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Description

The DAC8803 is a quad, 14-bit, current-output digital-to-analog converter (DAC) designed to operate from a single +2.7-V to 5-V supply. The applied external reference input voltage VREF determines the full-scale output current. An internal
feedback resistor (RFB) provides temperature tracking for the full-scale output when combined with an external I-to-V precision amplifier. A doubled buffered serial data interface offers high-speed, 3-wire, SPI and microcontroller compatible inputs using serial data in (SDI), clock (CLK), and a chip select (CS). In addition, a serial data out pin (SDO) allows for daisy chaining when multiple packages are used. A common level-sensitive load DAC strobe (LDAC) input allows simultaneous update of all DAC outputs from
previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to zero at system turn on. An MSB pin allows system
reset assertion (RS) to force all registers to zero code when MSB = 0, or to half-scale code when MSB = 1. 

Features

• Relative Accuracy: 1 LSB Max
• Differential Nonlinearity: 1 LSB Max
• 2-mA Full-Scale Current with VREF= ±10 V
• 0.5-µs Settling Time
• Midscale or Zero-Scale Reset
• Four Separate 4Q Multiplying Reference Inputs
• Reference Bandwidth: 10 MHz
• Reference Dynamics: -105 dB THD
• SPI™-Compatible 3-Wire Interface: 50-MHz
• Double Buffered Registers Enable
• Simultaneous Multichannel Update
• Internal Power-On Reset
• Compact SSOP-28 Package
• Industry-Standard Pin Configuration