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Ryan  curran Embedded world 2017 Ryan  curran Embedded world 2017

Ryan curran Embedded world 2017 - PowerPoint Presentation

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Ryan curran Embedded world 2017 - PPT Presentation

Nuremberg Germany March 2017 Simplifying Precision Measurement with ADIs Latest SAR ADC Product Families 1 2017 Analog Devices Inc All rights reserved This Sessions Objective Introduce the ADAQ7980 data acquisition subsystem ID: 729603

devices bit 2017 analog bit devices analog 2017 adc rights reserved sar csp msop data adaq7980 amp performance driver 2msps 1msps signal

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Slide1

Ryan curranEmbedded world 2017Nuremberg, GermanyMarch 2017

Simplifying Precision Measurement with ADI’s Latest SAR ADC Product Families

1

©2017 Analog Devices, Inc. All rights reserved. Slide2

This Sessions ObjectiveIntroduce the ADAQ7980 data acquisition subsystem

SiP (System-in-Package) product familyHow the idea came about

Discuss features & benefitsLearn about how this helps the signal chain designer

AD4000:

Next Generation of Industry Leading 16/18/20-Bit Precision

SAR ADC FamilyEase of use featuresSystem level benefitsAD4020: ADI’s 1st 20-bit, 2MSPS SAR ADCConclusions & Questions

2

Analog Devices Confidential InformationSlide3

ADAQ7980 ADAQ798816-bit SAR ADC-BASED INTEGRATED DATA Acquisition subsystems

©2017 Analog Devices, Inc. All rights reserved.

3Slide4

Common Block Across Varying Applications

REF

Supply +

Supply -

Digital

Host

Sensor

Sensor

Signal

Conditioning

Signal

Conditioning

M

U

X

ADC

Driver

ADC LDO

RC

Filter

Ref

Buf

Bypass

ADAQ7980

4

©2017 Analog Devices, Inc. All rights reserved.

Out-of-Box Performance

More of signal chain covered by data sheet performance

Benefit: Reduced TTM, Lower development cost

5x4

mm footprint 

Balance between integration & Flexibility

Benefit: Smaller form factor without comprising performanceSlide5

SiP Project Motivation

Poorly Designed Reference Circuit

SAR makes incorrect

bit decision

due

to poor design

Common

causes

Layout and size of reservoir cap

Insufficient drive strength/high output impedance

Noise of

ref / ref

buffer too

large

Poorly Designed

D

river

C

ircuit

SAR

operation severely degraded due to poor design

Common

causes

Incorrect driver selection / No driver

Incorrect filter bandwidth

Incorrect component choice / component process

We can make these decisions

give our customers a better chance of achieving data sheet performance

Analog Devices Confidential Information

5Slide6

Ease of Use

Flexibility

ADAQ7980 16-Bit, 1MSPS, Data Acquisition Solution

Integrated ADC Driver

High impedance reference buffer and 10uF cap

Integrated RC Filter

Flexible Amp Supplies and Reference Value

Flexible ADC Driver Configuration

LDO with integrated cap for flexible and stable power supply

Flexible Logic Level

Analog Devices Confidential Information

6Slide7

Area Saving Benefits

~50

% area saving in PCB area

vs. a discrete solution

~

160

mm

2

~80

mm

2

AMP

AMP

LDO

ADC

ADAQ7980

Analog Devices Confidential Information

7Slide8

Advanced Assembly

Technology

5 mm × 4 mm

×

2 mm LGA

ADC

LDO

AMP

PassivesSlide9

Performance Results  10 kHz Tone @ 1 MSPS (VREF

= 5V)Discrete Solution vs. Integrated Solution

9

PCB Level Individual Component Solution

ADAQ7980 Integrated Solution

SNR = 91.37 dB

SINAD = 91.09 dB

THD = -103.1 dB

DR = 91.88 dB

SNR = 91.17 dB

SINAD = 90.94 dB

THD = -103.9 dB

DR = 91.64 dB

Analog Devices Confidential InformationSlide10

Models and Pricing

Model

Sample Rate

Book Price

(1k)

ADAQ7988500 ksps$9.75ADAQ7980

1 MSPS$13.25

Available Now

10

©2017 Analog Devices, Inc. All rights reserved. Slide11

AD40XXNext Generation SAR ADC Simplifies Precision Measurement

©2017 Analog Devices, Inc. All rights reserved.

11Slide12

12

Ease of Drive

High-Z

mode

Longer

acquisition phase

Ease-of-Digital Interface

Low

SPI clock rate

R

educe I/O power consumption

Simplify digital

Isolation

Reduced

Sensitivity

to

External

C

ircuitry

Compatible with Larger Selection of Driver Circuits

Optimized Signal Conditioning

Easy to achieve datasheet performance

Reduces design time, debug and risk

Key Benefits

AD40XX

: Next Generation of Industry Leading 16/18/20-Bit Precision SAR ADC Family

©2017 Analog Devices, Inc. All rights reserved.

Pin-For-Pin Compatible with AD798x/769x

AD40XX Power

:

80µW

@

10kSPS, 8mW @ 1MSPSSlide13

AD4020: ADI’s First 20-Bit, 2MSPS Precision SAR Differential ADC

SINAD

100 dB

typ

@ 1 kHz

input, 5V REF

THD

-123 dB typ

@ 1 kHz input

INL

+/-

3.0 ppm max

guaranteed

13

©2017 Analog Devices, Inc. All rights reserved.

Resolution

VREF

VDD

Interface

Input

Package

20

Bits

2.4V to 5.1V

1.8V

SPI

1.8V/2.5V/3V/5V

Differential

±V

REF

10-ld MSOP 3x4.9mm

10-ld LFCSP 3x3mmSlide14

Ease of Drive

Internal Overvoltage Clamp

Efficient Digital Interface

Span Compression

14

AD40XX

: Ease of Use Features

©2017 Analog Devices, Inc. All rights reserved. Slide15

CNV

CONVERSION

ACQ/ TRACK

PHASE

SCK

SDO

ADC INPUT

Traditional SAR

DATA

ADC INPUT HIGH-Z ENABLED

AD4003

CONV

ACQUISITION/ TRACK

DATA

ADC

ADC

DRIVER

VREF

C

DAC

C

DAC

+

_

VREF

+

_

R

R

C

C

C

Ease

of

Drive

©2017 Analog Devices, Inc. All rights reserved. Slide16

AD4003 vs AD7982 Driver Comparison: SNR (Fs = 1MSPS, fin = 1kHz)

16

Analog Devices Confidential Information—Not for External Distribution ©2016 Analog Devices, Inc. All rights reserved.

R (

)

, C(F) and RC Bandwidth(Hz)

Higher performance even with longer settling times

BetterSlide17

AD40XX Family Release Schedule

17

Generic

Description

Resolution,

Speed, Ain input [package]Target Release Timelines(as of March 2017)

Pricing (1K)

AD4000

16-Bit, 2MSPS, SE [MSOP,

CSP]

Released

$14.35

AD4001

16-Bit, 2MSPS, DIFF [MSOP,

CSP]

Released

$15.45

AD4002

18-Bit, 2MSPS, SE [MSOP,

CSP]

July 2017

AD4003

18-Bit, 2MSPS,DIFF [MSOP,

CSP]

Released

$24.95

AD400416-Bit, 1MSPS,SE [MSOP, CSP]April 2017

AD400516-Bit, 1MSPS,DIFF  [MSOP, CSP]April 2017

AD4006

18-Bit, 1MSPS,SE  [MSOP, CSP]October 2017

AD400718-Bit, 1MSPS,DIFF [MSOP, CSP]

July 2017AD4008

16-Bit, 500kSPS,SE [CSP]January 2018AD401018-Bit, 500kSPS,SE [CSP]January 2018AD401118-Bit, 500kSPS,DIFF [CSP]October 2017AD402020-Bit, 2MSPS,DIFF  [MSOP, CSP]April 2017$29.50

©2017 Analog Devices, Inc. All rights reserved. Slide18

ConclusionIntroduced ADAQ7980 data acquisition subsystem

SiP (System-in-Package) family

Provides greater than 50% reduction in PCB area compared with individual component solutionsCircuit performance has NOT been compromised due to SiP

integration

With more of the signal chain covered by

one data sheet, the risk of redesign is reduced ADI offers a full suite of evaluation tools and design resources intended to create an easy customer journey for the ADAQ7980AD400x: Next Generation of Industry Leading Precision SAR ADCs

Pin-for-pin compatible with AD798x/AD769x product familiesFamily includes the AD4020 – ADI’s first 20-bit SAR ADC

Reduces system & signal chain complexity

Improved measurement accuracy in a small footprint

18

©2017 Analog Devices, Inc. All rights reserved. Slide19

70 mm

6

0 mm

Conclusion

Both product families are available for

purchase and you can see them in action at booth 3-311!!!

19

©2017 Analog Devices, Inc. All rights reserved.

ADAQ7980

AD400xSlide20

20

QUESTIONS

©2017 Analog Devices, Inc. All rights reserved.