Maxim - Data Sheets

Maxim - Data Sheets http://www.maxim-ic.com Maxim - Whats New en Copyright 2009, Maxim Integrated Products, Inc. Wed, 16 May 2012 11:21:36 GMT http://www.maxim-ic.com/new info2@maxim-ic.com (Info2) info2@maxim-ic.com (Info2) 10 Maxim - Data Sheets http://media.maxim-ic.com/maxkit/images/max_logo_header.gif http://www.maxim-ic.com 88 31 Maxim Logo MAX6800, MAX6801, MAX6802: 3-Pin, Low-Power µP Reset Circuits http://www.maxim-ic.com/datasheet/index.mvp/id/2488 The MAX6800/MAX6801/MAX6802 microprocessor (µP) supervisory circuits monitor the power supplies in 2.85V to 5.0V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external components and adjustments. These devices perform a single function—they assert a reset signal whenever the VCC supply voltage declines below a preset threshold, keeping it asserted for a preset timeout period after VCC has risen above the reset threshold. The only difference among the three devices is their output. The MAX6801 (push/pull) and MAX6802 (open-drain) have an active-low RESET output, while the MAX6800 (push/pull) has an active-high RESET output. The MAX6800/MAX6801 are guaranteed to be in the correct state for VCC down to 0.7V. The MAX6802 is guaranteed to be in the correct state for VCC down to 1.0V. The reset comparator in these ICs is designed to ignore fast transients on VCC. Reset thresholds are factory-trimmable between 2.63V and 4.80V, in approximately 100mV increments. These devices are available with a 1ms (min), 20ms (min), or 100ms (min) reset pulse width. Ideal for space-critical applications, the MAX6800/MAX6801/MAX6802 come packaged in a 3-pin SOT23. For a lower threshold voltage version, see the MAX6332/MAX6333/MAX6334. http://www.maxim-ic.com/datasheet/index.mvp/id/2488 Tue, 15 May 2012 00:00:00 -0000 MAX5965A, MAX5965B: High-Power, Quad, Monolithic, PSE Controllers for Power over Ethernet http://www.maxim-ic.com/datasheet/index.mvp/id/6270 The MAX5965A/MAX5965B are quad, monolithic, -48V power controllers designed for use in IEEE® 802.3af-compliant/IEEE 802.3at-compatible power-sourcing equipment (PSE). These devices provide powered device (PD) discovery, classification, current limit, DC and AC load disconnect detections in compliance with the IEEE 802.3af standard. The MAX5965A/MAX5965B are pin compatible with the MAX5952/MAX5945/LTC4258/LTC4259A PSE controllers and provide additional features. The MAX5965A/MAX5965B feature a high-power mode that provides up to 45W per port. The MAX5965A/ MAX5965B provide new Class 5 and 2-event classification (Class 6) for detection and classification of high-power PDs. The MAX5965A/MAX5965B provide instantaneous readout of each port current through the I²C interface. The MAX5965A/MAX5965B also provide high-capacitance detection for legacy PDs. These devices feature an I²C-compatible, 3-wire serial interface, and are fully software configurable and programmable. The class-overcurrent detection function enables system power management to detect if a PD draws more than the allowable current. The MAX5965A/MAX5965B's extensive programmability enhances system flexibility, enables field diagnosis, and allows for uses in other applications. The MAX5965A/MAX5965B provide four operating modes to suit different system requirements. Auto mode allows the devices to operate automatically without any software supervision. Semi-automatic mode automatically detects and classifies a device connected to a port after initial software activation, but does not power up that port until instructed to by software. Manual mode allows total software control of the device and is useful for system diagnostics. Shutdown mode terminates all activities and securely turns off power to the ports. The MAX5965A/MAX5965B provide input undervoltage lockout (UVLO), input undervoltage detection, a load-stability safety check during detection, input overvoltage lockout, overtemperature detection, output voltage slew-rate limit during startup, power-good status, and fault status. The MAX5965A/MAX5965B's programmability includes startup timeout, overcurrent timeout, and load-disconnect detection timeout. The MAX5965A/MAX5965B are available in a 36-pin SSOP package and are rated for both extended (-40°C to +85°C) and upper commercial (0°C to +85°C) temperature ranges. http://www.maxim-ic.com/datasheet/index.mvp/id/6270 Tue, 15 May 2012 00:00:00 -0000 DS1323: 3.3V Flexible Nonvolatile Controller with Lithium Battery Monitor http://www.maxim-ic.com/datasheet/index.mvp/id/7432 The DS1323 flexible nonvolatile controller with lithium battery monitor is a CMOS circuit that solves the application problem of converting CMOS SRAMs into nonvolatile memory. Incoming power is monitored for an out-of-tolerance condition. When such a condition is detected, chip enable outputs are inhibited to accomplish write protection and the battery is switched on to supply the SRAMs with uninterrupted power. Special circuitry uses a low-leakage CMOS process that affords precise voltage detection at extremely low-battery consumption. One DS1323 can support as many as four SRAMs arranged in any of three memory configurations. In addition to battery-backup support, the DS1323 performs the important function of monitoring the remaining capacity of the lithium battery and providing a warning before the battery reaches end-of-life. Because the open-circuit voltage of a lithium backup battery remains relatively constant over the majority of its life, accurate battery monitoring requires loaded-battery voltage measurement. The DS1323 performs such measurement by periodically comparing the voltage of the battery as it supports an internal resistive load with a carefully selected reference voltage. If the battery voltage falls below the reference voltage under such conditions, the battery will soon reach end-of-life. As a result, the Battery Warning pin is activated to signal the need for battery replacement. http://www.maxim-ic.com/datasheet/index.mvp/id/7432 Tue, 15 May 2012 00:00:00 -0000 MAX44280: 1.8V, 50MHz, Low-Offset, Low-Power, Rail-to-Rail I/O Op Amp http://www.maxim-ic.com/datasheet/index.mvp/id/7576 The MAX44280 offers a unique combination of high speed, precision, low noise, and low-voltage operation making it ideally suited for a large number of signal processing functions such as filtering and amplification of signals in portable and industrial equipment. The amplifier features an input offset of less than 50µV and a high-gain bandwidth product of 50MHz while maintaining a low 1.8V supply rail. The device is internally compensated for gains of 5V/V or greater. The deviceâ€™s rail-to-rail input/outputs and low noise guarantee maximum dynamic range in demanding applications such as 12- to 16-bit SAR ADC drivers. Unlike traditional rail-to-rail input structures, input crossover distortion is absent due to an optimized input stage with an ultra-quiet charge pump. The MAX44280 includes a fast-power-on shutdown mode for further power savings. The MAX44280 operates from a supply range of 1.8V to 5.5V over the -40°C to +125°C temperature range and can operate down to 1.7V over the 0°C to +70°C temperature range. The MAX44280 is available in a small, 6-pin SC70 package and is also available in a 1mm x 1.5mm thin µDFN (ultra-thin LGA) package. http://www.maxim-ic.com/datasheet/index.mvp/id/7576 Tue, 15 May 2012 00:00:00 -0000 DS3655: Ultra-Low-Power Tamper-Detection Circuit with Nonimprinting Memory http://www.maxim-ic.com/datasheet/index.mvp/id/5362 The DS3655 is a tamper-reactive memory device specifically intended to address the requirements of equipment where data protection and security is critical. The device contains 64 bytes of a proprietary nonimprinting memory that can be erased in less than 100ns. The device contains a temperature sensor, as well as four tamper-detect logic inputs for interface to external sensors, interlocks, or antitamper meshes. Communication is conducted through an I²C-compatible interface. In the event of a primary power failure, an external battery source is automatically switched in to keep the internal memory, elapsed-time counter, and tamper-detection circuitry alive. Additionally, output signals are provided to flag a tamper event, monitor the internal oscillator, and power external circuitry from either the system supply or the battery. http://www.maxim-ic.com/datasheet/index.mvp/id/5362 Fri, 11 May 2012 00:00:00 -0000 MAX44005: RGB Color, Temperature, and Infrared Proximity Sensor http://www.maxim-ic.com/datasheet/index.mvp/id/7526 The MAX44005 integrates 7 sensors in one product: red, green, blue (RGB) sensors; an ambient light (clear) sensor; a temperature sensor; an ambient infrared sensor, and an infrared proximity sensor with an I²C interface. This highly integrated optical sensor includes a temperature sensor to improve reliability and performance. The IC computes all the light information with parallel data converters to make simultaneous light measurement in a very short time. The chip consumes only 15µA in RGBC + IR mode and operates at 1.8V supply voltage. The ICâ€™s RGB sensing capability improves the performance of end products by providing robust and precise information for ambient color sensing and color temperature measurement. The integrated proximity sensor uses a single-pulse LED scheme to achieve very low power consumption. This method also improves sunlight rejection and 50Hz/60Hz noise to deliver reliable proximity measurements. With this technology, the IC is a perfect solution for touch-screen portable devices and presence detection applications. The on-chip ambient sensor has the ability to make wide dynamic range 0.002~8388.61FW/cm² measurements. The ICâ€™s digital computation power provides programmability and flexibility for end-product design. A programmable interrupt pin minimizes the need to poll the device for data, freeing up microcontroller resources, and reducing system software overhead, and ultimately, power consumption. All these features are included in a tiny, 2mm x 2mm x 0.6mm optical package. http://www.maxim-ic.com/datasheet/index.mvp/id/7526 Fri, 11 May 2012 00:00:00 -0000 MAX6033: Ultra-High-Precision SOT23 Series Voltage Reference http://www.maxim-ic.com/datasheet/index.mvp/id/3259 The MAX6033 ultra-high-precision series voltage reference features a low 7ppm/°C (max) temperature coefficient and a low dropout voltage (200mV, max). Low temperature drift and low noise make the MAX6033 ideal for use with high-resolution ADCs or DACs. This device uses bandgap technology for low-noise performance and excellent accuracy. Laser-trimmed, high-stability, thin-film resistors, and postpackage trimming guarantee excellent initial accuracy (±0.04%, max). The MAX6033 consumes only 40µA of supply current and sources up to 15mA. Series mode references save system power and use minimal external components compared to two-terminal shunt references. The MAX6033 is available in the miniature 6-pin SOT23 package and is offered over the automotive temperature range (-40°C to +125°C). http://www.maxim-ic.com/datasheet/index.mvp/id/3259 Thu, 10 May 2012 00:00:00 -0000 MAX4747, MAX4748, MAX4749, MAX4750: 50Ω Low-Voltage, Quad SPST/Dual SPDT Analog Switches in WLP http://www.maxim-ic.com/datasheet/index.mvp/id/3652 <div class=text15> The MAX4747–MAX4750 low-voltage, quad single-pole single-throw (SPST)/dual single-pole/double-throw (SPDT) analog switches operate from a single +2V to +11V supply and handle rail-to-rail analog signals. These switches exhibit low leakage current (0.1nA) and consume less than 0.5nW (typ) of quiescent power, making them ideal for battery-powered applications. </div> <div class=text15> When powered from a +3V supply, these switches feature 50Ω (max) on-resistance (RON), with 3.5Ω (max) matching between channels and 9Ω (max) flatness over the specified signal range. </div> <div class=text15> The MAX4747 has four normally open (NO) switches, the MAX4748 has four normally closed (NC) switches, and the MAX4749 has two NΩ and two NC switches. The MAX4750 has two SPDT switches. These switches are available in 14-pin TSSOP, 16-pin TQFN (4mm x 4mm), and 16-bump WLP packages. This tiny chip-scale package occupies a 2mm x 2mm area and significantly reduces the required PC board area. </div> http://www.maxim-ic.com/datasheet/index.mvp/id/3652 Thu, 10 May 2012 00:00:00 -0000 MAX17085B: Integrated Charger, Dual Main Step-Down Controllers, and Dual LDO Regulators http://www.maxim-ic.com/datasheet/index.mvp/id/6199 <div class=text15> The MAX17085B is an all-in-one notebook power solution integrating a multichemistry battery charger, dual fixed output Quick-PWM™ step-down controllers, and dual keep-alive linear regulators: </div> <ul> <li class=li15>Charger: The high-frequency (~1.4MHz) multichemistry battery charger uses a current-mode, fixed inductor current ripple architecture that significantly reduces component size and cost. Low-offset sense amplifiers allow the use of low-value sense resistors for charging and input current limit. </li> <div class=text15> The charger uses n-channel switching MOSFETs. Adjustable charge current, charge voltage, and cell selection allow for flexible use with different battery packs. Charge current is set by an analog control input, or a PWM input. High-accuracy current-sense amplifiers provide fast cycle-by-cycle current-mode control to protect against short circuits to the battery and respond quickly to system load transients. Additionally, the charger provides a high-accuracy analog output that is proportional to the adapter current. </div> <div class=text15> An integrated charge pump controls an n-channel adapter selector switch. The charge pump remains active even when the charger is off. When the adapter is absent, a p-channel MOSFET selects the battery. </div> <li class=li15>Main SMPS: The dual Quick-PWM step-down controllers with synchronous rectification generate the 5V and 3.3V main power in a notebook. Low-side MOSFET sensing provides a simple low-cost, highly efficient valley current-limit protection. The MAX17085B also includes output undervoltage, output overvoltage, and thermal-fault protection. </li> <div class=text15> Separate enable inputs for each SMPS and a combined open-drain power-good output allow flexible power sequencing. Voltage soft-start reduces inrush current, while passive shutdown discharges the output through an internal switch. Fast transient response, with an extended on-time feature reduces output capacitance requirements. Selectable pulse-skipping mode and ultrasonic mode improve light-load efficiency. Ultrasonic mode operation maintains a minimum switching frequency at light loads, minimizing audible noise effects. </div> <li class=li15>Dual LDO Regulators: An internal 5V/100mA LDO5 with switchover can be used to either generate the 5V bias needed for power-up or other lower power "always-on" suspend supplies. Another 3.3V/50mA LDO3 provides "always-on" power to a system microcontroller. </ul> http://www.maxim-ic.com/datasheet/index.mvp/id/6199 Thu, 10 May 2012 00:00:00 -0000 MAX31826: 1-Wire Digital Temperature Sensor with 1Kb Lockable EEPROM http://www.maxim-ic.com/datasheet/index.mvp/id/7400 The MAX31826 digital thermometer provides 12-bit temperature measurements and communicates over a 1-Wire® bus that by definition requires only one data line (and ground) for communication with a central microcontroller. It has a -55°C to +125°C operating temperature range and is accurate to ±0.5°C over the -10°C to +85°C range. In addition, the device can derive power directly from the data line ("parasite power"), eliminating the need for an external power supply. Each device has a unique 64-bit serial code, which allows multiple devices to function on the same 1-Wire bus. Therefore, it is simple to use one microcontroller (the master device) to control many devices distributed over a large area. The device includes 128 bytes (1Kb) of EEPROM for storage of system data. The EEPROM can be locked to permanently prevent any further data writes. Four location address inputs simplify mapping of individual devices to specific locations. http://www.maxim-ic.com/datasheet/index.mvp/id/7400 Thu, 10 May 2012 00:00:00 -0000 MAX9716, MAX9717: Low-Cost, Mono, 1.4W BTL Audio Power Amplifiers http://www.maxim-ic.com/datasheet/index.mvp/id/4235 The MAX9716/MAX9717 audio power amplifiers are ideal for portable audio devices with internal speakers. A bridge-tied load (BTL) architecture minimizes external component count, while providing high-quality audio reproduction. Both devices deliver 1.4W continuous power into a 4Ω load with less than 1% Total Harmonic Distortion (THD) while operating from a single +5V supply. With an 8Ω load, both devices deliver 1W continuous power. These devices also deliver 350mW continuous power into an 8Ω load while operating from a single +3.0V supply. The devices are available as adjustable gain amplifiers (MAX9716/MAX9717A) or with internally fixed gains of 6dB, 9dB, and 12dB (MAX9717B/MAX9717C/MAX9717D), reducing component count. A low-power shutdown mode disables the bias generator and amplifiers, reducing quiescent current consumption to less than 10nA. These devices feature Maxim's industry-leading, comprehensive click-and-pop suppression that reduces audible clicks and pops during startup and shutdown. The MAX9717 features a headphone sense input (active-low BTL/SE) that senses when a headphone is connected to the device, disables the BTL slave driver, muting the speaker while driving the headphone as a single-ended load. The MAX9716 is pin compatible with the LM4890 and is available in 9-bump UCSP™, 8-pin TDFN (3mm x 3mm), and 8-pin µMAX® packages. The MAX9717 is available in 9-bump UCSP, 8-pin TDFN, and 8-pin µMAX packages. Both devices operate over the -40°C to +85°C extended temperature range. http://www.maxim-ic.com/datasheet/index.mvp/id/4235 Wed, 09 May 2012 00:00:00 -0000 MAX8939, MAX8939A: System Power Management for Mobile Handsets http://www.maxim-ic.com/datasheet/index.mvp/id/6772 The MAX8939/MAX8939A power management ICs contain the necessary supplies and features for supporting cell phone designs based on the Intel Mobile Communications (IMC) 61XX 3G platform. Designed to power all peripheral components in the platform, the MAX8939 also provides the necessary signals to control the 61XX baseband processor. The integrated lithium-ion (Li+) charger is protected up to 28V input and features a protected output voltage for supply of a USB transceiver. Proprietary thermal-regulation circuitry limits the die temperature during fast-charging or when the ICs are exposed to high ambient temperatures, allowing maximum charging current without damaging the ICs. A dedicated current regulator is included for driving a charge indicator LED. Four programmable low-noise, low-dropout linear regulators (LDOs) provide the supply for noise sensitive peripherals. A high power vibrator driver is I²C programmable in 70 PWM levels and 4 output voltages. The ICs also offer two step-up converters; one high power, low voltage (5V) to supply an external audio amplifier or camera flash, and a high voltage (28V) supply for the display and keyboard backlight. Two integrated 25mA current regulators provide independent ramp-up and ramp-down control, programmable through I²C. The MAX8939/MAX8939A are highly integrated ICs that require very few external components and are available in a compact 2.5mm x 3.0mm, 0.65mm max height wafer level package (WLP). http://www.maxim-ic.com/datasheet/index.mvp/id/6772 Wed, 09 May 2012 00:00:00 -0000 MAX3987: 8.5Gbps Quad Equalizer and Preemphasis Driver http://www.maxim-ic.com/datasheet/index.mvp/id/6449 The MAX3987 is a 4-channel receive and transmit equalizer (EQ). It compensates for transmission medium losses encountered with FR4 stripline/microstrip and/or high-speed cable. The device can be used at the beginning, middle, or end of a channel. The input equalization requires no setting, and the output preemphasis (PE) is programmable. For each channel, the preemphasis level, output drive level, output polarity, and powering down of unused outputs are programmable through an I²C serial interface. It can also be configured globally through pins. The device operates from a 2.5V or 3.3V supply, and is packaged in a 7mm x 7mm, 48-pin TQFN. http://www.maxim-ic.com/datasheet/index.mvp/id/6449 Tue, 08 May 2012 00:00:00 -0000 MAX6765, MAX6766, MAX6767, MAX6768, MAX6769, MAX6770, MAX6771, MAX6772, MAX6773, MAX6774: Automotive Micropower Linear Regulators with Supervisor http://www.maxim-ic.com/datasheet/index.mvp/id/5217 The MAX6765–MAX6774B are low-quiescent-current, high-voltage linear regulators that operate from 4V to 72V and deliver up to 100mA of load current. These low-power devices consume only 31µA of quiescent current, making them ideal for always-on automotive modules. These devices are offered with fixed standard output options of 5.0V, 3.3V, 2.5V, and 1.8V, or can be adjusted from 1.8V to 11V with two external resistors. The MAX6765–MAX6774B feature a push-pull or open-drain, active-low RESET output with either fixed or adjustable thresholds. Whenever the regulator's output falls below the reset threshold, the active-low RESET output asserts and remains asserted for at least the minimum reset timeout period after the output voltage exceeds its threshold. The minimum reset timeout period is offered with fixed values from 75µs to 200ms or can be adjusted externally with a small capacitor. These devices provide three regulator enable modes to accommodate several power-on schemes. The MAX6765/MAX6766/MAX6769/MAX6770/MAX6773/MAX6773B/MAX6774 MAX6774B feature a single traditional enable input (ENABLE) to turn on and off the regulator. The MAX6771/MAX6772 provide dual enable inputs (ENABLE1 and ENABLE2) to turn on and off the regulator either through an ignition switch or a bus transceiver. The MAX6767/MAX6768 provide a hold input (active-low HOLD) in addition to the enable input to allow for the implementation of a self-holding circuit without requiring external components. Setting active-low HOLD low after enabling the regulator forces the regulator to remain on even if ENABLE is subsequently set low. Releasing active-low HOLD shuts down the regulator. The MAX6773/MAX6773B/MAX6774/MAX6774B also include a watchdog input that monitors a pulse train from the microprocessor (µP) and generates a reset pulse if the watchdog input remains high or low for a duration longer than the 1.6s (typ) (MAX6773/MAX6774) or 50ms (typ) (MAX6773B/MAX6774B) watchdog timeout period. The MAX6765–MAX6774B are available in a small, thermally enhanced 3mm x 3mm TDFN package that can dissipate up to 1.951W, thereby supporting continuous regulator operation during high ambient temperatures, high battery voltage, and high load-current conditions. The MAX6765–MAX6774B are fully specified for a -40°C to +125°C operating temperature range. http://www.maxim-ic.com/datasheet/index.mvp/id/5217 Mon, 07 May 2012 00:00:00 -0000 MAX1227, MAX1229, MAX1231: 12-Bit 300ksps ADCs with FIFO, Temp Sensor, Internal Reference http://www.maxim-ic.com/datasheet/index.mvp/id/3874 The MAX1227/MAX1229/MAX1231 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and an internal temperature sensor. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. The maximum sampling rate is 300ksps using an external clock. The MAX1231 has 16 input channels, the MAX1229 has 12 input channels, and the MAX1227 has 8 input channels. All input channels are configurable for single-ended or differential inputs in unipolar or bipolar mode. All three devices operate from a +3V supply and contain a 10MHz SPI™/QSPI™/MICROWIRE™-compatible serial port. The MAX1231 is available in 28-pin 5mm x 5mm TQFN with exposed pad and 24-pin QSOP packages. The MAX1227/MAX1229 are only available in QSOP packages. All three devices are specified over the extended -40°C to +85°C temperature range. Complete the Signal Chain! <a href=/products/chain/max1231.cfm>Recommended Op Amps<img src="/images/chain.gif" border=0 hspace=3></a> http://www.maxim-ic.com/datasheet/index.mvp/id/3874 Mon, 07 May 2012 00:00:00 -0000