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| AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet 1.0 General Description The new AMIS-41682 and AMIS-41683 are interfaces between the protocol controller and the physical wires of the bus lines in a control area network (CAN). AMIS-41683 is identical to the AMIS-41682 but has a true 3.3V digital interface to the CAN controller. The device provides differential transmit capability but will switch in error conditions to a single-wire transmitter and/or receiver. Initially it will be used for low speed applications, up to 125kBaud, in passenger cars. Both AMIS-41682 and AMIS-41683 are implemented in I2T100 technology enabling both high-voltage analog circuitry and digital functionality to co-exist on the same chip. These products consolidate the expertise of AMIS for in-car multiplex transceivers and support together with AMIS-30522 (VAN), AMIS-30660 and AMIS-30663 (CAN High Speed) and AMIS-30600 (LIN) another widely used physical layer. 2.0 Key Features * Fully compatible with ISO11898-3 standard * Optimized for in-car low-speed communication o Baud rate up to 125kBaud o Up to 32 nodes can be connected o Due to built-in slope control function and a very good matching of the CANL and CANH bus outputs, this device realizes a very low electromagnetic emission (EME) o Fully integrated receiver filters o Permanent dominant monitoring of transmit data input o Differential receiver with wide common-mode range for high electromagnetic susceptibility (EMS) in normal- and low-power modes o True 3.3V digital I/O interface to CAN controller for AMIS-41683 only * Management in case of bus failure o In the event of bus failures, automatic switching to single-wire mode, even when the CANH bus wire is short circuited to VCC o The device will automatically reset to differential mode if the bus failure is removed o During failure modes there is full wake-up capability. o Un-powered nodes do not disturb bus lines o Bus errors and thermal shutdown activation is flagged on ERRB pin * Protection issues o Short circuit proof to battery and ground o Thermal protection o The bus lines are protected against transients in an automotive environment o An un-powered node does not disturb the bus lines * Support for low power modes o Low current sleep and standby mode with wake-up via the bus lines o Power-on flag on the output o Two-edge sensitive wake-up input signal via pin WAKEB * IOs o The un-powered chip cannot be parasitically supplied either from digital inputs nor from digital outputs. 3.0 Technical Characteristics Table 1: Technical Characteristics Symbol Parameter VCANH DC voltage at pin CANH, CANL Vbat Voltage at pin Vbat Conditions 0 < VCC < 5.25V; no time limit Load-dump Min -40 Max +40 +40 Unit V V AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 1 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet 4.0 Ordering Information Table 2: Ordering information Marketing Name AMIS41682NGA AMIS41683NGA Package SOIC-14 GREEN SOIC-14 GREEN Temp.Range -40C...125C -40C...125C 5.0 Block Diagram VBAT INH 1 Vcc (*) POR Mode & wake-up control 14 VCC 10 STB EN WAKE 5 6 7 Vcc (*) 9 Thermal shutdown 11 Driver control 12 8 Timer RTL CANH CANL RTH TxD GND ERR 2 13 4 Failure handling Receiver Filter RxD 3 AMIS-4168X (*) For AMIS-41682 pull up to Vcc. For AMIS-41683 pull up to Vcc/2 AMIS-41682 VCC AMIS-41683 ERR 4 Failure handling 3 ERR 4 Failure handling VCC RxD 3 RxD PC20050610.3 Figure 1: Block Diagram AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 2 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet 6.0 Typical Application Schematic 6.1. Application Schematic OUT 5V-reg IN VBAT * VCC EN 6 ERR 4 VCC INH 10 1 VBAT 14 WAKE 7 9 RTL CANL CANH CAN controller STB RxD 12 5 3 AMIS-41682 11 TxD 2 13 8 RTH GND GND PC20050610.1 * optional CAN BUS LINE Figure 2: Application Diagram AMIS-41682 OUT 3.3Vreg IN OUT 5V-reg IN VBAT * 4.7 k VCC EN 6 ERR 4 4.7 k VCC INH 10 1 VBAT 14 WAKE 7 9 RTL CANL CANH 3.3V CAN controller STB RxD 12 5 3 AMIS-41683 11 TxD 2 13 8 RTH GND GND PC20050610.2 * optional CAN BUS LINE Figure 3: Application Diagram AMIS-41683 AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 3 AMIS-4168X Fault Tolerant CAN Transceiver 6.2. Pin Description 6.2.1. Pin Out (top view) Data Sheet INH TxD RxD ERR STB EN WAKE 1 14 VBAT GND CANL CANH VCC RTL RTH AMIS-4168X 2 3 4 5 6 7 13 12 11 10 9 8 PC20041029.1 Figure 4: Pin Configuration 6.2.2. Pin Description Table 3: Pin Description Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Name INH TxD RxD ERR-B STB-B EN WAKEB RTH RTL Vcc CANH CANL GND BAT Description Inhibit output for external voltage regulator Transmit data input; internal pull-up current Receive data output Error; wake-up and power-on flag; active low Standby digital control input; active low; pull-down resistor Standby digital control input; active high; pull-down resistor Enable digital control input; falling and rising edges are both detected Pin for external termination resistor at CANH Pin for external termination resistor at CANL 5V supply input Bus line; high in dominant state Bus line; low in dominant state Ground Battery supply Functional description and characteristics are made for AMIS-41682 but are also valid for AMIS-41683. between the two devices will be explicitly mentioned in text. Differences AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 4 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet 7.0 Functional Description 7.1. Description AMIS-41682 is a fault tolerant CAN transceiver which works as an interface between the CAN protocol controller and the physical wires of the CAN bus (see Figure 2). It is primarily intended for low speed applications, up to 125kBaud, in passenger cars. The device provides differential transmit capability to the CAN bus and differential receive capability to the CAN controller. The AMIS-41683 has open-drain outputs (RXD and ERR-B pins) that allow the user to use external pull-up resistors to the required supply voltage; this can be 5V or 3.3V. To reduce EME, the rise and fall slope are limited. Together with matched CANL and CANH output stages, this allows the use of an unshielded twisted pair or a parallel pair of wires for the bus lines. The failure detection logic automatically selects a suitable transmission mode, differential or single-wire transmission. Together with the transmission mode, the failure detector will configure the output stages in such a way that excessive currents are avoided and that the circuit returns to normal operation when the error is removed. A high common-mode range for the differential receiver guarantees reception under worst case conditions and together with the integrated filter the circuit realizes an excellent immunity against EMS. The receivers connected to pins CANH and CANL have threshold voltages that ensure a maximum noise margin in single-wire mode. A timer has been integrated at pin TXD. This timer prevents the AMIS-41682 from driving the bus lines to a permanent dominant state. 7.2. Failure Detector The failure detector is fully active in the normal operating mode. After the detection of a single bus failure the detector switches to the appropriate mode. The different wiring failures are depicted in Figure 5. The figure also indicates the effect of the different wiring failures on the transmitter and the receiver. The detection circuit itself is not depicted. The differential receiver threshold voltage is typically set at 3V (VCC = 5V). This ensures correct reception with a noise margin as high as possible in the normal operating mode and in the event of failures 1, 2, 4, and 6a. These failures, or recovery from them, do not destroy ongoing transmissions. During the failure, reception is still done by the differential receiver and the transmitter stays fully active. To avoid false triggering by external RF influences the single-wire modes are activated after a certain delay time. When the bus failure disappears for another time delay, the transceiver switches back to differential mode. When one of the bus failures 3, 5, 6, 6a, and 7 is detected, the defective bus wire is disabled by switching off the affected bus termination and the respective output stage. A wake-up from sleep mode via the bus is possible either via a dominant CANH or CANL line. This ensures that a wake-up is possible even if one of the failures 1 to 7 occurs. If any of the wiring failure occurs, the output signal on pin ERRB will become low. On error recovery, the output signal on pin ERRB will become high again. During all single-wire transmissions, the EMC performance (both immunity and emission) is worse than in the differential mode. The integrated receiver filters suppress any HF noise induced into the bus wires. The cut-off frequency of these filters is a compromise between propagation delay and HF suppression. In the single-wire mode, LF noise cannot be distinguished from the required signal. AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 5 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet Failure 1 : CANH wire interrupted Vbat Vcc RTL RTL 0.6Vcc Failure 4 : CANL shorted to Gnd Vbat Vcc RTL TxD CL TxD RxD RxD CH 0.4Vcc GND RTL 0.6Vcc TxD CL CD CH RxD ERR TxD RxD ERR CANL CANH CANL CANH CD CANL CANH CANL CANH 0.4Vcc ERR ERR RTH RTH RTH RTH Error-detection: CL = CH more then 4 pulses Error-detection: dominant longer then Tnd_f4 Failure 2 : CANL wire interrupted Vbat Vcc RTL RTL 0.6Vcc Failure 6 : CANL wire shorted to Vbat Vbat Vcc Vbat RTL TxD CL TxD RxD RxD CH 0.4Vcc RTL 0.6Vcc TxD CL CD CH RxD ERR TxD RxD ERR CANL CANH CANL CANH CD CANL CANH CANL CANH 0.4Vcc ERR ERR RTH RTH RTH RTH Error-detection: CL = CH more then 4 pulses Error-detection: CANL>7V Failure 3 : CANH shorted to Vbat Vbat Vcc RTL RTL 0.6Vcc Failure 6a : CANL shorted to Vcc Vbat Vcc RTL TxD CL TxD RxD RxD CH 0.4Vcc Vcc RTL 0.6Vcc TxD CL CD CH RxD ERR TxD RxD ERR CANL CANH CANL CANH CD CANL CANH CANL CANH 0.4Vcc ERR ERR RTH Error-detection: CANH > 2V longer then Tnd_f3 Vbat RTH RTH RTH Error-detection: CL = CH more then 4 pulses Failure 3a : CANH shorted to Vcc Vcc Vbat Vcc RTL RTL 0.6Vcc Failure 7 : CANH shorted to CANL Vbat Vcc RTL TxD CL CD CH 0.4Vcc RTL 0.6Vcc TxD CL CD CH RxD ERR TxD RxD ERR CANL CANH CANL CANH TxD RxD RxD ERR ERR CANL CANH CANL CANH 0.4Vcc RTH Vcc RTH RTH RTH Error-detection: CANH >2V longer then Tnd_f3 Error-detection: dominant longer then Tnd_f7 Failure 5 : CANH shorted to Gnd Vbat Vcc RTL RTL 0.6Vcc TxD CL CD CH RxD ERR TxD RxD ERR CANL CANH CANL CANH 0.4Vcc RTH Error-detection: CL = CH more then 4 pulses GND RTH Figure 5: Different Types of Wiring Failure AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 6 AMIS-4168X Fault Tolerant CAN Transceiver 7.3. Low Power Modes Data Sheet The transceiver provides three low power modes that can be entered and exited via pins STBB and EN (see Figure 6). (Go-tosleep mode is only a transition mode.) The sleep mode is the mode with the lowest power consumption. Pin INH is switched to high-impedance for deactivation of the external voltage regulator. Pin CANL is biased to the battery voltage via pin RTL. If the supply voltage is provided, pins RXD and ERRB will signal the wake-up interrupt signal. The standby mode will react the same as the sleep mode but with a high-level on pin INH. The power-on standby mode is the same as the standby mode with the battery power-on flag instead of the wake-up interrupt signal on pin ERRB. The output on pin RXD will show the wake-up interrupt. This mode is only for reading out the power-on flag. Wake-up request is detected by the following events: o Local wake-up: Rising or falling edge on input WAKEB (Levels maintained for a certain period). o Remote wake-up from CAN bus : A message with five consecutive dominant bits. On a wake-up request the transceiver will set the output on pin INH high which can be used to activate the external supply voltage regulator. Note: Pin INH is also set similar as an after wake up event by VBAT voltage being below the battery power on flag level. See FLAG_VBAT in Table 6) If VCC is provided, the wake-up request can be read on the ERR-B or RXD outputs so the external microcontroller can wake-up the transceiver (switch to normal operating mode) via pins STB-B and EN. In the low power modes the failure detection circuit remains partly active to prevent increased power consumption in the event of failures 3, 3a, 4, and 7. The go-to-sleep-mode is only a transition mode. The pin INH stays active for a limited time. During this time the circuit can still go to another low-power mode. After this time the circuit goes to the sleep-mode. In case of a wake up request (from BUS or WAKEB pin) during this transition time, the wake up request ha higher priority than go-to-sleep and INH will not be deactivated. Once VCC is below the threshold level of LAG_Vcc , the signals on pins STB-B and EN will internally be set to low-level to provide fail safe functionality. AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 7 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet Power-On Stand-by STB EN change state EN INH Act ERR PORflag RxD RTL WUint High Low Vbat EN, STB change state STB change state Normal Mode STB EN INH Act ERR Errflag GoTo Sleep Mode STB change state RxD RTL Rec. out STB EN INH Act 2) ERR WUint RxD RTL WUint High High Vcc Low High Vbat Time-out GoToSleep mode EN, STB change state EN change state Standby Mode STB Low EN Low INH Act ERR WUint Sleep Mode STB Local or Remote Wake-up 3) RxD RTL WUint EN Low INH Hz ERR WUint 1) RxD RTL WUint 1) Vbat Low Vbat Power-On 1) Only when Vcc > POR_Vcc 2) INH active for a time = T_GoToSleep 3) Local Wake-up through pin Wake which change state for a time > T_wake_min Remote Wake-up through pin CANL or CANH when dominant for a time >TCANH_min or TCANL_min 4) Mode Change through pins STB and EN is only possible if Vcc > POR_Vcc Mode Change 4) Figure 6: Low Power Modes 7.4. Power-on After power-on (VBAT switched on) the signal on pin INH will become high and an internal power-on flag will be set. This flag can be read in the power-on standby mode via pin ERRB (STB-B = 1; EN = 0) and will be reset by entering the normal operating mode. 7.5. Protections A current limiting circuit protects the transmitter output stages against short circuit to positive and negative battery voltage. If the junction temperature exceeds a maximum value, the transmitter output stages are disabled and flagged on ERRB pin. Because the transmitter is responsible for the major part of the power dissipation, this will result in reduced power dissipation and hence a lower chip temperature. All other parts of the IC will remain operating. The pins CANH and CANL are protected against electrical transients that may occur in an automotive environment. AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 8 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet 8.0 Electrical Characteristics 8.1. Definitions All voltages are referenced to GND (pin 13). Positive currents flow into the IC. Sinking current means that the current is flowing into the pin. Sourcing current means that the current is flowing out of the pin. 8.2. Absolute Maximum Ratings Stresses above those listed in this clause may cause permanent device failure. Exposure to absolute maximum ratings for extended periods may effect device reliability. Table 4: Absolute Maximum Ratings Symbol Parameter VCC VBAT Vdig VCANH-L Vtran-CAN VWAKE VINH VRTH-L RRTH RRTL Tjunc Vesd Supply voltage on pin VCC Battery voltage on pin BAT DC voltage on pins EN, STB-B, ERR-B, TxD, RxD DC voltage on pin CANH, CANL Transient voltage on pins CANH and CANL (Figure 11) note 1 DC input voltage on pin WAKE DC output voltage on pin INH DC voltage on pin RTH , RTL Termination resistance on pin RTH Termination resistance on pin RTL Maximum junction temperature Electrostatic discharge voltage (CANH- and CANL pin) HBM; note 2 Electrostatic discharge voltage (other pins) HBM; note 2 Electrostatic discharge voltage; machine model; note 3 Notes: 1. The applied transients shall be in accordance with ISO 7637 part 1, test pulses 1, 2, 3a, and 3b. Class C operation 2. Equivalent to discharging a 100pF capacitor through a 1.5kOhm resistor. 3. Equivalent to discharging a 200pF capacitor through a 10Ohm resistor and a 0.75H coil. Min. -0.3 -0.3 -0.3 -40 -350 -40 -0.3 -40 500 500 -40 -6 -3.0 -500 Max. +6 +40 VCC + 0.3 +40 +350 +40 VBAT + 0.3 40 16000 16000 +150 +6 +3.0 +500 Unit V V V V V V V V C kV kV V 8.3. Thermal Characteristics Table 5: Thermal Characteristics Symbol Rth(vj-a) Rth(vj-s) Parameter Thermal resistance from junction to ambient in SSOP14 package (2 layer PCB) Thermal resistance from junction to substrate of bare die Conditions In free air In free air Value 140 30 Unit K/W K/W AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 9 AMIS-4168X Fault Tolerant CAN Transceiver 8.4. Characteristics Data Sheet VCC = 4.75V to 5.25V; VBAT = 5V to 36V; Tjunc = -40C to +150C; unless otherwise specified. Table 6: Characteristics AMIS-4168X Symbol Parameter Supplies Vcc Vbat ICC LAG_Vcc IBAT Supply current Forced low power mode Battery current on pin BAT Conditions Normal operating mode; VTXD = VCC (recessive) Normal operating mode; VTXD = 0V (dominant); no load VCC rising VCC falling In all modes of operation; 500 between RTL - CANL 500 between RTH - CANH VBAT = WAKE = INH = 5 to 36V Low power modes; Vcc = 5V; Tamb = -40C to 100C VBAT = WAKE = INH = 5 to 36V Low power modes; Vcc = 5V; Tamb = 100C to 150C VBAT = WAKE = INH = 5 to 36V For setting power-on flag For not setting power-on flag 1V Normal mode; VtxD = 0V VWAKE = 0V; VBAT = 27V VSTB-B = 0V VBAT = 12V; low power mode; for rising and falling edge IINH = 0.18mA Sleep mode; VINH = 0V Min. 1 1 2.45 10 110 230 Typ. 3.7 8 Max. 6.3 12 4.5 Unit mA mA V V A ICC+ IBAT ICC+ IBAT FLAG_VBAT Supply current plus battery current Supply current plus battery current Power-on flag-level for pin Vbat 30 60 80 A A V V K ms s A V s V A 3.5 190 0.75 5 -10 2.5 7 2.1 2.4 360 1 Pins STB-B, EN and TXD R-PD Pull-down resistor at pin EN and STB-B T_Dis_TxD Dominant time-out for TxD T_GoToSleep Minimum hold-time for Go-To-Sleep mode Pin WAKE-B IIL Low-level input current Vth(WAKE) Wake-up threshold voltage T_Wake_Min Pin INH Delta_VH I_leak Minimum time on pin wake (debounce time) High-level voltage drop Leakage current 600 4 50 -1 3.9 38 0.8 1 3.2 Table 7: Characteristics AMIS-41682 (5V version) Symbol Parameter Pins STB-B, EN and TXD VIH High-level input voltage VIL Low-level input voltage I-PU-H High-level input current pin TXD I-PU-L Low-level input current pin TXD Pins RXD and ERR-B VOH High-level output voltage VOL Low-level output voltage Conditions Min. 0.7 x Vcc -0.3 -10 -80 VCC - 0.9 0 0 Typ. Max. 6.0 0.3 x Vcc -200 -800 VCC 0.4 1.5 Unit V V A A V V V TXD = 0.7 * Vcc TXD = 0.3 * Vcc lsource = -1mA Isink = 1.6mA Isink = 7.5mA Table 8: Characteristics AMIS-41683 (3.3V version) Symbol Parameter Pins STB-B, EN and TXD VIH High-level input voltage VIL Low-level input voltage I-PU-H High-level input current pin TXD Pins RXD and ERR-B VOL Low-level output voltage open drain I_leak Leakage when driver is off Conditions Min. 2 -0.3 Typ. Max. 6.0 0.8 Unit V V A V A TXD = 2V lsink = 3.2mA VERR-B = VRXD = 5V -10 0.4 1 AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 10 AMIS-4168X Fault Tolerant CAN Transceiver Table 9: Characteristics AMIS-4168X continued Symbol Parameter Conditions Pins CANH and CANL (Receiver) Vdiff Differential receiver No failures and bus failures 1, 2, 4, and 6a; threshold voltage see Figure 5 VCC = 5V VCC = 4.75V to 5.25V VseCANH Single-ended receiver Normal operating mode and failures 4, 6 and 7 threshold voltage on pin VCC = 5V CANH VCC = 4.75 to 5.25V VseCANL Single-ended receiver Normal operating mode and failures 3 and 3a threshold voltage on pin VCC = 5V CANL VCC = 4.75 to 5.25V Detection threshold voltage Vdet(CANL) Normal operating mode for short circuit to battery voltage on pin CANL Wake-up threshold voltage Vth(wake) On pin CANL Low power modes On pin CANH Low power modes Difference of wake-up DVth(wake) Low power modes Threshold voltages Pins CANH and CANL (Transmitter) VO(reces) Recessive output voltage VTXD = VCC On pin CANH RRTH < 4k On pin CANL RRTL < 4k VO(dom) Dominant output voltage VTXD = 0V; VEN = VCC On pin CANH ICANH = -40mA On pin CANL ICANL = 40mA Normal operating mode; VCANH = 0V; VTXD = 0V IO(CANH) Output current on pin CANH Low power modes; VCANH = 0V; VCC = 5V Normal operating mode; IO(CANL) Output current on pin CANL VCANL = 14V; VTXD = 0V Low power modes; VCANL = 12V; VBAT = 12V Pins RTH and RTL Switch-on resistance Rsw(RTL) Normal operating mode; I(RTL)> -10mA between pin RTL and VCC Switch-on resistance Rsw(RTH) between pin RTH and Normal operating mode; I(RTH)< 10mA ground VO(RTH) Output voltage on pin RTH Low power modes; IO = 1mA IO(RTL) Output current on pin RTL Low power modes; VRTL = 0V Normal operating mode and failures 4, 6 and 7; Ipu(RTL) Pull-up current on pin RTL VRTL= 0V Pull-down current on pin Normal operating mode and failures 3 and 3a Ipd(RTH) RTH Thermal Shutdown Tj Junction temperature For shutdown Data Sheet Min. Typ. Max. Unit -3.25 0.65 x Vcc 1.6 0.32 x Vcc 3 0.61 x Vcc 6.5 2.5 1.1 0.8 -3 0.6 x Vcc 1.775 0.355 x Vcc 3.2 0.645 x Vcc 7.3 3.2 1.8 1.4 -2.75 0.55 x Vcc 1.95 0.39 x Vcc 3.4 0.68 x Vcc 8 3. 9 2.25 V V V V V V V V V V 0.2 Vcc - 0.2 Vcc - 1.4 1.4 -110 -1.6 45 -1 -80 0.5 80 0.5 -45 1.6 110 1 100 100 -1.25 -75 -75 150 180 1.0 -0.3 V V V V mA A mA A V mA A A C AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 11 AMIS-4168X Fault Tolerant CAN Transceiver 8.5. Timing Characteristics Data Sheet VCC = 4.75V to 5.25V; VBAT = 5V to 27V; VSTB-B = VCC; Tjunc = -40C to +150C; unless otherwise specified. Table 10: Timing Characteristics AMIS-4168X Symbol Parameter CANL and CANH output tt(r-d) transition time for recessiveto-dominant CANL and CANH output tt(d-r) transition time for dominant-torecessive Conditions 10 to 90%; C1 = 10nF; C2 = 0; R1 = 125; see Figure 7 10 to 90%; C1 = 1nF; C2 = 0; R1 = 125; see Figure 7 No failures C1 = 1nF; C2 = 0; R1 = 125 C1 = C2 = 3.3nF; R1 = 125 Failures 1, 2, 5, and 6a; see Figure 5, 7 C1 = 1nF; C2 = 0; R1 = 125 C1 = C2 = 3.3nF; R1 = 125 Failures 3, 3a, 4, 6, and 7; see Figure 5, 7 C1 = 1nF; C2 = 0; R1 = 125 C1 = C2 = 3.3nF; R1 = 125 No failures C1 = 1nF; C2 = 0; R1 = 125 C1 = C2 = 3.3nF; R1 = 125 Failures 1, 2, 5, and 6a; see Figure 5, 7 C1 = 1nF; C2 = 0; R1 = 125 C1 = C2 = 3.3nF; R1 = 125 Failures 3, 3a, 4, 6, and 7; see Figure 5, 7 C1 = 1nF; C2 = 0; R1 = 125 C1 = C2 = 3.3nF; R1 = 125 Low power modes; VBAT = 12V Low power modes; VBAT = 12V Normal mode Failure 3 and 3a Failure 4, 6 and 7 Low power modes; VBAT = 12V Failure 3 and 3a Failure 4 and 7 Normal mode Failure 3 and 3a Failure 4 and 7 Failure 6 Low power modes; VBAT = 12V Failures 3, 3a, 4, and 7 Normal mode and failures 1, 2, 4, and 6a Failure detection (pin ERR-B becomes LOW) Failure recovery (pin ERR-B becomes HIGH) 7 7 1.6 0.3 1.6 0.1 0.3 7 125 0.3 4 4 Min 0.35 0.2 Typ 0.60 0.3 0.75 1.4 1.2 1.4 1.2 1.5 0.75 2.5 1.2 2.5 1.2 1.5 Max 1.4 0.7 1.5 2.1 1.9 2.1 1.9 2.2 1.5 3.0 1.9 3.0 1.9 2.2 38 38 8.0 1.6 8.0 1.6 1.6 38 750 1. 6 Unit s s s s s s s s s s s s s s s s ms ms ms ms ms s s ms - tPD(L) Propagation delay TXD to RXD (LOW) tPD(H) Propagation delay TXD to RXD (HIGH) tCANH(min) tCANL(min) Minimum dominant time for wake-up on pin CANH Minimum dominant time for wake-up on pin CANL tdet Failure detection time trec Failure recovery time Dpc Pulse-count difference between CANH and CANL AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 12 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet BATTERY +5V VCC INH 10 1 VBAT 14 WAKE 7 9 R1 C1 500 10 k C3 500 10 k C2 Common Mode voltage EN 6 ERR 4 STB RxD 20 pF 5 3 RTL CANL CANH 12 AMIS-4168X 11 TxD 2 13 8 RTH V GND PC20050511.1 R2 Figure 7: Test Circuit for Dynamic recessive TxD 50% dominant recessive 50% tt(r-d) tt(d-r) 5V VCANL 90% 10% 3.6V 10% 90% VCANH RxD 1.4V 0V 0.3Vcc tPD(L) PC20050511.3 0.7Vcc tPD(H) Figure 8: Timing Diagram for AC Characteristics AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 13 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet BATTERY 100 nF +5V 100 nF EN 6 ERR 4 STB TxD Generator 20 pF RxD 5 2 3 13 8 10 k 33 k VCC INH 1 VBAT 14 WAKE 7 10 560 9 RTL CANL CANH 120 4.7 nF Active Probe 12 AMIS-4168X 11 560 120 4.7 nF Spectrum Anayzer RTH GND PC20050511.5 Figure 9: Test Setup EME Measurements Figure 10: EME Measurements (See Measurement Setup Figure 9) AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 14 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet BATTERY +5V VCC INH 10 1 VBAT 14 WAKE 511 7 9 1 nF RTL CANL CANH 511 1 nF 1 nF 1 nF EN 6 ERR 4 STB RxD 20 pF 5 3 12 AMIS-4168X 11 Transient Generator TxD 2 13 8 RTH GND PC20041029.5 125 Figure 11: Test Circuit for Schaffner Tests (ISO 7637 part AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 15 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet 9.0 Package Outline SOIC-14: Plastic small outline; 14 leads; body width 150 mil; JEDEC: MS-012 AMIS reference: SOIC150 14 150 G AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 16 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet 10.0 Soldering 10.1 Introduction to Soldering Surface Mount Packages This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in the AMIS "Data Handbook IC26; Integrated Circuit Packages" (document order number 9398 652 90011). There is no soldering method that is ideal for all surface mount IC packages. Wave soldering is not always suitable for surface mount ICs, or for printed-circuit boards with high population densities. In these situations reflow soldering is often used. 10.2 Re-flow Soldering Re-flow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printedcircuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. Several methods exist for reflowing; for example, infrared/convection heating in a conveyor type oven. Throughput times (preheating, soldering and cooling) vary between 100 and 200 seconds depending on heating method. Typical re-flow peak temperatures range from 215 to 250C. The top-surface temperature of the packages should preferably be kept below 230C. 10.3 Wave Soldering Conventional single wave soldering is not recommended for surface mount devices (SMDs) or printed-circuit boards with a high component density, as solder bridging and non-wetting can present major problems. To overcome these problems the doublewave soldering method was specifically developed. If wave soldering is used the following conditions must be observed for optimal results: * Use a double-wave soldering method comprising a turbulent wave with high upward pressure followed by a smooth laminar wave. * For packages with leads on two sides and a pitch (e): o Larger than or equal to 1.27mm, the footprint longitudinal axis is preferred to be parallel to the transport direction of the printed-circuit board; o Smaller than 1.27mm, the footprint longitudinal axis must be parallel to the transport direction of the printedcircuit board. The footprint must incorporate solder thieves at the downstream end. * For packages with leads on four sides, the footprint must be placed at a 45 angle to the transport direction of the printedcircuit board. The footprint must incorporate solder thieves downstream and at the side corners. During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. Typical dwell time is four seconds at 250C. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. 10.4 Manual Soldering Fix the component by first soldering two diagonally-opposite end leads. Use a low voltage (24V or less) soldering iron applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300C. When using a dedicated tool, all other leads can be soldered in one operation within two to five seconds between 270 and 320C. Table 11: Soldering Process Package Soldering Method Wave Re-flow(1) BGA, SQFP HLQFP, HSQFP, HSOP, HTSSOP, SMS PLCC (3) , SO, SOJ LQFP, QFP, TQFP SSOP, TSSOP, VSO Not suitable Not suitable (2) Suitable Not recommended (3)(4) Not recommended (5) Suitable Suitable Suitable Suitable Suitable Notes: 1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum temperature (with respect to time) and body size of the package, there is a risk that internal or external package cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the drypack information in the "Data Handbook IC26; Integrated Circuit Packages; Section: Packing Methods." 2. These packages are not suitable for wave soldering as a solder joint between the printed-circuit board and heatsink (at bottom version) can not be achieved, and as solder may stick to the heatsink (on top version). 3. If wave soldering is considered, then the package must be placed at a 45 angle to the solder wave direction. The package footprint must incorporate solder thieves downstream and at the side corners. 4. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65mm. 5. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65mm; it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5mm. AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 17 AMIS-4168X Fault Tolerant CAN Transceiver Data Sheet 11.0 Company or Product Inquiries For more information about AMI Semiconductor, our technology and our product, visit our Web site at: http://www.amis.com. North America Tel: +1.208.233.4690 Fax: +1.208.234.6795 Europe Tel: +32 (0) 55.33.22.11 Fax: +32 (0) 55.31.81.12 Devices sold by AMIS are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. AMIS makes no warranty, express, statutory, implied or by description, regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. AMIS makes no warranty of merchantability or fitness for any purposes. AMIS reserves the right to discontinue production and change specifications and prices at any time and without notice. AMI Semiconductor's products are intended for use in 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 AMIS for such applications. Copyright (c)2007 AMI Semiconductor, Inc. AMI Semiconductor - Rev. 2.0 - Feb. 07 www.amis.com 18 |
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