MAX5122

+5V/+3V、12位、串行、加载/感应DAC,带有10ppm/°C内部电压基准

业内首款10ppm/°C、内置基准、12位DAC


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说明

The MAX5122/MAX5123 low-power, 12-bit, voltage-output, digital-to-analog converters (DACs) feature an internal precision bandgap reference and output amplifier. The MAX5122 operates on a single +5V supply with an internal +2.5V reference, and offers a configurable output amplifier. If necessary, the user can override the on-chip, <10ppm/°C voltage reference with an external reference. The MAX5123 has the same features as the MAX5122 but operates from a single +3V supply and has an internal +1.25V precision reference. The user-accessible inverting input and output of the amplifier allows specific gain configurations, remote sensing, and high output drive capability for a wide range of force/sense applications. 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 reduces output glitches during power-up.

The serial interface is compatible with SPI™, QSPI™, and MICROWIRE™, which makes the MAX5122/MAX5123 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) operating temperature range. For pin-compatible 14-bit upgrades, see the MAX5171/MAX5173 data sheet; for the pin-compatible 13-bit version, see the MAX5132/MAX5133 data sheet.
MAX5122、MAX5123:功能原理框图 MAX5122、MAX5123:功能原理框图 放大+

关键特性

  • Single-Supply Operation
    • +5V (MAX5122)
    • +3V (MAX5123)
  • Built-In 10ppm/°C max Precision Bandgap Reference
    • +2.5V (MAX5122)
    • +1.25V (MAX5123)
  • SPI/QSPI/Microwire-Compatible, 3-Wire Serial Interface
  • Pin-Programmable Shutdown Mode and Power-Up Reset (0 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 (MAX5132/MAX5133)
  • Pin-Compatible 14-Bit Upgrades Available (MAX5171/MAX5173)

应用

  • 自动测试设备(ATE)
  • 数字增益与失调控制
  • 通用产品
  • 工业过程控制
  • 运动控制
Part NumberResolution
(bits)
ChannelsOutput TypeReferenceINL
(±LSB)
InterfaceSupply Range
(V)
Supply Range
(V)
ICC
(mA)
Settling Time
(µs)
Package/PinsOper. Temp.
(°C)
Budgetary
Price
maxminmaxmaxtypSee Notes
MAX5122 121Voltage- BufferedInt.
0.5
1
Serial - SPI4.55.50.620
QSOP/16
-40 to +85$4.00 @1k
MAX5123 
1
2
2.73.6
QSOP/16
$4.20 @1k
查看所有Precision DACs (249)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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