The MAX1455 is a highly integrated automotive analogsensor
signal processor for resistive element sensors.
The MAX1455 provides amplification, calibration, and
temperature compensation that enable an overall performance
approaching the inherent repeatability of the
sensor. The fully analog signal path introduces no
quantization noise in the output signal while enabling
digitally controlled trimming with integrated 16-bit digital-
to-analog converters (DACs). Offset and span are
also calibrated using 16-bit DACs, allowing sensor
products to be truly interchangeable.
The MAX1455 architecture includes a programmable
sensor excitation, a 16-step programmable-gain amplifier
(PGA), a 768-byte (6144 bits) internal EEPROM,
four 16-bit DACs, an uncommitted op amp, and an onchip
temperature sensor. In addition to offset and span
compensation, the MAX1455 provides a unique temperature
compensation strategy that was developed to
provide a remarkable degree of flexibility while minimizing
testing costs.
The MAX1455 is available in die form, 16-pin SSOP and
TSSOP packages.