AD9481 Datasheet

IC型号：
AD9481
PDF描述：
8-Bit, 250 MSPS 3.3 V A/D Converter
文件大小：
1758.78KB
PDF页数：
29页
芯片厂家：
AD

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8-Bit, 250 MSPS

3.3 V A/D Converter

AD9481

FEATURES

DNL = 卤0.35 LSB

INL = 卤0.26 LSB

Single 3.3 V supply operation (3.0 V to 3.6 V)

Power dissipation of 439 mW at 250 MSPS

1 V p-p analog input range

Internal 1.0 V reference

Single-ended or differential analog inputs

De-multiplexed CMOS outputs

Power-down mode

Clock duty cycle stabilizer

FUNCTIONAL BLOCK DIAGRAM

VREF SENSE

AGND DRGND

DRVDD

AVDD

REFERENCE

AD9481

PORT

D7A TO D0A

VIN+

VIN鈥?/div>

DS+

DS鈥?/div>

CLK+

CLK鈥?/div>

T AND H

8-BIT

ADC

PIPELINE

CORE

PORT

D7B TO D0B

CLOCK

MGMT

DCO+

DCO鈥?/div>

LOGIC

05045-001

APPLICATIONS

Digital oscilloscopes

Instrumentation and measurement

Communications

Point-to-point radios

Digital predistortion loops

PDWN

Figure 1.

GENERAL DESCRIPTION

The AD9481 is an 8-bit, monolithic analog-to-digital converter

(ADC) optimized for high speed and low power consumption.

Small in size and easy to use, the product operates at a

250 MSPS conversion rate, with excellent linearity and dynamic

performance over its full operating range.

To minimize system cost and power dissipation, the AD9481

includes an internal reference and track-and-hold circuit. The

user only provides a 3.3 V power supply and a differential

encode clock. No external reference or driver components are

required for many applications.

The digital outputs are TTL/CMOS-compatible with an option

of twos complement or binary output format. The output data

bits are provided in an interleaved fashion along with output

clocks that simplifies data capture.

The AD9481 is available in a Pb-free, 44-lead, surface-mount

package (TQFP-44) specified over the industrial temperature

range (鈭?0掳C to +85掳C).

PRODUCT HIGHLIGHTS

1. Superior linearity. A DNL of 卤0.35 makes the AD9481

suitable for many instrumentation and measurement

applications

2. Power-down mode. A power-down function may be exercised

to bring total consumption down to 15 mW.

3. De-multiplexed CMOS outputs allow for easy interfacing

with low cost FPGAs and standard logic.

Rev. 0

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.

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

Tel: 781.329.4700

www.analog.com

Fax: 781.326.8703

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