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ADV7123_a - a FEATURES 240 MSPS Throughput Rate Triple...

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REV. A 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. a ADV7123 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1998 CMOS, 240 MHz Triple 10-Bit High Speed Video DAC FUNCTIONAL BLOCK DIAGRAM R9–R0 GND R SET IOR IOR COMP ADV7123 V REF VOLTAGE REFERENCE CIRCUIT G9–G0 B9–B0 IOG IOG IOB IOB PSAVE POWER-DOWN MODE BLANK SYNC CLOCK V AA DAC 10 DATA REGISTER 10 DAC 10 DATA REGISTER 10 DAC 10 DATA REGISTER 10 BLANK AND SYNC LOGIC FEATURES 240 MSPS Throughput Rate Triple 10-Bit D/A Converters SFDR –70 dB at f CLK = 50 MHz; f OUT = 1 MHz –53 dB at f CLK = 140 MHz; f OUT = 40 MHz RS-343A/RS-170 Compatible Output Complementary Outputs DAC Output Current Range 2 mA to 26 mA TTL-Compatible Inputs Internal Reference (1.23 V) Single Supply +5 V/+3.3 V Operation 48-Lead LQFP Package Low Power Dissipation (30 mW min @ 3 V) Low Power Standby Mode (6 mW typ @ 3 V) Industrial Temperature Range (–40 8 C to +85 8 C) APPLICATIONS Digital Video Systems (1600 3 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 D/A converters 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 addi- tional video control signals, composite SYNC and BLANK . The ADV7123 also has a power-save mode. 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. 240 MSPS Throughput. 2. Guaranteed monotonic to 10 bits. 3. Compatible with a wide variety of high resolution color graphics systems including RS-343A and RS-170A. ADV is a registered trademark of Analog Devices, Inc.
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–2– REV. A ADV7123–SPECIFICATIONS 5 V SPECIFICATIONS Parameter Min Typ Max Units Test Conditions 1 STATIC PERFORMANCE Resolution (Each DAC) 10 Bits Integral Nonlinearity (BSL) –1 ± 0.4 +1 LSB Differential Nonlinearity –1 ± 0.25 +1 LSB Guaranteed Monotonic DIGITAL AND CONTROL INPUTS Input High Voltage, V IH 2 V Input Low Voltage, V IL 0.8 V Input Current, I IN –1 +1 μ A V IN = 0.0 V or V DD PSAVE Pull-Up Current 20 μ A Input Capacitance, C IN 10 pF ANALOG OUTPUTS Output Current 2.0 26.5 mA Green DAC, Sync = High Output Current 2.0 18.5 mA R/G/B DAC, Sync = Low DAC to DAC Matching 1.0 5 % Output Compliance Range, V OC 0 +1.4 V Output Impedance, R OUT 100 k Output Capacitance, C OUT 10 pF I
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