The DAC312 series of 12-bit multiplicative digital-to-analog converters offer high-speed performance and guarantee 0.012% differential nonlinearity over the entire commercial operating temperature range.
The DAC312 combines a 9-bit master D/A converter and a 3-bit (MSB) segment generator to form a low-cost, precision 12-bit D/A converter. This technique ensures very consistent step sizes (up to ± 1/2 LSB from ideal), monotonicity up to 12 bits, and integral nonlinearity of 0.05% for differential current output. To achieve the same performance as the 12-bit R-2R keystone resistor design, temperature-integrated nonlinearity of 1/2 LSB (0.012%) is required.
The settling time of 250 ns, low burr energy, and low power consumption are the result of attention to circuit design details and tight process control. Direct interfaces with all common logic families are implemented through logic threshold sides.
Other features of the DAC312 include high supply voltage, low drift (as low as 10 ppm/°C), and superior supply rejection ratio (±.001% FS/%(Δ)V). The operating voltage range is +5/-11 V to ±18 V, and the power consumption is 225 mW at low supply voltage and 375 mW absolute maximum power consumption at high supply voltage.
With its excellent guaranteed specifications, single-chip reliability, and low cost, the DAC312 is an ideal building block for applications requiring low power consumption and complete input/output versatility, such as A/D converters, data acquisition systems, video display drivers, programmable test equipment, and more.