MLX91207LDC-CAA-007-RE Melexis

MLX91207 High Speed Hall Sensor IC Datasheet 1. Features and Benefits 2. Application Examples Current sensor applications Programmable high speed Hall sensor - Over current detection circuit Wide bandwidth, short response time 8s - Inverter Application HEV &EV Programmable linear transfer characteristic Selectable analog ratiometric output - AC/DC converters Measurement range from 15mT to 400mT - Battery management Thermometer output Position sensor application 17 bit ID number Single die SOIC8 package RoHS compliant Lead free component, suitable for lead free soldering profile 260 C Low thermal Drift (Gain and Offset) Ordering Code Product Temperature Code Package Code Ordering Option Packing Comment Code Code form Code MLX91207 L (-40C to 150C) DC (SOIC) CAA-005 TU (Tube) 15-45mV/mT (25mV/mT) MLX91207 L (-40C to 150C) DC (SOIC) CAA-005 RE (Reel) 15-45mV/mT (25mV/mT) MLX91207 L (-40C to 150C) DC (SOIC) CAA-007 TU 5-20mV/mT (10mV/mT) MLX91207 L (-40C to 150C) DC (SOIC) CAA-007 RE 5-20mV/mT (10mV/mT) (1) MLX91207 L (-40C to 150C) DC (SOIC) CAA-015 TU 15-45mV/mT (25mV/mT) (1) MLX91207 L (-40C to 150C) DC (SOIC) CAA-015 RE 15-45mV/mT (25mV/mT) (1) Ratiometry is disabled by default for this version Ordering example : MLX91207-LDC-CAA-007-TU 3. Functional Diagram 3.3V Voltage 3.3V core ana VDIG Regulator & TEMPOUT Thermometer 3.3V dig Rev.Pol. VDD protection VSS Oscillator Clock 1 MHz Generator fi = 250kHz or 25kHz 5V ratiometric fs = 1MHz fs = 1MHz Intermediate data rate fo = 250 kHz or 25 kHz output Input data rate Output data rate 4- Phase Integrating Output DIDO Clamping OUT LPF Switch P2P Buffer S&H Box G = 15 239 G = 0.4 1 G = 4 Hall Bias 3 bits 10 bits 2 bits 6 bits Digital 12 bits Ratiometry RG 2:0 PLATEPOL FILTCODE 1:0 TC1ST 6:0 FG 9:0 XA 11:0 CLAMPLOW 2:0 TC2ND COLD 4:0 OFFSETDRIFT HOT 5:0 CLAMPHIGH 2:0 TC2ND HOT 4:0 OFFSETDRIFT COLD 5:0 DIGITAL + EEPROM HallSensors Sensitivity Offset Polarity Rough Gain Fine Gain Bandwidth Voq adjust selection trimming Compensation selection Figure 1: Block diagram REVISION 16 - APRIL/12 39010091207 PAGE 1 OF 20 DACMLX91207 High Speed Hall Sensor IC Datasheet 4. General Description The MLX91207 is a monolithic programmable hall sensor IC, which provides a high speed analog output signal proportional to the external applied flux density. The sensor is ideally suitable for current sensing application and features an additional thermometer output. Moreover, the sensor can be integrated in position sensing applications where fast response time is required. The transfer characteristics of the MLX91207 are fully programmable (offset, gain, clamping levels, diagnostic functions). The full analog chain features a fast response time and allows use of the sensor for applications where a very fast response time < 10 sec is required. In the typical application the sensor is used in combination with a ring shaped soft ferromagnetic core. The Hall-IC is placed in a small air gap and the current conductor is passed through the inner part of the ferromagnetic ring. The ferromagnetic ring concentrates and amplifies the magnetic flux on the Hall-Sensor IC which generates an output voltage proportional to the current. Figure 2 shows a typical sensor application for a contact-less current measurement. Figure 2: Typical application of MLX91207 REVISION 16 - APRIL/12 39010091207 PAGE 2 OF 20