MAX545

+5V、串行输入、电压输出、14位DAC

单通道、串行、电压输出DAC,采用SO封装


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说明

The MAX544/MAX545 are serial-input, voltage-output, 14-bit digital-to-analog converters (DACs) that operate from a single +5V supply. They provide 14-bit performance (±0.5LSB INL and ±0.9LSB DNL) over temperature without any adjustments. The DAC output is unbuffered, resulting in a low supply current of 0.3mA and a low offset error of 0.6mV.

The DAC output range is 0V to VREF. For bipolar operation, matched scaling resistors are provided in the MAX545 for use with an external precision op amp (such as the MAX400), generating a ±VREF output swing. The MAX545 also includes Kelvin-sense connections for the reference and analog ground pins to reduce layout sensitivity. A 16-bit serial word is used to load data into the DAC latch. The 10MHz, 3-wire serial interface is compatible with SPI™/QSPI™/MICROWIRE™, and it also interfaces directly with optocouplers for applications requiring isolation. A power-on reset circuit clears the DAC output to 0V (unipolar mode) when power is initially applied. The MAX544 is available in 8-pin plastic DIP and SO packages. The MAX545 is available in 14-pin plastic DIP and SO packages.
MAX544、MAX545:功能原理框图 MAX544、MAX545:功能原理框图 放大+

关键特性

  • Full 14-Bit Performance Without Adjustments
  • +5V Single-Supply Operation
  • Low Power: 1.5mW
  • 1µs Settling Time
  • Unbuffered Voltage Output Directly Drives 60-kilohm Loads
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface
  • Power-On Reset Circuit Clears DAC Output to 0V (unipolar mode)
  • Schmitt-Trigger Inputs for Direct Optocoupler Interface
  • Pin-Compatible 16-Bit Upgrades (MAX541/MAX542)

应用

  • 自动测试设备(ATE)
  • 数据采集
  • 数字增益与失调控制
  • 工业过程控制
  • 仪表
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
MAX544 141Voltage- UnbufferedExt.
0.5
1
Serial - SPI4.755.251.11
PDIP/8
SOIC (N)/8
-40 to +85
0 to +70
$8.30 @500
MAX545 
PDIP/14
SOIC (N)/14
-55 to +125
-40 to +85
0 to +70
$8.30 @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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