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ADM1062 Datasheet(PDF) 1 Page - Analog Devices

Part No. ADM1062
Description  Super Sequencer with Margining Control and Temperature Monitoring
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADM1062 Datasheet(HTML) 1 Page - Analog Devices

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Super Sequencer with Margining Control
and Temperature Monitoring
ADM1062
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2005–2011 Analog Devices, Inc. All rights reserved.
FEATURES
Complete supervisory and sequencing solution for up to
10 supplies
10 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
5 selectable input attenuators allow supervision of supplies to
14.4 V on VH
6 V on VP1 to VP4 (VPx)
5 dual-function inputs, VX1 to VX5 (VXx)
High impedance input to supply fault detector with
thresholds between 0.573 V and 1.375 V
General-purpose logic input
10 programmable driver outputs, PDO1 to PDO10 (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)
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
Complete voltage margining solution for 6 voltage rails
6 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
Internal and external temperature sensors
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
Device powered by the highest of VPx, VH for improved
redundancy
User EEPROM: 256 bytes
Industry-standard 2-wire bus interface (SMBus)
Guaranteed PDO low with VH, VPx = 1.2 V
Available in 40-lead, 6 mm × 6 mm LFCSP and
48-lead, 7 mm × 7 mm TQFP packages
For more information about the ADM1062 register map,
refer to the AN-698 Application Note at www.analog.com.
FUNCTIONAL BLOCK DIAGRAM
PDO7
PDO8
PDO9
PDO10
PDOGND
VDDCAP
VDD
ARBITRATOR
DAC1 DAC2
VOUT
DAC
VOUT
DAC
DAC3
VOUT
DAC
DAC4
VOUT
DAC
DAC5
VOUT
DAC
DAC6
VOUT
DAC
GND
VCCP
VX1
VX2
VX3
VX4
VX5
VP1
VP2
VP3
VP4
VH
AGND
PROGRAMMABLE
RESET
GENERATORS
(SFDs)
DUAL-
FUNCTION
INPUTS
(LOGIC INPUTS
OR
SFDs)
SEQUENCING
ENGINE
CONFIGURABLE
OUTPUT
DRIVERS
(HV CAPABLE OF
DRIVING GATES
OF N-FET)
CONFIGURABLE
OUTPUT
DRIVERS
(LV CAPABLE
OF DRIVING
LOGIC SIGNALS)
PDO1
PDO2
PDO3
PDO4
PDO5
PDO6
SDA SCL A1
A0
SMBus
INTERFACE
REFOUT
REFIN
DN
DP
REFGND
VREF
12-BIT
SAR ADC
EEPROM
CLOSED-LOOP
MARGINING SYSTEM
ADM1062
TEMP
SENSOR
INTERNAL
DIODE
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 ADM1062 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 ADM1062 integrates a 12-bit ADC and six
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 the reference of a dc-to-dc
converter using the DAC outputs.


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