EVALUATION KIT AVAILABLE MAX1452 Low-Cost Precision Sensor Signal Conditioner General Description Benefits and Features The MAX1452 is a highly integrated analog-sensor sig- Single-Chip, Integrated Analog Signal Path Reduces nal processor optimized for industrial and process con- Design Time and Saves Space in a Complete trol applications utilizing resistive element sensors. The Precision Sensor Solution MAX1452 provides amplification, calibration, and temper- Provides Amplification, Calibration, and ature compensation that enables an overall performance Temperature Compensation approaching the inherent repeatability of the sensor. The Fully Analog Signal Path fully analog signal path introduces no quantization noise Accommodates Sensor Output Sensitivities from in the output signal while enabling digitally controlled trim- 4mV/V to 60mV/V ming with the integrated 16-bit DACs. Offset and span are Single-Pin Digital Programming calibrated using 16-bit DACs, allowing sensor products to No External Trim Components Required be truly interchangeable. 16-Bit Offset and Span Calibration Resolution Supports Both Current and Voltage Bridge Excitation The MAX1452 architecture includes a programmable Fast 150s Step Response sensor excitation, a 16-step programmable-gain ampli- On-Chip Uncommitted Op Amp fier (PGA), a 768-byte (6144 bits) internal EEPROM, four 16-bit DACs, an uncommitted op amp, and an on-chip On-Chip Lookup Table Supports Multipoint temperature sensor. In addition to offset and span com- Calibration Temperature Correction Improving pensation, the MAX1452 provides a unique temperature System Performance compensation strategy for offset TC and FSOTC that was Secure-Lock Prevents Data Corruption developed to provide a remarkable degree of flexibility Low 2mA Current Consumption Simplifies Power- while minimizing testing costs. Supply Design in 420mA Applications The MAX1452 is packaged for the commercial, industrial, and automotive temperature ranges in 16-pin SSOP/ Ordering Information TSSOP and 24-pin TQFN packages. PART TEMP RANGE PIN-PACKAGE Customization MAX1452CAE+ 0C to +70C 16 SSOP Maxim can customize the MAX1452 for high-volume MAX1452EAE+ -40C to +85C 16 SSOP dedicated applications. Using our dedicated cell library of more than 2000 sensor-specific functional blocks, MAX1452AAE+ -40C to +125C 16 SSOP Maxim can quickly provide a modified MAX1452 solution. MAX1452AUE+ -40C to +125C 16 TSSOP Contact Maxim for further information. MAX1452ATG+ -40C to +125C 24 TQFN-EP* Applications MAX1452C/D 0C to +70C Dice** Pressure Sensors +Denotes a lead(Pb)-free/RoHS-compliant package. Transducers and Transmitters *EP = Exposed pad. Strain Gauges **Dice are tested at T = +25C, DC parameters only. A Pressure Calibrators and Controllers Resistive Elements Sensors Detailed Block Diagram and Pin Configurations appear at Accelerometers the end of data sheet. Humidity Sensors Outputs Supported 420mA 0 to +5V (Rail-to-Rail) +0.5V to +4.5V Ratiometric Secure-Lock is a trademark of Maxim Integrated Products, Inc. +2.5V to 2.5V 19-1829 Rev 5 4/15MAX1452 Low-Cost Precision Sensor Signal Conditioner Absolute Maximum Ratings Supply Voltage, V to V .........................................-0.3V, +6V Operating Temperature: DD SS Supply Voltage, V to V ................................-0.5V to +0.5V MAX1452CAE+/MAX1452C/D.............................0C to +70C DD DDF All Other Pins...................................(V - 0.3V) to (V + 0.3V) MAX1452EAE+.................................................-40C to +85C SS DD Short-Circuit Duration, FSOTC, OUT, BDR, MAX1452AAE+...............................................-40C to +125C AMPOUT................................................................Continuous MAX1452AUE+..............................................-40C to +125C Continuous Power Dissipation (T = +70C) MAX1452ATG+...............................................-40C to +125C A 16-Pin SSOP/TSSOP (derate 8.00mW/C above +70C)..640mW Junction Temperature.......................................................+150C 24-Pin TQFN (derate 20.8mW/C above +70C).................1.67W Storage Temperature Range .............................-65C 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. Electrical Characteristics (V = V = +5V, V = 0V, T = +25C, unless otherwise noted.) DD DDF SS A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS GENERAL CHARACTERISTICS Supply Voltage V 4.5 5.0 5.5 V DD EEPROM Supply Voltage V 4.5 5.0 5.5 V DDF Supply Current I (Note 1) 2.0 2.5 mA DD Maximum EEPROM Erase/ I 30 mA DDFW Write Current Maximum EEPROM Read I 12 mA DDFR Current Oscillator Frequency f 0.85 1 1.15 MHz OSC ANALOG INPUT Input Impedance R 1 MI IN Input-Referred Offset Tempco (Notes 2, 3) P1 V/C Input-Referred Adjustable Offset TC = 0 at minimum gain (Note 4) P150 mV Offset Range Percent of +4V span, V = +0.5V to OUT Amplifier Gain Nonlinearity 0.01 % 4.5V Specified for common-mode voltages Common-Mode Rejection Ratio CMRR 90 dB between V and V (Note 2) SS DD Input Referred Adjustable 4 to (Note 5) mV/V FSO Range 60 ANALOG OUTPUT Differential Signal-Gain Range Selectable in 16 steps 39 to 234 V/V Configuration 5:2 0000bin 34 39 46 Configuration 5:2 0001bin 47 52 59 Differential Signal Gain Configuration 5:2 0010bin 58 65 74 V/V Configuration 5:2 0100bin 82 91 102 Configuration 5:2 1000bin 133 143 157 Maximum Output-Voltage Swing No load from each supply 0.02 V Maxim Integrated 2 www.maximintegrated.com