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參數資料
| 型號： | ADM1068 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Super Sequencer⑩ and Monitor |
| 中文描述： | 超級序列⑩和監(jiān)視器 |
| 文件頁數： | 1/28頁 |
| 文件大?。?/td> | 430K |
| 代理商： | ADM1068 |
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Super Sequencer and Monitor
Preliminary Technical Data
ADM1068
FEATURES
Complete supervisory and sequencing solution for up to
8 supplies
8 supply fault detectors enable supervision of supplies to
better than 1% accuracy
4 selectable input attenuators allow supervision:
Supplies up to 14.4 V on VH
Supplies up to 6 V on VP1–3
4 dual-function inputs, VX1–4
High impedance input to supply fault detector with
thresholds between 0.573 V and 1.375 V
General-purpose logic input
8 programmable output drivers (PDO1–8):
Open collector with external pull-up
Push/pull output, driven to VDDCAP or VPn
Open collector with weak pull-up to VDDCAP or VPn
Internally charge-pumped high drive for use with external
N-FET (PDO1–6 only)
Sequencing engine (SE) implements state machine control of
PDO outputs:
State changes conditional on input events
Enables complex control of boards
Power-up and power-down sequence control
Fault event handling
Interrupt generation on warnings
Watchdog function can be integrated in SE
Program software control of sequencing through SMBus
Device powered by the highest of VP1–3, VH for improved
redundancy
User EEPROM: 256 bytes
Industry-standard 2-wire bus interface (SMBus)
Guaranteed PDO low with VH, VPn = 1.2 V
32-lead 7 mm × 7 mm LQFP package
Rev.
PrB
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
2004 Analog Devices, Inc. All rights reserved.
www.analog.com
FUNCTIONAL BLOCK DIAGRAM
0
PDO7
PDO8
PDOGND
VDD
ARBITRATOR
GND
VX1
VX2
VX3
VX4
VP1
VP2
VP3
VH
AGND
VDDCAP
PROGRAMMABLE
RESET
GENERATORS
(SFDs)
FINPUTS
(LOGIOR
SFDs)
SEQUENCING
ENGINE
CONFIGURABLE
OUTPUT
DRIVERS
(HV CAPABLE
OF DRIVING
GATES OF
N-CHANNEL FET)
CONFIGURABLE
OUTPUT
DRIVERS
(LV CAPABLE
OF DRIVING
LOGIC SIGNALS)
PDO1
PDO2
PDO3
PDO4
PDO5
PDO6
SDA SCL
A1
A0
SMBus
INTERFACE
REFOUT REFGND
VREF
EEPROM
ADM1068
Figure 1.
APPLICATIONS
Central office systems
Servers/routers
Multivoltage system line cards
DSP/FPGA supply sequencing
In-circuit testing of margined supplies
GENERAL DESCRIPTION
The ADM1068 is a configurable supervisory/sequencing device
that offers a single-chip solution for supply monitoring and
sequencing in multiple supply systems.
(continued on Page 3)
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