參數(shù)資料
型號(hào)： AD9888KSZ-140
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 1/36頁(yè)
文件大小： 0K
描述： IC FLAT PANEL INTERFACE 128-MQFP
標(biāo)準(zhǔn)包裝： 1
應(yīng)用： 圖形卡，VGA 接口
接口： 2 線(xiàn)串口
電源電壓： 3 V ~ 3.6 V
封裝/外殼： 128-BFQFP
供應(yīng)商設(shè)備封裝： 128-MQFP（14x20）
包裝： 托盤(pán)
安裝類(lèi)型： 表面貼裝
100 MSPS/140 MSPS/170 MSPS
Analog Flat Panel Interface
Data Sheet
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2001–2011 Analog Devices, Inc. All rights reserved.
FEATURES
170 MSPS maximum conversion rate
500 MHz programmable analog bandwidth
0.5 V to 1.0 V analog input range
Less than 450 ps p-p PLL clock jitter at 170 MSPS
3.3 V power supply
Full sync processing
Sync detect for hot plugging
2:1 analog input mux
4:2:2 output format mode
Midscale clamping
Power-down mode
Low power: <1 W typical at 170 MSPS
APPLICATIONS
RGB graphics processing
LCD monitors and projectors
Plasma display panels
Scan converters
Microdisplays
Digital TV
FUNCTIONAL BLOCK DIAGRAM
HSYNC0
VSYNC0
VSYNC1
SOGIN0
SOGIN1
COAST
HSYNC1
SERIAL REGISTER
AND
POWER MANAGEMENT
DATACK
HSOUT
VSOUT
SOGOUT
AD9888
SYNC
PROCESSING
AND CLOCK
GENERATION
CLAMP
DRA[7:0]
DRB[7:0]
DGA[7:0]
DGB[7:0]
DBA[7:0]
DBB[7:0]
ADC
CLAMP
RAIN1
RAIN0
8
ADC
CLAMP
8
ADC
CLAMP
2:1
MUX
SCL
SDA
A0
8
2
GAIN1
GAIN0
BAIN1
BAIN0
2:1
MUX
2:1
MUX
REF
BYPASS
2:1
MUX
2:1
MUX
2:1
MUX
CKINV
CKEXT
FILT
REF
02
44
2-
0
01
Figure 1.
GENERAL DESCRIPTION
The AD9888 is a complete 8-bit, 170 MSPS, monolithic analog
interface optimized for capturing RGB graphics signals from
personal computers and workstations. Its 170 MSPS encode rate
capability and full-power analog bandwidth of 500 MHz supports
resolutions of up to 1600 × 1200 (UXGA) at 75 Hz.
For ease of design and to minimize cost, the AD9888 is a fully
integrated interface solution for flat panel displays. The AD9888
includes an analog interface that has a 170 MHz triple ADC with
an internal 1.25 V reference phase-locked loop (PLL) to generate a
pixel clock from HSYNC and COAST; midscale clamping; and
programmable gain, offset, and clamp controls. The user provides
only a 3.3 V power supply, analog input, and HSYNC and COAST
signals. Three-state CMOS outputs can be powered from 2.5 V
to 3.3 V.
The on-chip PLL of the AD9888 generates a pixel clock from the
HSYNC and COAST inputs. Pixel clock output frequencies
range from 10 MHz to 170 MHz. PLL clock jitter is typically
less than 450 ps p-p at 170 MSPS. When the COAST signal is
presented, the PLL maintains its output frequency in the absence of
HSYNC. A sampling phase adjustment is provided. Data, HSYNC,
and clock output phase relationships are maintained. The PLL
can be disabled, and an external clock input can be provided as
the pixel clock. The AD9888 also offers full sync processing for
composite sync and sync-on-green applications.
A CLAMP signal is generated internally or can be provided by the
user through the CLAMP input pin. This device is fully program-
mable via a 2-wire serial port.
Fabricated in an advanced CMOS process, the AD9888 is
provided in a space-saving, 128-lead, MQFP, surface-mount,
plastic package and is specified over the 0°C to 70°C temperature
range. The AD9888 is also available in a Pb-free package.
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