Datasheet > ADS5421Y/T

ADS5421Y/T

更新时间： 2024-11-28 22:10:43

品牌	Logo	应用领域
BB		转换器
页数	文件大小	规格书
21页	392K
描述
14-Bit, 40MHz Sampling ANALOG-TO-DIGITAL CONVERTER

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ADS5421Y/T 数据手册

ADS5421

SBAS237D – DECEMBER 2001 – REVISED JULY 2004

14-Bit, 40MHz Sampling

ANALOG-TO-DIGITAL CONVERTER

FEATURES

DESCRIPTION

● HIGH DYNAMIC RANGE:

High SFDR: 83dB at 10MHz f_IN

High SNR: 75dB at 10MHz f_IN

The ADS5421 is a high-dynamic range 14-bit, 40MHz,

pipelined Analog-to-Digital Converter (ADC). It includes a

high-bandwidth linear track-and-hold amplifier that gives

excellent spurious performance up to and beyond the Nyquist

rate. The clock input can accept a low-level differential sine

wave or square wave signal down to 0.5Vp-p, further improving

the Signal-to-Noise Ratio (SNR) performance.

● PREMIUM TRACK-AND-HOLD:

Differential Inputs

Selectable Full-Scale Input Range

● LOW POWER: 850mW

● FLEXIBLE CLOCKING:

The ADS5421 has a 4Vp-p differential input range

(2Vp-p • 2 inputs) for optimum Spurious-Free Dynamic

Range (SFDR). The differential operation gives the lowest

even-order harmonic components. A lower input voltage can

also be selected using the internal references, further

optimizing SFDR.

Differential or Single-Ended

Accepts Sine or Square Wave Clocking Down to

0.5Vp-p

Variable Threshold Level

The ADS5421 is available in a small LQFP-64 package.

APPLICATIONS

● COMMUNICATIONS RECEIVERS

● TEST INSTRUMENTATION

● PROFESSIONAL CCD IMAGING

+V_S

CLK

ADS5421

Timing Circuitry

CLK

14-Bit

Pipelined

ADC

1Vp-p

Error

Correction

Logic

3-State

Outputs

•

T&H

D13

Core

(+2.5V)

Reference Ladder

and Driver

Reference and

Mode Select

REFT

V_REFSEL1 SEL2

REFB

OE VDRV

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

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