LINEAR Manuals (Industrial)

LTC1840 is a fan controller with two 8-bit current output DACs, two tachometer interfaces, and four general purpose I/O (GPIO) pins. It operates from a single supply with a range of 2.7V to 5.75V. A current output DAC is used to control an external switching regulator, which controls the fan speed. A current output DAC and tachometer allow a controller to form a closed control loop on fan velocity. The GPIO pins can be used as digital inputs or open drain pull-down outputs. The part features a simple 2-wire I2C and SMBus compat- ible serial interface that allows communication between many devices. The interface includes a fault status register that reflects the state of the part and which can be polled to find the cause of a fault condition. Other operational characteristics of the part, such as DAC output currents, GPIO modes, and tachometer frequency, are also pro- grammed through the serial interface. Two address pins provide nine possible device addresses. The BLAST pin is provided to force the DAC output currents to program the maximum regulator output voltages through a single pin and gate the operation of the serial access timer.

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LTC4260 is a high voltage hot swap controller that supports I2C communication and can monitor current and voltage.

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The LT ® 1074 is a 5A (LT1076 is rated at 2A) monolithic bipolar switching regulator which requires only a few external parts for normal operation. The power switch, all oscillator and control circuitry, and all current limit components, are included on the chip.

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The LTC3426 is a 1.2MHz step-up DC/DC converter in SOT-23 package. It features an internal 2A MOSFET switch, 1.2MHz switching frequency, integrated soft-start, and low 1.6V VIN operation. The converter can deliver 5V at 800mA from a 3.3V input or 3.3V at 800mA from a 2.5V input. It is suitable for applications with limited space and requires small, low profile external components. The LTC3426 can be used for white LED driver supply, local 3.3V or 5V supply, and battery backup.

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This document is the application manual of LT1115 1115fa ultralow noise, low distortion, audio operational amplifier. The document mainly introduces the characteristics, application scenarios, circuit design, etc. of the product.

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LT1028/LT1128 are ultralow noise, precision high speed op amps with voltage noise of 0.85nV/√Hz@1kHz, 0.1µV/°C drift, 10µV output offset voltage, 30 million gain, 50MHz gain-bandwidth product.

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LTC1051/LTC1053 are high performance, low cost dual/quad zero-drift operational amplifiers. The unique achievement of the LTC1051/LTC1053 is that they integrate on chip the sample-and-hold capacitors usually required externally by other chopper amplifiers. Further, the LTC1051/LTC1053 offer better combined overall DC and AC performance than is available from other chopper stabilized amplifiers with or without internal sample/hold capacitors. The LTC1051/LTC1053 have an offset voltage of 0.5µV, drift of 0.01µV/°C, DC to 10Hz, input noise voltage typically 1.5µVP-P and typical voltage gain of 140dB. The slew rate of 4V/µs and gain bandwidth product of 2.5MHz are achieved with only 1mA of supply current per op amp. Overload recover times from positive and negative saturation conditions are 1.5ms and 3ms respectively, about a 100 or more times improvement over chopper amplifiers using external capacitors. The LTC1051 is available in an 8-lead standard plastic dual-in-line package as well as a 16-pin SW package. The LTC1053 is available in a standard 14-pin plastic package and an 18-pin SO. The LTC1051/LTC1053 are plug in replacements for most standard dual/quad op amps with improved performance.

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The LT3572 is a highly integrated dual piezo motor driver capable of driving two piezo motors at up to 40V from a 5V supply. Each piezo driver can be independently turned on or off along with the boost converter. The boost regulator has a soft-start capability that limits the inrush current at start-up. The boost regulator switching frequency is set by an external resistor or the frequency can be synchronized by an external clock. A PGOOD pin indicates when the output of the boost converter is in regulation and the piezo drivers are allowed to start switching. The LT3572 is available in a (4mm × 4mm) 20-pin QFN package.

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LTC6244 is a high performance, low noise, rail-to-rail, CMOS op amp from LTC company. It features a 50MHz gain bandwidth, 40V/µs slew rate, 1pA of input bias current, low input capacitance and rail-to-rail output swing. 0.1Hz to 10Hz noise is just 1.5µVP-P and 1kHz noise is guaranteed to be less than 12nV/√Hz. This excellent AC and noise performance is combined with wide supply range operation, a maximum offset voltage of just 100µV and drift of only 2.5µV/°C, making it suitable for use in many fast signal processing applications, such as photodiode amplifiers. This op amp has an output stage that swings within 35mV of either supply rail to maximize the signal dynamic range in low supply applications. The input common mode range extends to the negative supply. It is fully specified on 3V and 5V, and an HV version guarantees operation on supplies of ±5V. The LTC6244 is available in the 8-pin MSOP, and for compact designs, it is packaged in the tiny dual fine pitch lead free (DFN) package.

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This datasheet introduces the features and characteristics of LT1672/LT1673/LT1674 products. The product is a low power (IS ≤ 2µA), high precision (AV ≥ 5) op amp with reverse polarity input, rail to rail input and output, low input bias current, low input offset current, high open loop gain (AVOL) and other features. The product is suitable for various harsh environments.

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The LT1317/LT1317B are micropower, fixed frequency step-up DC/DC converters that operate over a wide input voltage range of 1.5V to 12V. The LT1317 features automatic shifting to power saving Burst ModeTM operation at light loads. High efficiency is maintained over a broad 300µA to 200mA load range. Peak switch current during Burst Mode operation is kept below 250mA for most operating conditions which results in low output ripple voltage, even at high input voltages. The LT1317B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency. The LT1317/LT1317B contain an internal low-battery detector with a 200mV reference that stays alive when the device goes into shutdown. No-load quiescent current of the LT1317 is 100µA and shuts down to 30µA. The internal NPN power switch handles a 500mA current with a voltage drop of just 300mV. The LT1317/LT1317B are available in MS8 and SO-8 packages.

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The LT3497 is a dual full function step-up DC/DC converter specifically designed to drive up to 12 white LEDs (6 white LEDs in series per converter) from a Li-Ion cell.

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The LTC6084/LTC6085 are low cost, low offset, current range 1pA of dual/quad, single-stable output, CMOS operational amplifiers. 1.5MHz gain bandwidth and 0.5V/μs slew rate, as well as the wide supply range and a low 0.75mV offset, make the LTC6084/LTC6085 useful in a wide variety of applications from data acquisition to medical equipment and consumer electronics. The 110μA supply current and the shutdown mode are ideal for signal processing applications which demand performance with minimal power. The LTC6084/LTC6085's output stage swings within 5mV of either supply rail to maximize signal dynamic range in low supply applications. The input common mode range includes the entire supply voltage. These op amps are specified on power supply voltages of 2.5V and 5V from –40°C to 125°C. The dual amplifier LTC6084 is available in 8-lead MSOP and 10-lead DFN packages. The quad amplifier LTC6085 is available in 16-lead SSOP and DFN packages.

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The LTC2414/LTC2418 are 8-/16-channel (4-/8-differential) micropower 24-bit ∆Σ analog-to-digital converters. They operate from 2.7V to 5.5V and include an integrated oscillator, 2ppm INL and 0.2ppm RMS noise. They use delta-sigma technology and provide single cycle settling time for multiplexed applications. Through a single pin, the LTC2414/LTC2418 can be configured for better than 110dB differential mode rejection at 50Hz or 60Hz ±2%, or they can be driven by an external oscillator for a user-defined rejection frequency. The internal oscillator requires no external frequency setting components. The LTC2414/LTC2418 accept any external differential reference voltage from 0.1V to VCC for flexible ratiometric and remote sensing measurement applications. They can be configured to take 4/8 differential channels or 8/16 single-ended channels. The full-scale bipolar input range is from –0.5VREF to 0.5VREF. The reference common mode voltage, VREFCM, and the input common mode voltage, VINCM, may be independently set within GND to VCC. The DC common mode input rejection is better than 140dB. The LTC2414/LTC2418 communicate through a flexible 4-wire digital interface that is compatible with SPI and MICROWIRE TM protocols.

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The LT1109A is a micropower DC/DC converter that can be used as a flash memory VPP generator. It supports 5V and 12V fixed outputs, or an adjustable version. The device uses off-the-shelf inductors, is low cost, and only requires an 8-pin DIP or SOIC package. The no-load current is only 360µA, making it ideal for cost-sensitive applications where standby current must be kept to a minimum. The LT1109A-12 can provide over 150mA of 12V power from a 5V supply, enough to program four flash memory chips simultaneously. The LT1109A-5 can provide up to 110mA of 5V power from a 2V input. The device has a shutdown pin that turns off the oscillator when the pin is low. The gated-oscillator design requires no frequency compensation components. High frequency 120kHz operation permits the use of small surface mount inductors and capacitors.

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The LTC3200/LTC3200-5 are low noise, constant frequency switched capacitor voltage doublers. They are ideally suited for small, battery-powered applications and have features such as low external parts count, constant switching frequency, low output and input ripple, thermal shutdown capability, soft-start circuitry, and low quiescent current in shutdown mode.

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LT6003/LT6004/LT6005 is a low power op amp from Texas Instruments. It can operate in a wide voltage range of 1.6V to 16V and has low static current and high precision. It is very suitable for portable applications.

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This manual provides specifications, features, and wiring information for Haydon Switch & Instrument 36000 series linear motors

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The LTC ®1736 is a synchronous step-down switching regulator controller optimized for CPU power. The output voltage is programmed by a 5-bit digital-to-analog converter (DAC) that adjusts the output voltage from 0.925V to 2.00V according to Intel mobile VID specifications. The 0.8V reference is compatible with future microprocessor generations. The operating frequency (synchronizable up to 500kHz) is set by an external capacitor allowing maximum flexibility in optimizing efficiency. The output voltage is monitored by a power good window comparator that indicates when the output is within 7.5% of its programmed value.

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