THS0842

THS0842 DUAL-INPUT, 8-BIT, 40 MSPS LOW-POWER ANALOG-TO-DIGITAL CONVERTER WITH SINGLE OR DUAL PARALLEL BUS OUTPUT SLAS246A – DECEMBER 1999 – REVISED AUGUST 2000 features D Dual Simultaneous Sample and Hold Inputs D Differential or Single-Ended Analog Inputs D 8-Bit Resolution 40 MSPS Sampling Analog-to-Digital Converter (ADC) D Single or Dual Parallel Bus Output D Low Power Consumption: 275 mW Typ Using External References D Wide Analog Input Bandwidth: 600 MHz Typ D 3.3 V Single-Supply Operation D 3.3 V TTL /CMOS-Compatible Digital I/O D Internal or External Bottom and Top Reference Voltages D Adjustable Reference Input Range D Power-Down (Standby) Mode D 48-Pin Thin Quad Flat Pack (TQFP) Package applications D Digital Communications (Baseband Sampling) D Cable Modems D Set Top Boxes D Test Instruments DRVDD NC NC DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 DRVSS PFB PACKAGE (TOP VIEW) AVSS Q– Q+ PWDN_REF CML REFT REFB BG AVSS AVDD COUT C OUT AVDD I+ I– AVSS AVDD STBY DVSS SELB DVDD AVSS CLK OE 36 35 34 33 32 31 30 29 28 27 26 25 37 24 38 23 39 22 40 21 41 20 42 19 43 18 44 17 45 16 46 15 47 14 48 13 1 2 3 4 5 6 7 8 9 10 11 12 DRVSS DA0 DA1 DA2 DA3 DA4 DA5 DA6 DA7 NC NC DRVDD description The THS0842 is a dual 8-bit 40 MSPS high-speed A/D converter. It alternately converts each analog input signal into 8-bit binary-coded digital words up to a maximum sampling rate of 40 MSPS with an 80 MHz clock. All digital inputs and outputs are 3.3 V TTL /CMOS-compatibl...