Embedded System News .Com

Entries summary:

• Max8884y Max8884z, Dual 300ma Ldos
• Dual Output, Lvpecl Crystal Oscillator
• Power Supplies, Power Supply Controller
• Packet Transmissions, Electro Mechanical Switch

The MAX8884Y/MAX8884Z have individual enables for the step-down converter and two LDO outputs, as well as pin-selectable output voltages for the step-down converter (1.2V/1.8V) and one LDO (1.8V/2.8V). Combining flexible control with high efficiency (> 90%) and a compact footprint, the MAX8884Y/MAX8884Z are well suited for powering multiload applications in portable devices such as cell phones, smartphones, MP3 and DVD players, and digital cameras/camcorders. The MAX8884Y/MAX8884Z offer a very-low-power (0.1µA, typ) shutdown mode. Both devices feature thermal-overload and overcurrent protection, and are fully specified to operate over the -40°C to +85°C extended temperature range. The MAX8884Y/MAX8884Z are available in a lead-free, 2mm x 2mm x 0.7mm, 16-bump CSP..

The DS4625 device produces dual-output-frequency combinations ranging from 100MHz to 625MHz, allowing designers to replace two oscillators with a single device. Packaged in a 5mm x 3.2mm LCC, the DS4625 is 55% smaller than conventional solutions (5mm x 7mm). This device ensures leading-edge jitter performance [< 1.0psRMS (12kHz to 20MHz)] for high-current (95mA to 105mA, typ), high-frequency (> 100MHz), differential-output (LVPECL) applications. The DS4625 is thus ideal for communications systems that require high-performance clock generation such as Fibre Channel, Ethernet, 10G Ethernet, SONET/SDH, InfiniBand®, GPON, BPON, PCI Express®, and SAS/SATA...

The MAX16064 offers a PMBus™ interface for programming, sequencing, monitoring, and margining power supplies. Connect the MAX16064 to up to four all-analog low-cost power supplies to create a fully programmable, highly accurate, digital power-management solution. Using the existing analog power-management solutions, the device provides unequaled control and monitoring capabilities that were previously only available in all-digital power supplies. The MAX16064 digital controller is designed for high-performance, high-reliability systems with multiple power supplies...

The demonstrator shows how a single switch press is all that is required to enable the JN5148 to carry out system startup and initialisation, followed by a succession of packet transmissions to increase the probability of packet delivery to the receiver. Jennic previously announced a series of energy harvesting technology demonstrators utilising thermal, vibrational, RF and solar energy harvesting techniques to power end devices in a wireless sensor network. Jennic’s engineers ensured sufficient energy was left over for a minimum of three packet transmissions to increase the probability of packet delivery to the receiver. The JN5148 totally hit the mark, consuming what in essence equates to an average of 7mA at 2volts for 7ms, the 100µJ budget...