Details, datasheet, quote on part number: MAX1459C/D
CategorySensors => Sensor Signal Conditioners
Description2-wire, 4-20ma Smart Signal Conditioner
CompanyMaxim Integrated Products
DatasheetDownload MAX1459C/D datasheet
Find where to buy


Features, Applications

o Highly Integrated Sensor Signal Conditioner for 2-Wire, 420mA Transmitters o Sensor Errors Trimmed Using Correction Coefficients Stored in Internal EEPROM-- Eliminates the Need for Laser Trimming and Potentiometers o Compensates Offset, Offset TC, FSO, FSOTC, FSO Linearity o Programmable Current Source to 2.0mA) for Sensor Excitation o Fast Signal-Path Settling Time (1ms) o Accepts Sensor Outputs from +40mV/V o Fully Analog Signal Path o Internal or External Temperature Reference Compensation o Automated Pilot Production (Calibration/ Compensation) System Available o Write Protection for EEPROM Data Security

The MAX1459 highly integrated analog-sensor signal conditioner is optimized for piezoresistive sensor calibration and compensation with minimal external components. It includes a programmable current source for sensor excitation, a 3-bit programmable-gain amplifier (PGA), a 128-bit internal EEPROM, and four 12-bit DACs. Achieving a total error factor within 1% of the sensor's repeatability errors, the MAX1459 compensates offset, offset temperature coefficient (offset TC), full-span output (FSO), FSO temperature coefficient (FSOTC), and FSO nonlinearity of silicon piezoresistive sensors. The MAX1459 calibrates and compensates first-order temperature errors by adjusting the offset and span of the input signal through digital-to-analog converters (DACs), thereby eliminating quantization noise. The MAX1459 allows temperature compensation via the external sensor, an internal temperature-dependent resistor, or a dedicated external temperature transducer. Accuracies better than 0.5% can be achieved with low-cost external temperature sensors (i.e., silicon transistor), depending on sensor choice. Built-in testability features on the MAX1459 result in the integration of three traditional sensor-manufacturing operations into one automated process: Pretest: Data acquisition of sensor performance under the control of a host test computer. Calibration and compensation: Computation and storage (in an internal EEPROM) of calibration and compensation coefficients computed by the test computer and downloaded to the MAX1459. Final test operation: Verification of transducer calibration and compensation without removal from the pretest socket. Although optimized for use with piezoresistive sensors, the MAX1459 may also be used with other resistive sensors (i.e., accelerometers and strain gauges) with some additional external components.

For custom versions of the MAX1459, see the Customization section at end of data sheet.

+125C 20 SSOP *Dice are tested +25C, DC parameters only. Functional Diagram appears at end of data sheet.


420mA Transmitters Piezoresistive Pressure and Acceleration Industrial Pressure Sensors Load Cells/Wheatstone Bridges Strain Gauges Temperature Sensors

For free samples and the latest literature, visit or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.

Supply Voltage, VDD to +6V All Other Pins...................................(VSS 0.3V) to (VDD + 0.3V) Short-Circuit Duration, FSOTC, OUT, BDRIVE...........Continuous Continuous Power Dissipation (TA +70C) 20-Pin SSOP (derate 8.00mW/C above +70C)..........640mW Operating Temperature Ranges 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.

(VDD = +5V, VSS = +25C, unless otherwise noted.) PARAMETER GENERAL CHARACTERISTICS Supply Voltage Supply Current ANALOG INPUT (PGA) Input Impedance Input-Referred Offset Tempco Amplifier Gain Nonlinearity Output Step Response Common-Mode Rejection Ratio Input-Referred Adjustable Offset Range Input-Referred Adjustable FullSpan Output (FSO) Range ANALOG OUTPUT (PGA) Differential Signal Gain Range Minimum Differential Signal Gain Differential Signal Gain Tempco Output Voltage Swing Output Current Range Output Noise CURRENT SOURCE Bridge Current Range Bridge Voltage Swing Reference Input Voltage Range (ISRC) IBDRIVE VBDRIVE VISRC IBDRIVE 2mA 0.1 VSS + 1.3 VSS VDD - 1.3 VDD mA V Selectable in eight steps TA = TMIN to TMAX TA = TMIN to TMAX No load 10k load VOUT = (VSS 0.25V) to (VDD to 10Hz (gain = 41, source impedance = 5k) VSS + 0.05 VSS 0.25 -0.45 (sink) +41 50 VDD - 0.05 VDD 0.25 0.45 (source) +44 V/V ppm/C V mA VRMS CMRR 63% of final value From VSS to VDD At minimum gain (Note 4) (Note 5) RIN (Notes +40 M V/C %VDD dB mV mV/V VDD IDD RNBIAS = 402k, VDD = 5.0V (Note V mA SYMBOL CONDITIONS MIN TYP MAX UNITS

(VDD = +5V, VSS = +25C, unless otherwise noted.) PARAMETER DAC Resolution Differential Nonlinearity Offset DAC Bit Weight Offset TC DAC Bit Weight FSO DAC Bit Weight FSOTC DAC Bit Weight IRO DAC Resolution DAC Bit Weight FSOTC BUFFER (FSOTC Pin) Output Voltage Swing Current Drive INTERNAL RESISTORS Current Source Reference Resistor FSO Trim Resistor Temperature-Dependent Resistor AUXILIARY OP AMP Input Common-Mode Range Open-Loop Gain Offset Voltage (as unity-gain follower) Output Swing Output Current CMR AV VIN VDD/2 No load -30 VSS 0.05 1 VSS 60 30 VDD - 0.05 VDD V mA RISRC RFTC RTEMP k No load, = 5V VFSOTC V A Input referred, VDD = 5V (Note 3 9 Bits mV/bit DNL VOUT Code VOUT Code VISRC Code VFSOT Code DAC reference = VDD = 5.0V DAC reference = VBDRIVE = 2.5V DAC reference = VDD = 5.0V DAC reference = VBDRIVE = 2.5V SYMBOL CONDITIONS MIN TYP MAX UNITS Bits LSB mV/bit DIGITAL-TO-ANALOG CONVERTERS


Related products with the same datasheet
Some Part number from the same manufacture Maxim Integrated Products
MAX1459CAP 2-wire, 4-20ma Smart Signal Conditioner
MAX145AC +2.7V, Low-Power, 2-Channel, 108ksps, Serial 12-Bit ADCs in 8-Pin Max
MAX146 +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX1460 Low-Power, 16-Bit Smart ADC
MAX1460C +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX1460CCM Low-Power, 16-Bit Smart ADC
MAX1462 MAX1462 Low-Voltage, Low-Power, 16-Bit Smart ADC
MAX1463 MAX1463 Low-Power, Two-channel Sensor Signal Processor
MAX146AC +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX146EVKIT MAX146EVKIT, MAX147EVKIT Evaluation System/evaluation Kits For The MAX146/MAX147
MAX147 +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX1470 MAX1470 315MHz Low-Power, +3V Superheterodyne Receiver
MAX1470EVKIT MAX1470EVKIT Evaluation Kit For The MAX1470
MAX1471 315MHz/434MHz Low-Power, 3V/5V Ask/fsk Superheterodyne Receiver <<<>>><<<>>>The MAX1471 Low-power, CMOS, Superheterodyne, RF Dual-channel Receiver is Designed to Receive Both Amplitude- Shift-keyed (ASK)
MAX1472 MAX1472 300MHz-to-450MHz Low-Power, Crystal-based Ask Transmitter
MAX1472EVKIT MAX1472EVKIT Evaluation Kit For The MAX1472
MAX1473 MAX1473 315MHz/433MHz, Ask, Superheterodyne Receiver With Extended Dynamic Range
MAX1474 MAX1474 Miniature Electronically Trimmable Capacitor
MAX1478 1% Accurate, Digitally Trimmed, Rail-to-rail Sensor Signal Conditioner
MAX1479 300MHz to 450MHz Low-Power, Crystal-based +10dBm Ask/fsk Transmitter <<<>>>The MAX1479 Crystal-referenced Phase-locked-loop (PLL) VHF/uhf Transmitter is Designed to Transmit Ask, Ook, And FSK Data in The 300MHz
MAX147AC +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs

MAX1203BMJP : 5V, 8-Channel, Serial, 12-Bit ADCs With 3V Digital Interface

MAX2371 : MAX2371, MAX2373 Lnas With Step Attenuator And Vga

REF01D : +5V, +10V Precision Voltage References

MAX3660 : Analog CATV Transimpedance Amplifier The MAX3660 high-linearity analog RF transimpedance amplifier (TIA) is intended for passive optical network (PON) video receiver applications. With 66dB? maximum variable gain and integrated uptilt, the MAX3660 provides 23dBmV/channel 1dB at 870MHz (19dBmV/chan

MAX6389XS21D7-T : Sc70, Single/dual Low-voltage, Low-power P Reset Circuits

ICM7218CIQI : 8 Digit LED Display Driver

MAX6446UK31L-T : P Reset Circuits With Long Manual Reset Setup Period The MAX6443MAX6452 low-current microprocessor reset circuits feature single or dual manual reset inputs with an extended setup period. Because of the extended setup period, short switch closures (nuisance resets) are ignored. On all devices,

MAX157AEUA+T : Data Acquisition - Analog To Digital Converter (adc) Integrated Circuit (ics) 2 Single-Ended, Unipolar Tape & Reel (TR) Single Supply; IC ADC 10BIT 108KSPS 2CH 8-UMAX Specifications: Number of Bits: 10 ; Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) ; Data Interface: MICROWIRE, QSPI, Serial, SPI ; Packaging: Tape & Reel (TR) ; Sampling Rate (Per Second): 108k ; Operating Temperature: -40C ~ 85C ; Voltage Supply Source: Single Supply ; Number of

MAX6425UK19+T : Pmic - Supervisor Integrated Circuit (ics) Simple Reset/Power-On Reset Tape & Reel (TR) 1; IC MPU/RESET CIRC 1.90V SOT23-5 Specifications: Output: Open Drain or Open Collector ; Reset: Active Low ; Package / Case: SC-74A, SOT-753 ; Packaging: Tape & Reel (TR) ; Number of Voltages Monitored: 1 ; Reset Timeout: Adjustable/Selectable ; Type: Simple Reset/Power-On Reset ; Voltage - Threshold: 1.9V ; Operating Temperatur

MAX6800UR32D3+T : 3-Pin, Low-Power µP Reset Circuits The MAX6800/MAX6801/MAX6802 microprocessor (µP) supervisory circuits monitor the power supplies in 2.85V to 5.0V µP and digital systems. They increase circuit reliability and reduce cost by eliminating external components and adjustments. These devices perfo

MAX17502GATB+ : DC/DC Switching Converters 60V 1A 600kHz Synch Step-Down Regulator Maxim Integrated MAX17501 / MAX17502 high-efficiency, high-voltage, synchronous step-down DC-DC converters with integrated MOSFETs operate over a 4.5V to 60V input voltage range. MAX17501 delivers output currents up to 500mA at output voltages of 0.9V to 92%VIN while MAX17502 delivers output current

MAX24001TL+T : Maxim 2.5G Burst Mode Laser Xcvr Maxim Integrated MAX24001 / MAX24002 are complete Laser Driver Transmitters and Limiting Amplifier Receivers. MAX24001 is a 2.5Gbps device designed for use within fiber optic modules for FTTx applications. A fully compliant GPON/GEPON module with digital diagnostics can be realized when used with a

0-C     D-L     M-R     S-Z