Product Summary

The AD7552KN is a 12-bit plus sign and overrange monolithic CMOS analog to digital converter. The "Quad Slope" conversion algorithm converts any offset voltages due to integrator, comparator etc. to a digital number and subsequently reduces the total system drift error to a second order effect. The AD7552KN parallel output data lines have three-state logic and are microprocessor compatible. Separate enable lines control the lower eight LSBs and the five MSBs. An overrange flag available which together with the BUSY and BUSY flags can be interrogated through the STATUS ENABLE providing easy microprocessor.

Parametrics

AD7552KN absolute maximum ratings: (1)VDD to AGND: 0V, +14V; (2)VDD to DGND: 0V, 14V; (3)VSS to AGND: 0V, -14V; (4)VSS to DGND: 0V, -14V; (5)AGND to DGND: 0V, +14V; (6)VCC to DGND: 0V, VDD; (7)VREF1: AGND, VDD; (8)VREF2: AGND, VDD; (9)AIN: VSS, VDD; (10)IRIN: VSS, VDD; (11)IRJCT: AGND, VDD; (12)IROUT: VSS, VDD; (13)Digital input voltage: DGND, VDD; (14)Digital output voltage: DGND, VCC; (15)Operating Temperature Range: 0 to +70℃; (16)Storage Temperature: -65 to +150℃; (17)Power Dissipation Up to +50℃: 1000mW; (18)Derates above +50℃ by: 10mW/℃; (19)Lead Temperature (soldering, 10secs): +300℃.

Features

AD7552KN features: (1)12-bit binary with polarity and overrange; (2)Accuracy ±1LSB; (3)Microprocessor Compatible; (4)Ratiometric Operation; (5)Low power Dissipation; (6)Low cost.

Diagrams

AD7552KN block diagram

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