AD7176-2BRUZ 24-bit, 250 KSPS Σ-Δ ADC with 20μS settling time
The AD7176-2 is a fast settling, high precision, high resolution, multiplexed, 24-bitΣ-Δ ADC, with a low bandwidth input signal with a fully flexible ODR (Output Data Rate) between 5SPS and 250kSPS.
The AD7176-2 combines two differential or four single-ended analog input channels with an integrated crosspoint multiplexer with an industrial beat frequency power map.
For 50 Hz and 60 Hz environments, the AD7176-2 specific filter minimizes settling time or maximizes line frequency rejection. These enhanced filters use simultaneous 50Hz and 60Hz rejection with output data rates of 27SPS.
The AD7176-2 has an ODR of 250ksps and has RMS noise of 9.7uV when operating on the default Sinc5+Sinc1 filter.
The AD7176-2 is configured via SPI in a small 24-lead TSSOP package to reduce board size.
An integrated precision 2.5 V (2 ppm/°C) reference voltage and integrated oscillator increase functionality and reduce external component count.
- Optional Split Supply Operation +/-2.5V (AVDD1-AVSS)
- System offset and gain errors can be corrected for individual channels.
- Low noise figure over the entire ODR range
- Fully compatible with SPI, QSPI, Microwire, and DSP
- Sinc5 + Sinc1 filter, Sinc3 filter, and enhanced 50Hz and 60Hz rejection digital filter options (see Digital Filter FAQ)
- SPI configuration control
- 3- or 4-wire digital interface (Schmitt trigger on SCLK)
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Features and benefits
Fast and flexible output rates: 5SPS to 250KSPS
Fast settling time: 20 μs
Channel scan data rate: 50 kSPS/channel
Performance specifications
17-bit noise-free resolution (250 kSPS)
20-bit noise-free resolution (2.5 kSPS)
22-bit noise-free resolution (5 SPS)
INL: 2.5 ppm of FSR
50 Hz and 60 Hz rejection: 85 dB with 50 ms settling time
User-configurable input channels
2 fully differential or 4 pseudo-differential
Crosspoint multiplexer
2.5V on-chip reference (2 ppm/°C drift)
For more features, please refer to the data sheet
Microchip Centennial Electronic Technology (Shenzhen) Co., Ltd
Address: Shenzhen Futian District Huaqiang Road Huaqiang Plaza A Block 13H
Tel: 0755-83591082
Fax: 0755-83591083
Q Q：1051085817
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