ADM1025ARQZ ON Semiconductor, ADM1025ARQZ Datasheet
ADM1025ARQZ
Specifications of ADM1025ARQZ
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ADM1025ARQZ Summary of contents
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Preliminary Technical Data FEATURES measurement channels 5 inputs to measure supply voltages V monitored internally CC External temperature measurement with remote diode On-chip temperature sensor 5 digital inputs for VID bits Integrated 100 kΩ pull-ups on VID ...
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... Internal Registers of the ADM1025/ADM1025A.....................9 Serial Bus Interface .......................................................................9 Measurement Inputs ...................................................................11 A/D Converter.............................................................................11 Input Circuits...............................................................................12 Temperature Measurement System ..............................................13 REVISION HISTORY 02/08—Rev P5: Conversion to ON Semiconductor x/07—Rev Rev. D 4/03—Rev Rev. C 10/02—Rev Rev. B 11/99—Revision 0: Initial Version Internal Temperature Measurement ........................................13 External Temperature Measurement........................................13 Layout Considerations ...
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Preliminary Technical Data SPECIFICATIONS unless otherwise noted. A MIN MAX CC MIN MAX Table 1. Parameter POWER SUPPLY 1 Supply Voltage Supply Current ...
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ADM1025/ADM1025A Parameter SERIAL BUS TIMING Clock Frequency, f SCLK Glitch Immunity Bus Free Time, t BUF Start Setup Time, t SU:STA Start Hold Time, t HD:STA Stop Condition Setup Time, t SU:STO SCL Low Time, t LOW SCL ...
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Preliminary Technical Data ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Positive Supply Voltage ( Voltage Pin IN Voltage on Any Input or Output Pin Input Current at Any Pin Package Input Current Maximum Junction Temperature ...
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ADM1025/ADM1025A PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1 SDA Digital I/O. Serial bus bidirectional data. Open-drain output. 2 SCL Digital Input. Serial bus clock. 3 GND System Ground 4 V Power. Can ...
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Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS Figure 4. Temperature Error vs. PC Board Track Resistance Figure 5. Temperature Error vs. Power Supply Noise Frequency Figure 6. Temperature Error vs. Common-Mode Noise Frequency Pentium registered trademark of Intel ...
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ADM1025/ADM1025A Figure 10. Standby Current vs. Temperature Rev Page 8 of 21| www.onsemi.com Preliminary Technical Data ...
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Preliminary Technical Data GENERAL DESCRIPTION The ADM1025/ADM1025A is a complete system hardware monitor for microprocessor-based systems. The device communicates with the system via a serial System Management Bus. The serial bus controller has a hardwired address line for device selection ...
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ADM1025/ADM1025A If ADD is left open-circuit, the default address will be 0101110. ADD is sampled only after power-up, so any changes made will have no effect, unless power is cycled. The facility to make hardwired changes to A1 and A0 ...
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Preliminary Technical Data When reading data from a register there are two possibilities the ADM1025/ADM1025A’s Address Pointer Register value is unknown or not the desired value first necessary to set it to the correct value before ...
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ADM1025/ADM1025A INPUT CIRCUITS The internal structure for the analog inputs is shown in Figure 14. Each input circuit consists of an input protection diode, an attenuator, plus a capacitor to form a first order low- pass filter that gives the ...
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Preliminary Technical Data TEMPERATURE MEASUREMENT SYSTEM INTERNAL TEMPERATURE MEASUREMENT The ADM1025/ADM1025A contains an on-chip band gap temperature sensor whose output is digitized by the on-chip ADC. The temperature data is stored in the Local Temperature Value Register (Address 27h). As ...
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ADM1025/ADM1025A LAYOUT CONSIDERATIONS Digital boards can be electrically noisy environments and care must be taken to protect the analog inputs from noise, particularly when measuring the very small voltages from a remote diode sensor. The following precautions should be taken: ...
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Preliminary Technical Data As the resistors will form part of the input attenuators, they will affect the accuracy of the analog measurement if their value is too high. The analog input channels are calibrated assuming an external series resistor of ...
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ADM1025/ADM1025A The device whose INT output is low responds to the Alert 3. Response Address, and the master reads its device address. The address of the device is now known and it can be interrogated in the usual way. 4. ...
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Preliminary Technical Data USING THE ADM1025/ADM1025A POWER-ON RESET When power is first applied, the ADM1025/ADM1025A performs a “power- on reset” on several of its registers. Registers whose power-on values are not shown have power-on conditions that are indeterminate. Value and ...
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ADM1025/ADM1025A REGISTERS Table 8. Address POINTER Register Bit Name R/ W Description 7–0 Address Pointer Write Address of ADM1025/ ADM1025A Registers. See the tables below for detail. Table 9. List of Registers Address A7–A0 Power On Value of Register Name ...
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Preliminary Technical Data Table 11. Register 41h – Status Register 1 (Power-On Default <7:0> = 00h) Bit Name R/ W Description 0 +2.5 V_Error Read indicates a high or low limit Only has been exceeded _Error ...
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ADM1025/ADM1025A Table 15. Registers 15h–3Dh – Value and Limit Registers Address R/ W Description 15h Read/Write Manufacturers Test Register 1Fh Read/Write Offset Register 20h Read-Only 2.5 V Reading 21h Read-Only V Reading CCP 22h Read-Only 3.3 V Reading 23h Read-Only ...
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... ADM1025ARQ-REEL 0°C to 100°C ADM1025ARQ-REEL7 0°C to 100°C 1 ADM1025ARQZ 0°C to 100°C 1 ADM1025ARQZ-REEL 0°C to 100°C ADM1025ARQZ-R7 1 0°C to 100°C ADM1025AARQ 0°C to 100°C 1 ADM1025AARQZ 0°C to 100° RoHS Compliant Part. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “ ...