ZADCS0882/0842/0822

8-Bit, 300ksps, 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.

ns possible due to

downward compatibility within the family

power

t



ZADCS1282 Kit

or ZMDI ZADCS08x2 Family

S1282 device



ADC resolution............................ 8 Bit

............ 300 ksps

o 5.25V

max.

.

ply





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 solutio

upward/

( 8, 10, 12 bit resolution, 2, 4, 8 channels)



Accurate measurements



Long battery life cycles due to low

consumption



Synchronous sampling with several ZADCS

parts in parallel

Available Suppor

- Evaluation Kit f

based on ZADC

- Standalone and PC based operation modus

- USB 2.0 (1.1) compatible

- User Interface for PC operated modus

l. and FFT analyzer

- Graphical oscilloscope app

Physical Characteristics



Conversion rate...............



Power supply rate ....................... 2.7V t



INL............................................... ±0.25 LSB



DNL............................................. ±0.25 LSB max



SINAD ......................................... >49 dB



Standby (idle) current.................. <0.5 µA



Current consumption @ 200 ksps, 3V sup

- with internal reference .............. < 1.2 mA

- without internal reference ......... < 0.9 mA

85°C

Temperature range ..................... -25°C to +

14 / 16 / 20-Pin SSOP package