AD9218BSTZ105 Analog Devices, AD9218BSTZ105 Datasheet

AD9218BSTZ105

Manufacturer Part Number

AD9218BSTZ105

Description

QFP

Manufacturer

Analog Devices

Datasheet

1.AD9218BST105.pdf (28 pages)

Specifications of AD9218BSTZ105

Date_code

09+

Current page: 1 of 28
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FEATURES

Dual 10-bit, 40 MSPS, 65 MSPS, 80 MSPS, and 105 MSPS ADC

Low power: 275 mW at 105 MSPS per channel

On-chip reference and track-and-hold

300 MHz analog bandwidth each channel

SNR = 57 dB @ 41 MHz, Encode = 80 MSPS

1 V p-p or 2 V p-p analog input range each channel

3.0 V single-supply operation (2.7 V to 3.6 V)

Power-down mode for single-channel operation

Twos complement or offset binary output mode

Output data alignment mode

Pin compatible with 8-bit AD9288

–75 dBc crosstalk between channels

APPLICATIONS

Battery-powered instruments

Hand-held scopemeters

Low cost digital oscilloscopes

I and Q communications

Ultrasound equipment

GENERAL DESCRIPTION

The AD9218 is a dual 10-bit monolithic sampling analog-to-

digital converter with on-chip track-and-hold circuits. The

product is low cost, uses low power, is small and is easy to use.

The AD9218 operates at a 105 MSPS conversion rate with

outstanding dynamic performance over its full operating

range. Each channel can be operated independently.

The ADC requires only a single 3.0 V (2.7 V to 3.6 V) power

supply and a clock for full operation. No external reference or

driver components are required for many applications. The

digital outputs are TTL/CMOS compatible and a separate

output power supply pin supports interfacing with 3.3 V or

2.5 V logic.

The clock input is TTL/CMOS compatible and the 10-bit digital

outputs can be operated from 3.0 V (2.5 V to 3.6 V) supplies.

User-selectable options offer a combination of power-down

modes, digital data formats, and digital data timing schemes.

In power-down mode, the digital outputs are driven to a high

impedance state.

Rev. B

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 that may result from its use.

Specifications subject to change without notice. No license is granted by implication or

otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

PRODUCT HIGHLIGHTS

ENCODE A

ENCODE B

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

Tel: 781.329.4700

Fax: 781.326.8703

REF

Low power.

Just 275 mW power dissipation per channel at 105 MSPS.

Other speed grades proportionally scaled down while

maintaining high ac performance.

Pin compatibility upgrade.

Allows easy migration from 8-bit to 10-bit devices. Pin

compatible with the 8-bit AD9288 dual ADC.

Easy to use.

On-chip reference and user controls provide flexibility in

system design.

High performance.

Maintains 54 dB SNR at 105 MSPS with a Nyquist input.

Channel crosstalk.

Very low at –75 dBc.

Fabricated on an advanced CMOS process.

Available in a 48-lead low profile quad flat package

(7 mm × 7 mm LQFP) specified over the industrial

temperature range (–40°C to +85°C).

OUT

10-Bit, 40/65/80/105 MSPS

FUNCTIONAL BLOCK DIAGRAM

TIMING

3 V Dual A/D Converter

T/H

ADC

REF

Figure 1.

AD9218

OUTPUT

GND

www.analog.com

AD9218

USER

SELECT NO. 1

USER

SELECT NO. 2

DATA

FORMAT/

GAIN

–D0

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