MP7614

V_DD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0 to +17 V
Digital Input Voltage to GND . . . ..... GND 0.5 to V_DD +0.5 V
I_OUT1, I_OUT2 to GND . . . . . . . . . . . . GND 0.5 to V_DD +0.5 V
V_REF to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +25 V
V_RFB to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +25 V
Storage Temperature . . . . . . . . . . . . . . . . .  65 to +150
Lead Temperature (Soldering, 10 seconds) . . . . . .. . . +300
Package Power Dissipation Rating to 75
CDIP, PDIP, SOIC . . . . . . . . . . . . . . . . . . . . . ....... . . . 900mW
Derates above 75. . . . . . . . . . . . . . . . . . . . . . ... . . 12mW/

NOTES:
1 Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation at or above this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.
2 Any input pin which can see a value outside the absolute maximum ratings should be protected by Schottky diode clamps (HP5082-2835) from input pin to the supplies. All inputs have protection diodes which will protect the device from short transients outside the supplies of less than 100mA for less than 100ms.

The MP7614 is a high density 14-bit CMOS multiplying Digital- to-Analog Converter. Silicon nitride passivation and untrimmed silicon chromium resistors have been combined to provide long term stability and reliability. Using the most significant bit (MSB) segmentation technique, the MP7614 features 13-bit (0.012%) differential and 12-bit (0.01%) integral linearity.

To achieve 13-bit linearity without laser trim, the MP7614 digitally decodes the four MSB's into 15 equal current sources, rather than the standard binary-weighted sources. Each resistor contributes only 1/16 full scale output thus reducing the matching accuracy requirement of the resistor and CMOS switches from 0.0015% to 0.006%.

The decoding technique of MP7614 achieves an eightfold improvement in differential linearity stability over temperature, an eightfold improvement in relative accuracy due to aging effects (long term stability), a fourfold improvement in glitch amplitude, and a tenfold reduction in sensitivity to output amplifier offset voltage.