ML2258

May 1997 ML2258* µP Compatible 8-Bit A/D Converter with 8-Channel Multiplexer GENERAL DESCRIPTION The ML2258 combines an 8-bit A/D converter, 8-channel analog multiplexer, and a microprocessor compatible 8bit parallel interface and control logic in a single monolithic device. Easy interface to microprocessors is provided by the latched and decoded multiplexer address inputs and latched three-state outputs. The device is suitable for a wide range of applications from process and machine control to consumer, automotive, and telecommunication applications. The ML2258 is an enhanced, pin-compatible, second source for the industry standard ADC0808/ADC0809. The ML2258 enhancements are faster conversion time, true sample and hold function, superior power supply rejection, wider reference range, and a double buffered data bus as well as faster digital timing. All parameters are guaranteed over temperature with a power supply voltage of 5V ±10%. FEATURES s s s s s s s s s s s s s s Conversion time 6.6µs Total unadjusted error ±1/2LSB or ±1LSB No missing codes Sample and hold 390ns acquisition Capable of digitizing a 5V, 50kHz sine wave 8-input multiplexer 0V to 5V analog input range with single 5V power supply Operates ratiometrically or with up to 5V voltage reference No zero-or full-scale adjust required Analog input protection 25mA per input min Low power dissipation 3mA max TTL and CMOS compatible digital inputs and outputs Standard 28-pin DIP or surface mount PCC Superior pin ...