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参数资料
| 型号： | EVAL-ADM1064TQEB |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/32页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADM1064TQ |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电源监控器/跟踪器/序列发生器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | ADM1064 |
| 主要属性： | 10 通道监控器 / 序列发生器，6 个电压输出 DAC |
| 次要属性： | 通过 SMBus（通过 USB）实现的可编程 GUI |
| 已供物品： | 2 个板，线缆，CD |
| 相关产品： | ADM1064ASUZ-ND - IC SEQUENCER/SUPERVISOR 48-TQFP ADM1064ACPZ-ND - IC SEQUENCER/SUPERVISOR 40-LFCSP |
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ADM1064
POWERING THE ADM1064
The ADM1064 is powered from the highest voltage input on either
the positive-only supply inputs (VPx) or the high voltage supply
input (VH). This technique offers improved redundancy because
the device is not dependent on any particular voltage rail to keep
it operational. The same pins are used for supply fault detection
(see the Supply Supervision section). A VDD arbitrator on the
When two or more supplies are within 100 mV of each other,
the supply that first takes control of VDD keeps control. For
example, if VP1 is connected to a 3.3 V supply, VDD powers up
to approximately 3.1 V through VP1. If VP2 is then connected
to another 3.3 V supply, VP1 still powers the device, unless VP2
goes 100 mV higher than VP1.
device chooses which supply to use. The arbitrator can be
considered an OR’ing of five low dropout regulators (LDOs)
together. A supply comparator chooses the highest input to provide
the on-chip supply. There is minimal switching loss with this
architecture (~0.2 V), resulting in the ability to power the
ADM1064 from a supply as low as 3.0 V. Note that the supply on
the VXx pins cannot be used to power the device.
An external capacitor to GND is required to decouple the on-chip
supply from noise. This capacitor should be connected to the
VDDCAP pin, as shown in Figure 18. The capacitor has another
use during brownouts (momentary loss of power). Under these
conditions, when the input supply (VPx or VH) dips transiently
below VDD, the synchronous rectifier switch immediately turns
off so that it does not pull VDD down. The VDD capacitor can
VP1
VP2
VP3
VP4
VH
IN
EN
IN
EN
IN
EN
IN
EN
IN
EN
OUT
4.75V
LDO
OUT
4.75V
LDO
OUT
4.75V
LDO
OUT
4.75V
LDO
OUT
4.75V
LDO
VDDCAP
INTERNAL
DEVICE
SUPPLY
then act as a reservoir to keep the device active until the next
highest supply takes over the powering of the device. A 10 μF
capacitor is recommended for this reservoir/decoupling function.
The VH input pin can accommodate supplies up to 14.4 V, which
allows the ADM1064 to be powered using a 12 V backplane
supply. In cases where this 12 V supply is hot swapped, it is
recommended that the ADM1064 not be connected directly to
the supply. Suitable precautions, such as the use of a hot swap
controller, should be taken to protect the device from transients
that could cause damage during hot swap events.
Rev. D | Page 13 of 32
SUPPLY
COMPARATOR
Figure 18. VDD Arbitrator Operation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| EVAL-ADM1064TQEBZ | 制造商:Analog Devices 功能描述:EVAL BOARD - Bulk |
| EVAL-ADM1065LFEB | 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk |
| EVAL-ADM1065LFEBZ | 制造商:Analog Devices 功能描述:EVAL BD FOR ADM1065 SUPER SEQUENCERS - Bulk |
| EVAL-ADM1065TQEB | 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk |
| EVAL-ADM1065TQEBZ | 功能描述:BOARD EVALUATION FOR ADM1065TQ RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:- 主要目的:电信，线路接口单元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要属性:T1/J1/E1 LIU 次要属性:- 已供物品:板，电源，线缆，CD 其它名称:82EBV2081 |
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