MAXIM Manuals (Industrial)

The MAX6638 thermal-management sensor includes internal (local) and external (remote) digital temperature sensors and two independent SMBus™ serial ports. The remote temperature accuracy is ±1.0°C, and the local temperature accuracy is ±2°C. The MAX6638 also features extended temperature resolution data available in 0.125°C increments. The MAX6638 provides three system alarms: channel 1 alert (ALERT1), overtemperature (OVERT1), and channel 2 alert (ALERT2) that contain programmable thresholds set independently by each of the SMBus serial ports (SMBus1 and SMBus2). Each alert output asserts when any of four temperature conditions is violated: local overtemperature, remote overtemperature, local undertemperature, or remote undertemperature. The overtemperature signal asserts when the temperature rises above the value in the overtemperature limit register. Use the OVERT1 output to activate a cooling fan or trigger a system shutdown. Each of the 2-wire serial-interface ports accepts standard System Management Bus (SMBus) write byte, read byte, send byte, and receive byte commands independently of one another with total collision avoidance handled by the MAX6638. Each SMBus can operate its own unique serial-data rate to access any register in the MAX6638 for data reads or data writes. The MAX6638 manages all dual-port data register access functions providing a seamless, conflict-free integration into a multimaster architecture for thermal management.

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The MAX66120 is a radio frequency chip from Maxim. It integrates 1024-bit user EEPROM, 64-bit UID and 13.56MHz ISO 15693 RF interface, and can be applied to driver identification, access control and asset tracking.

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The MAX66000 is a single-chip solution that combines a 64-bit unique identifier (UID) and a 13.56MHz RF interface compliant with ISO/IEC 14443 Type B standard (Parts 2-4). The UID can be read through the block transmission protocol (ISO/IEC 14443-4), with a data rate of up to 847.5kbps. The chip supports an application family identifier (AFI) and a card identifier (CID). It does not support chaining, frame-waiting time extension, and power indication. Applications include driver identification, access control, and asset tracking.

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The MAX66140 combines 1024 bits of user EEPROM with secure hash algorithm (SHA-1) challenge-and- response authentication (ISO/IEC 10118-3 SHA-1), a 64-bit unique identifier (UID), one 64-bit secret, and a 13.56MHz ISO 15693 RF interface in a single chip. It provides secure, symmetric authentication for both reading and writing to the device and supports various features defined by ISO 15693 such as data rates, modulation indices, subcarrier modes, selected state, application family identifier (AFI), data storage format identifier (DSFID), and the Option_flag bit for read operations.

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The data sheet provides detailed information on the 78m6612 single-phase dual-outlet power and energy measurement IC, including the product's features and characteristics

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MAX66020 is an ISO/IEC 14443 Type B-Compliant 1Kb Memory Fob that integrates 1024 bits of user EEPROM, a 64-bit unique identifier (UID) and a 13.56MHz RF interface.

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The MAX8529 is a high performance synchronous step-down converter from TI, with an input voltage range of 4.75V to 23V and a maximum output current of 3A. It integrates 2 synchronous step-down converters, and can achieve output voltage tracking by external inductors. The conversion efficiency is up to 96%

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The DS1990A serial number iButton is a rugged data carrier that can be used as an electronic registration number for automatic identification systems. Each DS1990A contains a factory-programmed unique 64-bit registration number for absolute traceability. It has a working range of 2.8V to 6.0V and a read time of less than 5ms.

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The DS1990A serial number iButton® is a rugged data carrier that serves as an electronic registration number for automatic identification. Data is transferred serially through the 1-Wire® protocol, which requires only a sin- gle data lead and a ground return. Every DS1990A is factory lasered with a guaranteed unique 64-bit regis- tration number that allows for absolute traceability. The durable stainless-steel iButton package is highly resis- tant to environmental hazards such as dirt, moisture, and shock. Its compact coin-shaped profile is self- aligning with mating receptacles, allowing the DS1990A to be used easily by human operators. Accessories enable the DS1990A iButton to be mounted on almost any object, including containers, pallets, and bags. Applications include Access Control, Work-In-Progress Tracking, Tool Management, and Inventory Control. Features: Can Be Read in Less Than 5ms; Operating Range: 2.8V to 6.0V, -40°C to +85°C. Common iButton Features: Unique Factory-Lasered 64-Bit Registration Number Ensures Error-Free Device Selection and Absolute Traceability Because No Two Parts are Alike; Built-In Multidrop Controller for 1-Wire Net; Digital Identification by Momentary Contact; Data Can Be Accessed While Affixed to Object; Economically Communicates to Bus Master with a Single Digital Signal at 16.3kbps; Button Shape is Self-Aligning with Cup-Shaped Probes; Durable Stainless-Steel Case Engraved with Registration Number Withstands Harsh Environments.

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The MAX1964/MAX1965 power-supply controllers are designed to address cost-sensitive applications demanding voltage sequencing/tracking, such as cable modem consumer premise equipment (CPE), xDSL CPE, and set-top boxes. Operating off a low-cost, unregulated DC supply (such as a wall adapter output), the MAX1964 generates three positive outputs and the MAX1965 generates four positive outputs and one negative output to provide an inexpensive system power supply. The MAX1964 includes a current-mode synchronous step-down controller and two positive regulator gain blocks. The MAX1965 has one additional positive gain block and one negative regulator gain block. The main synchronous step-down controller generates a high- current output that is preset to 3.3V or adjustable from 1.236V to 0.75 ✕ VIN with an external resistive-divider. The 200kHz operating frequency allows the use of low- cost aluminum-electrolytic capacitors and low-cost power magnetics. Additionally, the MAX1964/MAX1965 step-down controllers sense the voltage across the low- side MOSFET’s on-resistance to efficiently provide the current-limit signal, eliminating the need for costly cur- rent-sense resistors. The MAX1964/MAX1965 generate additional supply rails at low cost. The positive regulator gain blocks use an external PNP pass transistor to generate low voltage rails directly from the main step-down converter (such as 2.5V or 1.8V from the main 3.3V output) or higher voltages using coupled w

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The MAX8597/MAX8598/MAX8599 are three low-dropout, high-efficiency PWM step-down controllers that operate from a 4.5V to 28V input supply and generate output voltages down to 0.6V. The MAX8597/MAX8598/MAX8599 feature n-channel MOSFETs, which result in high efficiency and high-current-capability designs. The MAX8597/MAX8598/MAX8599 are available in 20-pin and 16-pin thin QFN packages, respectively, and are suitable for a wide range of applications.

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The MAX1917 is a synchronous buck controller from MAXIM that can be used for DDR memory. It has a sourcing and sinking current of 25A, a standby current of less than 5µA, and an input voltage range of 1.5V to 3.6V. It has preset switching frequencies of 200kHz/300kHz/400kHz/550kHz, and a variable switching frequency of up to 1MHz.

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The MAX1556 evaluation board (EV kit) is a fully assembled and tested circuit board for evaluating the PWM step-down DC-DC converters MAX1556 and MAX1557. The operating voltage of the board is 2.6V ~ 5.5V, and it features high efficiency, small size, and adjustable output voltage.

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The MAX1700/MAX1701 are high-efficiency, low-noise, step-up DC-DC converters intended for use in battery-powered wireless applications. They use a synchronous-rectified pulse-width-modulation (PWM) boost topology to generate 2.5V to 5.5V outputs from battery inputs such as one to three NiCd/NiMH cells or one Li-Ion cell. Both devices have an internal 1A, 130mΩ N-channel MOSFET switch and a 250mΩ P-channel synchronous rectifier. With their internal synchronous rectifier, the MAX1700/MAX1701 deliver 5% better efficiency than similar non-synchronous converters. They also feature a pulse-frequency-modulation (PFM) standby mode to improve efficiency at light loads, and a 3µA shutdown mode. The MAX1700/MAX1701 come in 16-pin QSOP packages (which occupy the same space as an 8-pin SO). The MAX1701 includes two comparators to generate power-good and low-battery warning outputs. It also contains a gain block that can be used to build a linear regulator using an external P-channel pass device. For higher-power outputs, refer to the MAX1703. For dual outputs (step-up and linear regulator), refer to the MAX1705/MAX1706. For an on-board analog-to-digital converter, refer to the MAX848/MAX849. The MAX1701 evaluation kit is available to speed design time. Applications include digital cordless phones, personal communicators, PCS phones, palmtop computers, wireless handsets, hand-held instruments, and two-way pagers. Features include up to 96% efficiency, 1.1V IN guaranteed start-up, 0.15 mA standby current, and 3 µA shutdown current.

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The MAX525 combines four low-power, voltage-output, 12-bit digital-to-analog converters (DACs) and four precision output amplifiers in a space-saving, 20-pin package. In addition to the four voltage outputs, each amplifier’s negative input is also available to the user. This facilitates specific gain configurations, remote sensing, and high output drive capacity, making the MAX525 ideal for industrial-process-control applications. Other features include software shutdown, hardware shutdown lockout, an active-low reset which clears all registers and DACs to zero, a user-programmable logic output, and a serial-data output. Each DAC has a double-buffered input organized as an input register followed by a DAC register. A 16-bit serial word loads data into each input/DAC register. The serial interface is compatible with SPI™/QSPI™ and MICROWIRE™. It allows the input and DAC registers to be updated independently or simultaneously with a single software command. The DAC registers can be simultaneously updated through the 3-wire serial interface. All logic inputs are TTL/CMOS-logic compatible.

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MAX6603 is a platinum RTD to voltage signal conditioner produced by Texas Instruments. This device has dual channels, high voltage, and smooth signal characteristics. It can be used for temperature measurement.

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This document describes the features and characteristics of the DS18S20 digital thermometer, including the 1-Wire interface, unique 64-bit serial code, multidrop capability, no need for external components, power supply from data line, temperature measurement range from -55°C to +125°C, accuracy of ±0.5°C, etc.

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The MAX15022 is a dual-output, pulse-width-modulated (PWM), step-down DC-DC regulator with dual LDO controllers. The device operates from 2.5V to 5.5V and each output can be adjusted from 0.6V to the input supply (VAVIN). The MAX15022 delivers up to 4A (regulator 1) and 2A (regulator 2) of output current with two LDO controllers that can be used to drive two external PNP transistors to provide two additional outputs. This device offers the ability to adjust the switching frequency from 500kHz to 4MHz and provides the capability of optimizing the design in terms of size and performance. The MAX15022 utilizes a voltage-mode control scheme with external compensation to provide good noise immunity and maximum flexibility in selecting inductor values and capacitor types. The dual switching regulators operate 180° out-of-phase, thereby reducing the RMS input ripple current and thus the size of the input bypass capacitor significantly. The MAX15022 offers the ability to track (coincident or ratiometric) or sequence during power-up and power-down operation. When sequencing, it powers up glitch-free into a prebiased output. Additional features include an internal undervoltage lockout with hysteresis and a digital soft-start/soft-stop for glitch-free power-up and power-down. Protection features include lossless cycle-by-cycle current limit, hiccup-mode output short-circuit protection, and thermal shutdown. The MAX15022 is available in a space-saving, 5mm

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MAX608 is a low voltage step-up controller. The input voltage range is 1.8V to 16.5V. The output voltage is 5V, which can be adjusted from 3V to 16.5V with an external resistor divider. Logic controlled shutdown mode reduces supply current to 2µA typically.

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