AS5215 AB austriamicrosystems, AS5215 AB Datasheet
AS5215 AB
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AS5215 AB Summary of contents
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... SSI Interface DIO Hall Array & Frontend Amplifier Note: This Block Diagram presents only one die. www.austriamicrosystems.com/AS5215 2 Key Features Contactless angular position encoding High precision analog output Buffered Sine and Cosine signals SSI Interface Low power mode Two programmable output modes: Differential or Single ended Wide magnetic field input range: 20 – ...
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... Waveform – Digital Interface at Normal Operation Mode................................................................................................................... 18 8.5 Waveform – Digital Interface at Extended Mode ................................................................................................................................ 18 8.6 Waveform – Digital Interface at Analog Readback of the Zener Diodes ............................................................................................ 19 8.7 EasyZapp OTP Content ..................................................................................................................................................................... 19 8.8 Analog Sin/Cos Outputs with External Interpolator ............................................................................................................................ 20 8.9 OTP Programming.............................................................................................................................................................................. 21 9 Package Drawings and Markings ........................................................................................................................................... 10 Ordering Information............................................................................................................................................................. www.austriamicrosystems.com/AS5215 Revision 1 ...
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... Figure 2. Pin Assignments (Top View DIO_1 2 DIO_2 3 TC_1 4 TC_2 5 A_TST_1 6 A_TST_2 7 PROG_1 8 PROG_2 9 10 4.1 Pin Descriptions Table 1. Pin Descriptions Pin Name DIO_1 DIO_2 TC_1 TC_2 A_TST_1 A_TST_2 PROG_1 PROG_2 www.austriamicrosystems.com/AS5215 AS5215 COSN_2 / COSP_2 / CM_COS_2 17 COSP_2 / COSN_2 Pin Number 1 Data I/O for digital interface ...
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... COSN_2 / COSP_2 / CM_COS_2 VDD_1 VDD_2 DCLK_1 DCLK_2 CS_1 CS_2 www.austriamicrosystems.com/AS5215 Pin Number 9 Supply ground 10 Switchable buffered analog output 11 Switchable buffered analog or common mode output 12 Switchable buffered analog output 13 Switchable buffered analog or common mode output 14 Switchable buffered analog output 15 Switchable buffered analog or common mode output ...
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... Parameter Supply voltage ( Input pin voltage (V_in) Input current (latchup immunity), I_scr Electrostatic discharge (ESD) Total power dissipation (P ) tot Package thermal resistance (Θ_JA) Storage temperature (T_strg) Package body temperature (T_body) Humidity non-condensing www.austriamicrosystems.com/AS5215 Electrical Characteristics on page 6 Min Max Units -0 0 -100 ...
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... Current Consumption t Power up time power_on t Propagation delay prop M Magnetic Sensitivity V Analog output range out www.austriamicrosystems.com/AS5215 Condition Condition Condition 200 – 800 Gauss Max 30000 RPM Condition Max value derived at maximum I_H (Hall Bias Current) Note: For single die only. -40 to 150º ...
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... Hold time data bit at write access t12 Data valid after positive edge of DCLK Bus floating time t13_3 Negative edge of chip select to float bus Remark: The digital interface will be reset during the low phase of the CS signal. www.austriamicrosystems.com/AS5215 Condition Min -40 to 150º 0.294 ...
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... Following the poles towards the center of the magnet, the Bz field decreases very linearly within a radius of ~1.6mm. This linear range is the operating range of the magnet with respect to the Hall sensor array on the chip. For best performance, the Hall elements should always be within this linear range. www.austriamicrosystems.com/AS5215 www.austriamicrosystems.com → Magnetic Rotary Encoders Revision 1.9 → Magnet (see Figure ...
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... Hall elements are located on the chip at a circle with a radius of 1mm. Since the difference between two opposite Hall sensors is measured, there will be no difference in signal amplitude when the magnet is perfectly centered or if the magnet is misaligned in any direction as long as all Hall elements stay within the linear range. www.austriamicrosystems.com/AS5215 BZ; 6mm magnet @ Z=1mm area of X- Y-misalignment from cen- ter: ± ...
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... Figure 5. Vertical Magnetic Field Across the Center of a Cylindrical Magnet www.austriamicrosystems.com/AS5215 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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... It is possible to get 40% or more signal amplitude by using thicker magnets. However, the gain in signal amplitude becomes less significant for h/ d ratios >~1.3. Therefore, the recommended magnet thickness for a 6mm diameter magnet is between 2.5 and ~8 mm. www.austriamicrosystems.com/AS5215 d= 6mm x h= 2.5mm ref. magnet: h ...
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... Magnetic materials in the vicinity of the magnet will distort or weaken the magnetic field being picked up by the Hall elements and cause additional errors in the angular output of the sensor. Figure 8. Magnetic Field Lines in Air Figure 8 shows the ideal case with the magnet in air. No magnetic materials are anywhere nearby. www.austriamicrosystems.com/AS5215 0 (see Figure 5). Revision 1.9 360º ...
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... Figure 10. Magnetic Field Lines in Iron Shaft If the magnet is mounted in a ferromagnetic material, such as iron, most of the field lines are attracted by the iron and flow inside the metal shaft (see Figure 10). The magnet is weakened substantially. This configuration should be avoided! www.austriamicrosystems.com/AS5215 Revision 1.9 (see Figure 9 ...
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... Large diameter magnets (>6 mm Ø) have a wider linear range and allow a wider lateral misalignment. The flatter slope requires shorter axial distances. 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. www.austriamicrosystems.com/AS5215 Revision 1 ...
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... Interface Modes Normal read operation mode Extended read operation mode Normal write operation mode Extended write operation mode www.austriamicrosystems.com/AS5215 Indicates the start of a new access cycle to the device → reset of the digital interface Clock source for the communication over the digital interface ...
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... Common mode voltage output enabled at SINN / CM pin (0...differential, 1...common) Common mode voltage output enabled at COSN / CM pin (0...differential, 1...common) cm_cos PGA gain setting (influences overall magnetic sensitivity), 2bit gain Output DC offset (0…1.5V, 1…2.5V) dc_offset Hall bias setting (influences overall magnetic sensitivity), 6bit Hall_b www.austriamicrosystems.com/AS5215 analog_sig gen_rst ...
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... The amplitude of the output signal is programmable via sensitivity (6bit) and/or gain (2bit) settings Figure 13. Sensitivity Gain Settings - Sensitivity [mV/mT] Magnetic Sensitivity vs. OTP Hall Current & PGA Gain Setting www.austriamicrosystems.com/AS5215 Hall Current OTP setting (6 bits Hall Current OTP setting (6 bits) Revision 1.9 M_PGA_00 M_PGA_01 M_PGA_10 ...
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... In the extended mode, the digital interface needs four clocks for one data bit. During this time, the device is able to handle internal signals for special access (e.g. the easy zap interface). Figure 15. Digital Interface at Extended Mode CMD_PHASE DCLK t1_3 CS t2_3 DIO CMD4 CMD2 CMD3 CMD1 t3 t4 DIO DIO www.austriamicrosystems.com/AS5215 DATA_PHASE t5 CMD2 CMD1 CMD0 t7 t6 D15 t11 D15 D14 DATA_PHASE t7 t5 CMD0 t8 ...
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... Output DC offset setting 6 user Programmable gain amplifier setting 8 user Set in production test 13 austriamicrosystems Inverts SIN and COS channel before the 11 user PGA for inverted output function Common mode voltage output enabled at SINN / 10 user CM pin Common mode voltage output enabled at COSN / ...
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... Through the programming of one bit, you have the possibility to choose between the analog Sine and Cosine outputs (SINP, COSP) and their inverted signals (SINN, COSN). Furthermore, by programming the bits <9:10> you can enable the common mode output signals of SIN and COS. The DC bias voltage is 1.5 or 2.5 V. www.austriamicrosystems.com/AS5215 VDD PROG SINP_1/SINN_1 ...
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... Parameter V Supply Voltage DD GND Ground level V_zapp Programming Voltage T_zapp Temperature f_clk CLK Frequency Remark: For normal operation, after programming, apply 100k pull up resistor at PROG pin! www.austriamicrosystems.com/AS5215 Output CS_1 DCLK_1 Output I/O DIO_1 Output CS_2 Output DCLK_2 I/O DIO_2 8.0 - 8.5V ...
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... Figure 19. 32-pin QFN (7x7mm) Package AS5215 17919-001 AYWWIZZ Note: The distance between both dies is 150µm. Table 13. Package Dimensions Symbol Min 4.18 E1 4.18 L 0. 0.80 A1 www.austriamicrosystems.com/AS5215 Typ Max Min 7 BSC 7 BSC 4.28 4.38 0.165 4.28 4.38 0.165 0.55 0.65 0.018 0.30 0.35 ...
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... Dec 11, 2009 1.8 Dec 15, 2009 Jan 27, 2010 1.9 Feb 10, 2010 Mar 19, 2010 Note: Typos may not be explicitly mentioned under revision history. www.austriamicrosystems.com/AS5215 Owner Initial revision Redundancy Coding topic deleted. Updated Key Features, Table 1 Figure 17. Updated min, typ, max values for ‘Power up time’ parameter in ...
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... AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application ...