mlx90313 ETC-unknow, mlx90313 Datasheet
mlx90313
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mlx90313 Summary of contents
Page 1
... Other types of sensors can also be used in various configurations. Sensors that can be used include pressure sensors, strain gauges, acceleration sensors etc. Tempout The amplifier chains in MLX90313 are programmable in very broad ranges of gain. Both chains consist of high performance, chopper-stabilized amplifiers, providing excellent noise performance and low offset. The I/O ...
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... Common mode input range CMIR Common mode rejection ratio CMRR Power supply rejection ratio PSSR TINP bias current Itpb Available gain settings Atemp MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface 125 4.5V to 80V (unless otherwise specified) DD Test Conditions ...
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... Differential non-linearity DNL Integral non-linearity INL *Rsens is the impedance of the sensor connected between IRINP and IRINN for the IR-chain amplifier. **Icref is the current flowing out of pin CREF MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface Test Conditions Min Typ bias current enabled -6 ...
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... Other types of sensors can also be used in various configurations. Sensors that can be used include pressure sensors, strain gauges, acceleration sensors etc. The amplifier chains in MLX90313 are programmable in very broad ranges of gain, between 50 and 12000 for the IR-chain and between 1 and 120 for the Temp-chain. Both chains consist of high performance, chopper-stabilized amplifiers, providing excellent noise performance and low offset ...
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... TSTCLK Clock for test mode; leave open 17 SCLK SPI clock input 18 SDOUT SPI data output 19 CSB SPI chip select active low 20 TEMPOUT Temp-chain amplifier output MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface TINP 1 20 TEMPOUT TINN 2 19 CSB IRINP 3 18 ...
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... IR temperature in PWM format. The pin is protected for over-voltage and can withstand 16V. SDIN Serial data input pin for the SPI. Data is accepted on the rising edge of the serial data clock (SCLK) SDOUT MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface REL1 Tambient or ...
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... VDD can also be used to supply the chip directly with an external 5V regulated supply. TEMPOUT TEMPOUT analog output/Comparator output pin. This pin can be configured as analog output of the MLX90313 Programmable IR sensor Interface 3901090313 MLX90313 Programmable IR Sensor Interface Page 7 Rev 1 ...
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... The driver can source at least 1mA and sink at least external load. If the capacitive load on this pin exceeds 50pF, the load should be de-coupled by means of a series resistor. The pin is also output for linearised Tambient in PWM mode. The pin is protected from over-voltage and can withstand 16V MLX90313 Programmable IR sensor Interface 3901090313 MLX90313 ...
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... ADC. The reference voltages for ADC and DAC are also derived from the band-gap. The DAC reference is available at pin VREFP. The MLX90313 DAC reference voltage can be programmed on chip to one of the following values: 2, 2.5, 3, 3.5, 4 and 4.5 V. Depending on the customer application Melexis can program the linearised analog outputs for object and ambient temperatures providing absolute voltage/temperature dependence ...
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... Temp-amplifier chain MLX90313 is available with gain settings for the Temp-amplifier ranging from 5 to 50. The gain can be selected by setting the appropriate bits of the ‘Temp gain and current control’-register (EEPROM address 02h) according to the table below ...
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... Analog-to-Digital Converter (ADC) MLX90313 contains a 12-bit internal analog to digital converter. Real 12 bit conversion is achieved by a fully differential signal path of the converter. The input amplifier of the ADC has a fixed gain of 3. Automatic calibration is implemented in the background, which allows precise conversion in a very wide temperature range ...
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... The regulator for the VREFP voltage can be stopped and an external reference voltage can be forced and used from the D/A. The regulator for DAC reference voltage can also be stopped (bit ENDACREF=0) when DAC is not in use. This will save some supply current. MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface ...
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... Threshold Rel1 input 11b PWM out REL1 is an open drain relay driver output controlled by the on-chip comparator circuitry. The available configurations are described in the section on the comparator circuitry. MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface DAC Tout DAC configuration ...
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... Digital Section The digital unit on board of MLX90313 realizes all functions for control, configuration, measurements and linearisation. It contains several registers, ALU and control logic. All functions of the ASIC are hardware fixed and controlled by different state machines, which execute in sequence all procedures necessary for normal chip operation ...
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... Write access: Directly to internal register in test mode. To EEprom if WP-register is correctly set. IRGAIN2 bit functions Bit POR val AGNDC [3:0] X 0000-1111 SELDR [2:0] X 000 X 001 X 010 X 011 X MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface B13 B12 B11 ENLN GCI7 GCI6 GCI0 AGNDC1 AGNDC0 SELDR2 RSEL0 IRSEL2 ...
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... EEWREN and TESTMODE are write protected. Their values can be set only with writing the appropriate data in ‘Test’ and ‘WP’ registers. These bits are flags which indicate the system operation MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface ...
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... Write access: Only in test mode for both writing directly to internal registers and writing to Eeprom if the WP register is correctly set. LPF Read access: No. The data is accessible for read via SPI only from eeprom address 07h. MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface Function ...
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... OVL: Underflow flag for Tambient measurement, Ta<Tamin, D[11:0] set to 000h FE: Fatal Error in eeprom. Res Not used, always zero. MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface Function Refer to ADC interface setting Enable offset measurement of both IR & Temp channels. Disable offset measurement of both IR &Temp channels. ...
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... TOS Read access: Directly from internal register. Write access: Directly to internal register in test mode. This register keeps the offset of the Temp amplifier. Each measurement from Temp amplifier will be compensated with this offset. MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface ...
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... X b 1100101b B[6:0] 0000000b any other * The addresses 00-07h and 79-7Fh will be still protected. Write access here requires also ‘Test mode’. MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface Function Forces chip in test mode Normal mode (default) Function Enables write access to Eeprom* ...
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... Eeprom Description MLX90313 contains 128 x 16 EEPROM memory. The memory can be accessed through the serial interface. The 11 most significant bits are data bits and the 5 less significant bits are control bits used for the Error Check and Correction system (ECC). After POR the ASIC reads the full eeprom contents, checks it and corrects the single errors (1 wrong bit per address). If higher order error is discovered then the bit ‘ ...
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... The bit definitions in the eeprom words are: Pos name D10 The hamming bits are calculated as follows P(D0,D1,D3,D4,D6,D8,D10) MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface B14 B13 B12 B11 ENDAC ENLN GCI7 GCI6 GCI1 GCI0 ...
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... K = P(D10,D9,D8,D7,D6,D5,D4,D3,D2,D1,D0,H4,H3,H2,H1) Note :P is parity over the noted data bits. Parity the number of ones is odd. When reading eeprom addresses, the numerical value can be found by simply dividing the returned data by 32. MLX90313 Programmable IR sensor Interface 3901090313 MLX90313 Programmable IR Sensor Interface Page 23 Rev 1.0 21-July-2001 ...
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... Each of this operation is controlled from the main state machine. The sequence and control of all these state machines is controlled from main state machine. The normal flow of the procedure is show on the diagram below. POR MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface ECC ...
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... DAC and PWM (Tobject-register, address 09h). The register can also be read digitally by means of the SPI. The result of the linearisation is stored as the 12 MSB’s of the Tobject-register (or IROUT-register). The MLX90313 Programmable IR sensor Interface 3901090313 MLX90313 ...
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... Comparators and relay output MLX90313 contains two programmable 12 bit digital comparators. For each circuit the target signal, the threshold and hysteresis can be programmed in different configurations, according to the table below. The principle of operation is shown in the following schematics. The threshold and hysteresis values are stored in eeprom, the control bits are part of the configuration register ...
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... After the temperature data is updated in TOUT and IROUT registers (the current Ta&To are calculated) the main state machine will enable the comparator functions of the chip if one of them is enabled. Threshold data for both outputs is stored in addresses 73h (for Comp1) and 74h (for Rel1) in eeprom. MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface ...
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... T 8 Serial Interface Protocol The digital interface implemented in MLX90313 is SPI compatible. It can be used to access the on-chip EEPROM and all internal registers. The chip will always work as a slave device. The format of any MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface T ...
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... Every write command starts with a high to low transition of CS and ends by a low to high transition of CS after 32 periods of the serial data clock (SCLK). MLX90313 reads the data present on SDI on the rising edge of the clock. With a delay of 8 periods of the serial clock, the SPI will repeat the opcode, address and the first 8 bits of data on pin SDO ...
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... The operation code is the first series of 8bits in a command, C[7:0] in the figure on the protocol above. Below table summarizes the operations available in MLX90313. Operation Codes mnem. C[7: ...
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... Both ambient and object temperatures can be read continously by the microprocessor using the SPI interface. For more application examples, take a look at our MLX90601 Infrared thermometer module, which incorporates a MLX90247 thermopile sensor and the MLX90313 IR sensor interface. MLX90313 Programmable IR sensor Interface 3901090313 ...
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... Support Tools In a short time Melexis will provide a demo board which can demonstrate all MLX90313’s features. This will come with software which allows easy configuration of the MLX90313. Please have a look at www.melexis.com for latest info. ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). ...
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... PTC (positive thermal coefficient) type. The ones that decrease their resistance with rising temperature we call NTC (negative thermal coefficient) type. The MLX90313 can work with both types. Tobject, To and commonly used terms in infrared thermometry. It refers to the temperature of the Target Temperature target, at which the IR sensor is “ ...
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... Melexis reserves the right to periodically make modifications to product specifications. The information included herein is believed to be accurate and reliable. However, Melexis assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. MLX90313 Programmable IR sensor Interface 3901090313 MLX90313 ...
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... Physical Characteristics 0.50 0.33 For the latest version of this document our website at: Or for additional information contact Melexis Direct: Europe and Japan: Phone: + E-mail: sales_europe@melexis.com MLX90313 Programmable IR sensor Interface 3901090313 Programmable IR Sensor Interface 1.27 Notes: 1. All dimensions in millimeters. 12.99 12.70 0.290 0.127 www.melexis.com ...