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ADM1169ACPZ-REEL7 PDF预览

ADM1169ACPZ-REEL7

更新时间: 2024-11-29 19:55:47
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ADM1169ACPZ-REEL7 数据手册

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Super Sequencer with Margining Control  
and Nonvolatile Fault Recording  
ADM1169  
Data Sheet  
FEATURES  
APPLICATIONS  
Complete supervisory and sequencing solution for up to  
8 supplies  
Central office systems  
Servers/routers  
16-event deep black box nonvolatile fault recording  
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  
Multivoltage system line cards  
DSP/FPGA supply sequencing  
In-circuit testing of margined supplies  
FUNCTIONAL BLOCK DIAGRAM  
REFIN REFOUT REFGND  
SDA SCL A1  
A0  
6 V on VP1 to VP3 (VPx)  
ADM1169  
SMBus  
VREF  
INTERFACE  
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  
12-BIT  
SAR ADC  
FAULT  
RECORDING  
EEPROM  
CLOSED-LOOP  
MARGINING SYSTEM  
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  
NFET (PDO1 to PDO6 only)  
PDO1  
PDO2  
PDO3  
PDO4  
PDO5  
PDO6  
CONFIGURABLE  
OUTPUT  
DRIVERS  
DUAL-  
FUNCTION  
INPUTS  
VX1  
VX2  
VX3  
VX4  
(LOGIC INPUTS  
OR  
(HV CAPABLE OF  
DRIVING GATES  
OF NFET)  
SFDs)  
SEQUENCING  
ENGINE  
VP1  
VP2  
VP3  
VH  
CONFIGURABLE  
OUTPUT  
DRIVERS  
PROGRAMMABLE  
RESET  
GENERATORS  
Sequencing engine (SE) implements state machine control of  
PDO outputs  
PDO7  
PDO8  
(LV CAPABLE  
OF DRIVING  
LOGIC SIGNALS)  
(SFDs)  
State changes conditional on input events  
Enables complex control of boards  
Power-up and power-down sequence control  
Fault event handling  
AGND  
PDOGND  
VDDCAP  
VDD  
ARBITRATOR  
VOUT VOUT VOUT VOUT  
DAC  
DAC  
DAC  
DAC  
Interrupt generation on warnings  
DAC1 DAC2 DAC3 DAC4  
VCCP  
GND  
Watchdog function can be integrated in SE  
Program software control of sequencing through SMBus  
Complete voltage margining solution for 4 voltage rails  
4 voltage output 8-bit DACs (0.300 V to 1.551 V) allow voltage  
adjustment via dc-to-dc converter trim/feedback node  
12-bit ADC for readback of all supervised voltages  
Reference input (REFIN) has 2 input options  
Driven directly from 2.048 V ( 0.25%) REFOUT pin  
More accurate external reference for improved ADC  
performance  
Figure 1.  
GENERAL DESCRIPTION  
The ADM1169 Super Sequencer® is a configurable supervisory/  
sequencing device that offers a single-chip solution for supply  
monitoring and sequencing in multiple supply systems. In addition  
to these functions, the ADM1169 integrates a 12-bit ADC and  
four 8-bit voltage output DACs. These circuits can be used to  
implement a closed-loop margining system that enables supply  
adjustment by altering either the feedback node or reference of  
a dc-to-dc converter using the DAC outputs.  
Device powered by the highest of VPx, VH for improved  
redundancy  
Supply margining can be performed with a minimum of external  
components. The margining loop can be used for in-circuit  
testing of a board during production (for example, to verify  
board functionality at −5% of nominal supplies), or it can be  
used dynamically to accurately control the output voltage of  
a dc-to-dc converter.  
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 and 40-lead,  
6 mm × 6 mm LFCSP packages  
For more information about the ADM1169 register map, refer  
to the AN-721 Application Note.  
Rev. A  
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 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 ©2011–2013 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
 

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