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MAX5123：+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

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.

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)

MAX5122、MAX5123：功能原理框图 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

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
• Force/Sense DAC Applications

相关产品

• MAX5132：+5V/+3V、13位、串行、加载/感应DAC，带有10ppm/°C内部电压基准
• MAX5120：+3V/+5V、12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

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