MAX1258BETM集成電路（IC）的ADC/DAC-特殊用途規(guī)格書PDF中文資料

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)General

Applications

Controls for Optical Components

Base-Station Control Loops

System Supervision and Control

Data-Acquisition Systems