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ADS1174IPAPT Datasheet(PDF) 1 Page - Texas Instruments |
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ADS1174IPAPT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 35 page BurrBrown Products from Texas Instruments ADS1174 ADS1178 1 FEATURES DESCRIPTION APPLICATIONS VREFP VREFN AVDD DVDD TEST[1:0] FORMAT[2:0] CLK SYNC PWDN[8:1] CLKDIV Control Logic SPI and Frame- Sync Interface IOVDD DGND AGND DRDY/FSYNC SCLK DOUT[8:1] DIN Input2 Input1 Input4 Input3 Input6 Input5 Input8 Input7 DS DS DS DS DS DS DS DS PWDN[4:1] ADS1178 Four Digital Filters AVDD DVDD TEST[1:0] FORMAT[2:0] CLK SYNC CLKDIV Control Logic SPI and Frame- Sync Interface IOVDD DGND AGND DRDY/FSYNC SCLK DOUT[4:1] DIN ADS1174 MODE MODE Eight Digital Filters VREFP VREFN Input2 Input1 Input4 Input3 DS DS DS DS ADS1174 ADS1178 SBAS373 – OCTOBER 2007 Quad/Octal, Simultaneous Sampling, 16-Bit Analog-to-Digital Converters 234 • Synchronously Sample Four/Eight Channels • Selectable Operating Modes: The ADS1174 (quad) and ADS1178 (octal) are multiple delta-sigma ( ΔΣ) analog-to-digital converters High-Speed: 52kSPS Data Rate, 30mW/ch (ADCs) with data rates up to 52k samples-per-second Low-Power: 10kSPS Data Rate, 8mW/ch (SPS), which allow synchronous sampling of four and • AC Performance: eight channels. These devices use identical 25kHz Bandwidth packages, permitting drop-in expandability. 97dB SNR The delta-sigma architecture offers near ideal 16-bit –105dB THD ac performance (97dB SNR, –105dB THD, 1LSB • Digital Filter: linearity) combined with 0.005dB passband ripple, Linear Phase Response and linear phase response. Passband Ripple: ±0.005dB The high-order, chopper- stabilized modulator Stop Band Attenuation: 100dB achieves very low drift (4 μV/ °C offset, 4ppm/°C gain) • Selectable SPI™ or Frame Sync Serial and low noise (1LSBPP). The on-chip finite impulse Interface response (FIR) filter provides a usable signal • Simple Pin-Driven Control bandwidth up to 90% of the Nyquist rate with 100dB of stop band attenuation while suppressing modulator • Low Sampling Aperture Error and signal out-of-band noise. • Specified from –40°C to +105°C Two operating modes allow for optimization of speed • Analog Supply: 5V and power: High-speed mode (32mW/Ch at 52kSPS), • I/O Supply: 1.8V to 3.3V and Low-power mode (8mW/Ch at 10kSPS). • Digital Core Supply: 1.8V A SYNC input control pin allows the device conversions to be started and synchronized to an external event. SPI and Frame-Sync serial interfaces • 3-Phase Power Monitors are supported. The device is fully specified over the extended industrial range (–40 °C to +105°C) and is • Defibrillators and ECG Monitors available in an HTQFP-64 PowerPAD™ package. • Coriolis Flow Meters • Vibration/Modal Analysis 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 PowerPAD is a trademark of Texas Instruments. 3 SPI is a trademark of Motorola, Inc. 4 All other trademarks are the property of their respective owners. PRODUCT PREVIEW information concerns products in the Copyright © 2007, Texas Instruments Incorporated formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. |
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