LINEAR Manuals

This article discusses how to optimize performance by minimizing IM2 nonlinearity and DC offset that reduce the dynamic range of zero-IF receivers, thus offering a viable alternative to an otherwise challenging design.

This document introduces the LTC3876, a complete DDR power solution that is compatible with DDR1, DDR2, DDR3 and DDR4 lower voltage standards. The IC includes VDDQ and VTT DC/DC controllers and a precision linear VTT reference.

The LT8610 and LT8611 are 42V, 2.5A synchronous step-down regulators that meet the stringent high input voltage and low output voltage requirements of automotive, industrial and communications applications. By replacing an external Schottky diode with an internal synchronous power switch, the solution size is minimized and efficiency is increased while reducing power dissipation. These regulators are designed to be compact and allow inductor size to be selected based on the output load requirements of the application, providing short-circuit robustness.

The LTM®9001 is a 16-bit, IF/baseband receiver subsystem that leverages years of applications engineering expertise to maximize high speed ADC performance. The LTM9001 alleviates the need for driver and ADC impedance matching, filtering, bypass placement and layout, eliminating long hours of troubleshooting and reducing time to market. With no external components required, the LTM9001 provides a high performance solution in less than half the board space of a discrete implementation.

Linear Technology now offers a family of Power over Ethernet interface controllers for emerging PoE+ applications, including higher performance wireless access points, PTZ security cameras and RFID readers. The LTC®4266 quad and LTC4274 single PSEs, and LTC4265, LTC4269, LTC4278 PDs are IEEE 802.3at compliant solutions that support the new PoE+ standard with 25.5W of PD power and 2-Event Classification signaling. This new family is fully backward compatible with IEEE 802.3af and unlocks the potential for high power PoE applications.

The document describes the features and characteristics of the LT2940 power and current monitor produced by Linear Technology Corporation. The monitor can be used in a voltage range of 4V to 80V, has a 4-quadrant analog multiplier, outputs 500kHz bandwidth, and can measure positive and reverse currents and voltages. Applications include board-level power and current monitoring, line card and server power monitoring, power circuit breaker, MOSFET power monitoring, power/energy meters, battery charger metering, and power control loops.

This file introduces the LT4250, LT4252C and LT4261 high voltage hot swap controllers, which have adjustable surge current limit, short circuit current limit, undervoltage protection and overvoltage protection functions.

The LTM®2882 is an isolated RS232 transceiver that guards against large ground-to-ground differentials. The LTM2882’s internal inductive isolation barrier breaks ground loops by isolating the logic level interface and line transceiver. An onboard DC/DC converter provides power to the transceiver, with an isolated 5V supply output for powering additional system circuitry. With 2500VRMS galvanic isolation, onboard secondary power and two RS232 drivers and receivers, the LTM2882 requires no external components and provides a small, complete µModule solution for isolated serial data communications.

The LTC®2757 is the first monolithic 18-bit DAC to offer precision DC specifications of ±1LSB INL (max) and ±1LSB DNL (max). The LTC2757 provides better than ±4ppm accuracy over four bipolar and two unipolar output ranges for precision adjustment in open loop applications. Excellent temperature drift and power supply rejection simplify system design.

The LTC2393-16 is a 16-bit low-power analog-to-digital converter with an internal reference and no-latency operation, enabling high accuracy measurements.

Linear Technology's LTC6256, LTC6247, and LTC6253 families of high-performance op amps offer unmatched speed-power and noise-power efficiency. These amplifiers feature rail-to-rail inputs and outputs as well as outstanding precision specifications.

The LTC2656 is a 16-bit, eight-channel voltage output DAC from Linear Technology. It features guaranteed ±4LSB INL and ±1LSB DNL, and achieves ultralow AC and DC crosstalk to ensure rock-solid control in precision multichannel open or closed loop systems. The complete family of quad and octal DACs integrates a precision 1.25V or 2.048V reference that achieves 2ppm/°C typical and 10ppm/°C maximum temperature coefficient. The ±4LSB (max) INL, ±2mV (max) offset error and ±0.1% (max) gain error DC specifications ensure you’re designing with the industry’s best unipolar DACs.