AS5134-ZSST austriamicrosystems, AS5134-ZSST Datasheet
AS5134-ZSST
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AS5134-ZSST Summary of contents
Page 1
... Wide magnetic field input range: 20 – Wide temperature range: -40ºC to +140ºC Fully automotive qualified to AEC-Q100 Small Pb-free package: SSOP 20 3 Applications The AS5134 is suitable for contactless rotary position sensing, rotary switches (human machine interface), AC/DC motor position control and Brushless DC motor position control Index Commutation ...
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... High Speed Operation ........................................................................................................................................................................ 26 8.4.1 Propagation Delay ..................................................................................................................................................................... 26 8.4.2 ADC Sampling Rate................................................................................................................................................................... 26 8.4.3 Chip Internal Lowpass Filtering ................................................................................................................................................. 26 8.4.4 Digital Readout Rate.................................................................................................................................................................. 26 8.4.5 Total Propagation Delay of the AS5134 .................................................................................................................................... 26 8.4.6 Low Power Mode ....................................................................................................................................................................... 27 8.5 Magnet Diameter and Vertical Distance ............................................................................................................................................. 28 8.5.1 The Linear Range ...................................................................................................................................................................... 28 8.5.2 Magnet Thickness...................................................................................................................................................................... 30 8 ...
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... AS5134 Data Sheet - Package Drawings and Markings ........................................................................................................................................... 9.1 Recommended PCB Footprint............................................................................................................................................................ 38 10 Ordering Information............................................................................................................................................................. www.austriamicrosystems.com/AS5134 Revision 1. ...
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... VSS PWM 6 VDD 7 Test Coil 8 DDCLK 9 DIO Index 16 TB0 17 TB1 18 TB2 19 TB3 20 www.austriamicrosystems.com/AS5134 1 20 TB3 VSS 2 19 TB2 TB1 TB0 Index DIO 10 U Programming voltage input, must be left open in normal operation. Maximum load = 20pF (except during programming) Supply ground Chip select output for 2-wire mode and Daisy Chain cascading Chip select input for 3-wire mode Select between 2-wire (C2 → ...
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... Table 2. Absolute Maximum Ratings Parameter Supply voltage Input Pin Voltage Input Current (latch up immunity) ESD Package Thermal Resistance SL Package Thermal Resistance ML Storage Temperature Soldering conditions, Body temperature (Pb-free package) Humidity non-condensing www.austriamicrosystems.com/AS5134 Electrical Characteristics on page 6 Min Max Units -0 VSS-0.5 VDD V -100 ...
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... PWM f PWM frequency PWM Programming Parameters V Programming Voltage PROG I Programming Current PROG www.austriamicrosystems.com/AS5134 , unless otherwise noted. SS Conditions Min 4.5 No load on outputs. Supply current can be reduced by using stronger magnets. Low Power Mode Startup from zero Startup from Low Power mode Step rate of tracking ADC; ...
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... High level output voltage V OH Low level output voltage V OL Capacitive load CL IO Tristate leakage current Z www.austriamicrosystems.com/AS5134 Conditions During programming Timing is internally generated During analog readback mode at pin Prog sens = 00 (default; high sensitivity) sens = 01 sens = 10 sens = 11 (low sensitivity) CMOS Inputs: DDCLK, CS, DIO, C2 ...
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... Bus floating time, t10 Negative edge of chip select to float bus Timeout period in 2-wire mode (from t TO rising edge of DCLK) t Clock Timing CLK www.austriamicrosystems.com/AS5134 Conditions Min 3-Wire Interface Normal operation During OTP programming 200 2-Wire Interface Normal operation 0.1 During OTP programming ...
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... Data Sheet - Detailed Description Figure 3. Typical Arrangement of AS5134 and Magnet 7.1 Connecting the AS5134 The AS5134 can be connected to an external controller in several ways as listed below: Serial 3-wire R/W connection Serial 3-wire Read-only connection Serial 2-Wire connection (R/W Mode) Serial 2-Wire Differential SSI connection ...
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... Serial 3-Wire R/W Connection In this mode, the AS5134 is connected to the external controller via three signals: Chip Select (CS), Clock (DCLK) inputs and bi-directional DIO (Data In/Out) output. The controller sends commands over the DIO pin at the beginning of each data transmission sequence, such as reading the angle or putting the AS5134 in and out of the reduced power modes ...
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... AS5134, both the microcontroller and the AS5134 are configured as digital inputs during this phase. Therefore, a pull-down resistor must be added to make sure that the AS5134 reads “00000” as the first 5 bits, which sets the Read_Angle command ...
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... Serial 2-Wire Connection (R/W Mode) By connecting the configuration input C2 to VDD, the AS5134 is configured to 2-wire data transmission mode. Only Clock (DCLK) and Data (DIO) signals are required. A Chip Select (CS) signal is automatically generated by the DX output, when a time-out of DCLK occurs (typ. 20µs). ...
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... Note: This type of transmission is read-only. Figure 7. 2-Wire SSI Read-only Mode +5V VDD VDD Output Input VSS VSS 2 1 DCLK DI Refer to Table 6 on page 11 for information on 2-or 3-wire Read-only Serial Bit Sequence (21bit read). www.austriamicrosystems.com/AS5134 MAX 3081 or similar D+ D- DCLK DCLK DIO ...
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... This type of configuration is especially useful for remote sensors. Ultra Low Power Mode is not possible in this configuration, as there is no bi-directional data transmission. If the AS5134 angular data is invalid, the PWM output will remain at low state. Pins that are not shown may be left open. ...
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... Figure 9) or active. The lower the bandwidth of the filter, the less ripple of the analog output can be achieved. If the AS5134 angular data is invalid, the PWM output will remain at low state and thus the analog output will be 0V. Pins that are not shown may be left open. ...
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... Remark: Reset for the digital interface: 3 wire mode → via chip select 2 wire mode → via timeout Port Symbol chip select CS DCLK DCLK www.austriamicrosystems.com/AS5134 Serial Synchronous Interface (SSI) on page 180 240 300 0 90 120 150 180 BLDC Pole Pairs : 1 → ...
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... CS_INT(3) DIO CS CLK www.austriamicrosystems.com/AS5134 Command and data information over one single line. The first bit of the command defines a read or write access. This port enables the daisy chain configuration of several devices. Three wire mode: Indicates the end of an interface cycle. Dx can be used as the chip select signal for the next device in the chain ...
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... Normal mode is used for normal operations, whereas extended mode is for accessing the OTP. Table 9. Commands of the SSI in Normal Mode # cmd bin mode 15 WRITE 23 10111 write LP CONFIG 1 SET MT 20 10100 write COUNTER www.austriamicrosystems.com/AS5134 Data(1) CMD(2) Data( D15 D14 t14_3 DX(1) DX( DIO DIO CLK CLK C2 ...
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... SM_RES: State machine reset of the digital part of the device (soft reset). EN PROG: Enables the access to the OTP register in Extended Mode. WRITE CONFIG activates the sleep mode of the AS5134. The power consumption is significantly reduced returns to normal operation mode. During sleep mode, the lock_adc bit in command 0 is LO. ...
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... Table 11. Redundancy Addressing R_a R_a R_a R_a R_bi Sensi Sensi tivity ABI tivity www.austriamicrosystems.com/AS5134 Digital interface at extended mode Factory Settings ..32 31 ..36 ..27 ..25 ..22 tst tst tst tst tst tst tst tst tst tst tst tst tst tst tst tst (see Figure 17 ...
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... AS5134 Data Sheet - Table 11. Redundancy Addressing R_a R_a R_a R_a R_bi Sensi Sensi tivity ABI tivity www.austriamicrosystems.com/AS5134 ABI Revision 1. ...
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... This programming option allows the user to match the vertical distance of the magnet with the optimum magnetic field range of the AS5134 by setting the sensitivity level. The 2-bit user programmable sensitivity setting can be applied both temporarily (command WRITE OTP, #31) or permanently (command PROG OTP, #25). ...
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... OTP register (starting with D61). A voltage of <500mV indicates a correctly programmed bit (“1”) while a voltage level between 2.2V and 3.5V indicates a correctly unprogrammed bit (“0”). Any voltage level in between indicates incorrect programming. www.austriamicrosystems.com/AS5134 Special Case V ...
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... Lock = 1 AGC = >00H and < 2FH Note: The angle signal may also be valid (Lock = 1), when the AGC is out of range (00H or 2FH), but the accuracy of the AS5134 may be reduced due to the out of range condition of the magnetic field strength. www.austriamicrosystems.com/AS5134 ...
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... Data Sheet - 8.2.2 Magnetic Field Strength Indicators The AS5134 is not only able to sense the angle of a rotating magnet, it can also measure the magnetic field strength (and hence the vertical distance) of the magnet. This additional feature can be used for several purposes safety feature by constantly monitoring the presence and proper vertical distance of the magnet - as a state-of-health indicator, e ...
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... High Speed Operation The AS5134 is using a fast tracking ADC (TADC) to determine the angle of the magnet. The TADC is tracking the angle of the magnet with cycle time of 2µs (typ. 1.4). Once the TADC is synchronized with the angle, it sets the LOCK bit in the status register. In worst case, usually at start-up, the TADC requires up to 255 steps (255 * 2µ ...
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... In Low Power Mode, the AS5134 is inactive. The last state (for e.g. the angle, AGC value, etc.) is frozen and the chip starts from this frozen state when it resumes active operation. This method provides much faster start-up than a “cold start” from zero. If the AS5134 is cycled between active and reduced current mode, a substantial reduction of the average supply current can be achieved. The minimum dwelling time is < ...
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... Reducing Power Supply Peak Currents. when the AS5134 is toggled between active and reduced power mode. R1 must be chosen such that it can maintain a VDD voltage of 4.5 – 5.5V under all conditions, especially during long active periods when the charge on C1 has expired. C1 should be chosen such that it can support peak currents during the active operation period ...
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... Figure 20. Vertical Magnetic Field across the center of a Cylindrical Magnet www.austriamicrosystems.com/AS5134 Large Diameter Magnet (>6mm) larger horizontal misalignment area -- weaker differential signal = poorer signal / noise ratio, Bz; 6mm magnet @ y=0; z=1mm ...
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... This range lies between 45 and 75mT or between 20 and 80mT, depending on the encoder product. Linear position sensors are more sensitive as they use weaker magnets. The allowed magnetic range lies typically between 5 and 60mT. www.austriamicrosystems.com/AS5134 d= 6mm x h= 2.5mm ref. magnet: h/d = 0.42 Rel ...
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... The total misalignment area of the graph covers a square of 2x2 mm (79x79mil) with a step size of 200µm. The gap between surface and magnet is z=500µm. Figure 23. 3D Graph Displaying Non-Linearity Over XY-Misalignment Linearity Error over XY-misalignment [°] -1000 -600 -200 200 Y 600 www.austriamicrosystems.com/AS5134 (see Figure 20). Figure 23 shows an example of a 3D-graph displaying non-linearity over XY- -200 -600 1000 -1000 Revision 1.13 3-3 ...
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... If the magnet is mounted in non-magnetic material, such as plastic or diamagnetic material, such as copper, the magnetic field distribution is not disturbed. Even paramagnetic material, such as aluminium may be used. The magnet may be mounted directly in the shaft Note: Stainless steel may also be used, but some grades are magnetic. Therefore, steel with magnetic grades should be avoided. www.austriamicrosystems.com/AS5134 Revision 1.13 (see Figure 25) ...
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... If the magnet has to be mounted inside a magnetic shaft, a possible solution is to place a non-magnetic spacer between shaft and magnet, as shown in Figure 27. While the magnetic field is rather distorted towards the shaft, there are still adequate field lines available towards the sensor IC. The distortion remains reasonably low. www.austriamicrosystems.com/AS5134 Revision 1. ...
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... The linear range decreases with airgap; Best performance is achieved at shorter airgaps. The ideal vertical distance range can be determined by using magnetic range indicators provided by the encoder ICs. These indicators are named MagInc, MagDec, MagRngn, or similar, depending on product. 8.6 AS5134 Parameter and Features List Table 13. Parameter and Features List Parameter ...
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... BLDC pole pair options Hysteresis on BLDC outputs Switching positions www.austriamicrosystems.com/AS5134 AS5134 2µs / step. 360º angle range in all modes. Minimum pos. pulse width (at 0º) = 16µs (8 LSB) Minimum neg. pulse width (at 359º) = 16µs (8 LSB) Pulse width at 0º = 16µs, Pause = 734µs Pulse width at 1º ...
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... Incremental Outputs Incremental modes Step size Incremental Hysteresis OTP Programming OTP programming technology OTP programming options OTP programming method OTP programming verification www.austriamicrosystems.com/AS5134 AS5134 modes: Quad AB with Index (2x90 ppr), Step/direction (1x180 ppr) Fixed pulse width (360ppr) 1º 0-3LSB; 2LSB (default) ...
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... BSC 7.8 8.2 0.291 4º 8º 0º 0.75 0.95 0.022 0.715 0.815 0.024 Revision 1. AYWWIZZ AS5134 inch Typ Max 0.079 0.069 0.073 0.012 0.010 0.283 0.295 0.209 0.220 0.0256 BSC 0.307 0.323 4º 8º 0.030 0.037 0.028 0.032 ...
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... AS5134 Data Sheet - 9.1 Recommended PCB Footprint Figure 29. PCB Footprint Table 15. Recommended Footprint Data Symbol www.austriamicrosystems.com/AS5134 mm 9.02 6.16 0.46 0.65 6.31 Revision 1.13 inch 0.355 0.242 0.018 0.025 0.248 ...
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... Sep 25, 2009 1.13 Jan 27, 2010 Note: Typos may not be explicitly mentioned under revision history. www.austriamicrosystems.com/AS5134 Owner Added Extended Operation Mode: Timing of Analog Readout (page 24) Updated Connecting the AS5134 (page 9) Updated Key Features (page 1), apg Outputs (page 7) Added Daisy Chain Mode (page 16) Added ...
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... Ordering Information The devices are available as the standard products shown in Table 16. Ordering Information Ordering Code AS5134-ZSST 360 Step Programmable High Speed Magnetic Rotary Encoder Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at http://www ...