24-bit sigma-delta A/D converter achieves twice the speed of competing converters and claims industry’s best noise performance
Designed for process automation and instrumentation systems where data channel density is increasing and channels must be monitored faster, ADI’s new AD7176-2 A/D converter achieves a 50-kSPS (thousand samples per second) multi-channel scan rate. In an automated, high-precision production line, the performance of the AD7176-2 allows for faster manufacturing while achieving the precision, low-input bandwidth signal measurements that are inherently associated with the sigma-delta architecture. Measured on a single channel, the AD7176-2 delivers as many as 17.2 noise-free bits at 250 kSPS and 22 noise-free bits at 5 SPS.
The AD7176-2 A/D converter includes high-precision, on-chip peripherals, including a 2.5-V, ±2.5-ppm/°C reference and ±2.5% internal oscillator that reduce board space and lower bill of materials costs while maintaining high performance. The new converter features flexible on-chip digital filters, which optimise settling, resolution and line frequency rejection. The new converter also can be configured on a per-channel basis allowing for different filter and output data rates as well as per-channel offset and gain error correction.
The ADC features a 5-SPS to 250-kSPS output rate for fast and flexible updates and provides up to 90-dB 50-Hz and 60-Hz line frequency rejection using enhanced 50-Hz and 60-Hz rejection filters.
The device delivers a total current consumption of 7.8-mA.
Availability and Pricing
The AD7176-2 packaged in a 24-lead TSSOP is sampling now and is priced at $10.25 each In 1,000 quantities.
More information about the AD7176-2 ADC at www.analog.com/AD7176-2
