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General Description

The MAX113/MAX117 are microprocessor-compatible, 8-bit, 4-channel and 8-channel analog-to-digital converters (ADCs). They operate from a single +3V supply and use a half-flash technique to achieve a 1.8μs conversion time (400ksps). A power-down pin (PWRDN) reduces current consumption to 1μA typical. The devices return from power-down mode to normal operating mode in less than 900ns, allowing large supplycurrent 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.

Features

? +3.0V to +3.6V Single-Supply Operation

? 4 (MAX113) or 8 (MAX117) Analog Input Channels

? Low Power: 1.5mA (operating mode)

?????????????????????? 1μA (power-down mode)

? Total Unadjusted Error ≤ 1LSB

? Fast Conversion Time: 1.8μs per Channel

? No External Clock Required

? Internal Track/Hold

? Ratiometric Reference Inputs

? Internally Connected 8th Channel Monitors Reference Voltage (MAX117)

Applications

??? Battery-Powered Systems

??? Portable Equipment

??? System-Health Monitoring

??? Remote Data Acquisition

??? Communications Systems