Quad Six-Bit Digital-to-Analog Converter

CMOS

The MC144112 contains four independent DACs which are controlled through a common serial data port. When all DACs are utilized, there are 24 bits in the serial data stream. However, if not all DACs are utilized, the bit stream length may be reduced by up to six bits per unused DAC.

For new designs, the MC144112 is preferred over the MC144110 and MC144111. The newer MC144112 offers a wider operating temperature range, lower operating supply voltage, and lower supply current.

? Operating Supply Voltage Range: 2.7 to 5.5 V *

? Maximum Supply Current (per Package) —

All DAC Outputs = Zero: 1.25 mA @ 2.7 V

2.1 mA @ 4.5 V

All DAC Outputs = Full Scale: 30 μA @ 5.5 V

? Integral Nonlinearity: – 1 1/4 to 1/4 LSB

? Operating Temperature Range: – 40 to 85°C

? Direct R–2R Network Outputs

? Direct Interface to Motorola SPI Serial Data Port

? Digital Data Output Permits Cascading