adv7121kn80 Analog Devices, Inc., adv7121kn80 Datasheet

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adv7121kn80

Manufacturer Part Number
adv7121kn80
Description
Cmos 80 Mhz, Triple 10-bit Video Dacs
Manufacturer
Analog Devices, Inc.
Datasheet
a
ADV is a registered trademark of Analog Devices, Inc.
*Speed grades up to 140 MHz are also available on special request.
REV. B
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
GENERAL DESCRIPTION
The ADV7121/ADV7122 (ADV
analog converter on a single monolithic chip. The part is specifi-
cally designed for high resolution color graphics and video
systems including high definition television (HDTV). It is also
ideal for any application requiring a low cost, high speed DAC
function especially in communications. It consists of three, high
speed, 10-bit, video D/A converters (RGB), a standard TTL input
interface and high impedance, analog output, current sources.
The ADV7121/ADV7122 has three separate, 10-bit, pixel input
ports, one each for red, green and blue video data. A single +5 V
power supply, an external 1.23 V reference and pixel clock input is
all that is required to make the part operational. The ADV7122
has additional video control signals, composite SYNC and BLANK.
The ADV7121/ADV7122 is capable of generating RGB video
output signals which are compatible with RS-343A, RS-170 and
most proposed production system HDTV video standards, in-
cluding SMPTE 240M.
The ADV7121/ADV7122 is fabricated in a +5 V CMOS pro-
cess. Its monolithic CMOS construction ensures greater func-
tionality with low power dissipation. The ADV7121 is packaged
in a 0.6", 40-pin plastic DIP package. The ADV7122 is pack-
Please contact Analog Devices or its representatives for details.
FEATURES
80 MHz Pipelined Operation
Triple 10-Bit D/A Converters
RS-343A/RS-170 Compatible Outputs
TTL Compatible Inputs
+5 V CMOS Monolithic Construction
40-Pin DIP Package (ADV7121)
44-Pin PLCC Package (ADV7122)
48-Lead TQFP (ADV7122)
APPLICATIONS
High Definition Television (HDTV)
High Resolution Color Graphics
CAE/CAD/CAM Applications
Image Processing
Instrumentation
Video Signal Reconstruction
Direct Digital Synthesis (DDS)
I/Q Modulation
SPEED GRADES
80 MHz
50 MHz
30 MHz
®
) is a video speed, digital-to-
80 MHz, Triple 10-Bit Video DACs
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
aged in a 44-pin plastic leaded (J-lead) chip carrier, PLCC,
and 48-lead thin quad flatpack (TQFP).
PRODUCT HIGHLIGHTS
1. Fast video refresh rate, 80 MHz.
2. Guaranteed monotonic to 10 bits. Ten bits of resolution al-
3. Compatible with a wide variety of high resolution color
INPUT
PIXEL
PORT
INPUT
PIXEL
PORT
lows for implementation of linearization functions such as
gamma correction and contrast enhancement.
graphics systems including RS-343A/RS-170 and the pro-
posed SMPTE 240M standard for HDTV.
CLOCK
BLANK
CLOCK
SYNC
ADV7121 FUNCTIONAL BLOCK DIAGRAM
ADV7122 FUNCTIONAL BLOCK DIAGRAM
R0
R9
G0
G9
B0
B9
G0
G9
R0
R9
B0
B9
GND
V
V
AA
AA
ADV7122
GND
ADV7121/ADV7122
ADV7121
10
10
10
10
10
10
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
REGISTER
CONTROL
ADJUST
ADJUST
GREEN
GREEN
BLUE
BLUE
RED
RED
FS
FS
V
V
REF
10
10
10
10
10
10
© Analog Devices, Inc., 1996
REF
CONTROL
REFERENCE
AMPLIFIER
REFERENCE
AMPLIFIER
SYNC
DAC
DAC
DAC
DAC
DAC
DAC
Fax: 617/326-8703
CMOS
IOR
IOG
IOB
IOR
IOG
IOB
COMP
COMP

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adv7121kn80 Summary of contents

Page 1

... The ADV7121 is packaged in a 0.6", 40-pin plastic DIP package. The ADV7122 is pack- ADV is a registered trademark of Analog Devices, Inc. *Speed grades up to 140 MHz are also available on special request. Please contact Analog Devices or its representatives for details. ...

Page 2

ADV7121–SPECIFICATIONS Parameter STATIC PERFORMANCE Resolution (Each DAC) Accuracy (Each DAC) Integral Nonlinearity, INL Differential Nonlinearity, DNL Gray Scale Error Coding DIGITAL INPUTS Input High Voltage, V INH Input Low Voltage, V INL Input Current Input Capacitance, C ...

Page 3

ADV7122–SPECIFICATIONS Parameter K Version STATIC PERFORMANCE Resolution (Each DAC) 10 Accuracy (Each DAC) Integral Nonlinearity, INL Differential Nonlinearity, DNL Gray Scale Error Coding DIGITAL INPUTS Input High Voltage INH Input Low Voltage, V 0.8 INL Input Current, I ...

Page 4

ADV7121/ADV7122 TIMING CHARACTERISTICS Parameter 80 MHz Version fmax 12 NOTES 1 TTL input values ...

Page 5

... Model Speed ADV7121KN80 80 MHz ADV7121KN50 50 MHz ADV7121KN30 30 MHz ADV7122KP80 80 MHz ADV7122KP50 50 MHz ADV7122KP30 30 MHz ADV7122KST50 50 MHz ADV7122KST30 30 MHz *Industrial Temperature range (– +85 C) parts are also available to special ranges. Please contact your local Analog Devices representative ...

Page 6

ADV7121/ADV7122 Pin Mnemonic Function BLANK* Composite blank control input (TTL compatible). A logic zero on this control input drives the analog outputs, IOR, IOB and IOG, to the blanking level. The BLANK signal is latched on the rising edge of ...

Page 7

TERMINOLOGY Blanking Level The level separating the SYNC portion from the video portion of the waveform. Usually referred to as the front porch or back porch IRE units the level which will shut off the pic- ...

Page 8

ADV7121/ADV7122 If we, therefore, have a graphics system with a 1024 resolution, a noninterlaced 60 Hz refresh rate and a retrace fac- tor of 0.8, then: Dot Rate = 1024 1024 60/0.8 = 78.6 MHz RED, BLUE GREEN mA V ...

Page 9

Video Synchronization & Control The ADV7122 has a single composite sync (SYNC) input con- trol. Many graphics processors and CRT controllers have the ability of generating horizontal sync (HSYNC), vertical sync (VSYNC) and composite SYNC graphics system which ...

Page 10

ADV7121/ADV7122 More detailed information regarding load terminations for vari- ous output configurations, including RS-343A and RS-170, is available in an Application Note entitled “Video Formats & Required Load Terminations” available from Analog Devices, publication no. E1228–15–1/89. Figure 3 shows the ...

Page 11

R0 R9 VIDEO G0 DATA INPUTS ADV7121/ADV7122 CLOCK VIDEO CONTROL SYNC* INPUTS BLANK* COMPONENT C1 C2 C3, C4, C5, C6 L1, L2 R1, R2 SET Z1 Figure 8. ADV7121/ADV7122 Typical Connection Diagram and Component List ...

Page 12

ADV7121/ADV7122 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 44-Terminal Plastic Leaded Chip Carrier (P-44A) 40-Pin Plastic DIP (N-40A) –12– REV. B ...

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