MAX5121 - +3V/+5V、12位、串行、电压输出DAC，内置电压基准

MAX5121是Maxim美信半导体公司的一款数据转换器和采样-保持电路产品，MAX5121是+3V/+5V、12位、串行、电压输出DAC，内置电压基准，本站介绍了MAX5121的封装应用图解、特点和优点、功能等，并给出了与MAX5121相关的Maxim元器件型号供参考。

MAX5121 - +3V/+5V、12位、串行、电压输出DAC，内置电压基准 - 数据转换器和采样-保持电路 - 业内首款10ppm/°C、内置基准、12位DAC - 美信半导体

产品概述

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

以下关键特性由Maxim美信半导体提供：

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)

热门应用

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

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