- 您现在的位置：买卖IC网 > PDF目录373995 > ADM1033 (ANALOG DEVICES INC) Thermal Monitor and Fan Speed (RPM) Controller PDF资料下载
参数资料
| 型号： | ADM1033 |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | Thermal Monitor and Fan Speed (RPM) Controller |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封装： | QSOP-16 |
| 文件页数： | 10/40页 |
| 文件大小： | 1164K |
| 代理商： | ADM1033 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页当前第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页
ADM1033
FUNCTIONAL DESCRIPTION
The ADM1033 is a local and remote temperature monitor
and fan controller used 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 the fan
stalls, the device asserts a FAN_FAULT output.
Rev. 0 | Page 10 of 40
The ADM1033 has 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 limits. The ADM1033
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 ADM1033’s principal
internal registers. For more detailed information on the
function of each register, refer to .
SERIAL BUS INTERFACE
The ADM1033 communicates with the master via the 2-wire
SMBus 2.0 interface. It supports two SMBus 2.0 versions,
determined by the value of the LOCATION input 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
backward-compatible with SMBus 1.0 and 1.1. In this mode, the
ADM1033 powers up with a fixed address, which is determined
by the state of the LOCATION pin on power-up. Note: when
using the ADM1033, 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 following: 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.
V
CC
GND
ADM1033
R1
R2
LOCATION
PIN 13
0
Figure 16. Bootstrapping the LOCATION Input
SMBus 2.0 ARP-CAPABLE MODE
In ARP-capable mode, the ADM1033 supports such features as
address resolution protocol (ARP) and unique device identifier
(UDID). The UDID is a 128-bit message that describes the
ADM1033’s capabilities to the master. The UDID also includes a
vendor-specific ID for functionally equivalent devices.
V
CC
1.5k
1k
1k
1k
1k
1k
1.5k
GND
ADM1033 NO. 1
ADM1033 NO. 2
ADM1033 NO. 3
ADM1033 NO. 5
ADM1033 NO. 7
ARP
LOCATION = 111
ARP
LOCATION = 110
ADM1033 NO. 4
ARP
LOCATION = 101
ARP
LOCATION = 100
ADM1033 NO. 6
FD
ADDRESS = 53h
FD
ADDRESS = 52h
ADM1033 NO. 8
FD
ADDRESS = 51h
FD
ADDRESS = 50h
0
Figure 17. Setting Up Multiple ADM1033 Addresses
In SMBus 2.0 mode, this vendor-specific ID is generated by an
on-chip random number generator. This should enable two
adjacent ADM1033s in the same system to power-up with a
different vendor-specific ID, allowing the master to identify the
two separate ADM1033s 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 are more than one
ADM1033 in the system, so the master knows which one it is
communicating with. The UDID values are 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 Packet Error Checking (PEC)). The
ADM1033 responds to the following commands:
Prepare to ARP (general)
Reset device (general and directed)
Get UDID (general and directed)
Assign address (general)
相关PDF资料 |
PDF描述 |
|---|---|
| ADM1033ARQ | Thermal Monitor and Fan Speed (RPM) Controller |
| ADM1033ARQ-REEL | Thermal Monitor and Fan Speed (RPM) Controller |
| ADM1033ARQ-REEL7 | Thermal Monitor and Fan Speed (RPM) Controller |
| ADM1033ARQZ | Thermal Monitor and Fan Speed (RPM) Controller |
| ADM1033ARQZ-REEL | Thermal Monitor and Fan Speed (RPM) Controller |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1033ARQ | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 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 |
| ADM1033ARQ-REEL | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 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 |
| ADM1033ARQ-REEL7 | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 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 |
| ADM1033ARQZ | 功能描述:马达/运动/点火控制器和驱动器 +/- 1 C Digital 2-Wire RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| ADM1033ARQZ-REEL | 功能描述:板上安装温度传感器 +/- 1 C Digital 2-Wire RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
发布紧急采购，3分钟左右您将得到回复。