MONOLITHIC QUAD 10-BIT DAC INTEGRATES SYSTEM FEATURES FOR SIMPLER, MORE COMPACT DESIGNS
Full Military-Qualified DAC1054CMJ/883 Includes On-Chip Reference, Four Output Amps, and Readback Verification
Santa Clara, Calif., June 28, 1995 -- A single-chip, quad 10-bit DAC that incorporates such system oriented features as on-chip reference, four output amplifiers, and data readback verification capabilities now is available from National Semiconductor's Military and Aerospace Division. An expansion of National's technologies for shaping information, the full military-qualified DAC1054CMJ/883 is offered for designers of avionics and missile systems who value ease of design, short cycle time, high reliability, and compact printed circuit board layout.
With four on-chip 10-bit DACs, the DAC1054CMJ/883 provides a simpler integrated solution for users of discrete 10-bit DACs or a performance upgrade from quad 8-bit designs. Also helping to pare component count and shorten design time are the on-board 2.65-V reference, four output amps that can drive 2 kilo-ohms, convenient serial microprocessor interface, and a data readback capability that allows a microprocessor to verify that the DAC1054CMJ/883 has properly latched the desired input word. High integration also helps save weight, cut inventory, and increase reliability over larger hybrid products.
Other features include low power of 100mW maximum, single +5V operation, power fail flag, synchronous/asynchronous updates of the DAC outputs, and a fast output settling time of 3.7 microseconds maximum. The DAC1054CMJ/883 is fully MIL-STD-883 qualified under National's newly validated QML system to operate over the military temperature range of -55 to +125ºC. In addition, the device is assigned DESC Standard Military Drawing Number 5962-9466201QJA.
For design flexibility, the integrated microprocessor interface and control circuitry feature double buffering. The latching registers are double buffered, consisting of four separate input registers and four DAC registers. This enables a designer to write to any one of the input registers or to all four at once, or to update the four DAC outputs simultaneously or individually.
The four reference inputs enable a designer to configure a system to have a separate output voltage range for each DAC. This output range is from 0.3V to 2.8V and is a function of (sub) BIAS, V(sub) REF, and the input word.
MIL95007
Lit.#102300-001
