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+3V/+5V、12位、串行、电压输出DAC,内置电压基准

业内首款10ppm/°C、内置基准、12位DAC

产品详情

主要特征

应用/用途

Parametric specs for Precision DACs (< 1MHz)
Resolution (bits) 12
# Channels 1
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Int.
INL (±LSB) (max) 1
2
Supply Range (V) (min) 2.7
Supply Range (V) (max) 3.6
ICC (mA) (max) 0.6
Settling Time (µs) (typ) 20
Package/Pins QSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
6.15
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参量

Parametric specs for Precision DACs (&lt; 1MHz)
Resolution (bits) 12
# Channels 1
Interface Serial - SPI
Output Type Voltage- Buffered
Reference Int.
INL (±LSB) (max) 1
2
Supply Range (V) (min) 2.7
Supply Range (V) (max) 3.6
ICC (mA) (max) 0.6
Settling Time (µs) (typ) 20
Package/Pins QSOP/16
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
6.15

主要特征

  • Single-Supply Operation
    • +5V (MAX5120)
    • +3V (MAX5121)
  • Full-Scale Output Range
    • +4.095V (MAX5120)
    • +2.0475V (MAX5121)
  • Built-In 10ppm/°C (max) Precision Bandgap Reference
    • +2.5V (MAX5120)
    • +1.25V (MAX5121)
  • Adjustable Output Offset
  • SPI/QSPI/Microwire-Compatible, 3-Wire Serial Interface
  • Pin-Programmable Shutdown Mode and Power-Up Reset (0V or Midscale Output Voltage)
  • Buffered Output Capable of Driving 5kΩ ||100pF or 4-20mA Loads
  • Space-Saving 16-Pin QSOP Package
  • Pin-Compatible 13-Bit Upgrades Available (MAX5130/MAX5131)
  • Pin-Compatible 14-Bit Upgrades Available (MAX5170/MAX5172)

应用/用途

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

描述

The MAX5120/MAX5121 are low-power, 12-bit, voltage-output digital-to-analog converters (DACs) with an internal precision bandgap reference and an output amplifier. The MAX5120 operates on a +5V supply with an internal amplifier reference of +2.5V and is capable of a +4.095V full-scale output range. The MAX5121, operating on +3V, delivers its +2.0475V full-scale output with an internal precision reference of +1.25V. If necessary, the user can override the internal, < 10ppm/°C voltage reference with an external reference. Both devices draw only 500µA of supply current, which reduces to 3µA in power-down mode. In addition, their power-up reset feature allows for a user-selectable initial output state of either 0V or midscale and minimizes output voltage glitches during power-up.

The serial interface is compatible with SPI™, QSPI™ and MICROWIRE™, which makes the MAX5120/MAX5121 suitable for cascading multiple devices. Each DAC has a double-buffered input organized as an input register followed by a DAC register. A 16-bit shift register loads data into the input register. The DAC register may be updated independently or simultaneously with the input register.

Both devices are available in a 16-pin QSOP package and are specified for the extended industrial (-40°C to +85°C) temperature range. For pin-compatible 14-bit upgrades, see the MAX5170/MAX5172 data sheet; for pin-compatible 13-bit versions, see the MAX5130/MAX5131 data sheet.

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MAX5120、MAX5121:功能原理框图 MAX5120、MAX5121:功能原理框图 Zoom icon

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