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ADM1062 Fiches technique(PDF) 1 Page - Analog Devices |
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ADM1062 Fiches technique(HTML) 1 Page - Analog Devices |
1 / 36 page 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. |
Numéro de pièce similaire - ADM1062_15 |
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Description similaire - ADM1062_15 |
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