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参数资料
| 型号： | ADM1069ACP |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | SUPER SEQUENCER-TM WITH MARGINING CONTROL AND AUXILIARY ADC INPUTS |
| 中文描述： | 超时序与裕度控制以及辅助ADC输入商标 |
| 文件页数： | 19/32页 |
| 文件大小： | 626K |
| 代理商： | ADM1069ACP |
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Preliminary Technical Data
ADM1069
SEQUENCE DETECTOR
The sequence detector block is used to detect when a step in a
sequence has been completed. It looks for one of the inputs to
the SE to change state, and is most often used as the gate on
successful progress through a power-up or power-down
sequence. A timer block is included in this detector, which
can insert delays into a power-up or power-down sequence,
if required. Timer delays can be set from 10 μs to 400 ms.
Figure 27 is a block diagram of the sequence detector.
Rev. PrB | Page 19 of 32
0
SUPPLY FAULT
DETECTION
LOGIC INPUT CHANGE
OR FAULT DETECTION
WARNINGS
FORCE FLOW
(UNCONDITIONAL JUMP)
VP1
VX4
INVERT
SEQUENCE
DETECTOR
SELECT
TIMER
Figure 27. Sequence Detector Block Diagram
The sequence detector can also help to identify monitoring
faults. In the sample application shown in Figure 26, the FSEL1
and FSEL2 states first identify which of the VP1,VP2, or VP3
pins has faulted, and then they take the appropriate action.
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, which 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 when a supply
falls out of tolerance. In this situation, the user would want to
react as quickly as possible. Some latency occurs when moving
out of this state, however, because it takes a finite amount of
time (~20 μs) for the state configuration to download from
EEPROM into the SE. Figure 28 is a block diagram of the
monitoring fault detector.
0
SUPPLY FAULT
DETECTION
LOGIC INPUT CHANGE
OR FAULT DETECTION
VP1
VX4
MONITORING FAULT
DETECTOR
MASK
SENSE
1-BIT FAULT
DETECTOR
FAULT
WARNINGS
MASK
1-BIT FAULT
DETECTOR
FAULT
MASK
SENSE
1-BIT FAULT
DETECTOR
FAULT
Figure 28. Monitoring Fault Detector Block Diagram
TIMEOUT DETECTOR
The timeout detector allows the user to trap a failure to make
proper progress through a power-up or power-down sequence.
In the sample application shown in Figure 26, the timeout next-
state transition is from the EN3V3 and EN2V5 states. For the
EN3V3 state, the signal 3V3ON is asserted upon entry to this
state (on the PDO1 output pin) to turn on a 3.3 V supply. This
supply rail is connected to the VP2 pin, and the sequence detec-
tor looks for the VP2 pin to go above its UV 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), then the timeout block traps
the problem. In this example, if the 3.3 V supply fails within
10 ms, then 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 from 100 μs
to 400 ms can be programmed.
FAULT REPORTING
The ADM1069 has a fault latch for recording faults. Two registers
are set aside for this purpose. A single bit 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/disabled in each state. This ensures that only real
faults are captured and not, for example, undervoltage trips
when the SE is executing a power-down sequence.
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相关代理商/技术参数 |
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| ADM1069ACP-REEL | 制造商:AD 制造商全称:Analog Devices 功能描述:SUPER SEQUENCER-TM WITH MARGINING CONTROL AND AUXILIARY ADC INPUTS |
| ADM1069ACP-REEL7 | 制造商:AD 制造商全称:Analog Devices 功能描述:SUPER SEQUENCER-TM WITH MARGINING CONTROL AND AUXILIARY ADC INPUTS |
| ADM1069ACPZ | 功能描述:IC SUPERVISOR/SEQ PROG 40LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:Super Sequencer® 其它有关文件:STM6717 View All Specifications 标准包装:1 系列:- 类型:多压监控器 监视电压数目:2 输出:开路漏极或开路集电极 复位:低有效 复位超时:最小为 600 ms 电压 - 阀值:1.11V，3.075V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:Digi-Reel® 产品目录页面:1194 (CN2011-ZH PDF) 其它名称:497-7019-6 |
| ADM1069ACPZ-REEL | 功能描述:IC SUPERVISOR/SEQ PROG 40LFCSP 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 |
| ADM1069ACPZ-REEL7 | 功能描述:IC SUPERVISOR/SEQ PROG 40LFCSP 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 |
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