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低功耗、串行、14位DAC,电压输出

性能最佳的14位DAC,上电干扰最小,具有1 LSB INL

产品详情

主要特征

Parametric specs for Precision DACs (< 1MHz)
Resolution (bits) 14
# Channels 1
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 2
4
Supply Range (V) (min) 2.7
Supply Range (V) (max) 3.6
ICC (mA) (max) 0.4
Settling Time (µs) (typ) 18
Package/Pins QSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
5.96
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参量

Parametric specs for Precision DACs (&lt; 1MHz)
Resolution (bits) 14
# Channels 1
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Ext.
INL (±LSB) (max) 2
4
Supply Range (V) (min) 2.7
Supply Range (V) (max) 3.6
ICC (mA) (max) 0.4
Settling Time (µs) (typ) 18
Package/Pins QSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
5.96

主要特征

  • ±1 LSB INL
  • 1µA Shutdown Current
  • "Glitch Free" Output Voltage at Power-Up
  • Single-Supply Operation
    • +5V (MAX5170)
    • +3V (MAX5172)
  • Full-Scale Output Range
    • +2.048V (MAX5172, VREF = +1.25V)
    • +4.096V (MAX5170, VREF = +2.5V )
  • Rail-to-Rail Output Amplifier
  • Adjustable Output Offset
  • Low THD (-80dB) in Multiplying Operation
  • SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial Interface
  • Programmable Shutdown Mode and Power-Up Reset (0 or Midscale)
  • Buffered Output Capable of Driving 5kΩ || 100pF Loads
  • User-Programmable Digital Output Pin Allows Serial Control of External Components
  • Pin-Compatible Upgrade to the 12-Bit MAX5174/MAX5176

应用/用途

  • µP控制系统
  • 自动测试设备(ATE)
  • 数字增益与失调调节
  • 工业过程控制
  • 运动控制
  • 远端工业控制

描述

The MAX5170/MAX5172 low-power, serial, voltage-output, 14-bit digital-to-analog converters (DACs) feature a precision output amplifier in a space-saving 16-pin QSOP package. The MAX5170 operates from a +5V single supply and the MAX5172 operates from a +3V single supply. Both devices draw only 280µA of supply current, which reduces to 1µA in shutdown. In addition, the programmable power-up reset feature allows for a user-selectable power-up output voltage of either 0 or midscale.

The 3-wire serial interface is compatible with SPI™, QSPI™, and MICROWIRE™ standards. An input register followed by a DAC register provides a double-buffered input, allowing the input and DAC registers to be updated independently or simultaneously with a 16-bit serial word. Additional features include software and hardware shutdown, shutdown lockout, a hardware clear pin, and a reference input capable of accepting DC and offset AC signals. These devices provide a programmable digital output pin for added functionality and a serial-data output pin for daisy-chaining. All logic inputs are TTL/CMOS-compatible and are internally buffered with Schmitt triggers to allow direct interfacing to optocouplers.

The MAX5170/MAX5172 incorporate a proprietary on-chip circuit that keeps the output voltage virtually "glitch free," limiting the glitches to a few millivolts during power-up. Both devices are available in 16-pin QSOP packages and are specified for the extended (-40°C to +85°C) temperature range. For 100% pin-compatible Dacs with internal reference, see the 13-bit MAX5130/MAX5131 and the 12-bit MAX5120/MAX5121 data sheets.

简化框图

MAX5170、MAX5172:功能原理框图 MAX5170、MAX5172:功能原理框图 Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心