AD9483KS140 Analog Devices, AD9483KS140 Datasheet

AD9483KS140

Manufacturer Part Number

AD9483KS140

Description

QFP-100

Manufacturer

Analog Devices

Datasheet

1.AD9483KS140.pdf (28 pages)

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GENERAL DESCRIPTION

The AD9483 is a triple 8-bit monolithic analog-to-digital

converter optimized for digitizing RGB graphics signals from

personal computers and workstations. Its 140 MSPS encode

rate capability and full-power analog bandwidth of 330 MHz

supports display resolutions of up to 1280 × 1024 at 75 Hz with

sufficient input bandwidth to accurately acquire and digitize

each pixel.

To minimize system cost and power dissipation, the AD9483

includes an internal 2.5 V reference and track-and-hold circuit.

The user provides only a 5 V power supply and an encode clock.

No external reference or driver components are required for

many applications. The digital outputs are three-state CMOS

outputs. Separate output power supply pins support interfacing

with 3.3 V or 5 V logic.

The AD9483’s encode input interfaces directly to TTL, CMOS,

or positive ECL logic and will operate with single-ended or

differential inputs. The user may select dual channel or single

channel digital outputs. The Dual Channel (demultiplexed)

REV. C

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. 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.

FEATURES

140 MSPS Guaranteed Conversion Rate

100 MSPS Low Cost Version Available

330 MHz Analog Bandwidth

1 V p-p Analog Input Range

Internal 2.5 V Reference

Differential or Single-Ended Clock Input

3.3 V/5.0 V Three-State CMOS Outputs

Single or Demultiplexed Output Ports

Data Clock Output Provided

Low Power: 1.0 W Typical

5 V Converter Power Supply

APPLICATIONS

RGB Graphics Processing

High Resolution Video

LCD Monitors and Projectors

Micromirror Projectors

Plasma Display Panels

Scan Converters

mode interleaves ADC data through two 8-bit channels at one-

half the clock rate. Operation in Dual Channel mode reduces

the speed and cost of external digital interfaces while allowing

the ADCs to be clocked to the full 140 MSPS conversion rate.

In the Single Channel mode, all data is piped at the full clock

rate to the Channel A outputs and the ADCs conversion rate is

limited to 100 MSPS. A data clock output is provided at the

Channel A output data rate for both Dual Channel or Single

Channel output modes.

Fabricated in an advanced BiCMOS process, the AD9483 is

provided in a space-saving 100-lead MQFP surface-mount

plastic package (S-100) and is specified over the 0°C to 85°C

temperature range.

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

Tel: 781/329-4700

Fax: 781/326-8703

ENCODE

G AIN

R AIN

B AIN

FUNCTIONAL BLOCK DIAGRAM

VREF

2.5V

OUT

TIMING

Triple 8-Bit, 140 MSPS

RVREF

T/H

GVREF

AD9483

QUANTIZER

BVREF

A/D Converter

CONTROL

AD9483

GND

www.analog.com

CLKOUT

OMS

I/P

7-0

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