Maxim Integrated MAX1257BETM

Description
The MAX1220/MAX1257/MAX1258 is a highly integrated system monitoring and control solution that includes:
16-channel (MAX1257/MAX1258) or 8-channel (MAX1220) 12-bit Analog-to-Digital Converter (ADC)
12 12-bit Digital-to-Analog Converters (DACs)
Internal reference
Internal temperature sensor
4-bit (MAX1220) or 12-bit (MAX1257/MAX1258) GPIO port
25MHz SPI-/QSPI-/MICROWIRE compatible serial interface

Features
Reduces parts count and board space with fully integrated system monitor and controller
Monitors 8 (MAX1220) or 16 voltages (MAX1257/MAX1258) using 12-bit, 225ksps ADC
Controls 8 output voltage levels with 12-bit, octal, 2us settling DAC with ultra-low glitch energy (4n x VS)
Measures temperature with internal 1°C accurate temperature sensor
Options for using either internal 2.5V (MAX1257) reference, 4.096V (MAX1220/MAX1258) reference, or external reference
Includes 4 (MAX1220) or 12 (MAX1257/1258) GPIOs
Lowers processor requirements and minimizes power consumption and heat dissipation
On-chip FIFO, channel-scan mode, and data averaging
AutoShutdown between conversions
Low-power ADC: 2.5mA at 225ksps, 22μA at 1ksps
Low-power DAC: 1.5mA
TQFN package with exposed pad
Enables maximum dynamic range with availability of 2 analog power supply options: 2.7V to 3.6V (MAX1257) or 4.75V to 5.25V (MAX1220/MAX1258)

Applications
Controls for optical components
Base-station control loops
System supervision and control
Data-acquisition systems