ADC12662

OBSOLETE ADC12662 www.ti.com SNAS092C – JUNE 2004 – REVISED APRIL 2013 ADC12662 12-Bit, 1.5 MHz, 200 mW A/D Converter with Input Multiplexer and Sample/Hold Check for Samples: ADC12662 FEATURES 1 2 Built-In Sample-and-Hold Single +5V Supply Single Channel or 2 Channel Multiplexer Operation Low Power Standby Mode APPLICATIONS Digital Signal Processor Front Ends Instrumentation Disk Drives Mobile Telecommunications Waveform Digitizers KEY SPECIFICATIONS Sampling rate: 1.5 MHz (min) Conversion time: 580 ns (typ) Signal-to-Noise Ratio, fIN= 100 kHz: 67.5 dB (min) Power consumption (fs= 1.5 MHz): 200 mW (max) No missing codes over temperature: Ensured DESCRIPTION Using an innovative multistep conversion technique, the 12-bit ADC12662 CMOS analog-to-digital converter digitizes signals at a 1.5 MHz sampling rate while consuming a maximum of only 200 mW on a single +5V supply. The ADC12662 performs a 12-bit conversion in three lower-resolution “flash” conversions, yielding a fast A/D without the cost and power dissipation associated with true flash approaches. The analog input voltage to the ADC12662 is tracked and held by an internal sampling circuit, allowing high frequency input signals to be accurately digitized without the need for an external sample-and-hold circuit. The ADC12662 features two sample-andhold/flash comparator sections which allow the converter to acquire one sample while converting the previous. This pipelining technique increases...