AD7837 Datasheet

• Two 12-Bit MDACs with Output Amplifiers
• Space-Saving 0.3", 24-Lead DIP and 24-Terminal SOIC Package
• 4-Quadrant Multiplication
• (8+4) Loading Structure: AD7837

• Automatic Test Equipment
• Function Generation
• Waveform Reconstruction
• Programmable Power Supplies
• Synchro Applications

The AD7837 is a complete, dual, 12-bit multiplying digital-to-analog converter with output amplifiers on a monolithic CMOS chip. No external user trims are required to achieve full specified performance.

Both parts are microprocessor compatible, with high speed data latches and interface logic. The AD7837 has a double-buffered 8-bit bus interface structure with data loaded to the respective input latch in two write operations. An asynchronous LDAC signal on the AD7837 updates the DAC latches and analog outputs.

The output amplifiers are capable of developing ±10 V across a 2 kΩ load. They are internally compensated with low input offset voltage due to laser trimming at wafer level.

The AD7837 is fabricated in Linear Compatible CMOS (LC²MOS), an advanced, mixed technology process that combines precision bipolar circuits with low power CMOS logic.

A novel low leakage configuration (U.S. Patent No. 4,590,456) ensures low offset errors over the specified temperature range.