4–20mA OUTPUT SENSOR SIGNAL CONDITIONER RESULTS IN 1% ACCURATE SENSORS
SUNNYVALE, CA—March 29, 2000—Maxim Integrated Products introduces the latest member of the sensor signal conditioning product line, the MAX1459. The MAX1459 can compensate for nonlinearities of piezoresistive transducers to better than 1% accuracy and has an uncommitted op amp that can be configured easily to provide a 4–20mA industrial interface or the diagnostic clip voltages commonly required by the automobile manufacturers. The MAX1459 can also compensate non-bulk, micromachined sensors, strain gauges, or similar resistive-based sensors.
The MAX1459 employs electronic trimming, eliminating much of the manual content of production, such as laser-trim. This greatly simplifies the manufacturing of sensor modules. Production flow is more efficient, as the MAX1459 consolidates the manufacturing steps of pre-test, calibration, compensation, and final test. To speed development and improve time-to-market, the MAX1459 is also supported by Maxim’s new Pilot Production System, a complete production system that allows the user to quickly set up a manufacturing line. Running under LabVIEW™, one Pilot Production System can program up to 110 sensor modules simultaneously. The basic system is available FREE to users committing to volumes of greater than 10,000 units per year. The system is available for lease to lower-volume users.
The MAX1459 has a complete analog signal path with integrated digital correction through four internal 12-bit DACs. These DACs can be programmed to correct for Span, Span TC, Offset, and Offset TC. A fifth low-resolution DAC can adjust course offset. The product can be programmed through a digital interface, and the correction coefficients can be stored in the MAX1459’s internal EEPROM sensors.
The MAX1459 is designed using smart signal conditioning’s dedicated cell library of more than 200 sensor-specific functional blocks spanning from low-power op amps to integrated temperature sensors and DSP engines. For high-volume applications, Maxim can quickly customize the MAX1459 to optimize price and performance. Please contact Maxim for more details.
The MAX1459 is offered in space-saving 20-pin SSOP packages with prices starting from $2.95 (1000-up, FOB USA). The MAX1459 joins a family of sensor conditioning circuits from the low-cost laser-trim MAX1450 to the fully digital MAX1460.
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