Analog Devices

The DAC10 series of 10-bit monolithic multiplying digital-to-analog converters provide high speed performance and full-scale accuracy. Advanced circuit design achieves 85 ns settling times with very low "glitch" energy and low power consumption. Direct interface to all popular logic families with full noise immunity is provided by the high swing, adjustable threshold logic inputs.All DAC10 series models guarantee full 10-bit monotonicity, and nonlinearities as tight as +0.05% over the entire operating temperature range are available. Device performance is essentially unchanged over the ±18 V power supply range, with 85 mW power consumption attainable at lower supplies.A highly stable, unique trim method is used, which selectively shorts Zener diodes, to provide 1/2 LSB full-scale accuracy without the need for laser trimming.Single-chip reliability, coupled with low cost and outstanding flexibility, make the DAC10 device an ideal building block for A/D converters, Data Acquisition systems, CRT displays, programmable test equipment and other applications where low power consumption, input/output versatility and long-term stability are required.

The DAC312 series of 12-bit multiplying digital-to-analog converters provide high speed with guaranteed performance to 0.012% differential nonlinearity over the full commercial operating temperature range.The DAC312 combines a 9-bit master D/A converter with a 3-bit (MSBs) segment generator to form an accurate 12-bit D/A converter at low cost. This technique guarantees a very uniform step size (up to ±1/2 LSB from the ideal), monotonicity to 12-bits and integral nonlinearity to 0.05% at its differential current outputs. In order to provide the same performance with a 12-bit R-2R ladder design, an integral nonlinearity over temperature of 1/2 LSB (0.012%) would be required.The 250 ns settling time with low glitch energy and low power consumption are achieved by careful attention to the circuit design and stringent process controls. Direct interface with all popular logic families is achieved through the logic threshold terminal.High compliance and low drift characteristics (as low as 10 ppm/°C) are also features of the DAC312 along with an excellent power supply rejection ratio of ±.001% FS/%∆V. Operating over a power supply range of +5/–11 V to ±18 V the device consumes 225 mW at the lower supply voltages with an absolute maximum dissipation of 375 mW at the higher supply levels.With their guaranteed specifications, single chip reliability and low cost, the DAC312 device makes excellent building blocks for A/D converters, data acquisition systems, video display drivers, programmable test equipment and other applications where low power consumption and complete input/output versatility are required.