Electronics News
Archive : 23 June 2008 год
08:55Fused Tantalum Capacitors
AVX’s TAW series of fused tantalum capacitors protect against damaging high DC leakage currents at high currents. Short circuit failure mode protection is accomplished using an internal fuse connected in series with the capacitor.
When the fuse exceeds its current limit, the fused capacitor will fail safe by effectively removing itself from the circuit by creating a high resistance path of above 10MΩ. In some cases this can mean the difference between a total circuit loss and barely detectible performance degradation.
The TAW series tantalum capacitors are fully lead-free and RoHS compliant.
When the fuse exceeds its current limit, the fused capacitor will fail safe by effectively removing itself from the circuit by creating a high resistance path of above 10MΩ. In some cases this can mean the difference between a total circuit loss and barely detectible performance degradation.
The TAW series tantalum capacitors are fully lead-free and RoHS compliant.
Source: www.channel-e.biz
08:5424-Bit Sigma-Delta ADCs with ARM7 Core
Analog Devices introduced a microcontroller family with data conversion. The ADuC706x family expands ADI’s analog microcontroller portfolio by incorporating two 24-bit sigma-delta analog-to-digital converters and a host of analog peripherals with a 32-bit ARM7 core.
Designed for 4–20 mA loop-powered applications in factory automation and for precision instruments, the ADuC706x family includes the ADuC7060, ADuC7061 and ADuC7062. The devices feature an ADC noise performance of 60 nV. In addition to the 24-bit sigma-delta ADCs and ARM7 core with eight interrupt priority levels, the analog microcontrollers incorporate 32 Kbytes of flash memory and 4 Kbytes of SRAM, a programmable gain amplifier, multiplexers, buffers, an auxiliary 24-bit ADC for cold junction compensation and interfacing to thermocouple applications, and SPI (serial peripheral interface), UART (universal asynchronous receivers-transmitters) and I²C ports. The devices consume 2.6 mA with all peripherals activated.
The ADuC7060, available in a 7 mm × 7 mm 48-pin chip-scale (QFN) package. The ADuC7061 and ADuC7062 come in 5 mm × 5 mm 32-pin chip-scale (QFN) packages, The ADuC7062 does not include the auxiliary ADC channel.
The ADuC706x family is available in sample quantities and will be in full factory production in November 2008. The ADuC7060, ADuC7061 and ADuC7062 analog microcontrollers are priced at $4.90, $3.95 and $3.40 respectively, in 1,000-unit quantities.
Designed for 4–20 mA loop-powered applications in factory automation and for precision instruments, the ADuC706x family includes the ADuC7060, ADuC7061 and ADuC7062. The devices feature an ADC noise performance of 60 nV. In addition to the 24-bit sigma-delta ADCs and ARM7 core with eight interrupt priority levels, the analog microcontrollers incorporate 32 Kbytes of flash memory and 4 Kbytes of SRAM, a programmable gain amplifier, multiplexers, buffers, an auxiliary 24-bit ADC for cold junction compensation and interfacing to thermocouple applications, and SPI (serial peripheral interface), UART (universal asynchronous receivers-transmitters) and I²C ports. The devices consume 2.6 mA with all peripherals activated.
The ADuC7060, available in a 7 mm × 7 mm 48-pin chip-scale (QFN) package. The ADuC7061 and ADuC7062 come in 5 mm × 5 mm 32-pin chip-scale (QFN) packages, The ADuC7062 does not include the auxiliary ADC channel.
The ADuC706x family is available in sample quantities and will be in full factory production in November 2008. The ADuC7060, ADuC7061 and ADuC7062 analog microcontrollers are priced at $4.90, $3.95 and $3.40 respectively, in 1,000-unit quantities.
Source: www.channel-e.biz