资 源 简 介
The MAX114/MAX118 are microprocessor-compaTIble,8-bit, 4-channel and 8-channel analog-to-digital converters(ADCs). They operate from a single +5V supplyand use a half-flash technique to achieve a 660ns conversionTIme (1Msps). A power-down (PWRDN) pinreduces current consumpTIon typically to 1μA. Thedevices return from power-down mode to normal operaTIngmode in less than 200ns, allowing large supplycurrentreductions in burst-mode applications (in burstmode, the ADC wakes up from a low-power state atspecified intervals to sample the analog input signals).Both converters include a track/hold, enabling the ADCto digitize fast analog signals.Microprocessor (μP) interfaces are simplified because theADC can appear as a memory location or I/O port withoutexternal interface logic. The data outputs use latched,three-state buffer circuitry for direct connection to an 8-bitparallel μP data bus or system input port. TheMAX114/MAX118 input/reference configuration enablesratiometric operation.The 4-channel MAX114 is available in a 24-pin DIP orSSOP. The 8-channel MAX118 is available in a 28-pinDIP or SSOP. For +3V applications, refer to theMAX113/MAX117 data sheet.
