LINEAR Manuals

The LTC®4071 is an easy-to-use, tiny shunt battery system for Li-Ion/Polymer batteries, which integrates a charger and battery pack protection in one IC. The LTC4071, with its 550nA operating current, charges and protects batteries at up to 50mA from previously unusable very low current, intermittent or continuous charging sources. A near zero current (<0.1nA) low battery latching disconnect function protects even low capacity batteries from deep discharge and potentially irreparable damage. Housed in a low profile (0.75mm) 8-lead 2mm × 3mm DFN package, the LTC4071 provides the only complete and ultracompact battery charger and protection solution operating with low level power sources such as energy scavenging/ harvesting, resistive isolation or solar-powered systems. It can charge Li-Ion/Polymer, coin cell and thin film batteries.

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Our new ultralow noise, integer-N frequency synthesizers provide best-in-class phase noise and spurious performance. The LTC®6946 is a complete frequency synthesizer that includes a high performance, low noise, 5.7GHz phase-locked loop (PLL) with a fully integrated, low phase noise VCO. The LTC6945 separates the low 1/f corner PLL core for use with an external VCO up to 6GHz. The free, easy-to-use PLLWizard™ CAD tool quickly and accurately simulates synthesizer performance to ensure an optimal design.

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The LTC5569 is a low power dual mixer from Linear Technology, with a frequency range of 300MHz to 4GHz, IIP3 of 26.8dBm, gain of 2dB, NF/5dBm Blocking of 11.7/17.0dB and a power supply voltage of 3.3V/182mA.

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The LT4363 and LT4366 are high voltage surge stoppers with adjustable voltage threshold, which can be used in harsh industrial, automotive and avionic environments

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LTC2756/2758 are 18-bit single/dual channel D/A converters with ±1LSB INL and DNL errors, high-precision DC output characteristics with guaranteed monotonicity over temperature range of -40°C to 85°C. Integrated precision resistors support reference voltage inversion, gain and offset adjustment, bipolar level shift, eliminating expensive external precision resistors and gain stages. 2.7V to 5.5V single-supply operation, support 3-wire SPI interface to read all registers.

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The LTC2870/71/72 is a family of multiprotocol transceivers with switchable integrated termination for 3.3V and 5V systems. These devices integrate pin-controlled termination resistors that automatically switch in or out to match the transceiver’s protocol selection of RS232 or RS485, allowing for easy interface reconfiguration and elimination of external resistors and control relays. The LTC2870 and LTC2871 can be configured as two RS232 single-ended transceivers or one RS485 differential transceiver on shared (LTC2870) or dedicated (LTC2871) I/O lines, while the LTC2872 can be configured as four RS232 transceivers or two RS485 transceivers, or combinations of both, on shared I/O lines. This on-the-fly configurability helps reduce component count for multiprotocol networks.

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This datasheet provides detailed information for the LTC2480-LTC2497 series of No Latency Delta-Sigma™ ADCs Easy Drive™ ∆∑ ADCs, including pin configurations, performance parameters, and application circuits.

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The document describes a 18-bit/16-bit no-latency, 2.5Msps SAR ADC with wide ±4.096V fully differential inputs, maximizing dynamic range to achieve 100dB SNR performance. It has pin-configurable input ranges of ±4.096V, ±2.048V or 0V to 4.096V, precision DC specifications, and a precision internal reference and reference buffer. The ADC is suitable for various applications.

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This application note introduces a new power buffer that can drive non-linear or reactive loads. The buffer can isolate and drive almost any reactive load and also offers current limiting and thermal overload protection to protect the device against output fault conditions.

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This application note describes the use of thermal techniques in measurement and control circuits. By utilizing the relationship between temperature and electronic devices, it is possible to find solutions to difficult circuit design problems.

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This application note describes the applications of LTC®1043. It is a multi-pole switch that can be used in board-level applications. LTC1043 integrates multiple switches and can achieve multi-channel switching. It controls the switches by a non-overlapping clock.

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This document introduces how to design linear circuits for 5V single supply operation.

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This application note introduces the circuit techniques for clock sources.

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This application note describes how to achieve complex linear circuit functions, such as data converters and sample-holds, in circuits powered by a single 1.5V cell.

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