MAX1257BETM+T

Description
The MAX1220/MAX1257/MAX1258 integrate a 12-bit, multichannel, analog-to-digital converter (ADC), and a 12- bit, octal, digital-to-analog converter (DAC) in a single IC.
These devices also include a temperature sensor and configurable general-purpose I/O ports (GPIOs) with a 25MHz SPI-/QSPI™-/MICROWIRE®-compatible serial interface.
The ADC is available in 8 and 16 input-channel versions.
The octal DAC outputs settle within 2.0µs and the ADC has a 225ksps conversion rate.
Features
♦12-Bit, 225ksps ADC Analog Multiplexer with True-Differential Track/Hold (T/H) 16 Single-Ended Channels or 8 Differential Channels (Unipolar or Bipolar) (MAX1257/MAX1258) Eight Single-Ended Channels or Four Differential Channels (Unipolar or Bipolar) (MAX1220) Excellent Accuracy: ±0.5 LSB INL, ±0.5 LSB DNL
♦12-Bit, Octal, 2µs Settling DAC Ultra-Low Glitch Energy (4nV
•s) Power-Up Options from Zero Scale or Full Scale Excellent Accuracy: ±0.5 LSB INL
♦Internal Reference or External Single-Ended/Differential Reference Internal Reference Voltage 2.5V or 4.096V
♦Internal ±1°C Accurate Temperature Sensor
♦On-Chip FIFO Capable of Storing 16 ADC Conversion Results and One Temperature Result
♦On-Chip Channel-Scan Mode and Internal Data-Averaging
Features
♦Analog Single-Supply Operation +2.7V to +3.6V or +4.75V to +5.25V
♦Digital Supply: +2.7V to AVDD
♦25MHz, SPI/QSPI/MICROWIRE Serial Interface
♦AutoShutdown Between Conversions
♦Low-Power ADC 2.5mA at 225ksps 22µA at 1ksps 0.2µA at Shutdown
♦Low-Power DAC: 1.5mA
♦Evaluation Kit Available (Order MAX1258EVKIT)GeneralApplications Controls for Optical Components Base-Station Control Loops System Supervision and Control Data-Acquisition Systems