MC44251

更新时间： 2024-11-14 22:46:23

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		/
页数	文件大小	规格书
18页	276K
描述
Triple 8-Bit Video ADC Three-State Outputs

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数据手册

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MC44251 数据手册

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by MC44251/D

SEMICONDUCTOR TECHNICAL DATA

Advance Information

FN SUFFIX

44–LEAD PLCC

CASE 777

CMOS

The MC44251 contains three independent parallel analog–to–digital flash

converters (ADC). Each ADC consists of 256 latching comparators and an

encoder. Video may be ac or dc coupled. With ac coupling, input clamping

provides for internal dc restoration. The MC44251 also contains a dithering

generator for video processing performance enhancements.

The MC44251 is especially suitable as a front–end converter in TV–picture

digital processing (picture–in–picture, frame storage, etc.). The high speed

conversion rate of the ADC is suitable for video bandwidth of well over 6 MHz.

FU SUFFIX

44–LEAD QFP

CASE 824A

ORDERING INFORMATION

•

18 MHz Maximum Sampling Rate

Three–State Output Buffers

Output Latching Minimizes Skew

Input Clamps Suitable for RGB and YUV Applications

Built–In Dither Generator with Subsequent Digital Correction

Single 5–Volt Power Supply

Operating Temperature Range: – 40 to + 85°C

VTN and HZ Input Threshold Hysteresis Built–In

MC44251FN

MC44251FU

PLCC

QFP

NOTE:

The FN package is not

recommended for new designs.

It is scheduled for phase out

in late 1996.

SIMPLIFIED BLOCK DIAGRAM OF ONE OF THE ADCs

DD(R)

TOP

LATCH

DATA

OUTPUTS

MID

BOT

CLOCK

bias

ANALOG INPUT

CLAMP

DITHERING

GENERATOR

VTN

MODE

This document contains information on a new product. Specifications and information herein are subject to change without notice.

REV 4

7/96

Motorola, Inc. 1996

MOTOROLA

MC44251

12 3 4 5 6 7...18

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与MC44251相关器件

型号	品牌	获取价格	描述	数据表
MC44251FN	MOTOROLA	获取价格	Triple 8-Bit Video ADC Three-State Outputs
MC44251FU	MOTOROLA	获取价格	Triple 8-Bit Video ADC Three-State Outputs
MC4430	FREESCALE	获取价格	N-Channel 30-V (D-S) MOSFET Fast switching speed
MC44301DW	MOTOROLA	获取价格	Consumer Circuit, Bipolar, PDSO28, PLASTIC, SO-28
MC44301P	MOTOROLA	获取价格	Consumer Circuit, Bipolar, PDIP24, PLASTIC, DIP-24
MC44302ADW	MOTOROLA	获取价格	ADVANCED MULTI-STANDARD VIDEO/SOUND IF
MC44302AP	MOTOROLA	获取价格	ADVANCED MULTI-STANDARD VIDEO/SOUND IF
MC44302DW	MOTOROLA	获取价格	AUDIO/VIDEO DEMODULATOR, PDSO28, PLASTIC, SO-28
MC44302P	MOTOROLA	获取价格	AUDIO/VIDEO DEMODULATOR, PDIP28, PLASTIC, DIP-28
MC4433	FREESCALE	获取价格	P-Channel 30-V (D-S) MOSFET Fast switching speed