TLE4801
The Infineon TLE4801 is an inductive sensor IC designed for angular position sensing, primarily for automotive applications such as steering torque and steering angle sensors, pedal sensing, chassis height, and active suspension systems[cite: 14, 15, 16, 17, 18, 19]. It operates on the eddy current method, sensing the position of a metallic target over PCB-printed coils[cite: 29, 30]. The device incorporates a digital signal processing (DSP) unit for signal compensation, angle, and torque calculations[cite: 31]. The TLE4801 is available with SENT (SAE J2716-2016) and SPC interfaces, offering flexibility for various use cases[cite: 9, 32, 33].
Key features of the TLE4801 include inductive-based measurement, angle measurements, and computed torque information from two internally processed angles[cite: 6, 7]. It is intrinsically robust to stray fields according to ISO 11452-8:2015 [cite: 7] and is an ISO 26262:2018 Safety Element out of Context for safety requirements up to ASIL D[cite: 8]. The sensor comes in a PG-TSSOP-16 SMD package and is rated for an ambient temperature range of -40°C to 150°C[cite: 10]. It also features overvoltage and reverse polarity protection, integrated memory for calibration and configuration, and is RoHS compliant and halogen-free[cite: 10, 11, 12]. The product validation is done according to AEC-Q100, Grade 0, qualifying it for automotive applications[cite: 21].
Product Parameters:
Product Type: TLE4801S16-S0000, TLE4801C16-S0000 [cite: 34]
Package: PG-TSSOP-16 [cite: 10, 34]
Marking: 4801S, 4801C [cite: 34]
Ordering Code: SP006068552, SP006068554 [cite: 34]
Maximum supply voltage ($V_{DD_max}$): -18V to 18V (max. 40h) [cite: 150]
Maximum voltage OUT ($V_{OUT_max}$): -18V to 18V (max. 40h) [cite: 150]
Maximum voltage on Rx & Tx ($V_{RxTx_max}$): -0.3V to 5.5V (max. 40h) [cite: 150]
Maximum voltage VCBuf ($V_{CBuf_max}$): -0.3V to 18V (max. 40h) [cite: 150]
Maximum pin-to-pin voltage difference ($V_{PP_max}$): 18V (for global pins) [cite: 150]
Voltage peaks VDD ($V_{DD_peak}$): 28V (max. 50 µs, no current limitation) [cite: 150]
Voltage peaks OUT ($V_{OUT}$): 28V (max. 50 µs, no current limitation) [cite: 150]
Maximum current OUT pin (OUT_max): -80mA to 80mA (max. 1h; current > 0 means short to GND, current < 0 means short to $V_{DD}$) [cite: 150]
Maximum junction temperature ($T_{J_max}$): -40°C to 175°C (max. 1000h at $T_{J}=175^{\circ}C$) [cite: 150]
Storage & shipment temperature ($T_{storage}$): 5°C to 40°C (Relative humidity < 90%, storage time < 3a) [cite: 150]
HBM ESD Immunity ($V_{HBM}$): +4 kV (for VDD, GND, OUT pins), +2 kV (for all other pins) [cite: 162]
CDM ESD immunity ($V_{CDM}$): $\pm$0.5 kV (for all pins except corner pins), $\pm$0.75 kV (for corner pins only) [cite: 162]
Stray field robustness DC ($H_{EXT_DC}$): 5000 A/m (According ISO 11452-8:2015) [cite: 168]
Stray field robustness AC ($H_{EXT_AC}$): 1000 A/m (According ISO 11452-8:2015) [cite: 168]
Operating lifetime ($t_{op_life}$): 17000 h (max 1000 h at $T_{j~max}=175^{\circ}C$) [cite: 173]
Total lifetime ($t_{tot_life}$): 15 years (additional 3 years storage time) [cite: 173]
Ignition cycles ($N_{ignition}$): 200 to 1000x (during operating lifetime) [cite: 173]
Operating supply voltage ($V_{DD}$): 4.4V to 6V [cite: 186]
Programming supply voltage ($V_{PROG}$): 15.5V to 18V (Only required to perform a write-cycle) [cite: 186]
Supply voltage slew rate ($V_{DD}$ slew): 0.1 V/s to $10^{8}$ V/s [cite: 186]
Operating ambient temperature ($T_{A}$): -40°C to 150°C (max. 1000 h at $T_{A}=150^{\circ}C$) [cite: 186]
Internal angular resolution (RES): 16 bit [cite: 186]
Power-on time (tpon): 5 ms (Time until the sensor is ready for operation after start-up or reset) [cite: 186]
Angle range ($\alpha$): 0°elec to 360°elec (Electrical angle range from one sin/cos coil period) [cite: 186]
Differential angle range ($\Delta_{angle}$): 360° (Uniqueness depends on wings setup) [cite: 186]
Internal clock tolerance ($\Delta f_{clock}$): $\pm$3.5% (including temperature and lifetime) [cite: 186]
Max time to restore TX amplitude ($t_{restore}$): 5 ms (Only valid for redundant operation under the assumption that the faulty device is powered down) [cite: 196]
Thermal resistance ($R_{thJA}$): 150 K/W (Junction to ambient; measured on 2s2p PCB board) [cite: 208]
LC driver current ($I_{LC}$): 9.6 mA [cite: 213]
Operating supply current ($I_{DD}$): 20 mA (Excluding LC coil driver current and output driver current) [cite: 213]
ADC Integral non-linearity (INL): 10 $LSB_{16}$ to 200 $LSB_{16}$ [cite: 229]
ADC Noise (RMS) (Noise): 1 $LSB_{16}$ (standard deviation: 10) [cite: 229]
ADC Bandwidth (Bandwidth): 600 Hz [cite: 229]
Output low level ($V_{OL}$): $0.2 \cdot V_{DD}$ (for $I_{sink}=4mA$) [cite: 233]
Output high level ($V_{OH}$): $0.8 \cdot V_{DD}$ (for $I_{source}=4mA$) [cite: 233]
Input low level ($V_{IL}$): $0.3 \cdot V_{DD}$ (valid in normal operating range) [cite: 233]
Input high level ($V_{IH}$): $0.7 \cdot V_{DD}$ (valid in normal operating range) [cite: 233]
Leakage current ($I_{leak}$): -40 $\mu$A to 40 $\mu$A [cite: 233]
Resonance admittance ($G_{RLC}$): 0 mA/V to 6 mA/V [cite: 242]
Inductance transmitter coil ($L_{Tx}$): 1 $\mu$H to 10 $\mu$H [cite: 242]
Capacitance transmitter coil ($C_{Tx}$): 0.5 nF to 2.8 nF (Depending on used frequency and inductance) [cite: 242]
Frequency transmitter coil ($f_{Tx}$): 3 MHz to 5.5 MHz (Excitation frequency resulting from inductance and capacitance) [cite: 242]
Operating amplitude transmitter coil ($A_{Tx}$): 2.0 Vpp to 3 Vpp (Peak-to-peak; differential) [cite: 252]
Relative amplitude transmitter coil ($A_{TX_}$): 1.14 V to 1.31 V (Relative amplitude; differential) [cite: 252]
Q factor transmitter coil ($Q_{Tx}$): 10 to 20 (Temperature depending) [cite: 252]
Frequency receiver coil ($f_{RX}$): 3 MHz to 5.5 MHz [cite: 252]
Amplitude receiver coil ($A_{RX}$): 5 mVpp to 100 mVpp (Peak-to-peak; differential) [cite: 252]
Asymmetry caused by receiver ($A_{Asym}$): 2 mV (Measured in absence of rotor) [cite: 252]
LC driver current range ($I_{LC}$): 0.2 mA to 6 mA [cite: 252]
Undervoltage detection on VDD ($V_{UN}$): 3.8V to 4.4V (in case of an undervoltage the device disables the output) [cite: 257]
Overvoltage detection on VDD ($V_{OV}$): 6V to 7.5V (in an overvoltage condition the device disables the output) [cite: 257]
Overvoltage detection on OUT ($V_{OV_OUT}$): 6V to 10V (in an overvoltage condition the output switches to High-Z) [cite: 257]
Undervoltage reset time ($t_{UV}$): 50 $\mu$s (Time below threshold for the sensor to initiate a safe reaction) [cite: 257]
Overvoltage recovery time (tov): 50 $\mu$s (Time after overvoltage condition to enable protocol output) [cite: 257]
Microbreak immunity ($t_{MB}$): 5 $\mu$s (Min. value is only applicable if no boundary conditions are applied) [cite: 257]
Line capacitor ($C_{L}$): 1 nF to 3.9 nF (Including external circuit and cable) [cite: 287]
Supply capacitance ($C_{S}$): 70 nF to 150 nF (Related to EMC requirements) [cite: 287]
Buffer capacitance ($C_{Buf}$): 70 nF to 150 nF (Related to EMC requirements) [cite: 287]
Pull-Up resistor SENT ($R_{P}$): 10 K$\Omega$ to 55 K$\Omega$ [cite: 287]
Pull-Up resistor SPC ($R_{P}$): 1.45 K$\Omega$ to 10 K$\Omega$ [cite: 287]
EMC Filter on Rx pins ($CO_{A}$ to $C3_{B}$): 250 pF (Depending on application EMC requirements) [cite: 287]
Tank capacitor ($C_{L1}$, $C_{L2}$): 1 nF to 5.6 nF (Related to $C_{Tx}$) [cite: 287]
SENT Unit time (UT): 1.0 $\mu$s to 3.0 $\mu$s (Tolerance given by clock tolerance) [cite: 318]
SENT Low time ($t_{low}$): 3 UT to 5 UT (Including the fall time of the edge) [cite: 318]
SENT Pause pulse: 0 to 1 (0: Disable, 1: Enable) [cite: 318]
SENT Status nibble in CRC: 0 to 1 (0: Disable, 1: Enable) [cite: 318]
SENT Rolling counter: 0 to 1 (0: Disable, 1: Enable) [cite: 318]
SPC Unit time (UT): 1.0 $\mu$s to 3.0 $\mu$s (Tolerance given by clock tolerance) [cite: 462]
SPC Low time ($t_{low}$): 3 UT to 5 UT (Including the fall time of the edge) [cite: 462]
SPC Rolling counter: 0 to 1 (0: Disable, 1: Enable) [cite: 472]
SPC Bus mode: 0 to 1 (0: Disable, 1: Enable) [cite: 472]
SPC Variable trigger length: 0 to 1 (0: Disable, 1: Enable) [cite: 472]
Total trigger time (constant) ($t_{mtr}$): 85.5 UT to 94.5 UT (for constant trigger length) [cite: 591]
Total trigger time (variable) ($t_{mt}$): ($t_{mlow}$ + 11.4) UT to ($t_{mlow}$ + 12.6) UT (for variable trigger length) [cite: 591]
- Master nibble low time ($t_{mlow}$): 2 UT to 7 UT (Sync. mode enabled); 8 UT to 15 UT ($addr./ID=0$); 16 UT to 28 UT ($ddr./ID=1$); 29 UT to 49 UT (addr./ID = 2); 50 UT to 82 UT ($addr./ID=3$) [cite: 602]
Programmer PWM period (T): 40 $\mu$s to 120 $\mu$s [cite: 704]
Programmer low time to transmit “0” ($t_{1,0}$): $0.28 \cdot T$ to $0.38 \cdot T$ [cite: 726]
Programmer low time to transmit “1” ($t_{1,1}$): $0.62 \cdot T$ to $0.72 \cdot T$ [cite: 726]
Time difference between Programmer low and high level ($t_{4}$): $0.48 \cdot T$ to $0.88 \cdot T$ [cite: 726]
Programmer-Sensor response time ($t_{r}$): 50% to 80% of $t_{4}$ [cite: 726]
Programmer low pulse after PWM bit ($t_{3}$): $0.07 \cdot T$ to $0.2 \cdot T$ [cite: 726]
Interface reset time ($T_{Res}$): 1.7 ms to 5 ms [cite: 726]
Input signal low level ($V_{low_in}$): $0.3 \cdot V_{DD}$ [cite: 726]
Input signal high level ($V_{high_in}$): $0.7 \cdot V_{DD}$ [cite: 726]
Output signal low level ($V_{low_out}$): $0.2 \cdot V_{DD}$ (for $I_{sink}=4mA$) [cite: 726]
SICI line pull-up resistor ($R_{pu}$): 1.45 K$\Omega$ to 2 K$\Omega$ (Limited due to SPC/SENT input) [cite: 726]
Pause between frames ($t_{pause}$): 5 $\mu$s (time between frames to ensure correct processing) [cite: 731]
Time window for activation of programming interface ($t_{activate}$): 4500 $\mu$s (time after power-up of the sensor to enter the programming mode with the command) [cite: 731]
Duration of the CMTP programming pulse ($t_{prog_pause}$): 1 ms [cite: 731]