A low phase noise integer-N synthesiser with an integrated VCO and an ultra-low jitter clock distribution section has been introduced by Linear Technology that is well suited for clocking data converters. The LTC6951 features four current mode logic (CML) outputs, each equipped with an independent low noise clock divider and digital delay block to cover a wide frequency range between 1.95MHz and 2,700MHz.

Linear introduces the LTM8064, a step-down DC/DC µModule regulator with a 6V to 58V (60VMAX) input voltage range and adjustable load current control with ±10% accuracy at 7A. The LTM8064 can be used as a point-of-load step-down regulator operating from 24, 36 and 48V voltage rails used in communication infrastructure, high end computers, test equipment, automotive, avionics and a wide variety of industrial equipment.

A rugged diode-OR controller for dual feed high power telecom and datacom boards has been introduced by Linear Technology. The LTC4371 provides seamless hand-off between redundant power supplies, replacing power Schottky diodes and associated heat sinks with N-channel MOSFETs, significantly reducing power loss, voltage drop and solution size.

Linear Technology Corporation introduces the LTC2873, an RS485/RS232 multiprotocol transceiver in a small 20mm² package. The LTC2873 integrates all the functions necessary to provide the most compact multiprotocol IC available today. Supporting ±26kV HBM ESD bus protection, the LTC2873 provides a robust software-selectable interface for 3 to 5.5V systems.

Combining two high voltage 2.5 and 1.5A channels with a lower voltage 1.8A channel to deliver three independent voltage outputs as low as 0.8V, Linear Technology announces the LT8601. The 42V input capable, high efficiency triple output synchronous monolithic step-down switching regulator uses synchronous rectification topology to deliver up to 93% efficiency.

The LTC5548, a double balanced mixer that operates either as an up- or downconverter with a wide frequency range from 2 to 14GHz, has been introduced by Linear Technology. The LTC5548 features integrated balun transformers at the RF and LO ports, providing 50Ω match from 2 to 13.6GHz and from 1 to 12GHz at each port, respectively, while enabling single-ended operation.

  Of the commonly-used step-up and step-down topologies, those that produce low EMI are the most desirable for automotive LED driver circuits, says Keith Szolusha, applications engineering section leader, Linear Technology.

Linear Technology Corporation introduces the LTM4650, a dual 25A or single 50A output step-down µModule regulator with onboard shielded inductors, MOSFETs and a dual DC/DC regulator IC housed in a small thermally enhanced plastic package. The device is offered in a 16x16x5.01mm BGA with a patented built-in heat sink.

Linear Technology Corporation announces the LT8641, a 3.5A, 65V input capable synchronous step-down switching regulator. A unique Silent Switcherarchitecture, combined with spread spectrum frequency modulation, reduces EMI/EMC emissions by more than 25dB even with switching frequencies in excess of 2MHz, enabling it to easily pass the automotive CISPR25 class 5 peak and average limits.

Linear Technology introduces the LTM8067 and LTM8068, DC/DC µModule regulators with 2kVAC galvanic isolation. The LTM8067 and LTM8068 include an isolating transformer, control circuitry, power switches and other supporting components in a 9x11.25x4.92mm BGA package. Only one resister, plus input and output capacitors are required to complete the design.

Linear Technology Corporation have opened the company’s third semiconductor test facility in Singapore. The additional space for staff, equipment and materials will allow the company to more than double its production capacity of advanced analog circuits and µModule (micromodule) products. This will strengthen Linear Technology’s ability to meet the growing demand for high performance analogue integrated circuits worldwide.

Linear Technology introduces the LTC2335-18, an 18-bit, 8-channel 1Msps multiplexed input Successive Approximation Register (SAR) ADC with independently configurable input ranges. Each SoftSpan input can be software configured on a conversion-by-conversion basis to accept ±10.24V, 0V to 10.24V, ±5.12V or 0V to 5.12V true bipolar input signals.

Energy harvesting can significantly extend the lifetime of installed batteries, especially when power requirements are low, reducing long term maintenance costs and down-time. Dave Salerno, Design Section Leader, Power Products, Linear Technology Corporation explains.

Featuring accurate current sharing between phases and differential output voltage sensing, Linear Technology has announced a quad output multiphase synchronous step-down DC/DC controller. The LTC7851/-1 works in conjunction with external power train devices such as DrMOS and power blocks as well as discrete N-channel MOSFETs and associated gate drivers, enabling flexible design configurations.

Providing key usability, monitoring and protection features, the LT3089 rugged 800mA wide input voltage range linear regulator has been unveiled by Linear Technology. The device has an extended SOA (Safe Operating Area) compared to existing regulators, making it suitable for high input-to-output voltage and high output current applications where older regulators limit the output.

Linear introduces the LT6375, a unity-gain difference amplifier with integrated precision matched resistors, which precisely level shifts and buffers small difference signals while rejecting up to ±270V common mode. The A-grade version achieves unprecedented performance: CMRR is 97dB (min), initial gain error is 35ppm (max), gain drift is 1ppm/°C (max) and gain nonlinearity is 2ppm (max) with a common mode divide ratio of 25:1.

Linear Technology Corporation introduces the LTC3643, a bidirectional, high voltage boost capacitor charger that automatically converts to a buck regulator for system backup. The proprietary, single-inductor topology with integrated PowerPath™ functionality does the work of two separate switching regulators, reducing size, cost and complexity.

The LTC3649 is a high efficiency, 60V, 4A synchronous buck regulator incorporating a constant frequency, current mode architecture and programmable output current and output voltage, which are set with a single external resistor. The LTC3649 operates from an input voltage range of 3.1 to 60V and provides an adjustable rail-to-rail output voltage range from 0 to 0.5V below VIN, while delivering up to 4A of continuous output current.

Linear Technology has introduced a high voltage, low noise, LDO voltage linear regulator offering precision, programmable current limit, active discharge, a power good flag and improved Power Supply Rejection Ratio (PSRR) capability. The LT3066 delivers up to 500mA output current with a 300mV dropout voltage at full load.

Linear introduces the LTC4236, a dual ideal diode-OR and single Hot Swap controller with a load current monitoring output. High availability systems-servers, network routers, and solid-state drives-power circuit boards with multiple power supply feeds. The LTC4236 combines (diode-ORs) two power supplies while providing inrush current control, overcurrent protection, and current monitoring, all in a compact footprint.