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参数资料
| 型号： | ADM1066ASUZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/32页 |
| 文件大小： | 0K |
| 描述： | IC SEQUENCER/SUPERVISOR 48TQFP |
| 标准包装： | 2,000 |
| 系列： | Super Sequencer® |
| 类型： | 序列发生器 |
| 监视电压数目： | 12 |
| 输出： | 可编程 |
| 电压 - 阀值： | 可调节/可选择 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-TQFP |
| 供应商设备封装： | 48-TQFP（7x7） |
| 包装： | 带卷 (TR) |
| 配用： | EVAL-ADM1066TQEBZ-ND - BOARD EVALUATION FOR ADM1066TQ |
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ADM1066
Monitoring Fault Detector
The monitoring fault detector block is used to detect a failure
on an input. The logical function implementing this is a wide
OR gate that can detect when an input deviates from its expected
condition. The clearest demonstration of the use of this block
is in the PWRGD state, where the monitor block indicates that
a failure on one or more of the VP1,VP2, or VP3 inputs has
occurred.
No programmable delay is available in this block because the
triggering of a fault condition is likely to be caused by a supply
falling out of tolerance. In this situation, the device must react
as quickly as possible. Some latency occurs when moving out of
this state because it takes a finite amount of time (~20 μs) for the
state configuration to download from the EEPROM into the SE.
MONITORING FAULT
DETECTOR
1-BIT FAULT
DETECTOR
Timeout Detector
The timeout detector allows the user to trap a failure to ensure
proper progress through a power-up or power-down sequence.
In the sample application shown in Figure 28, the timeout next-
state transition is from the EN3V3 and EN2V5 states. For the
EN3V3 state, the signal 3V3ON is asserted on the PDO1 output
pin upon entry to this state to turn on a 3.3 V supply.
This supply rail is connected to the VP2 pin, and the sequence
detector looks for the VP2 pin to go above its undervoltage
threshold, which is set in the supply fault detector (SFD)
attached to that pin.
The power-up sequence progresses when this change is
detected. If, however, the supply fails (perhaps due to a short
circuit overloading this supply), the timeout block traps the
problem. In this example, if the 3.3 V supply fails within 10 ms,
the SE moves to the DIS3V3 state and turns off this supply by
bringing PDO1 low. It also indicates that a fault has occurred by
taking PDO3 high. Timeout delays of 100 μs to 400 ms can be
VP1
SUPPLY FAULT
DETECTION
MASK
SENSE
FAULT
programmed.
FAULT AND STATUS REPORTING
The ADM1066 has a fault latch for recording faults. Two registers,
FSTAT1 and FSTAT2, are set aside for this purpose. A single bit
VX5
LOGIC INPUT CHANGE
OR FAULT DETECTION
WARNINGS
1-BIT FAULT
DETECTOR
FAULT
MASK
SENSE
1-BIT FAULT
DETECTOR
FAULT
is assigned to each input of the device, and a fault on that input
sets the relevant bit. The contents of the fault register can be
read out over the SMBus to determine which input(s) faulted.
The fault register can be enabled or disabled in each state. To
latch data from one state, ensure that the fault latch is disabled
in the following state. This ensures that only real faults are
captured and not, for example, undervoltage conditions that
may be present during a power-up or power-down sequence.
The ADM1066 also has a number of status registers. These include
MASK
Figure 29. Monitoring Fault Detector Block Diagram
more detailed information, such as whether an undervoltage or
overvoltage fault is present on a particular input. The status
registers also include information on ADC limit faults. Note
that the data in the status registers is not latched in any way and,
therefore, is subject to change at any time.
See the AN-698 Application Note at www.analog.com for full
details about the ADM1066 registers.
Rev. E | Page 20 of 32
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相关代理商/技术参数 |
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|---|---|
| ADM1066ASUZ-REEL7 | 功能描述:IC SEQUENCER/SUPERVISOR 48TQFP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:Super Sequencer® 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
| ADM1067 | 制造商:AD 制造商全称:Analog Devices 功能描述:Super Sequencer with Open-Loop Margining DACs |
| ADM1067ACP | 制造商:Analog Devices 功能描述:Sequencer 40-Pin LFCSP EP |
| ADM1067ACP-REEL | 制造商:Analog Devices 功能描述:Sequencer 40-Pin LFCSP EP T/R |
| ADM1067ACP-REEL7 | 制造商:Analog Devices 功能描述:Sequencer 40-Pin LFCSP EP T/R |
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