ML2264

May 1997 ML2264* 4-Channel High-Speed 8-Bit A/D Converter with T/H (S/H) GENERAL DESCRIPTION The ML2264 is a high-speed, µP compatible, 4-channel 8-bit A/D converter with a conversion time of 680ns over the operating temperature range and supply voltage tolerance. The ML2264 operates from a single 5V supply and has an analog input range from GND to VCC. The ML2264 has two different pin selectable modes. The T/H mode has an internal track and hold. The S/H mode has a true internal sample and hold and can digitize 0 to 5V sinusoidal signals as high as 500kHz. The ML2264 digital interface has been designed so that the device appears as a memory location or I/O port to a µP. Analog input channels are selected by the latched and decoded multiplexer address inputs. The ML2264 is an enhanced, pin compatible second source for the industry standard AD7824. The ML2264 enhancements are faster conversion time, parameters guaranteed over the supply tolerance and temperature range, improved digital interface timing, superior power supply rejection, and better latchup immunity on analog inputs. FEATURES s s s s s s s s s s s s s s Conversion time, WR-RD mode over temperature and supply voltage tolerance Track & Hold Mode ................................. 830ns max Sample & Hold Mode .............................. 700ns max Total unadjusted error ..................... ±1/2 LSB or ±1 LSB Capable of digitizing a 5V, 250kHz sine wave 4-analog input channels No missing codes 0V to 5V analog ...