ADM1069ASTZ Analog Devices Inc, ADM1069ASTZ Datasheet
ADM1069ASTZ
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ADM1069ASTZ Summary of contents
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FEATURES Complete supervisory and sequencing solution for supplies 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 ...
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ADM1069 TABLE OF CONTENTS Features .............................................................................................. 1 Functional Block Diagram .............................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Detailed Block Diagram .................................................................. 3 Specifications ..................................................................................... 4 Absolute Maximum Ratings ............................................................ 7 Thermal Resistance ...................................................................... 7 ...
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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 can be ...
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ADM1069 SPECIFICATIONS VPx = 3 6 Table 1. Parameter POWER SUPPLY ARBITRATION VH, VPx VPx VH VDDCAP C VDDCAP POWER SUPPLY Supply Current VPx ...
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Parameter ANALOG-TO-DIGITAL CONVERTER Signal Range Input Reference Voltage on REFIN Pin, V Resolution INL Gain Error Conversion Time Offset Error Input Noise BUFFERED VOLTAGE OUTPUT DACs Resolution Code 0x80 Output Voltage Range 1 Range 2 Range 3 Range 4 Output ...
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ADM1069 Parameter Standard (Digital Output) Mode (PDO1 to PDO8 SINK R PULL- (VPx) SOURCE Three-State Output Leakage Current Oscillator Frequency DIGITAL INPUTS (VXx, A0, A1) Input High Voltage, V ...
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ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Voltage on VH Pin Voltage on VPx Pins Voltage on VXx Pins Voltage on A0, A1 Pins Voltage on REFIN, REFOUT Pins Voltage on VDDCAP, VCCP Pins Voltage on DACx Pins Voltage on PDOx ...
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ADM1069 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS 32 1 VX1 PIN 1 VX2 INDICATOR VX3 ADM1069 VX4 TOP VIEW VP1 (Not to Scale) VP2 VP3 Figure 3. LQFP Pin Configuration Table 4. Pin Function Descriptions Pin No. LQFP ...
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Pin No. 1 LQFP LFCSP Mnemonic 31 39 VDDCAP GND 1 The LFCSP has an exposed pad on the bottom. This pad connect (NC). If possible, this pad should be soldered to the board ...
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ADM1069 TYPICAL PERFORMANCE CHARACTERISTICS (V) VP1 Figure 5. V vs. V VDDCAP (V) VH Figure ...
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I (µA) LOAD Figure 11. Charge-Pumped V (FET Drive Mode) vs. I PDO1 5.0 4.5 4.0 3.5 3.0 2.5 VP1 = 3V 2.0 1.5 1.0 0.5 0 ...
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ADM1069 1 CH1 200mV M1.00µs CH1 756mV Figure 17. Transient Response of DAC Code Change into Typical Load 1 CH1 200mV M1.00µs CH1 Figure 18. Transient Response of DAC to Turn-On from High-Z State DAC 20kΩ BUFFER PROBE OUTPUT POINT ...
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POWERING THE ADM1069 The ADM1069 is powered from the highest voltage input on either the positive-only supply inputs (VPx) or the high voltage supply input (VH). This technique offers improved redundancy because the device is not dependent on any particular ...
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ADM1069 INPUTS SUPPLY SUPERVISION The ADM1069 has eight programmable inputs. Four of these are dedicated supply fault detectors (SFDs). These dedicated inputs are called VH and VPx (VP1 to VP3) by default. The other four inputs are labeled VXx (VX1 ...
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The hysteresis value is given × N /255 HYST R THRESH where the desired hysteresis voltage. HYST N is the decimal value of the 5-bit hysteresis code. THRESH Note that N has a maximum ...
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ADM1069 OUTPUTS SUPPLY SEQUENCING THROUGH CONFIGURABLE OUTPUT DRIVERS Supply sequencing is achieved with the ADM1069 using the programmable driver outputs (PDOs) on the device as control signals for supplies. The output drivers can be used as logic enables or as ...
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SEQUENCING ENGINE OVERVIEW The ADM1069 sequencing engine (SE) provides the user with powerful and flexible control of sequencing. The SE implements a state machine control of the PDO outputs, with state changes conditional on input events. SE programs can enable ...
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ADM1069 SEQUENCING ENGINE APPLICATION EXAMPLE The application in this section demonstrates the operation of the SE. Figure 28 shows how the simple building block of a single SE state can be used to build a power-up sequence for a three-supply ...
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Monitoring Fault Detector The monitoring fault detector block is used to detect a failure on an input. The logical function implementing this is a wide OR gate that can detect when an input deviates from its expected condition. The clearest ...
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ADM1069 VOLTAGE READBACK The ADM1069 has an on-board, 12-bit, accurate ADC for voltage readback over the SMBus. The ADC has an 8-channel analog mux on the front end. The eight channels consist of the eight SFD inputs (VH, VPx, and ...
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SUPPLY MARGINING OVERVIEW It is often necessary for the system designer to adjust supplies, either to optimize their level or force them away from nominal values to characterize the system performance under these conditions. This is a function typically performed ...
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ADM1069 VIN DC-TO-DC CONVERTER OUTPUT FEEDBACK WRITING TO THE DACS Four DAC ranges are offered. They can be placed with midcode (Code 0x7F) at 0.6 V, 0.8 V, 1.0 V, and 1.25 V. These voltages are placed to correspond to ...
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APPLICATIONS DIAGRAM 12V OUT 3V OUT 3.3V OUT 1.25V OUT 1.2V OUT 0.9V OUT POWRON *ONLY ONE MARGINING CIRCUIT SHOWN FOR CLARITY. DAC1 TO DAC4 ALLOW MARGINING FOR UP TO FOUR VOLTAGE RAILS. ADM1069 ...
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ADM1069 COMMUNICATING WITH THE ADM1069 CONFIGURATION DOWNLOAD AT POWER-UP The configuration of the ADM1069 (undervoltage/overvoltage thresholds, glitch filter timeouts, PDO configurations, and so on) is dictated by the contents of the RAM. The RAM comprises digital latches that are local ...
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POWER-UP (V > 2.5V) CC EEPROM UPDATING THE SEQUENCING ENGINE Sequencing engine (SE) functions are not updated in the same way as regular configuration latches. The SE has its own dedicated 512-byte EEPROM for storing state definitions, providing 63 individual ...
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ADM1069 The device also has several identification registers (read-only) that can be read across the SMBus. Table 12 lists these registers with their values and functions. Table 12. Identification Register Values and Functions Name Address Value Function MANID 0xF4 0x41 ...
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SCL SDA START BY MASTER FRAME 1 SLAVE ADDRESS 1 SCL (CONTINUED) SDA (CONTINUED) FRAME 3 DATA BYTE Figure 37. General SMBus Read Timing Diagram t ...
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ADM1069 SMBus PROTOCOLS FOR RAM AND EEPROM The ADM1069 contains volatile registers (RAM) and nonvola- tile registers (EEPROM). User RAM occupies Address 0x00 to Address 0xDF; the EEPROM occupies Address 0xF800 to Address 0xFBFF. Data can be written to and ...
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Write Byte/Word In a write byte/word operation, the master device sends a command byte and one or two data bytes to the slave device, as follows: 1. The master device asserts a start condition on SDA. 2. The master sends ...
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ADM1069 READ OPERATIONS The ADM1069 uses the following SMBus read protocols. Receive Byte In a receive byte operation, the master device receives a single byte from a slave device, as follows: 1. The master device asserts a start condition on ...
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... ADM1069AST-REEL −40°C to +85°C ADM1069AST-REEL7 −40°C to +85°C 1 ADM1069ASTZ −40°C to +85°C 1 ADM1069ASTZ-REEL −40°C to +85°C 1 ADM1069ASTZ-REEL7 −40°C to +85°C 1 ADM1069ACPZ −40°C to +85°C 1 ADM1069ACPZ-REEL −40°C to +85°C ADM1069ACPZ-REEL7 1 −40°C to +85°C 1 ...
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ADM1069 NOTES ©2005–2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D04735-0-8/08(B) Rev Page ...