MX7224LN+

The MX7224LN+ is a CMOS, double buffered, 8bit digital to analogue converter (DAC) with voltage output amplifier in 18 pin DIP package. The output voltage is of same polarity as the external reference voltage thus allowing single supply operation and fully specified accuracy is achieved with no external trims. This DAC consist of a stable thin-film resistor R-2R ladder and eight NMOS single pole, double throw switches. The double buffered interface logic is included to allow simultaneous updating in systems which have several DAC channels in operation. Control is provided by active-low CS, active-low WR and active-low LDAC (Load DAC) inputs. An active-low RESET input is provided which acts as a zero override. All logic inputs are compatible with TTL and 5V CMOS logic levels. The DAC output can drive +10V into a 2kohm load. This is used in automatic calibration, digital attenuator and function generator.

• Supply voltage range is 11.4V to 16.5V, -4.5V to -5.5V
• Operating temperature range from 0°C to 70°C
• Single or dual supply operation
• Unadjusted error is ±1LSB at VDD = 11.4V to 16.5V
• Double buffered logic inputs
• Relative accuracy is ±1/2LSB at VDD = 11.4V to 16.5V
• Typical voltage output slew rate is 10V/µS at VDD = 11.4V to 16.5V
• Full scale temperature coefficient is ±5ppm/°C at VDD = 11.4V to 16.5V, Vref= +10V

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Signal Processing

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