Maxim Integrated MAX117EAI

Description
The MAX113/MAX117 are 8-bit analog-to-digital converters (ADCs) with 4 or 8 channels, respectively. They operate from a single 3V supply and use a half-flash technique to achieve a 1.8us 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 supply-current reductions in burst-mode applications. Both converters include a track/hold, enabling the ADC to digitize fast analog signals. Microprocessor (UP) 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 μP data bus or system input port. The MAX113/MAX117 input/reference configuration enables ratiometric operation.

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: 1.8us per Channel
No External Clock Required
Internal Track/Hold
Ratiometric Reference Inputs
Internally Connected 8th Channel Monitors Reference Voltage (MAX117)

Applications
Battery-Powered Systems
System-Health Monitoring
Communications Systems
Portable Equipment
Remote Data Acquisition