EVALUATION KIT AVAILABLE
Low-Cost Precision Sensor Signal Conditioner
The MAX1455 is a highly integrated, sensor signal pro-
cessor for resistive element sensors. The MAX1455 pro-
vides amplification, calibration, and temperature compen-
sation 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 on-chip tempera-
ture sensor. In addition to offset and span compensation,
the MAX1455 provides a unique temperature compensa-
tion strategy that was developed to provide a remarkable
degree of flexibility while minimizing testing costs.
The MAX1455 is available in die form, and in 16-pin
SSOP and TSSOP packages.
Maxim can customize the MAX1455 for high-volume
dedicated applications. Using our dedicated cell library of
more than 2000 sensor-specific function blocks, Maxim
can quickly provide a modified MAX1455 solution. Contact
Maxim for further information.
●● Pressure Sensors and Transducers
●● Piezoresistive Silicon Sensors
●● Strain Gauges
●● Resistive Element Sensors
●● Humidity Sensors
●● MR and GMR Sensors
●● Ratiometric Voltage Output
●● Programmable Output Clip Limits
A detailed Functional Diagram appears at end of data sheet.
Secure-Lock is a trademark of Maxim Integrated Products, Inc.
●● Provides Amplification, Calibration, and Temperature
●● Selectable Output Clipping Limits
●● Accommodates Sensor Output Sensitivities
from 5mV/V to 40mV/V
●● Single-Pin Digital Programming
●● No External Trim Components Required
●● 16-Bit Offset and Span Calibration Resolution
●● Fully Analog Signal Path
●● PRT Bridge Can Be Used for Temperature-Correction
●● On-Chip Lookup Table Supports Multipoint
Calibration Temperature Correction
●● Fast 3.2kHz Frequency Response
●● On-Chip Uncommitted Op Amp
●● Secure-Lock™ Prevents Data Corruption
TEMP. RANGE PIN-PACKAGE
-40°C to +125°C 16 SSOP
MAX1455AUE* -40°C to +125°C 16 TSSOP
-40°C to +85°C 16 SSOP
-40°C to +85°C 16 TSSOP
-40°C to +85°C Dice**
*Future Product—Contact factory for availability.
*Dice are tested at TA = +25°C, DC parameters only.
19-2088; Rev 2; 5/14