Details, datasheet, quote on part number: MAX1455AUE
PartMAX1455AUE
CategorySensors => Sensor Signal Conditioners
TitleSensor Signal Conditioners
DescriptionMAX1455 Low-cost Automotive Sensor Signal Conditioner
CompanyMaxim Integrated Products
DatasheetDownload MAX1455AUE datasheet
Cross ref.Similar parts: PGA309, PGA309-HT, TPIC83000-Q1
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Features, Applications

o Provides Amplification, Calibration, and Temperature Compensation o Selectable Output Clipping Limits o Accommodates Sensor Output Sensitivities from 40mV/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 PRT Bridge Can Be Used for TemperatureCorrection Input o On-Chip Lookup Table Supports Multipoint Calibration Temperature Correction o Fast 3.2kHz Frequency Response o On-Chip Uncommitted Op Amp o Secure-LockTM Prevents Data Corruption

The 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), 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.

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.

TEMP. RANGE to +125C PIN-PACKAGE 16 TSSOP 16 TSSOP 16 SSOP 16 SSOP
Applications

Pressure Sensors and Transducers Piezoresistive Silicon Sensors Strain Gauges Resistive Element Sensors Accelerometers 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.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.

Supply Voltage, VDD_ VDD2..............................................................-0.3V, +0.6V All Other Pins..................................(VSS 0.3V) to (VDD_ + 0.3V) Short-Circuit Duration, OUT, BDR, AMPOUT.............Continuous Continuous Power Dissipation (TA +70C) 16-Pin SSOP (derate 8.00mW/C above +70C).........640mW Operating Temperature Ranges (TMIN to TMAX) to +125C Storage Temperature to +150C Lead Temperature (soldering, 10s)................................ +300C

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 Supply Current Oscillator Frequency ANALOG INPUT Input Impedance Input-Referred Adjustable Offset Range Input-Referred Offset Tempco Amplifier Gain Nonlinearity Common-Mode Rejection Ratio Minimum Input-Referred FSO Range Maximum Input-Referred FSO Range ANALOG OUTPUT Minimum Differential SignalGain Range Maximum Differential SignalGain Range PGA = 0000 PGA = 11 Load Current Source Low High Low High Low High Low High mA V V/V CMRR Specified for common-mode voltages between VSS and VDD (Note 3) (Note 3) RIN Offset = 0 (Note 2), minimum gain TA = TMIN to TMAX M mV V/C % dB mV/V VDD IDD fOSC + IDD2 (Note V mA MHz SYMBOL CONDITIONS MIN TYP MAX UNITS

PARAMETER Load Current Sink DC Output Impedance Offset DAC Output Ratio Offset TC DAC Output Ratio Step Response Output Capacitive Load Output Noise BRIDGE DRIVE Bridge Current Mirror Ratio Minimum FSODAC 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 INTERNAL RESISTORS Current-Source Reference Full-Span Output (FSO) Trim Resistor Temperature Coefficient Minimum Resistance Value Maximum Resistance Value Resistor Matching AUXILIARY OP AMP Open-Loop Gain Input Common-Mode Range Output Swing VCM No load, TA = TMIN to TMAX VSS 0.01 90 VDD dB V RISRC RSTC Applies to RISRC and RSTC Applies to RISRC and RSTC Applies to RISRC and RSTC RISRC to RSTC k ppm/C k % Excluding sign bit VOUT/CODE, input referred, DAC reference = VDD = +5.0V (Note 3 9 Bits mV/Bit VOUT / CODE, DAC reference = VDD = +5.0V (Note 4) VOUT / CODE, DAC reference = VBDR = 2.5V (Note 4) VOUT / CODE, DAC reference = VDD = +5.0V (Note 4) VOUT / CODE, DAC reference = VBDR = 2.5V (Note Bits V/Bit Recommended minimum value IBDR VBDR 3.75V mA mA/mA Hex to 1kHz (gain = minimum, source impedance 5k) 2.5 VOUT/ODAC VOUT/OTCDAC 63% of final value SYMBOL CONDITIONS VOUT TA = TMIN to TMAX, Clip[1:0] MIN TYP MAX 2 UNITS mA V/V s nF mVRMS


 

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