ADS1174

ADS1174 ADS1178 ADS1174 ADS1178 www.ti.com ........................................................................................................................................ SBAS373B – OCTOBER 2007 – REVISED SEPTEMBER 2008 Quad/Octal, Simultaneous Sampling, 16-Bit Analog-to-Digital Converters FEATURES 1 234 Simultaneously Sample Four/Eight Channels Selectable Operating Modes: High-Speed: 52kSPS Data Rate, 31mW/ch Low-Power: 10kSPS Data Rate, 7mW/ch AC Performance: 25kHz Bandwidth 97dB SNR –105dB THD DC Performance: 2µV/°C Offset Drift 2ppm/°C Gain Drift Digital Filter: Linear Phase Response Passband Ripple: ±0.005dB Stop Band Attenuation: 100dB Selectable SPI™ or Frame Sync Serial Interface Simple Pin-Driven Control Low Sampling Aperture Error Specified from –40°C to +105°C Analog Supply: 5V I/O Supply: 1.8V to 3.3V Digital Core Supply: 1.8V APPLICATIONS 3-Phase Power Monitors Defibrillators and ECG Monitors Coriolis Flow Meters Vibration/Modal Analysis VREFP VREFN AVDD DVDD IOVDD Input1 Input2 Input3 Input4 DS SPI and DS Frame- DS Sync Interface DS Four Digital Filters Control Logic AGND DGND ADS1174 DRDY/FSYNC SCLK DOUT[4:1] DIN TEST[1:0] FORMAT[2:0] CLK SYNC PWDN[4:1] CLKDIV MODE DESCRIPTION The ADS1174 (quad) and ADS1178 (octal) are multiple delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with data rates up to 52k samples-per-second (SPS), which allow synchronous sampling of four and eight channels. These d...