• 简体中文
• English

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 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

关键参数

技术资料

• Damage from a Lightning Bolt or a Spark—It Depends on How Tall You Are!
• How Signal Chains and PLCs Impact Our Lives

质量和环境数据

• MAX5121.pdf

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