ISL2671286IBZ-T7A Intersil, ISL2671286IBZ-T7A Datasheet

ISL2671286IBZ-T7A

Manufacturer Part Number

ISL2671286IBZ-T7A

Description

Analog to Digital Converters - ADC 12 BIT SNG ENDED 20K HZ SAR ADC 8LD

Manufacturer

Intersil

Datasheet

1.ISL2671286IBZ-T7A.pdf (15 pages)

Specifications of ISL2671286IBZ-T7A

Rohs

yes

Number Of Channels

Architecture

SAR

Conversion Rate

20 KSPs

Resolution

12 bit

Input Type

Differential

Interface Type

SPI

Operating Supply Voltage

4.5 V to 5.25 V

Maximum Operating Temperature

+ 85 C

Mounting Style

SMD/SMT

Package / Case

SOIC-8

Maximum Power Dissipation

1.4 mW

Number Of Converters

Voltage Reference

1.25 V to 5 V

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12-Bit, 20kSPS SAR ADC

ISL2671286

The ISL2671286 is a sampling SAR-type ADC which features

excellent linearity over supply and temperature variations, and

provides a drop-in compatible alternative to all ADS1286

performance grades. The robust high impedance input

minimizes errors due to leakage currents, and specified

measurement accuracy is maintained with input signals up to

the supply rails.

The reference accepts inputs between 1.25V to 5.0V, providing

design flexibility in a wide variety of applications. The

ISL2671286 also features up to 8kV Human Body Model ESD

survivability.

The serial digital interface is SPI compatible and is easily

interfaced to all popular FPGAs and microcontrollers.

Operating from a 5V supply, power dissipation is 1.4mW at a

sampling rate of 20kSPS and just 15µW between conversions

utilizing the Auto Power-Down mode. These features make the

ISL2671286 an excellent solution for remote industrial

sensors and battery-powered instruments.

The ISL2671286 is available in an 8 Ld SOIC package and is

specified for operation over the industrial temperature range

of –40°C to +85°C.

November 1, 2011

FN7863.0

+IN

–IN

VREF

FIGURE 1. BLOCK DIAGRAM

+VCC

GND

LOGIC

SAR

INTERFACE

SERIAL

DCLOCK

DOUT

CS/SHDN

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

Features

• Drop-In Compatible with ADS1286 (All Performance Grades)

• Simple SPI-compatible Serial Digital Interface

• Guaranteed No Missing Codes

• 20kHz Sampling Rate

• +4.50V to +5.25V Supply

• Low 280µA Operating Current (20kSPS)

• Power-down Current between Conversions: 3µA

• Excellent Differential Non-Linearity (0.75LSB Max)

• Low THD: -83dB (Typ)

• Pb-Free (RoHS Compliant)

• Available in SOIC Package

Applications

• Remote Data Acquisition

• Battery Operated Systems

• Industrial Process Control

• Energy Measurement

• Data Acquisition Systems

• Pressure Sensors

• Flow Controllers

-1

-2

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All other trademarks mentioned are the property of their respective owners.

FIGURE 2. DIFFERENTIAL LINEARITY ERROR vs CODE

512

1024

1536

CODE

2048

2560

3072

3584

4096

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