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ADS8578S Arkusz danych(PDF) 1 Page - Texas Instruments |
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ADS8578S Arkusz danych(HTML) 1 Page - Texas Instruments |
1 / 58 page AIN_1P AIN_1GND AIN_2P AIN_2GND AIN_7P AIN_7GND AIN_8P AIN_8GND 14-Bit SAR ADC 2.5 VREF REFGND AGND DVDD AVDD ADS8578S ADC Driver REFIN/REFOUT REFCAPB REFSEL Digital Filter OS2 OS0 OS1 SAR Logic and Digital Control DB[15:0] DOUTA DOUTB PAR/SER RANGE RD/SCLK CS RESET CONVSTA, CONVSTB FRSTDATA STBY REFCAPA BUSY 1 M: Clamp 1 M: 3rd-Order LPF Clamp PGA ADC Driver 1 M: Clamp 1 M: 3rd-Order LPF Clamp PGA ADC Driver 1 M: Clamp 1 M: 3rd-Order LPF Clamp PGA ADC Driver 1 M: Clamp 1 M: 3rd-Order LPF Clamp PGA 14-Bit SAR ADC 14-Bit SAR ADC 14-Bit SAR ADC SER/PAR Interface Copyright © 2017, Texas Instruments Incorporated Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. ADS8578S SBAS825 – APRIL 2017 ADS8578S 14-Bit, High-Speed, 8-Channel, Simultaneous-Sampling ADC with Bipolar Inputs on a Single Supply 1 1 Features 1 • 14-Bit ADC With Integrated Analog Front-End • Simultaneous Sampling: 8 Channels • Pin-Programmable Bipolar Inputs: ±10 V and ±5 V • High Input Impedance: 1 MΩ • 5-V Analog Supply: 2.3-V to 5-V Digital Supply • Overvoltage Input Clamp With 7-kV ESD • Low-Drift, On-Chip Reference (2.5 V) and Buffer • Excellent Performance: – 200-kSPS Max Throughput per Channels – DNL: ±0.2 LSB; INL: ±0.2 LSB – SNR: 85.8 dB; THD: −109 dB • Overtemperature Performance: – Max Offset Drift: 3 ppm/°C – Gain Drift: 6 ppm/°C • On-Chip Digital Filter for Oversampling • Flexible Parallel, Byte, and Serial Interface • Temperature Range: –40°C to +125°C • Package: 64-Pin LQFP 2 Applications • Monitoring and Control for Power Grids • Protection Relays • Multiphase Motor Controls • Industrial Automation and Controls • Multichannel Data Acquisition Systems 3 Description The ADS8578S device is an 8-channel, integrated data acquisition (DAQ) system based on a 14-bit successive approximation (SAR) analog-to-digital converter (ADC). All input channels are simultaneously sampled to achieve a maximum throughput of 200 kSPS per channel. The device features a complete analog front-end for each channel, including a programmable gain amplifier (PGA) with high input impedance of 1 MΩ, input clamp, low-pass filter, and an ADC input driver. The device also features a low-drift, precision reference with a buffer to drive the ADC. A flexible digital interface supporting serial, parallel, and parallel byte communication enables the device to be used with a variety of host controllers. The ADS8578S can be configured to accept ±10-V or ±5-V true bipolar inputs using a single 5-V supply. The high input impedance allows direct connection with sensors and transformers, thus eliminating the need for external driver circuits. The high performance and accuracy, along with zero-latency conversions offered by this device, also make the ADS8578S a great choice for many industrial automation and control applications. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) ADS8578S LQFP (64) 10.00 mm × 10.00 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. |
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