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MAX514：CMOS、四路、12位、串行输入乘法DAC

The MAX514 contains four 12-bit R-2R multiplying digital-to-analog converters (DACs), each with a serial-in parallel-out shift register, a DAC register, and control logic. The MAX514’s 3-wire serial interface design minimizes the number of package pins and internal level translators, so it uses less board space and dissipates less power (10mW max) than parallel-interface devices. When used with microprocessors (µPs) with a serial port, the MAX514 minimizes digital-noise feedthrough from its logic input pins to its analog output. To further reduce noise, the µP serial port can be used as a dedicated analog bus and kept inactive while the MAX514 is in use. Serial interfacing also simplifies opto-coupler or transformer-isolated applications. This device uses low-tempco thin-film resistors, laser trimmed to ±1 LSB linearity, with gain accuracy better than ±1½ LSB. The MAX514 is specified with a +5V power supply. All logic inputs are TTL and CMOS compatible. It comes in space-saving 24-pin DIP and 28-pin SO packages.

关键特性 Four 12-Bit Accurate DACs Fast 3-Wire Serial Interface Low Differential Nonlinearity: at ±½ LSB Max Low Integral Nonlinearity: at ±1 LSB Max Gain Accuracy to at ±1½ LSB Max Low Gain Tempco: 5ppm/°C Max Operates from a Single +5V Power Supply TTL/CMOS Compatible Available in 24-Pin DIP and 28-Pin SO Packages

MAX514：功能原理框图 应用 µP控制系统 任意波形发生器(AWG) 自动测试设备 数字增益/失调调节 工业过程控制 运动控制系统 可编程放大器/衰减器

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技术资料

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