A PCI Express CAN Interface is offered with one or two CAN channels. Using two CAN channels allows access to two independent CAN networks, which may run at different baud rates. With two networks, one network can handle high-priority tasks while the other manages noncritical operations. The interface complies with ISO 11898 and CAN 2.0B. Software drivers are available for Windows, Linux, and QNX. The CAN-PCIe/2000 includes high-speed optocouplers and dc-dc convertors standard. Optoisolation increases the reliability of the CAN node and protects the CAN board from voltage surges and other electrical interference. The PCI Express Interface comes with a CAN monitoring and analyzing software tool plus. ESD Electronics Inc., Greenfield, MA, tel: 413-772-3170.
A 32-bit CompactPCI (cPCI) backplane, which can be used in high-performance medical systems, is available in a 6-slot size. Utilizing controlled-impedance stripline design, the backplanes have virtually zero crosstalk. The 32-bit version cPCI offers hundreds of I/O pins across the backplane that on the 64-bit version are defined and therefore unavailable. The 32-bit backplane line currently includes versions in 3, 6, and 8 slots. The company also offers a range of 64-bit cPCI backplanes and other CompactPCI accessories. All cPCI backplanes comply with PICMG specifications. Elma Bustronic, Fremont, CA, tel: 510-490-7388.
Providing design engineers with a precision device for medical equipment requiring tight tolerances and ratios, a series of precision resistor networks is available in a ceramic ball grid array (BGA) package. The CHC-Precision BGA series package features all circuits on the bottom side of the device to eliminate wrap-around terminations. The resistor networks are available in 8- and 16-pad packages. The BGA features a resistance range from 10 W to 100 k W , with a maximum working voltage of 50 V. The device features ratio tolerances to ±0.05% and absolute tolerances to ±0.1%. Operating temperatures range from –55°C to 150°C. IRC, Corpus Christi, TX, tel: 361-992-7900.
An open, programmable, integrated digital signal processor (DSP) is suitable for integration into digital hearing aids with high-precision sound. The Ezairo 5900 series of circuits and hybrids offers 24-bit precision computing with a configurable signal-processing engine. The series comes with four parallel input channels and supports advanced adaptive algorithms with extremely low group delay. The processor consumes little power, using 1 mA at full processing power. It features a direct-drive output for zero-biased receivers. Advanced encryption to protect manufacturer and user data comes standard. System clock speeds ranging from 1.28 to 5.12 MHz are available for computational performance. The DSP measures 5.98 x 3.46 x 1.6 mm. , Pocatello, ID, tel: 208/233-4690.