Digital Filter

and

Interface

Oscillator

Voltage

Reference

Temperature

Sensor

Mux

PGA

16-bit

û

ADC

AIN0

AIN1

SCLK

CS

VDD

GND

DOUT/DRDY

DIN

ADS1118-Q1

0.1 F

AIN2

AIN3

3.3 V

3.3 V

3.3 V

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

Reference

Design

ADS1118-Q1

SBAS740A – OCTOBER 2015 – REVISED NOVEMBER 2015

ADS1118-Q1 Automotive, Low-Power, SPI-Compatible, 16-Bit

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

1 Features

3 Description

The ADS1118-Q1 is a precision, low power, 16-bit

1

•

Qualified for Automotive Applications

analog-to-digital converter (ADC) that provides all

•

AEC-Q100 Qualified With the Following Results:

features necessary to measure the most common

–

Temperature Grade 1: –40°C to +125°C

sensor

signals.

The

ADS1118-Q1

integrates

a

programmable

gain

amplifier

(PGA),

voltage

–

HBM ESD Classification 2

reference, oscillator, and high-accuracy temperature

–

CDM ESD Classification C6

sensor. These features, along with a wide power-

•

Wide Supply Range: 2 V to 5.5 V

supply range from 2 V to 5.5 V, make the

ADS1118-Q1 ideally suited for power- and space-

•

Low Current Consumption:

constrained, sensor-measurement applications.

–

Continuous Mode: Only 150

μA

The ADS1118-Q1 performs conversions at data rates

–

Single-Shot Mode: Automatic Power-Down

up to 860 samples per second (SPS). The PGA offers

•

Programmable Data Rate: 8 SPS to 860 SPS

input ranges from ±256 mV to ±6.144 V, allowing

•

Single-Cycle Settling

both large and small signals to be measured with

high resolution. An input multiplexer (mux) allows

•

Internal Low-Drift Voltage Reference

measurement of two differential or four single-ended

•

Internal Temperature Sensor:

inputs. The high-accuracy temperature sensor is used

2°C (Maximum) Error

for system-level temperature monitoring, or cold-

•

Internal Oscillator

junction compensation for thermocouples.

•

Internal PGA

The ADS1118-Q1 operates either in continuous-

•

Four Single-Ended or Two Differential Inputs

conversion mode, or in a single-shot mode that

automatically

powers

down

after

a

conversion.

2 Applications

Single-shot

mode

significantly

reduces

current

consumption during idle periods. Data are transferred

•

Battery Management Systems

through a serial peripheral interface (SPI™). The

•

Automotive Sensors

ADS1118-Q1 is specified from –40°C to +125°C.

–

Thermocouples

Device Information(1)

–

Resistance Temperature Detectors (RTDs)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

–

Pressure and Strain Gauge Sensors

ADS1118-Q1

VSSOP (10)

3.00 mm × 3.00 mm

–

Electrochemical Gas Sensors

(1) For all available packages, see the package option addendum

–

Particulate Matter Sensors

at the end of the data sheet.

K-Type Thermocouple Measurement

Using Integrated Temperature Sensor for Cold-Junction Compensation

1

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.