ADM1067ACPZ1 データシートの表示（PDF） - Analog Devices
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ADM1067ACPZ1 Datasheet PDF : 32 Pages
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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
Supplies up to 14.4 V on VH
Supplies up to 6 V on VPn (VP1 to VP4)
5 dual-function inputs, VXn (VX1 to VX5)
High impedance input to supply fault detector with
thresholds between 0.573 V and 1.375 V
General-purpose logic input
10 programmable output drivers (PDO1 to PDO10)
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 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
Open-loop 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
Device powered by the highest of VPn, VH for improved
redundancy
User EEPROM: 256 bytes
Industry-standard 2-wire bus interface (SMBus)
Guaranteed PDO low with VH, VPn = 1.2 V
Available in 2 packages
40-lead, 6 mm × 6 mm LFCSP
48-lead, 7 mm × 7 mm TQFP
For more information about the ADM1067 register map,
refer to the AN-698 Application Note.
Super Sequencer® with
Open-Loop Margining DACs
ADM1067
FUNCTIONAL BLOCK DIAGRAM
REFOUT REFGND SDA SCL A1 A0
ADM1067 VREF
SMBus
INTERFACE
EEPROM
VX1
VX2
VX3
VX4
VX5
VP1
VP2
VP3
VP4
VH
SFDGND
VDDCAP
MUP
DUAL-
FUNCTION
INPUTS
(LOGIC INPUTS
OR
SFDs)
PROGRAMMABLE
RESET
GENERATORS
(SFDs)
SEQUENCING
ENGINE
CONFIGURABLE
OUTPUT
DRIVERS
(HV CAPABLE
OF DRIVING
GATES OF
N-CHANNEL FET)
CONFIGURABLE
OUTPUT
DRIVERS
(LV CAPABLE
OF DRIVING
LOGIC SIGNALS)
VDD
ARBITRATOR
VOUT
DAC
VOUT
DAC
VOUT
DAC
VOUT
DAC
VOUT
DAC
VOUT
DAC
PDO1
PDO2
PDO3
PDO4
PDO5
PDO6
PDO7
PDO8
PDO9
PDO10
GND
VCCP
MDN
DAC1
DAC2
DAC3
DAC4
Figure 1.
DAC5
DAC6
APPLICATIONS
Central office systems
Servers/routers
Multivoltage system line cards
DSP/FPGA supply sequencing
In-circuit testing of margined supplies
GENERAL DESCRIPTION
The ADM1067 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 ADM1067 integrates six 8-bit voltage output
DACs. These circuits can be used to implement an open-loop
margining system, which enables supply adjustment by altering
either the feedback node or reference of a dc-to-dc converter
using the DAC outputs.
(continued on Page 3)
Rev. B
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©2006 Analog Devices, Inc. All rights reserved.
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