|Category||Automotive => Sensor Interface|
|Description||Low-Cost Precision Sensor Signal Conditioner
The MAX1452 is a highly integrated analog-sensor signal processor optimized for industrial and process control applications utilizing resistive element sensors. The MAX1452 provides amplification, calibration, and temperature compensation that enables 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 the integrated 16-bit DACs. Offset and span are calibrated using 16-bit DACs, allowing sensor products to be truly interchangeable.
The MAX1452 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 temperature sensor. In addition to offset and span compensation, the MAX1452 provides a unique temperature compensation strategy for offset TC and FSOTC that was developed to provide a remarkable degree of flexibility while minimizing testing costs.
|Company||Maxim Integrated Products|
|Datasheet||Download MAX1452EAE datasheet
o Provides Amplification, Calibration, and Temperature Compensation o Accommodates Sensor Output Sensitivities from 60mV/V o Single Pin Digital Programming o No External Trim Components Required o 16-Bit Offset and Span Calibration Resolution o Fully Analog Signal Path o On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction o Supports Both Current and Voltage Bridge Excitation o Fast 150µs Step Response o On-Chip Uncommitted Op Amp o Secure-LockTM Prevents Data Corruption o Low 2mA Current Consumption
The is a highly integrated analog-sensor signal processor optimized for industrial and process control applications utilizing resistive element sensors. The MAX1452 provides amplification, calibration, and temperature compensation that enables 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 the integrated 16-bit DACs. Offset and span are calibrated using 16-bit DACs, allowing sensor products to be truly interchangeable. The MAX1452 architecture includes a programmable sensor excitation, a 16-step programmable-gain amplifier (PGA), 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 MAX1452 provides a unique temperature 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, industrial, and automotive temperature ranges in 16-pin SSOP/ TSSOP and 24-pin TQFN packages.
Maxim can customize the MAX1452 for high-volume dedicated applications. Using our dedicated cell library of more than 2000 sensor-specific functional blocks, Maxim can quickly provide a modified MAX1452 solution. Contact Maxim for further information.TEMP RANGE to +125°C PIN-PACKAGE 16 SSOP 16 SSOP 16 SSOP 16 TSSOP 24 TQFN-EP*
Pressure Sensors Transducers and Transmitters Strain Gauges Pressure Calibrators and Controllers Resistive Elements Sensors Accelerometers Humidity Sensors
to +70°C Dice** +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed pad. **Dice are tested +25°C, DC parameters only.Detailed Block Diagram and Pin Configurations appear at the end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
Supply Voltage, VDD VSS.........................................-0.3V, +6V Supply Voltage, VDD to +0.5V All Other Pins...................................(VSS 0.3V) to (VDD + 0.3V) Short-Circuit Duration, FSOTC, OUT, BDR, AMPOUT................................................................Continuous Continuous Power Dissipation (TA +70°C) 16-Pin SSOP/TSSOP (derate 8.00mW/°C above +70°C)..640mW 24-Pin TQFN (derate 20.8mW/°C above +70°C)...........1.67W Operating Temperature: to +125°C Junction Temperature......................................................+150°C Storage Temperature to +150°C Lead Temperature (soldering, 10s)................................ +300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
PARAMETER GENERAL CHARACTERISTICS Supply Voltage EEPROM Supply Voltage Supply Current Maximum EEPROM Erase/Write Current Maximum EEPROM Read Current Oscillator Frequency ANALOG INPUT Input Impedance Input Referred Offset Tempco Input Referred Adjustable Offset Range Amplifier Gain Nonlinearity Common-Mode Rejection Ratio Input Referred Adjustable FSO Range ANALOG OUTPUT Differential Signal-Gain Range Selectable in 16 steps Configuration [5:2] 0000bin Configuration [5:2] 0001bin Differential Signal Gain Configuration [5:2] 0010bin Configuration [5:2] 0100bin Configuration [5:2] 1000bin Maximum Output-Voltage Swing No load from each supply to V V/V CMRR RIN (Notes 2, 3) Offset 0 at minimum gain (Note 4) Percent of +4V span, VOUT to 4.5V Specified for common-mode voltages between VSS and VDD (Note 2) (Note 60 M µV/°C % dB mV/V VDD VDDF IDD IDDFW IDDFR fOSC 0.85 (Note V mA MHz SYMBOL CONDITIONS MIN TYP MAX UNITS
PARAMETER Output-Voltage Low Output-Voltage High Output Impedance at DC Output Offset Ratio Output Offset TC Ratio Step Response and IC (63% Final Value) Maximum Capacitive Load Output Noise BRIDGE DRIVE Bridge Current Mirror Ratio VSPAN Range (Span Code) DIGITAL-TO-ANALOG CONVERTERS DAC Resolution ODAC Bit Weight OTCDAC Bit Weight FSODAC Bit Weight FSOTCDAC Bit Weight COARSE OFFSET DAC IRODAC Resolution IRODAC Bit Weight FSOTC BUFFER Minimum Output-Voltage Swing Maximum Output-Voltage Swing Current Drive INTERNAL RESISTORS Current-Source Reference Resistor RISRC k No load No load VFSOTC = +2.5V VDD VSS V µA VOUT/ Code Including sign Input referred, DAC reference = VDD = +5.0V (Note 4 9 Bits mV/bit VOUT/ Code VOUT/ Code VOUT/ Code VOUT/ Code DAC reference = VDD = +5.0V DAC reference = VBDR = +2.5V DAC reference = VDD = +5.0V DAC reference = VBDR = +2.5V Bits µV/bit IBDR = 1.7k RISOURCE = internal TA = TMIN to TMAX C000 mA A/A hex to 1kHz (gain = minimum, source impedance = 5k VDDF filter) VOUT/ Offset VOUT/ Offset TC 0.90 SYMBOL CONDITIONS IOUT = 1mA sinking, TA = TMIN to TMAX IOUT = 1mA sourcing, TA = TMIN to TMAX 4.75 MIN TYP MAX 0.20 UNITS V V/V µs µF mVRMS
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