- 您现在的位置：买卖IC网 > PDF目录22030 > ADM1026JSTZ (ON Semiconductor)IC CNTRL SYS REF/EEPROM 48LQFP PDF资料下载
参数资料
| 型号： | ADM1026JSTZ |
| 厂商： | ON Semiconductor |
| 文件页数： | 20/55页 |
| 文件大小： | 0K |
| 描述： | IC CNTRL SYS REF/EEPROM 48LQFP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi Product Discontinuation 30/Sept/2011 |
| 标准包装： | 250 |
| 功能： | 硬件监控器 |
| 传感器类型： | 内部和外部 |
| 感应温度： | 0°C ~ 100°C |
| 精确度： | ±3°C（最小值） |
| 拓扑： | ADC，比较器，多路复用器，寄存器库 |
| 输出类型： | SMBus? |
| 输出警报： | 无 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | 0°C ~ 100°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-LQFP |
| 供应商设备封装： | 48-LQFP（7x7） |
| 包装： | 托盘 |
| 产品目录页面： | 1131 (CN2011-ZH PDF) |
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页当前第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页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页
ADM1026
The results of external temperature measurements are
stored in 8-bit, twos complement format, as illustrated in
Table 8.
thermocouple voltages are about 3 m V/ ? C of temperature
difference. Unless there are two thermocouples with a
big temperature differential between them, thermocouple
Table 8. TEMPERATURE DATA FORMAT
Temperature Digital Output
? 128 ? C 1000 0000
? 125 ? C 1000 0011
Hex
80
83
?
?
voltages should be much less than 200 mV.
Place a 0.1 m F bypass capacitor close to the ADM1026.
If the distance to the remote sensor is more than eight
inches, the use of twisted-pair cable is recommended.
This works from about 6 to 12 feet.
? 100 ? C
? 75 ? C
1001 1100
1011 0101
9C
B5
?
For very long distances (up to 100 feet), use shielded
twisted pair such as Belden #8451 microphone cable.
? 50 ? C
? 25 ? C
? 10 ? C
0 ? C
10 ? C
25 ? C
50 ? C
75 ? C
100 ? C
125 ? C
127 ? C
1100 1110
1110 0111
1111 0110
0000 0000
0000 1010
0001 1001
0011 0010
0100 1011
0110 0100
0111 1101
0111 1111
CE
E7
F6
00
0A
19
32
4B
64
7D
7F
Connect the twisted pair to D+ and D ? and the shield to
GND close to the ADM1026. Leave the remote end of
the shield unconnected to avoid ground loops.
Because the measurement technique uses switched
current sources, excessive cable and/or filter capacitance
can affect the measurement. When using long cables, the
filter capacitor may be reduced or removed. Cable resistance
can also introduce errors. A 1 W series resistance introduces
about 0.5 ? C error.
Limit Values
Limit values for analog measurements are stored in the
appropriate limit registers. In the case of voltage
Layout Considerations
Digital boards can be electrically noisy environments.
Take these precautions to protect the analog inputs from
noise, particularly when measuring the very small voltages
from a remote diode sensor.
? Place the ADM1026 as close as possible to the remote
sensing diode. Provided that the worst noise sources
such as clock generators, data/address buses, and CRTs
are avoided, this distance can be 4 to 8 inches.
? Route the D+ and D ? tracks close together, in parallel,
with grounded guard tracks on each side. Provide a
ground plane under the tracks if possible.
? Use wide tracks to minimize inductance and reduce noise
pickup. A 10 mil track minimum width and spacing is
recommended.
measurements, high and low limits can be stored so that an
interrupt request is generated if the measured value goes
above or below acceptable values. In the case of
temperature, a hot temperature or high limit can be
programmed, and a hot temperature hysteresis or low limit
can be programmed, which is usually some degrees lower.
This can be useful because it allows the system to be shut
down when the hot limit is exceeded, and restarted
automatically when it has cooled down to a safe
temperature.
Analog Monitoring Cycle Time
The analog monitoring cycle begins when a 1 is written to
the start bit (Bit 0), and a 0 to the INT_Clear bit (Bit 2) of the
configuration register. INT_Enable (Bit 1) should be set to
1 to enable the INT output. The ADC measures each analog
input in turn, starting with Remote Temperature Channel 1
GND
D+
D–
10MIL
10MIL
10MIL
10MIL
10MIL
and ending with local temperature. As each measurement is
completed, the result is automatically stored in the
appropriate value register. This round-robin monitoring
cycle continues until it is disabled by writing a 0 to Bit 0 of
the configuration register. Because the ADC is typically left
to free-run in this way, the most recently measured value of
10MIL
GND 10MIL
Figure 34. Arrangement of Signal Tracks
? Try to minimize the number of copper/solder joints,
which can cause thermocouple effects. Where copper/
solder joints are used, make sure that they are in both
the D+ and D ? paths and are at the same temperature.
? Thermocouple effects should not be a major problem
because 1 ? C corresponds to about 240 m V, and
any input can be read out at any time.
For applications where the monitoring cycle time is
important, it can easily be calculated.
The total number of channels measured is:
? Five Dedicated Supply Voltage Inputs
? Ten General-purpose Analog Inputs
? 3.3 V MAIN
? 3.3 V STBY
? Local Temperature
? Two Remote Temperature
http://onsemi.com
20
相关PDF资料 |
PDF描述 |
|---|---|
| ICD15S13E4GX00LF | CONN DSUB RCPT 15POS T/H RA GOLD |
| ADM1033ARQ | IC THERM/FAN SPEED CTRLR 16-QSOP |
| VE-BW4-CV-F2 | CONVERTER MOD DC/DC 48V 150W |
| ADM1033ARQZ | IC THERM/FAN SPEED CTRLR 16-QSOP |
| ADS15A-KG-TAXB3-R | CONN D-SUB MALE 15POS R/A .318 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1026JSTZ-R7 | 功能描述:PMIC 解决方案 HI INT SYS MONITR IC RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| ADM1026JSTZ-REEL | 功能描述:板上安装温度传感器 HI INT SYS MONITR IC 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 |
| ADM1026JSTZ-REEL7 | 制造商:Analog Devices 功能描述:IC SYSTEM MONITOR 制造商:ON Semiconductor 功能描述:IC SYSTEM MONITOR |
| ADM1027 | 制造商:AD 制造商全称:Analog Devices 功能描述:dBCOOL-TM Remote Thermal Controller and Voltage Monitor |
| ADM1027ARQ | 功能描述:IC THER CTRL VOLT/MONITOR 24QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 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 |
发布紧急采购，3分钟左右您将得到回复。