Maxim Integrated MAX118EPI

Description
The MAX114/MAX118 are microprocessor-compatible, 8-bit, 4-channel and 8-channel analog-to-digital converters (ADCs). They operate from a single 5V supply and use a half-flash technique to achieve a 660ns conversion time (1Msps). A power-down (PWRDN) pin reduces current consumption typically to 1μA. The devices return from power-down mode to normal operating mode in less than 200ns, allowing large supply-current reductions in burst-mode applications (in burst mode, the ADC wakes up from a low-power state at specified intervals to sample the analog input signals). Both converters include a track/hold, enabling the ADC to digitize fast analog signals. Microprocessor (P) interfaces are simplified because the ADC can appear as a memory location or I/O port without external interface logic. The data outputs use latched three-state buffer circuitry for direct connection to an 8-bit parallel uP data bus or system input port. The MAX114/MAX118 input/reference configuration enables ratiometric operation.

Features
4 (MAX114) or 8 (MAX118) Analog Input Channels
Low Power: 40mW (operating mode), 5μW (power-down mode)
Total Unadjusted Error 1LSB
Fast Conversion Time: 660ns per Channel
No External Clock Required
Internal Track Hold
1MHz Full-Power Bandwidth
Internally Connected 8th Channel Monitors Reference Voltage (MAX118)

Applications
High-Speed DSP
Portable Equipment
Remote Data Acquisition
Communications Systems