ADV7123 Analog Devices, ADV7123 Datasheet

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ADV7123

Manufacturer Part Number
ADV7123
Description
330 MHz Triple 10-Bit High Speed Video DAC
Manufacturer
Analog Devices
Datasheet

Specifications of ADV7123

Resolution (bits)
10bit
Dac Update Rate
330MSPS
Dac Settling Time
15ns
Max Pos Supply (v)
+5.25V
Single-supply
Yes
Dac Type
Current Out
Dac Input Format
Par

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FEATURES
330 MSPS throughput rate
Triple 10-bit digital-to-analog converters (DACs)
SFDR
RS-343A-/RS-170-compatible output
Complementary outputs
DAC output current range: 2.0 mA to 26.5 mA
TTL-compatible inputs
Internal reference (1.235 V)
Single-supply 5 V/3.3 V operation
48-lead LQFP package
Low power dissipation (30 mW minimum @ 3 V)
Low power standby mode (6 mW typical @ 3 V)
Industrial temperature range (−40°C to +85°C)
Pb-free (lead-free) package
APPLICATIONS
Digital video systems (1600 × 1200 @ 100 Hz)
High resolution color graphics
Digital radio modulation
Image processing
Instrumentation
Video signal reconstruction
GENERAL DESCRIPTION
The ADV7123 (ADV®) is a triple high speed, digital-to-analog
converter on a single monolithic chip. It consists of three high
speed, 10-bit, video DACs with complementary outputs, a
standard TTL input interface, and a high impedance, analog
output current source.
The ADV7123 has three separate 10-bit-wide input ports. A
single 5 V/3.3 V power supply and clock are all that are required
to make the part functional. The ADV7123 has additional video
control signals, composite SYNC and BLANK .
The ADV7123 also has a power save mode.
ADV is a registered trademark of Analog Devices, Inc.
Rev. D
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 that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
−70 dB at f
−53 dB at f
CLK
CLK
= 50 MHz; f
= 140 MHz; f
OUT
OUT
= 1 MHz
= 40 MHz
Triple 10-Bit High Speed Video DAC
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
The ADV7123 is fabricated in a 5 V CMOS process. Its
monolithic CMOS construction ensures greater functionality
with lower power dissipation. The ADV7123 is available in a
48-lead LQFP package.
PRODUCT HIGHLIGHTS
1.
2.
3.
G9 TO G0
R9 TO R0
B9 TO B0
CLOCK
BLANK
PSAVE
SYNC
330 MSPS throughput.
Guaranteed monotonic to 10 bits.
Compatible with a wide variety of high resolution color
graphics systems, including RS-343A and RS-170.
10
10
10
FUNCTIONAL BLOCK DIAGRAM
POWER-DOWN
REGISTER
REGISTER
REGISTER
V
GND
AA
MODE
DATA
DATA
DATA
©2010 Analog Devices, Inc. All rights reserved.
R
10
10
10
Figure 1.
SET
CMOS, 330 MHz
COMP
DAC
DAC
DAC
REFERENCE
VOLTAGE
CIRCUIT
SYNC LOGIC
BLANK AND
ADV7123
ADV7123
www.analog.com
IOR
IOR
IOG
IOG
IOB
IOB
V
REF

Related parts for ADV7123

ADV7123 Summary of contents

Page 1

... REGISTER POWER-DOWN PSAVE MODE CLOCK GND R The ADV7123 is fabricated CMOS process. Its monolithic CMOS construction ensures greater functionality with lower power dissipation. The ADV7123 is available in a 48-lead LQFP package. PRODUCT HIGHLIGHTS 1. 330 MSPS throughput. 2. Guaranteed monotonic to 10 bits. ...

Page 2

... ADV7123 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... Specifications ......................................................................... 3 3.3 V Specifications ...................................................................... Dynamic Specifications ........................................................ 5 3.3 V Dynamic Specifications ..................................................... Timing Specifications ........................................................... 7 3.3 V Timing Specifications ........................................................ 8 Absolute Maximum Ratings ............................................................ 9 ESD Caution .................................................................................. 9 Pin Configuration and Function Descriptions ........................... 10 Typical Performance Characteristics ...

Page 3

... Green DAC, SYNC = high RGB DAC, SYNC = low OUT Tested with DAC output = 0 V FSR = 17. MHz CLK f = 140 MHz CLK f = 240 MHz CLK R = 560 Ω SET R = 4933 Ω SET PSAVE = low, digital, and control inputs ADV7123 DD ...

Page 4

... ADV7123 3.3 V SPECIFICATIONS 1.235 REF SET Table 2. 2 Parameter STATIC PERFORMANCE Resolution (Each DAC) Integral Nonlinearity (BSL) Differential Nonlinearity DIGITAL AND CONTROL INPUTS Input High Voltage Input Low Voltage Input Current PSAVE Pull-Up Current Input Capacitance, C ...

Page 5

... ADV7123 Unit dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc dBc ...

Page 6

... These maximum/minimum specifications are guaranteed by characterization over the 4. 5.25 V range. 2 Note that the ADV7123 exhibits high performance when operating with an internal voltage reference DAC-to-DAC crosstalk is measured by holding one DAC high while the other two are making low-to-high and high-to-low transitions. ...

Page 7

... These maximum/minimum specifications are guaranteed by characterization over the 3 3.6 V range. 2 Note that the ADV7123 exhibits high performance when operating with an internal voltage reference DAC-to-DAC crosstalk is measured by holding one DAC high while the other two are making low-to-high and high-to-low transitions. ...

Page 8

... ADV7123 3.3 V TIMING SPECIFICATIONS 3 3 1.235 REF SET Table 6. 3 Parameter ANALOG OUTPUTS Analog Output Delay 4 Analog Output Rise/Fall Time 5 Analog Output Transition Time 6 Analog Output Skew CLOCK CONTROL 7 CLOCK Frequency Data and Control Setup Data and Control Hold ...

Page 9

... This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational + 0 section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ESD CAUTION AA Rev Page ADV7123 ...

Page 10

... ADV7123 G5 6 TOP VIEW G6 7 (Not to Scale BLANK 11 SYNC Figure 3. Pin Configuration pins on the ADV7123 must be connected Rev Page REF 35 COMP 34 IOR 33 IOR 32 IOG 31 IOG ...

Page 11

... The equation for IOG is the same as that for IOR and IOB when SYNC is not being used, that is, SYNC tied permanently low. 38 PSAVE Power Save Control Pin. Reduced power consumption is available on the ADV7123 when this pin is active. ) connected between this pin and GND controls the magnitude of the full-scale video signal. SET = 530 Ω. The relationship between R ...

Page 12

... ADV7123 TYPICAL PERFORMANCE CHARACTERISTICS 5 V TYPICAL PERFORMANCE CHARACTERISTICS 1.235 17.62 mA, 50 Ω doubly terminated load, differential output loading REF OUT 70 SFDR (DE) 60 SFDR (SE 0.1 1 2.51 5.04 f (MHz) OUT Figure 4. SFDR vs 140 MHz (Single-Ended and Differential) OUT ...

Page 13

... START Figure 11. Single-Tone SFDR @ f = 140 MHz (f CLK –5 –45 –85 70MHz 0kHz STOP START = 2 MHz) Figure 12. Dual-Tone SFDR @ f OUT 70MHz STOP = 20 MHz) OUT Rev Page ADV7123 35MHz 70MHz STOP = 140 MHz (f = 13.5 MHz 14.5 MHz) CLK OUT1 OUT2 ...

Page 14

... ADV7123 3 V TYPICAL PERFORMANCE CHARACTERISTICS 1.235 17.62 mA, 50 Ω doubly terminated load, differential output loading REF OUT 70 60 SFDR (DE) SFDR (SE 1.0 2.51 5.04 20.2 f (MHz) OUT Figure 13. SFDR vs 140 MHz (Single-Ended and Differential) OUT CLK 80 SFDR (DE) ...

Page 15

... START Figure 20. Single-Tone SFDR @ f = 140 MHz (f CLK –5 –45 –85 70MHz 0kHz STOP START = 2 MHz) Figure 21. Dual-Tone SFDR @ f OUT 70MHz STOP = 20 MHz) OUT Rev Page ADV7123 35MHz 70MHz STOP = 140 MHz (f = 13.5 MHz 14.5 MHz) CLK OUT1 OUT2 ...

Page 16

... ADV7123 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 that shuts off the picture tube, resulting in the blackest possible picture. ...

Page 17

... All these digital inputs are specified to accept TTL logic levels. CLOCK INPUT The CLOCK input of the ADV7123 is typically the pixel clock rate of the system also known as the dot rate. The dot rate, and thus the required CLOCK frequency, is determined by the on-screen resolution, according to the following equation: Dot Rate = (Horiz Res) × ...

Page 18

... REF SET IOR, IOB (mA) = 7989.6 × V (V)/R REF Equation 1 applies to the ADV7123 only, when SYNC is being used. If SYNC is not being encoded onto the green channel, Equation 1 is similar to Equation 2. Using a variable value of R allows for accurate adjustment of SET the analog output video levels. Use of a fixed 560 Ω R yields the analog output levels quoted in the Specifications section ...

Page 19

... PCB. Alternatively, consideration can be given to using a 3- terminal voltage regulator. DIGITAL SIGNAL INTERCONNECT Isolate the digital signal lines to the ADV7123 as much as possible from the analog outputs and other analog circuitry. Digital signal lines should not overlay the analog power plane. Due to the high clock rates used, long clock lines to the ADV7123 should be avoided to minimize noise pickup ...

Page 20

... For optimum performance, the analog outputs should each have a source termination resistance to ground of 75 Ω (doubly terminated 75 Ω configuration). This termination resistance should be as close as possible to the ADV7123 to minimize reflections. Additional information on PCB design is available in the AN-333 Application Note, Design and Layout of a Video Graphics System for Reduced EMI, which is available from Analog Devices at www ...

Page 21

... ADV7123KSTZ140 −40°C to +85°C ADV7123KST140-RL −40°C to +85°C ADV7123JSTZ240 0°C to 70°C ADV7123JSTZ240-RL 0°C to 70°C ADV7123JSTZ330 0°C to 70° RoHS Compliant Part. 2 ADV7123JSTZ330 is available in a 3.3 V version only. 9.20 9.00 SQ 0.75 1.60 0.60 8.80 MAX 0. PIN 1 TOP VIEW 0.20 (PINS DOWN) 0.09 7° ...

Page 22

... ADV7123 NOTES Rev Page ...

Page 23

... NOTES Rev Page ADV7123 ...

Page 24

... ADV7123 NOTES ©2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00215-0-7/10(D) Rev Page ...

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