MAX1452

Features:

 Provides Amplification, Calibration, and Temperature Compensation
Accommodates Sensor Output Sensitivities from 1mV/V to 40mV/V
Single Pin Digital Programming
No External Trim Components Required
16-Bit Offset and Span Calibration Resolution
Fully Analog Signal Path
On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction
Supports Both Current and Voltage Bridge Excitation
Fast 3.2kHz Frequency Response
On-Chip Uncommitted Op Amp
Secure-Lock™ Prevents Data Corruption
Low 2mA Current Consumption 


Application

Pressure Sensors
Transducers and Transmitters
Strain Gauges
Pressure Calibrators and Controllers
Resistive Elements Sensors
Accelerometers
Humidity Sensors


Pinout




Specifications

Supply Voltage, V_DD to V_SS..............................................-0.3V, +6V
All Other Pins ........................................(V_SS - 0.3V) to (V_DD + 0.3V)
Short-Circuit Duration, FSOTC, OUT, BDR,
     AMPOUT .....................................................................Continuous
Continuous Power Dissipation (T_A = +70°C)
    16-Pin SSOP (derate 8.00mW/°C above +70°C) ............640mW
Operating Temperature:
    MAX1452CAE/MAX1452C/D ...................................0°C to +70°C
    MAX1452EAE ......................................................-40°C to +85°C
    MAX1452AAE ....................................................-40°C to +125°C
Junction Temperature...........................................................+150°C
Storage Temperature............................................-65°C to +150°C
Lead Temperature (soldering, 10s) ..................................... +300°C


Description

The MAX1452 is a highly integrated analog-sensor sig-nal processor optimized for industrial and process con-trol applications utilizing resistive element sensors.The MAX1452 provides amplification, calibration, and temperature compensation that enables an overall per-formance 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 the integrated 16-bit DACs. Offset and span are calibrated using 16-bit DACs, allowing sensor products to be truly inter-changeable.

The MAX1452 architecture includes a programmable sensor excitation, a 16-step programmable-gain ampli-fier (PGA), a 768-byte (6144 bits) internal EEPROM,four 16-bit DACs, an uncommitted op amp, and an on-chip temperature sensor. In addition to offset and span compensation. The MAX1452 provides a unique tem-perature compensation strategy for offset TC and FSOTC that was developed to provide a remarkable degree of flexibility while minimizing testing costs.

The MAX1452 is packaged for the commercial, industri-al, and automotive temperature ranges in 16-pin SSOP packages.