The DAC312 family of 12-bit multiplying digital-to-analog converters offers high-speed performance with guaranteed differential nonlinearity of 0.012% over the full commercial operating temperature range.
The DAC312 combines a 9-bit master D/Aconverterand 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 deviations± from ideals), monotonicity up to 12 bits, and integral nonlinearity of 0.05% for differential current outputs. To achieve the same performance as a 12-bit R-2R ladder resistor design, a temperature integral nonlinearity of 1/2 LSB (0.012%) is required.
The 250 ns settling time, low glitch energy, and low power consumption are the result of attention to circuit design detail and tight process control. Direct interfaces to all common logic families are implemented via the logical threshold side.
Other features of the DAC312 include high supply voltage, low drift (down to 10 ppm/°C), and excellent power 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 at high supply voltage.
With 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, and programmable test equipment.