MAX5121:+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

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.

关键特性
  • 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)
MAX5120、MAX5121:功能原理框图
MAX5120、MAX5121:功能原理框图
应用
  • 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
数据手册DataSheet
语言下载文件备注
英文MAX5120-MAX5121.pdfRev 0; 02/1999
关键参数
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
MAX5120121Voltage- BufferedInt.
  • 0.5
  • 1
Serial - SPI4.55.50.620QSOP/16-40 to +85$4.00 @1k
MAX5121
  • 1
  • 2
2.73.6QSOP/16$5.52 @1k
技术资料
质量和环境数据
相关产品
  • MAX5122:+5V/+3V、12位、串行、加载/感应DAC,带有10ppm/°C内部电压基准
  • MAX5130:+3V/+5V、13位、串行、电压输出DAC,内置电压基准
  • MAX5353:低功耗、12位、电压输出DAC,串行接口
  • MAX5352:低功耗、12位、电压输出DAC,串行接口
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX5121AEEE停止供货MAX5121AEEE+QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX5121AEEE+生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX5121AEEE+T生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX5121AEEE-T停止供货MAX5121AEEE+TQSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX5121BEEE停止供货MAX5121BEEE+QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX5121BEEE+生产中QSOP,;16引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX5121BEEE+T生产中QSOP;16引脚-40°C至+85°C参考数据资料
MAX5121BEEE-T停止供货MAX5121BEEE+TQSOP;16引脚-40°C至+85°C参考数据资料
MAX5120-MAX5121.pdf MAX5121
Damage from a Lightning Bolt or a Spark—It Depends on How Tall You Are! MAX5484
How Signal Chains and PLCs Impact Our Lives MAX5421
MAX5121.pdf MAX5121
功能原理框图 MAX5121