ZADCS0882_11 Datasheet, PDF (2/27 Pages) List of Unclassifed Manufacturers – 8-Bit, 300ksps, ADC Family

ZADCS0882/0842/0822
8-Bit, 300ksps, ADC Family
Brief Description
The ZMDI ZADCS0882/ZADCS0842/ZADCS0822
are 8-Bit low power analog-to-digital (A/D)
converters with up to 300ksps 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 ZADCS0882/ ZADCS0842/ ZADCS0822
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 ZADCS0882/ZADCS0842/ZADCS0822 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 “V” versions ZADCS0882V/ZADCS0842V/
ZADCS0822V are 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 ZADCS0882/
ZADCS0842/ZADCS0822. A quick turn-on time
allows the device to be shut down between
measurements.
Features
 8-Bit resolution SAR ADC
 2/4/8 channel single or 1/2/4 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 “V” version -
ZADCS0882V/ ZADCS0842V/ZADCS0822V)
 Software programmable power down mode
 Single-Supply Operation +2.5V to +5.25V
Benefits
 Scalable system solutions possible due to
upward/downward compatibility within the family
( 8, 10, 12 bit resolution, 2, 4, 8 channels)
 Accurate measurements
 Long battery life cycles due to low power
consumption
 Synchronous sampling with several ZADCS
parts in parallel
Available Support
 ZADCS1282 Kit
- Evaluation Kit for ZMDI ZADCS08x2 Family
based on ZADCS1282 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............................ 8 Bit
 Conversion rate........................... 300 ksps
 Power supply rate ....................... 2.7V to 5.25V
 INL............................................... ±0.25 LSB max.
 DNL ............................................. ±0.25 LSB max.
 SINAD ......................................... >49 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
 Temperature range ..................... -25°C to +85°C
 14 / 16 / 20-Pin SSOP package
© 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.