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ADM1068ASTZ-REEL7 PDF预览

ADM1068ASTZ-REEL7

更新时间: 2024-11-26 21:18:39
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亚德诺 - ADI /
页数 文件大小 规格书
26页 423K
描述
Compact Multi-Voltage Sequencer and Supervisor

ADM1068ASTZ-REEL7 数据手册

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Super Sequencer and Monitor  
Data Sheet  
ADM1068  
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
REFOUT REFGND SDA SCL A1  
A0  
Complete supervisory and sequencing solution for up to  
8 supplies  
SMBus  
VREF  
INTERFACE  
8 supply fault detectors enable supervision of supplies to  
<0.5% accuracy at all voltages at 25°C  
<1.0% accuracy across all voltages and temperatures  
4 selectable input attenuators allow supervision of supplies to  
14.4 V on VH  
ADM1068  
EEPROM  
PDO1  
PDO2  
PDO3  
PDO4  
PDO5  
PDO6  
CONFIGURABLE  
OUTPUT  
DRIVERS  
DUAL-  
FUNCTION  
INPUTS  
VX1  
VX2  
VX3  
VX4  
6 V on VP1 to VP3 (VPx)  
(LOGIC INPUTS  
OR  
(HV CAPABLE OF  
DRIVING GATES  
OF N-FET)  
4 dual-function inputs, VX1 to VX4 (VXx)  
High impedance input to supply fault detector with  
thresholds between 0.573 V and 1.375 V  
General-purpose logic input  
8 programmable driver outputs, PDO1 to PDO8 (PDOx)  
Open-collector with external pull-up  
Push/pull output, driven to VDDCAP or VPx  
Open collector with weak pull-up to VDDCAP or VPx  
Internally charge-pumped high drive for use with external  
N-FET (PDO1 to PDO6 only)  
SFDs)  
SEQUENCING  
ENGINE  
CONFIGURABLE  
OUTPUT  
DRIVERS  
VP1  
VP2  
VP3  
PROGRAMMABLE  
RESET  
GENERATORS  
PDO7  
PDO8  
(LV CAPABLE  
OF DRIVING  
LOGIC SIGNALS)  
(SFDs)  
VH  
AGND  
PDOGND  
VDD  
ARBITRATOR  
VDDCAP  
VCCP  
GND  
Sequencing engine (SE) implements state machine control of  
PDO outputs  
Figure 1.  
State changes conditional on input events  
Enables complex control of boards  
Power-up and power-down sequence control  
Fault event handling  
GENERAL DESCRIPTION  
The ADM1068 Super Sequencer® is a configurable supervisory/  
sequencing device that offers a single-chip solution for supply  
monitoring and sequencing in multiple supply systems.  
Interrupt generation on warnings  
Watchdog function can be integrated in SE  
Program software control of sequencing through SMBus  
Device powered by the highest of VPx, VH for improved  
redundancy  
The device also provides up to eight programmable inputs for  
monitoring undervoltage faults, overvoltage faults, or out-of-  
window faults on up to eight supplies. In addition, eight  
programmable outputs can be used as logic enables. Six of these  
programmable outputs can also provide up to a 12 V output for  
driving the gate of an N-FET that can be placed in the path of  
a supply.  
User EEPROM: 256 bytes  
Industry-standard 2-wire bus interface (SMBus)  
Guaranteed PDO low with VH, VPx = 1.2 V  
Available in 32-lead 7 mm × 7 mm LQFP  
The logical core of the device is a sequencing engine. This state-  
machine-based construction provides up to 63 different states.  
This design enables very flexible sequencing of the outputs,  
based on the condition of the inputs.  
APPLICATIONS  
Central office systems  
Servers/routers  
Multivoltage system line cards  
DSP/FPGA supply sequencing  
In-circuit testing of margined supplies  
The ADM1068 is controlled via configuration data that can be  
programmed into an EEPROM. The whole configuration can  
be programmed using an intuitive GUI-based software package  
provided by Analog Devices, Inc.  
For more information about the ADM1068 register map, refer  
to the AN-721 Application Note.  
Rev. D  
Document Feedback  
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 registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700 ©2005–2015 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 

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