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AD9888KSZ-140

更新时间： 2024-02-16 06:20:19

品牌	Logo	应用领域
亚德诺 - ADI		消费电路商用集成电路
页数	文件大小	规格书
36页	501K
描述
100 MSPS/140 MSPS/170 MSPS Analog Flat Panel Interface

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技术参数
数据手册
替代型号

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AD9888KSZ-140 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFP
包装说明：	FQFP,	针数：	128
Reach Compliance Code：	unknown	风险等级：	5.07
Is Samacsys：	N	商用集成电路类型：	CONSUMER CIRCUIT
JESD-30 代码：	R-PQFP-G128	JESD-609代码：	e3
长度：	20 mm	湿度敏感等级：	3
功能数量：	1	端子数量：	128
最高工作温度：	70 °C	最低工作温度：
封装主体材料：	PLASTIC/EPOXY	封装代码：	FQFP
封装形状：	RECTANGULAR	封装形式：	FLATPACK, FINE PITCH
峰值回流温度（摄氏度）：	260	认证状态：	COMMERCIAL
座面最大高度：	3.4 mm	最大供电电压 (Vsup)：	3.6 V
最小供电电压 (Vsup)：	3 V	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子面层：	MATTE TIN	端子形式：	GULL WING
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	40	宽度：	14 mm
Base Number Matches：	1

AD9888KSZ-140 数据手册

Data Sheet

AD9888

HSYNC pulses are present. Because HSYNC pulses are relatively

short in width, the counter only reaches a value of N before the

pulse ends. It then starts counting down, eventually reaching 0

before the next HSYNC pulse arrives. The specific value of N varies

among video modes, but is always less than 255. For example, with

a 1 μs width HSYNC, the counter reaches only 5 (1 μs/200 ns = 5).

When VSYNC is present on the composite sync, the counter

also counts up. However, because the VSYNC signal is much

longer, the counter reaches a higher number, M. For most video

modes, M is at least 255. Therefore, VSYNC can be detected on

the composite sync signal by detecting when the counter counts

to higher than N. The specific count that triggers detection (T)

can be programmed through the serial register (Address 0x0F).

SYNC SLICER

The purpose of the sync slicer is to extract the sync signal from

the green graphics channel. A sync signal is not present on all

graphics signals, only those with sync-on-green. The sync signal

is extracted from the green channel in a two-step process. First,

the SOG input is clamped to its negative peak (typically 0.3 V

below the black level). Next, the signal goes to a comparator

with a variable trigger level, nominally 0.15 V above the clamped

level. The “sliced” sync is typically a composite sync signal

containing both HSYNC and VSYNC.

SYNC SEPARATOR

A sync separator extracts the VSYNC signal from a composite sync

signal by using a low-pass filter-like or integrator-like operation.

It works on the idea that the VSYNC signal stays active for a much

longer time than the HSYNC signal. Therefore, the sync separator

rejects any signal shorter than a threshold value, which is some-

where between an HSYNC pulse width and a VSYNC pulse width.

After VSYNC is detected, there is a similar process to detect when

it becomes inactive. Upon detection, the counter first resets to 0,

and then starts counting up when VSYNC disappears. Similar to

the previous case, the sync separator detects the absence of VSYNC

when the counter reaches the threshold count (T). In this way,

the sync separator rejects noise and/or serration pulses. After

VSYNC is detected to be absent, the counter resets to 0 and begins

the cycle again.

The sync separator on the AD9888 is an 8-bit digital counter

with a 5 MHz clock. It works independently of the polarity of

the composite sync signal. Polarities are determined elsewhere

on the chip. The basic idea is that the counter counts up when

Rev. C | Page 33 of 36

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中文翻译

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AD9888KSZ-140 替代型号

型号	品牌	替代类型	描述	数据表
AD9888KS-140	ADI	完全替代	100/140/170/205 MSPS Analog Flat Panel Interface

与AD9888KSZ-140相关器件

型号	品牌	获取价格	描述	数据表
AD9888KSZ-170	ADI	获取价格	100 MSPS/140 MSPS/170 MSPS Analog Flat Panel Interface
AD9888KSZ-170	ROCHESTER	获取价格	SPECIALTY CONSUMER CIRCUIT, PQFP128, PLASTIC, MQFP-128
AD9888KSZ-205	ADI	获取价格	IC SPECIALTY CONSUMER CIRCUIT, PQFP128, PLASTIC, MQFP-128, Consumer IC:Other
AD9889	ADI	获取价格	HIGH PERFORMANCE HDMI-TM / DVI TRANSMITTER
AD9889A	ADI	获取价格	High Performance HDMI/DVI Transmitter
AD9889ABBCZ-80	ADI	获取价格	High Performance HDMI/DVI Transmitter
AD9889ABBCZ-80	ROCHESTER	获取价格	SPECIALTY CONSUMER CIRCUIT, PBGA76, 6 X 6 MM, 1.40 MM HEIGHT, LEAD FREE, MO-225, BGA-76
AD9889ABBCZRL-80	ADI	获取价格	High Performance HDMI/DVI Transmitter
AD9889B	ADI	获取价格	High Performance HDMI/DVI Transmitter
AD9889B/PCB	ADI	获取价格	High Performance HDMI/DVI Transmitter

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