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ZADCS146 Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers |
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2 / 26 page ZADCS146/147 12-Bit, 200ksps, ADC Family © 2011 Zentrum Mikroelektronik Dresden AG — Rev. 2.0 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is PRELIMINARY and subject to changes without notice. Brief Description The ZMDI ZADCS146 and ZADCS147 are 12-Bit low power analog-to-digital (A/D) converters with up to 250ksps conversion rate. The converter is based on successive-approximation-register architecture. All converters have an 8-channel input multiplexer and a high-bandwidth a track/hold circuit. All analog inputs are software configurable as eight / four/two single ended or four/two/one differential analog input channels as well as for unipolar or bipolar output coding. The ZADCS146 and ZADCS147 operate from a single +2.7V to +5.25V supply. The synchronous four wire serial interface connects directly to a microcontroller using one of the standards like SPI™, QSPI™, and Microwire™ without external components. The ZADCS146 and ZADCS147 use either the external serial-interface clock or an internally generated clock to perform successive- approximation analog-to-digital conversions. The internal clock mode can be used to run synchronous conversions on several ZMDI ADCs in parallel. The ZADCS 146 is equipped with a high accurate internal 2.5V reference with an additional external ±1.5% voltage adjustment range. The device provides a hard-wired shut-down pin (nSHDN) and software-selectable power-down modes to automatically shut down the IC at the end of a conversion. Accessing the serial interface automatically powers up the ZADCS146 and ZADCS147. A quick turn-on time allows the device to be shut down between measurements. Features 12-Bit resolution SAR ADC 8 channel single or 4 channel diff. inputs Software configurable uni- or bipolar output code SPI™/QSPI™, Microwire™ compatible serial interface No missing codes Low power consumption Internal 2.5V reference (only ZADCS146) Software programmable power down mode Single-Supply Operation +2.5V to +5.25V Benefits Accurate measurements Long battery life cycles due to low power consumption Available Support ZADCS146 Kit - Evaluation Kit for ZADCS146 and ZADCS147 based on ZADCS146 device - Standalone and PC based operation modus - USB 2.0 (1.1) compatible - User Interface for PC operated modus - Graphical oscilloscope appl. and FFT analyzer Physical Characteristics ADC resolution............................ 12 Bit Conversion rate........................... 200 ksps Power supply rate ....................... 2.7V to 5.25V INL............................................... ±1.0 LSB max. DNL............................................. ±1.0 LSB max. SINAD ......................................... >70 dB Standby (idle) current.................. <0.5 µA Current consumption @ 200 ksps, 3V supply - with internal reference .............. < 1.2 mA - without internal reference ......... < 0.9 mA 85°C 20-Pin SSOP package Temperature range ..................... -25°C to + |
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