
master to dynamically address the device on power-up. It
responds to ARP commands such as “Prepare to ARP.”
The second SMBus version, fixed-and-discoverable, is
backwards-compatible with SMBus 1.0 and 1.1. In this mode,
the ADM1034 powers up with a fixed address, which is
determined by the state of the LOCATION pin on power-up.
Note: When using the ADM1034, Addresses 0xC2 and 0xCA
should not be used by any other device on the bus.
LOCATION INPUT
The LOCATION input is a resistor divider input. It has multiple
functions and can specify the SMBus version (in fixed-and-
discoverable or ARP-capable modes); the SMBus address (in
fixed-and-discoverable mode); and the LLL bits (in UDID in
ARP-capable mode).
The voltage of this 8-level input is set by a potential divider. The
voltage on LOCATION is sampled on power-up and digitized
by the on-chip ADC to determine the LOCATION input value.
Because the LOCATION input is sampled only at power-up,
changes made while power is applied have no effect.
VCC
GND
ADM1034
R1
R2
LOCATION
PIN 13
04918-0-016
Figure 16. Bootstrapping the LOCATION Input
SMBus 2.0 ARP-CAPABLE MODE
In ARP-capable mode, the ADM1034 supports features such as
address resolution protocol (ARP) and unique device identifier
(UDID). The UDID is a 128-bit message that describes the
ADM1034’s capabilities to the master. The UDID also includes a
vendor-specific ID for functionally equivalent devices.
VCC
1.5k
1k
1k
1k
1k
1k
1.5k
GND
ADM1034 NO. 1
ADM1034 NO. 2
ADM1034 NO. 3
ADM1034 NO. 5
ADM1034 NO. 7
ARP
LOCATION = 111
ARP
LOCATION = 110
ADM1034 NO. 4
ARP
LOCATION = 101
ARP
LOCATION = 100
ADM1034 NO. 6
FD
ADDRESS = 53h
FD
ADDRESS = 52h
ADM1034 NO. 8
FD
ADDRESS = 51h
FD
ADDRESS = 50h
04918-0-017
Figure 17. Setting Up Multiple ADM1034 Addresses in
SMBus 2.0 ARP-Capable Mode
In SMBus 2.0 mode, this vendor-specific ID is generated by an
on-chip random number generator. This should enable two
adjacent ADM1034s in the same system to power up with a
different vendor-specific ID, allowing the master to identify the
two separate ADM1034s and assign a different address to each.
The state of the LOCATION input on power-up is also reflected
in the UDID. This is useful when there is more than one
ADM1034 in the system, so the master knows which one it is
communicating with. The complete UDID is listed in Table 6.
The SMBus 2.0 master issues both general and directed ARP
commands. A general command is directed at all ARP devices.
A directed command is targeted at a single device once an
address has been established. The PEC byte must be used for
ARP commands. (Refer to the Packet Error Checking (PEC)
section.) The ADM1034 responds to the following commands:
Prepare to ARP (general)
Reset device (general and directed)
Get UDID (general and directed)
Assign address (general)
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| ADM1034ARQZ-REEL7 | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
| ADM1040 | 制造商:AD 制造商全称:Analog Devices 功能描述:Power Supply Monitor ASIC |
| ADM1041 | 制造商:AD 制造商全称:Analog Devices 功能描述:Secondary-Side Controller with Current Share and Housekeeping |
| ADM1041A | 制造商:AD 制造商全称:Analog Devices 功能描述:Secondary-Side Controller with Current Share and Housekeeping |
| ADM1041AARQZ | 功能描述:IC SECONDARY SIDE CTRLR 24QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
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