AD9220AR Analog Devices, AD9220AR Datasheet

AD9220AR

Manufacturer Part Number

AD9220AR

Description

Manufacturer

Analog Devices

Datasheets

1.AD9220AR.pdf (32 pages)

2.AD9220AR.pdf (28 pages)

Specifications of AD9220AR

Case

SOP

99+

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REV. D

Information furnished by Analog Devices is believed to be accurate and

reliable. However, no responsibility is assumed by Analog Devices for its

use, nor for any infringements of patents or other rights of third parties

which may result from its use. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices.

PRODUCT DESCRIPTION

The AD9221, AD9223, and AD9220 are a generation of high

performance, single supply 12-bit analog-to-digital converters.

Each device exhibits true 12-bit linearity and temperature drift

performance

AD9221/AD9223/AD9220 share the same interface options,

package, and pinout. Thus, the product family provides an

upward or downward component selection path based on per-

formance, sample rate and power. The devices differ with re-

spect to their specified sampling rate and power consumption

which is reflected in their dynamic performance over frequency.

The AD9221/AD9223/AD9220 combine a low cost, high speed

CMOS process and a novel architecture to achieve the resolution

and speed of existing hybrid and monolithic implementations at

a fraction of the power consumption and cost. Each device is a

complete, monolithic ADC with an on-chip, high performance,

low noise sample-and-hold amplifier and programmable voltage

reference. An external reference can also be chosen to suit the dc

accuracy and temperature drift requirements of the application.

The devices use a multistage differential pipelined architecture with

digital output error correction logic to provide 12-bit accuracy at

the specified data rates and to guarantee no missing codes over the

full operating temperature range.

The input of the AD9221/AD9223/AD9220 is highly flexible,

allowing for easy interfacing to imaging, communications, medi-

cal, and data-acquisition systems. A truly differential input

structure allows for both single-ended and differential input

interfaces of varying input spans. The sample-and-hold (SHA)

amplifier is equally suited for both multiplexed systems that

switch full-scale voltage levels in successive channels as well as

sampling single-channel inputs at frequencies up to and beyond

the Nyquist rate. Also, the AD9221/AD9223/AD9220 is well

FEATURES

Monolithic 12-Bit A/D Converter Product Family

Family Members Are: AD9221, AD9223, and AD9220

Flexible Sampling Rates: 1.5 MSPS, 3.0 MSPS and

Low Power Dissipation: 59 mW, 100 mW and 250 mW

Single +5 V Supply

Integral Nonlinearity Error: 0.5 LSB

Differential Nonlinearity Error: 0.3 LSB

Input Referred Noise: 0.09 LSB

Complete: On-Chip Sample-and-Hold Amplifier and

Signal-to-Noise and Distortion Ratio: 70 dB

Spurious-Free Dynamic Range: 86 dB

Out-of-Range Indicator

Straight Binary Output Data

28-Lead SOIC and 28-Lead SSOP

10.0 MSPS

Voltage Reference

as well as 11.5 bit or better ac performance.

The

Complete 12-Bit 1.5/3.0/10.0 MSPS

suited for communication systems employing Direct-IF Down

Conversion since the SHA in the differential input mode can

achieve excellent dynamic performance far beyond its specified

Nyquist frequency.

A single clock input is used to control all internal conversion

cycles. The digital output data is presented in straight binary

output format. An out-of-range (OTR) signal indicates an

overflow condition which can be used with the most significant

bit to determine low or high overflow.

PRODUCT HIGHLIGHTS

The AD9221/AD9223/AD9220 family offers a complete single-

chip sampling 12-bit, analog-to-digital conversion function in

pin-compatible 28-lead SOIC and SSOP packages.

Flexible Sampling Rates—The AD9221, AD9223 and AD9220

offer sampling rates of 1.5 MSPS, 3.0 MSPS and 10.0 MSPS,

respectively.

Low Power and Single Supply—The AD9221, AD9223 and

AD9220 consume only 59 mW, 100 mW and 250 mW, respec-

tively, on a single +5 V power supply.

Excellent DC Performance Over Temperature—The AD9221/

AD9223/AD9220 provide 12-bit linearity and temperature drift

performance.

Excellent AC Performance and Low Noise—The AD9221/

AD9223/AD9220 provides better than 11.3 ENOB performance

and has an input referred noise of 0.09 LSB rms.

Flexible Analog Input Range—The versatile onboard sample-

and-hold (SHA) can be configured for either single ended or differ-

ential inputs of varying input spans.

NOTES

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

Fax: 781/326-8703

SENSE

Excluding internal voltage reference.

Depends on the analog input configuration.

CAPT

CAPB

VREF

VINA

VINB

SHA

SELECT

MODE

AD9221/AD9223/AD9220

Monolithic A/D Converters

FUNCTIONAL BLOCK DIAGRAM

A/D

GAIN = 16

MDAC1

REFCOM

World Wide Web Site: http://www.analog.com

CLK

DIGITAL CORRECTION LOGIC

A/D

OUTPUT BUFFERS

AD9221/AD9223/AD9220

GAIN = 8

MDAC2

AVDD

AVSS

DVSS

DVDD

A/D

GAIN = 4

MDAC3

CML

A/D

OTR

BIT 1

(MSB)

BIT 12

(LSB)

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