SPI

Interface

Oscillator

Voltage

Reference

High Accuracy

Temp Sensor

MUX

PGA

12-Bit DS

ADC

GND

VDD

500 W

500 W

0.1 F

m

1 F

m

0.1 F

m

GND

1 MW

1 MW

GND

VDD

500 W

500 W

1 F

m

0.1 F

m

GND

1 MW

GND

VDD

0.1 F

m

0.1 F

m

GND

AIN0

AIN1

AIN2

AIN3

SCLK

CS

VDD

GND

DOUT/DRDY

DIN

Device

1 MW

GND

GND

ADS1018

www.ti.com

SBAS526B – NOVEMBER 2012 – REVISED OCTOBER 2013

Ultra-Small, Low-Power, SPI™-Compatible, 12-Bit,

Analog-to-Digital Converter and Temperature Sensor with Internal Reference

Check for Samples: ADS1018

1

FEATURES

DESCRIPTION

The

ADS1018

is

a

precision

analog-to-digital

23

•

Ultra-Small QFN Package:

converter (ADC) with 12 bits of resolution offered in

2 mm × 1,5 mm × 0,4 mm

an ultra-small, leadless QFN-10 package or an

•

Wide Supply Range: 2.0 V to 5.5 V

MSOP-10 package. The ADS1018 is designed with

•

Low Current Consumption:

precision, power, and ease of implementation in

mind. The ADS1018 features an integrated voltage

–

Continuous Mode: Only 150

μA

reference and oscillator. Data are transferred via a

–

Single-Shot Mode: Auto Power-Down

SPI-compatible

serial

interface.

The

ADS1018

•

Programmable Data Rate:

operates from a single power supply ranging from

128 SPS to 3300 SPS

2.0 V to 5.5 V.

•

Single-Cycle Settling

The ADS1018 can perform conversions at rates up to

3300 samples per second (SPS). A programmable

•

Internal Temperature Sensor:

gain amplifier (PGA) is integrated in the ADS1018

1°C (max) Error

that offers input ranges from as low as ±256 mV up to

•

Internal Low-Drift Voltage Reference

the supply rails, allowing both large and small signals

•

Internal Oscillator

to be measured with high resolution. The ADS1018

also features an input multiplexer (MUX) that provides

•

Internal PGA

two differential or four single-ended inputs. The

•

Four Single-Ended or Two Differential Inputs

ADS1018 can also function as a high-accuracy

temperature sensor. This temperature sensor can be

APPLICATIONS

used for system-level temperature monitoring or cold-

junction compensation for thermocouples.

•

Temperature Measurement

•

Portable Instrumentation

The

ADS1018

operates

either

in

continuous

conversion

mode

or

single-shot

mode

that

•

Consumer Goods

automatically powers down after a conversion and

•

Battery Monitoring

greatly reduces current consumption during idle

•

Factory Automation and Process Controls

periods. The ADS1018 is specified from –40°C to

+125°C.

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

SPI is a trademark of Motorola.

3

All other trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.