HT7123A Datasheet | HTCSEMI

FEATURES 330 MSPS throughput rate Triple 10-bit digital-to-analog converters (DACs) SFDR - 70 d B at f CLK = 50 MHz; f OUT = 1 MHz - 53 d B at f CLK = 140 MHz; f OUT = 40 MHz RS-343A-/RS-170-patible output plementary outputs DAC output current range: 2.0 m A to 26.5 m A TTL-patible inputs Internal reference (1.235 V) Single-supply 5 V/3.3 V operation 48-lead LQFP package Low power dissipation (30 m W minimum @ 3 V) Low power standby mode (6 m W 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 HT7123A (ADV®) is a triple high speed, digital-toanalog converter on a single monolithic chip. It consists of three high speed, 10-bit, video DACs with plementary outputs, a standard TTL input interface, and a high impedance, analog output current source. The HT7123A 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 HT7123A has additional video control signals, posite SYNC and BLANK. The HT7123A also has a power save mode. FUNCTIONAL BLOCK DIAGRAM BLANK SYNC BLANK AND SYNC LOGIC DAT A R9 T O R0 10 REGISTER 10 DAC DAT A G9 TO G0 10 REGISTER 10 DAC B9 TO B0 DAT A 10 REGISTER 10 DAC PSAVE CLOCK POWER-DOWN MODE VOLTAG E REF ERENCE CIR C UIT RSET CO MP Figure 1. The HT7123A is fabricated in a 5 V CMOS process. Its monolithic CMOS construction ensures greater functionality with lower power dissipation. The HT7123A is available in a 48-lead LQFP...