Preliminary Information This document contains information on a new product. The parametric information, although not fully characterized, is the result of testing initial devices. M02097-11/-21 3.3/5V LED Driver / Limiting Amplifier for Operation to 500 Mbps The M02097 is an integrated LED driver and limiting amplifier for applications to 500 Mbps. The LED driver modulation output can be AC or DC coupled to an LED. The device can operate from a 3.3V or 5V supply. The M02097 includes monitors for bias and modulation current. Integrated safety circuitry provides latched bias and modulation current shutdown if a fault condition is detected and provides an internal VCC switch. The limiting amplifier also includes a programmable signal-level detector, allowing the user to set thresholds at which the logic outputs are enabled. The M02097-11 features a PECL LOS-ST output while the M02097-21 features a CMOS (external pull-up required) LOS-ST output. PECL outputs are available on the limiting amplifier. Configuration logic provides flexibility in setting data path polarity, safety logic configuration, and LOS behavior. Applications Features (con't) * * * * * * * * 155Mbps LAN ATM Transceivers ESCON Receivers Fast Ethernet/FDDI Multimode LED Transmitters SFP Transceivers IEEE 1394 S100, S200 and S400 Transceivers M02097 Block Diagram VCC3R VCCR STSET Threshold Setting Circuit Regulator with Bypass RxOUTp Output Buffer RxOUTm 2k Limiting Amplifier RxINp Vttr 2k RxINm Rx_Polarity LOS-ST PECL Offset Cancel Level Detect PECL (-11) LOS CMOS/TTL (-21) Comparator LOS-ST_sel LOS-to-JAM RSSI 3.3V Regulator with Bypass To Safety Logic Modulation Control TCSLOPE Iref DCR_Disable VCCT TCSTART Biasing To Safety Logic VCC3T SVCC MODSET DIN + 4k Vttx DIN- 4k Output Buffer Input Buffer Laser Driver OUTOUT+ GND0 Tx_Polarity Rx_Polarity Tx_Polarity CONFIG_1 CONFIG_2 Configuration Logic CONFIG_3 V CC VCC3 DCR_Disable LOS-ST_sel PBOUT SCB LOS-to-JAM CONFIG_4 Safety Circuitry with Latched Fault TX Disable LED Pre-Bias Control GND 02097-DSH-001-C PBSET CPB FAIL DIS RESET Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential November 2006 Preliminary Information Temperature compensation for modulation current Pre-bias adjustment to improve LED edge speed SFP compliant safety circuitry (configurable) 6mV input limiting amp sensitivity at 500 Mbps. PECL limiting amplifier outputs Limiting amplifier includes integrated DC offset cancellation circuit Polarity Control for both the driver and limiting amplifier data paths Features Operates with 3.3V or 5V supply with an internal auto-sensing regulator that enables with 5V supplies and is bypassed with 3.3V * High speed operation; suitable for applications to 500 Mbps. 200 ps supplies typical rise/fall time into 5. * Powers 3.3V ROSAs from its Receiver Regulator output enabling true * Programmable modulation current to 120 mA 3.3/5V designs using all 3.3V Mindspeed TIAs * Integrated power supply switch for redundant shutdown under a fault condition * * * * * * Ordering Information Part Number Package Operating Temperature M02097G-11* QFN32 -40C to 95C M02097G-21* QFN32 -40C to 95C * The letter "G" designator after the part number indicates that the device is RoHS-compliant. Refer to www.mindspeed.com for additional information. Revision History Revision Level Date ASIC Revision C Preliminary November 2006 -11/-21 Reflect current device pinout. B Advance August 2006 -11/-21 Update several specifications based on initial device evaluation. A Advance June 2006 NA Description Preliminary Information Initial Release. M02097 622 Mbps LED Driver Eye Diagram M02097 Pin Configuration 32 31 30 29 28 27 26 25 IREF LOS-ST Config4 Config3 Config2 Config1 RxINm RxINp 1 RxOUTm VCC 3R 24 2 RxOUTp STSET 23 3 VCCR CPB 22 4 VCC T V CC3T 21 GND TCSLOPE SV CC 20 6 TCSTART OUTN 19 7 DINp OUTP 18 8 DINm GNDO 17 FAIL DIS MODSET NC NC PBSET NC PBOUT 02097-DSH-001-C 5 9 10 11 12 13 14 15 16 Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential ii 1.0 Product Specification 1.1 Absolute Maximum Ratings These are the absolute maximum ratings at or beyond which the IC can be expected to fail or be damaged. Reliable operation at these extremes for any length of time is not implied. Table 1-1. Absolute Maximum Ratings Parameter Rating Units VCC Power supply voltage -0.4 to +6.5 V VCC3 3.3V power supply voltage (when VCC3 is connected to VCC) -0.4 to +4.0 V Ambient operating temperature -40 to +95 C Storage temperature -65 to +150 C Maximum pre-bias output current at PBOUT 20 mA Maximum modulation current 140 mA TA TSTG IPBOUT_MAX IMOD_MAX 1.2 Table 1-2. Preliminary Information Symbol Recommended Operating Conditions Recommended Operating Conditions Parameter Rating Units +5V 7.5% or +3.3V 7.5% V Junction temperature -40 to +125 C Operating ambient -40 to +95 C Power supply: (VCC-GND) (apply no potential to VCC3) or (VCC3-GND) (connect VCC to same potential as VCC3) 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 1 Product Specification 1.3 DC Characteristics 1.3.1 DC Electrical Characteristics - LED Driver VCC = 3.05 to 3.55V or 4.7 to 5.5V, TA = -40C to +95C, unless otherwise noted. Typical values are VCC = 3.3V, IPBOUT = 4mA, IMOD = 50mA. Table 1-3. DC Electrical Characteristics - LED Driver Symbol ICC Parameter VCCT supply current Conditions Minimum Typical Maximum Units Using external 3.3V supply VCC = 3.3V (1) - 34 43 mA Additional current when operating from 5V supply - 1.5 - 3.3V supply detection (low voltage) threshold (3) 2.6 2.8 3.0 V VCC3HH 3.3V supply detection (high voltage) threshold (3) 3.65 3.8 4.1 V VCC5THL 5V supply detection (low voltage) threshold 4.3 4.45 4.65 V VCC5THH 5V supply detection (high voltage) threshold 5.6 6.0 6.2 V VMODSET Modulation current ref. Voltage reference for MODSET 1.1 1.25 1.4 V VPBSET Pre-bias current setting output voltage reference Voltage at PBSET 1.1 1.25 1.4 V VFAULTL Low fault voltage detection threshold (IBOUT, OUTP, CPB, MODSET, PBSET) Fault condition occurs when voltage drops below this level - 100 200 mV VSELFL Self-biased voltage for PBOUT and OUTP During disable condition 0.5 1.6 1.8 V IPRE-BIAS Pre-bias current adjust range At PBOUT. VPBOUT > 0.7V 1 - 10 mA IPBIAS(OFF) Pre-bias current with output disabled DIS = high VPBOUT = VCC3 - - 150 A Ratio of pre-bias output current to PBSET current = IPRE-BIAS / IPBSET - 60 - A/A VIH_DIS TTL/CMOS input high voltage (DIS) 2.0 - 5.5 V VIL_DIS TTL/CMOS input low voltage (DIS) - - 0.8 V VIH_CFG Configuration logic input high voltage (Config1 - 4) (4) VCC3T-0.5 - - V VIL_CFG Configuration logic input low voltage (Config1 - 4) (4) - - 0.5 V VOH_FAIL Logic output high voltage (FAIL) With external 10 k pull-up to VCC VCC - 0.6 - - V VOL_FAIL Logic output low voltage (FAIL) IOL = 0.8 mA - - 0.4 V Differential input resistance Transmitter Data inputs - 6 - k RIN 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential Preliminary Information VCC3THL 2 Product Specification Table 1-3. DC Electrical Characteristics - LED Driver Symbol VCMSELF Parameter Conditions Minimum Typical Maximum Units - VCC3 - 1.3 - V VCC3 - 1.5 - VCC3 - VIN(Diff)/4 V 300 - 2400 mV Self-biased common mode input Data inputs floating voltage VINCM Common-mode input compliance voltage Transmitter Data inputs VIN(Diff) Differential input voltage = 2*(DINpHIGH - DINpLOW) NOTES: 1. Excludes pre-bias and modulation currents delivered to the LED. Maximum supply current based on IMOD = 90 mA, IPBOUT = 10 mA. 2. Pre-bias and modulation currents add directly to power supply current in 5V applications; additional supply current noted excludes these currents. 3. VCC3 supply okay circuitry monitors internally regulated voltage when only the +5V supply is used (VCC = 5V). 4. Input is 3.3V tolerant logic. DC Electrical Characteristics - Limiting Amplifier Preliminary Information 1.3.2 VCCR = 3.05 to 3.55V or 4.7 to 5.5V, TA = -40C to +95C, unless otherwise noted. Typical values are VCC = 3.3V, 25C. Table 1-4. DC Electrical Characteristics - Limiting Amplifier Symbol Parameter ICC VOUTLPECL Conditions VCCR supply current (1) VOUTHPECL(1) RIN_DIFF Maximum Units Includes PECL load - 54 65 mA Additional current when operating from 5V supply - 1.5 - VCC - 1.86 VCC - 1.71 VCC - 1.62 VCC - 1.06 VCC - 0.95 VCC - 0.88 - 4 - k 2.4 - VCC V - - 0.4 V Single ended; 50 load to VCC - 2V PECL Output High Voltage (RxOUTm, RxOUTp) Single ended; 50 load to VCC - 2V V V Differential Input Resistance LOS Output High Voltage VOUTHLOSPECL(1) LOS Output Low Voltage (2) VOUTHLOSCMOS Typical PECL Output Low Voltage (RxOUTm, RxOUTp) VOUTLLOSPECL(1) VOUTLLOSCMOS Minimum (2) Open collector, 4.7 - 10 k pull up to VCC IOL = 0.8 mA LOS-ST Output Low Voltage (1, 2, 3) Single ended; 50 load to VCC - 2V VCC - 1.9 VCC - 1.78 VCC - 1.66 V LOS-ST Output High Voltage (1, 2, 3) Single ended; 50 load to VCC - 2V VCC - 1.13 VCC 1.042 VCC - 0.95 V NOTES: 1. PECL level requirements apply from 0C to 95C. 2. M02091-11 has PECL LOS-ST output, M02097-21 has CMOS LOS-ST output. 3. When LOS-ST is terminated with a 510 resistor to ground, PECL output high and low levels are approximately the same as for VOUTHPECL and VOUTLPECL. 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 3 Product Specification 1.4 AC Characteristics 1.4.1 AC Electrical Characteristics - LED Driver VCCT = 3.05 to 3.55V or 4.7 to 5.5V, TA = -40C to +95C, unless otherwise noted. Typical values are VCC = 3.3V, IPBOUT = 4mA, IMOD = 50mA. Table 1-5. AC Electrical Characteristics - LED Driver Symbol Parameter IMOD Modulation current adjust range IMOD(OFF) Modulation current with output disabled Conditions Typical Maximum Units To meet AC specifications 30 - 120 mAPP DIS = high - - 150 A - 140 - A/A 0 - 104 ppm/C -40(2) - 95 C - 200 500 ps - 10 - % - 0.8 - psRMS - 30 60 psPP Ratio of modulation current to MODSET current IMOD-TC Programmable range for modulation current temperature coefficient Adjustable using TCSLOPE TTCSTRT Programmable temperature at which modulation current TC compensation enables Based on value set for TCSTART tR / tF Modulation output rise / fall times OS Overshoot of modulation output RJ Random jitter DJ Modulation output deterministic jitter 20% to 80%. Measured using alternating 11110000 pattern at 500 Mbps; 5 load with 12pF/ 35 between OUTP and OUTN Into 5 load with 12pF/35 between OUTP and OUTN into 5 load (includes pulse width distortion) 223 - 1 PRBS at 500 Mbps NOTES: 1. Minimum voltage at OUTP > 0.7 V; LED forward voltage and total series resistance must be considered if output is DC coupled to LED. 2. Default if TCSTART is floating. 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 4 Preliminary Information Minimum Product Specification 1.4.2 AC Electrical Characteristics - Limiting Amplifier VCCR = 3.05 to 3.55V or 4.7 to 5.5V, TA = -40C to +95C, unless otherwise noted. Table 1-6. AC Electrical Characteristics - Limiting Amplifier Symbol VIN(MIN) VI(MAX) Parameter Differential Input Sensitivity Input Overload Conditions Minimum Typical Maximum Units 2 - - mV BER < 10-12 at 1.25 Gbps with K28.5 pattern BER < 10-12, differential input 1200 - - BER < 10-12, single-ended input 600 - - - - 285 VRMS mV VN RMS Input Referred Noise VLOS LOS Programmable Range Differential inputs, 6.0 k RSTSET 8.4 k 5 - 55 mV HYS Signal Detect Hysteresis (electrical); signal detect level set to 20 mVPP 2 4 6 dB 4 - 100 mV RSSIpp Peak-to-peak received signal strength indicator range Excluding AC coupling capacitors - 4 - kHz DJ Deterministic Jitter K28.5 pattern at 500 Mbps - - 50 ps RJ Random Jitter 10 mVPP input - 3 - psRMS tr / tf Data Output Rise and Fall Times 20% to 80%; outputs terminated into 50; 10mVPP input - - 250 ps TLOS_ON Time from LOS state until LOS output is asserted LOS assert time after 1 VPP input signal is turned off; signal detect level set to 10 mV 2.3 - 80 s TLOS_OFF Time from non-LOS state until LOS is deasserted LOS deassert time after input crosses signal detect level; signal detect set to 10 mV with applied input signal of 20 mVPP 2.3 - 80 s 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential Preliminary Information Small-Signal -3dB Low Frequency Cutoff. BWLF 5 Product Specification 1.5 Safety Logic Timing VCC = 3.05 to 3.55V or 4.7 to 5.5V, TA = -40C to +95C, unless otherwise noted. Typical values are VCC = 3.3V, IPBOUT = 4mA, IMOD = 50mA. Table 1-7. Safety Logic Timing Symbol Parameter Conditions Minimum Typical Maximum Units DIS assert time Rising edge of DIS to fall of output signal below 10% of nominal (1) - 1 10 s t_on DIS negate time Falling edge of DIS to rise of output signal above 90% of nominal (1) - 0.4 1 ms t_init Time to initialize Includes reset of FAIL; from power on after Supply_OK or from negation of DIS during reset of FAIL condition - 4 300 ms t_wc Window comparator hold-off time Time during which the status of the fault detect comparators is ignored. 2 3 - ms t_fault LED fault time -- from fault condition to assertion of FAIL From occurrence of fault condition or when Supply_OK is beyond specified range - 16 100 s t_reset DIS time to start reset DIS pulse width required to initialize safety circuitry or reset a latched fault - - 10 s tVCC_OK Supply okay delay time Delay between supply_OK condition and when outputs are enabled - 900 - s Preliminary Information t_off NOTE: 1. With CPB = 47 nF. Figure 1-1. Safety Logic Simplified Block Diagram DIS SCB Output _Enable Fault_OK Normal V cc 3_OK Vcc _OK FAIL 3.3V_ONLY ~900 s typical ~2V TCSLOPE + - SCB Fault_OK S SET Q Normal Activate_Config_Settings R Configuration settings are not updated while TCSLOPE is pulled high, but are updated when TCSLOPE is at normal level CL R Q ~3 ms typical * Fault_OK indicates that no fault is detected at any of the fault sense nodes 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 6 Product Specification Table 1-8. Circuit Response to Single-Point Fault Conditions on Driver Pins Circuit Response to Over-voltage Condition or Short to VCC Pin Name Circuit Response to Under-Voltage Condition or Short to Ground Does not affect output power (some conditions can selectively enable/disable driver output). Does not affect output power (some conditions can selectively enable/disable driver output). VCC Outputs are disabled if VCC exceeds the VCC_okay (high level) threshold. If so, FAIL will be asserted. (1) Outputs are disabled if VCC voltage is below the VCC_okay (low level) threshold. If so, FAIL will be asserted. (1) Outputs are disabled if VCC3 exceeds the VCC3_okay (high level) threshold. If so, FAIL will be asserted. (1) Outputs are disabled if VCC3 voltage is below the VCC3_okay (low level) threshold. If so, FAIL will be asserted. (1) LED would remain in an optical one or zero condition. LED would remain in an optical one or zero condition. CPB Pre-bias current is turned off. Does not affect LED operation. A fault state occurs.(2) FAIL Does not affect LED operation. Does not affect LED operation. DIS Bias and modulation outputs are disabled and SVCC is opened. Does not affect LED operation (normal condition for circuit operation). No modulation current. A fault state occurs. (2) PBSET Pre-bias current is turned off. Does not affect LED power. A fault state occurs. (2) TCSTART Modulation current may increase depending on operating temperature and TCSLOPE setting. Modulation current may decrease depending on operating temperature and TCSLOPE setting. TCSLOPE Modulation current may decrease depending on operating temperature and TCSTART setting. Modulation current may increase depending on operating temperature and TCSTART setting. PBOUT The LED is turned off if connected to the LED cathode. A fault state occurs. (2) OUTP LED modulation is prevented and a fault state occurs. (2) A fault state occurs. (2) OUTN Does not affect LED operation. Does not affect LED operation. GNDO LED modulation is prevented and a fault state may occur. (2) Does not affect LED operation. SVCC Does not affect LED operation. The LED is turned off and a fault state occurs. (2) VCC3T DINp, DINm MODSET NOTES: 1. In this case a fault state will assert the FAIL output, but it is not latched. While the fault condition remains, the bias and modulation outputs are disabled and the switch at SVCC is open. No fault occurs if in Safety Circuit Bypass (SCB). 2. In this case a fault state will assert and latch the FAIL output, disable bias and modulation outputs and open the switch at SVCC. No fault occurs if in Safety Circuit Bypass (SCB). 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 7 Preliminary Information Config1-4 Product Specification Figure 1-2. M02097 Safety Logic Timing Characteristics SLOW RAMPING 3.3V Operation (DIS Low) HOT PLUG (DIS Low) 3.3V "OK" Supply VCC (1) 3.3V FAIL VCC3 t_init < 5 ms (3 ms typ.) Low DIS DIS Low t_init < 5 ms (3 ms typ.) Low FAIL Low LED Output LED Output Preliminary Information SLOW RAMPING 5V Operation (DIS Low) TRANSMITTER ENABLE 5V "OK" VCC Supply (1) 3.3V t_on < 1 ms (300 s typ.) VCC3 FAIL FAIL Low DIS t_init < 5 ms (3 ms typ.) Low High DIS Low Low LED Output LED Output TRANSMITTER DISABLE "OK" Supply Fault sense node such as PB OUT (1) FAIL Low RESPONSE TO FAULT Fault Occurs Normal t_off < 10 s (1 s typ.) Low High FAIL Low t_fault < 100 s (4 s typ.) High DIS LED Output 1. DIS Low Low LED Output Supply "OK" means both VCC and VCC3 are within their defined operating windows. NOTE: "LED Output" is equivalent to pre-bias current plus modulation current. 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 8 Product Specification Figure 1-3. M02097 Safety Logic Timing Characteristics (Continued) FAULT RESET ATTEMPT FAULT RECOVERY BEHAVIOR Fault sense node such as PB OUT Low Normal Fault Removed Fault sense node such as PB OUT Low High FAIL FAIL Low DIS t_reset 10 s DIS LED Output t_on < 1 ms (300 s typ.) LED Output 10 - 20 s 10 s (Does not turn on) Preliminary Information FAULT RESET ATTEMPT Fault sense node such as PB OUT FAIL Low t_init < 5 ms (3 ms typ.) DIS LED Output 1. 10 s Supply "OK" means both VCC and VCC3 are within their defined operating windows. NOTE: "LED Output" is equivalent to bias current plus modulation current. 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 9 Product Specification 1.6 Table 1-9. M02097 Configuration Logic M02097 Configuration Logic Config2 Config3 Config4 DIS/EN LOS=JAM/ NO_JAM LOS/ST SCB RxPOL TxPOL Special Config. 0 0 0 0 0 0 0 0 0 0 none 0 0 0 M 0 0 0 0 0 1 none 0 0 M 0 0 0 0 0 1 0 none 0 0 M M 0 0 0 0 1 1 none 0 0 1 1 0 0 0 1 0 0 none 0 0 0 1 0 0 0 1 0 1 none 0 0 1 0 0 0 0 1 1 0 none 0 0 M 1 0 0 0 1 1 1 none 0 0 1 M 0 0 0 0 0 0 SC1 0 M 0 0 0 0 1 0 0 0 none 0 M 0 M 0 0 1 0 0 1 none 0 M M 0 0 0 1 0 1 0 none 0 M M M 0 0 1 0 1 1 none 0 M 1 1 0 0 1 1 0 0 none 0 M 0 1 0 0 1 1 0 1 none 0 M 1 0 0 0 1 1 1 0 none 0 M M 1 0 0 1 1 1 1 none 0 M 1 M 0 0 1 0 0 0 SC2 M 0 0 0 0 1 0 0 0 0 none M 0 0 M 0 1 0 0 0 1 none M 0 M 0 0 1 0 0 1 0 none M 0 M M 0 1 0 0 1 1 none M 0 1 1 0 1 0 1 0 0 none M 0 0 1 0 1 0 1 0 1 none M 0 1 0 0 1 0 1 1 0 none M 0 M 1 0 1 0 1 1 1 none M 0 1 M 0 1 0 0 0 0 SC3 M M 0 0 0 1 1 0 0 0 none M M 0 M 0 1 1 0 0 1 none M M M 0 0 1 1 0 1 0 none M M M M 0 1 1 0 1 1 none M M 1 1 0 1 1 1 0 0 none M M 0 1 0 1 1 1 0 1 none 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential Preliminary Information Config1 10 Product Specification Table 1-9. M02097 Configuration Logic Config2 Config3 Config4 DIS/EN LOS=JAM/ NO_JAM LOS/ST SCB RxPOL TxPOL Special Config. M M 1 0 0 1 1 1 1 0 none M M M 1 0 1 1 1 1 1 none M M 1 M 0 1 1 0 0 0 SC4 1 1 0 0 1 0 0 0 0 0 none 1 1 0 M 1 0 0 0 0 1 none 1 1 M 0 1 0 0 0 1 0 none 1 1 M M 1 0 0 0 1 1 none 1 1 1 1 1 0 0 1 0 0 none 1 1 0 1 1 0 0 1 0 1 none 1 1 1 0 1 0 0 1 1 0 none 1 1 M 1 1 0 0 1 1 1 none 1 1 1 M 1 0 0 0 0 0 SC5 0 1 0 0 1 0 1 0 0 0 none 0 1 0 M 1 0 1 0 0 1 none 0 1 M 0 1 0 1 0 1 0 none 0 1 M M 1 0 1 0 1 1 none 0 1 1 1 1 0 1 1 0 0 none 0 1 0 1 1 0 1 1 0 1 none 0 1 1 0 1 0 1 1 1 0 none 0 1 M 1 1 0 1 1 1 1 none 0 1 1 M 1 0 1 0 0 0 SC5 1 0 0 0 1 1 0 0 0 0 none 1 0 0 M 1 1 0 0 0 1 none 1 0 M 0 1 1 0 0 1 0 none 1 0 M M 1 1 0 0 1 1 none 1 0 1 1 1 1 0 1 0 0 none 1 0 0 1 1 1 0 1 0 1 none 1 0 1 0 1 1 0 1 1 0 none 1 0 M 1 1 1 0 1 1 1 none 1 0 1 M 1 1 0 0 0 0 SC6 M 1 0 0 1 1 1 0 0 0 none 1 M 0 0 1 1 1 0 0 0 SC7 M 1 0 M 1 1 1 0 0 1 none 1 M 0 M 1 1 1 0 0 1 SC8 M 1 M 0 1 1 1 0 1 0 none 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential Preliminary Information Config1 11 Product Specification Table 1-9. M02097 Configuration Logic Config2 Config3 Config4 DIS/EN LOS=JAM/ NO_JAM LOS/ST SCB RxPOL TxPOL Special Config. 1 M M 0 1 1 1 0 1 0 SC9 M 1 M M 1 1 1 0 1 1 none 1 M M M 1 1 1 0 1 1 SC10 M 1 1 1 1 1 1 1 0 0 none 1 M 1 1 1 1 1 1 0 0 SC5 M 1 0 1 1 1 1 1 0 1 none 1 M 0 1 1 1 1 1 0 1 SC3 M 1 1 0 1 1 1 1 1 0 none 1 M 1 0 1 1 1 1 1 0 SC11 M 1 M 1 1 1 1 1 1 1 none M 1 1 M 1 1 1 0 0 0 SC12 1 M M 1 1 1 1 1 1 1 SC13 1 M 1 M 1 1 1 0 0 0 SC14 Preliminary Information Config1 KEY: 0, 1, M:0 = Logic low; 1 = Logic high; M = pin floating (pin goes to intermediate "mid-range" self-biased voltage DIS/EN:0 = DIS pin acts as Tx_Disable; 1 = DIS pin becomes Tx_Enable LOS=JAM / NO_JAM:0 = Jam outputs upon LOS; 1 = Do not jam outputs upon LOS LOS/ST:0 = LOS-ST pin is ST (goes high with signal detect); 1 = LOS-ST pin is high with LOS SCB:0=latched fault; 1=safety circuit bypass mode TxPOL and RxPOL:0 = default polarity; 1 = inverted polarity Special Config.:Refer to Special Configurations table for definition of special configuration modes Table 1-10. M02097 Special Configurations Special Config. # Special Config. Name SC1 - SC11 Test Modes SC12 DCRDIS SC13-14 Test Modes 02097-DSH-001-C Definition Internal Use Only; do not use Disables the DC restore in the limiting amplifier. Can pass DC signal through limiting amp, but offset at limiting amplifier input passes through to outputs. Internal Use Only; do not use Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 12 2.0 Pin Definitions Table 2-1. M02097 Pad / Pin Descriptions (1 of 2) QFN Pin Number Pin Name 1 RxOUTm Limiting amplifier inverting data output (PECL). Output is referenced to the Rx supply input (VCCR). 2 RxOUTp Limiting amplifier non-inverting data output (PECL). Output is referenced to the Rx supply input (VCCR). 3 VCCR Power supply for limiting amplifier circuitry (3.3V or 5V). 4 VCCT Power supply for LED driver circuitry (3.3V or 5V). 5 TCSLOPE Modulation temperature compensation slope. A resistor to ground sets the level of temperature compensation for the modulation current. Forcing this pin high (to 3.3V) causes the configuration logic to ignore configuration logic settings until this pin is released to its normal level (~1.25V). Temperature compensation is disabled if this pin is floating. 6 TCSTART A resistor to ground at this pin sets the temperature at which the modulation temperature compensation slope becomes active. Letting this pin float results in a start temperature of ~-40C. Grounding this pin disables temperature compensation. 7 DINp Transmitter positive Data Input. Internally terminated with 4 k to self-bias voltage of approximately VCC3T - 0.65V. Can be AC coupled. 8 DINm Transmitter negative Data Input. Internally terminated with 4 k to self-bias voltage of approximately VCC3T - 0.65V. Can be AC coupled. 9 FAIL Safety circuit fault indicator. Goes high when a safety logic fault is detected. The FAIL output is low when DIS is high. Open collector; 4.7 k to 10 k external pull-up required. 5V compatible when using a 5V supply. 10 DIS Disable control (TTL compatible). When high or left floating, the bias and modulation outputs are disabled. Set low for normal operation. 7 k internal pull-up to VCCT. 11 MODSET 12 NC No connect, leave floating. Do not connect to ground or VCC. 13 NC No connect, leave floating. Do not connect to ground or VCC. 14 PBSET 15 NC 16 PBOUT LED pre-bias current output. Connect to LED cathode with a 100 resistor between the LED anode and cathode. 17 GNDO Ground for modulation output stage. Connect directly to ground or can connect to ground through an inductor. 18 OUTP Transmitter positive modulation output. Draws current when DINp is high. Referenced to the SVCC (transmitter regulator output) voltage. 19 OUTN Transmitter negative modulation output. Draws current when DINp is low. Referenced to the SVCC (transmitter regulator output) voltage. 20 SVCC Internal power supply switch for LED. Provides redundant shutdown during a disable or fault condition. Modulation Current Adjust. Connect a resistor between this pin and ground to set LED modulation current. A resistor connected from this pin to ground sets the LED pre-bias current. Leave floating if pre-bias is not used. Not connected in package. Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 13 Preliminary Information 02097-DSH-001-C Function Pin Definitions Table 2-1. M02097 Pad / Pin Descriptions (2 of 2) QFN Pin Number Pin Name Function 21 VCC3T Internally regulated voltage for LED driver circuitry in 5V applications. Connect directly to supply to allow wider power supply tolerance in 3.3V-only applications (internal regulator not in use). Do not connect to power supply if VCC = 5V. 22 CPB 23 STSET Loss of signal threshold setting input. Connect a resistor between this pin and VCC3 to set loss of signal threshold. 24 VCC3R Internally regulated voltage for limiting amplifier circuitry in 5V applications. Connect directly to supply to allow wider power supply tolerance in 3.3V-only applications (internal regulator not in use). Do not connect to power supply if VCC = 5V. 25 RxINp Non-inverting limiting amplifier data input. Internally terminated with 2 k to self-bias voltage of approximately VCC3R - 0.5V. 26 RxINm Inverting limiting amplifier data input. Internally terminated with 2 k to self-bias voltage of approximately VCC3R - 0.5V. 27 Config1 28 Config2 29 Config3 30 Config4 31 LOS-ST 32 IREF Configuration logic input. These pins select LED driver and limiting amplifier configurations and test modes. Refer to Configuration Logic table (Table 1-9) for more information. Three level logic where nominal level is mid-range (VCC3T / 2) when floating. Limiting amplifier LOS or ST (signal detect) output (M02097-11 PECL, M02097-21 CMOS). Configuration logic selects whether output is to be LOS or ST. 5V compatible when using a 5V supply. Internal reference current. Must be connected to ground through a 12.4 k 1% resistor. Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 14 Preliminary Information 02097-DSH-001-C A capacitor at this pin sets the compensation for the pre-bias control. Connect a capacitor between this pin and VCC3 if pre-bias control is used. Can leave floating if not using pre-bias. Pin Definitions Figure 2-1. M02097 Package Pin-out (5x5mm MLF) 32 31 30 29 28 27 26 25 IREF LOS-ST Config4 Config3 Config2 Config1 RxINm RxINp RxOUTm VCC 3R 24 2 RxOUTp STSET 23 3 VCCR CPB 22 4 VCC T V CC3T 21 Preliminary Information 1 GND 5 TCSLOPE SV CC 20 6 TCSTART OUTN 19 7 DINp OUTP 18 8 DINm GNDO 17 FAIL DIS MODSET NC NC PBSET NC PBOUT 02097-DSH-001-C 9 10 11 12 13 14 15 16 Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 15 3.0 Functional Description 3.1 Overview The M02097 device is a highly integrated combined LED driver and limiting amplifier intended for applications to 500 Mbps. The part can be operated from a single 3.3V or 5V supply. Many features are user-adjustable, including the pre-bias current, modulation current, temperature compensation control of modulation current, loss of signal threshold, using jam or not on the Rx path and the Rx and Tx polarity. Figure 3-1. M02097 Block Diagram VCC3R VCCR STSET Threshold Setting Circuit Regulator with Bypass RxOUTp Output Buffer RxOUTm 2k Limiting Amplifier RxINp Vttr 2k RxINm Rx_Polarity LOS-ST PECL Offset Cancel Level Detect PECL (-11) LOS CMOS/TTL (-21) Comparator LOS-ST_sel LOS-to-JAM RSSI 3.3V Regulator with Bypass To Safety Logic Modulation Control TCSLOPE Iref DCR_Disable VCCT TCSTART Biasing To Safety Logic VCC3T SVCC MODSET DIN + 4k Vttx DIN- 4k Output Buffer Input Buffer Laser Driver OUTOUT+ GND0 Tx_Polarity Rx_Polarity Tx_Polarity CONFIG_1 CONFIG_2 Configuration Logic CONFIG_3 V CC VCC3 DCR_Disable CONFIG_4 LOS-ST_sel PBOUT SCB LOS-to-JAM Safety Circuitry with Latched Fault TX Disable LED Pre-Bias Control GND 02097-DSH-001-C PBSET CPB FAIL DIS RESET Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 16 Preliminary Information Safety circuitry is also included to provide a latched shut-down of LED bias and modulation current if a fault condition occurs. An internal VCC switch provides redundant shutdown of the LED current under a fault condition. Functional Description 3.2 Internal Regulator When operating from a 5V supply (VCC connected to +5V), an internal regulator provides a voltage of approximately 3.3V to the majority of the on-chip circuitry. The on-chip regulator is internally compensated, requiring no external components. When a 3.3V supply is used (VCC connected to 3.3V, or both VCC and VCC3 connected to 3.3V), internal logic configures the device for 3.3V operation and the regulator is switched to a lowresistance mode. The device decides whether or not the internal regulator is enabled using internal sensing logic, the sensing logic also determines whether the device safety circuitry needs to monitor for proper +5V supply voltage. 3.3 Driver Inputs 3.4 Driver Output Stage The output stage incorporates feedback to maintain performance over the range of LED modulation current. The output stage is nominally configured to drive an output load of ~5 with shunt RC compensation for LEDs. OUTP should be connected directly to the LED cathode. This will result in the optimum pulse response while allowing the maximum modulation current to be achieved when the output is DC coupled to the load. The LED driver output stage is separately grounded from the rest of the circuitry (through GNDO) for optimum performance and control of output characteristics. The output can also be AC coupled to the LED. LED modulation current is controlled by adjusting current at MODSET. The modulation current can be temperature compensated by setting slope through the TCSLOPE pin and TCSTART sets the temperature at which the temperature compensation begins to operate. 3.5 Safety Circuitry Comparators at PBSET, MODSET, PBOUT OUTP, and CPB will assert the FAIL output, indicating that a fault condition has occurred. This condition is latched and requires DIS to be toggled or power cycling before reset occurs. SVCC is opened during a fault or disable condition. By setting DIS high, the bias and modulation output currents are disabled. DIS will disable LED bias and modulation current if left floating. DIS must be forced to a low state to enable the outputs. When safety circuit bypass (SCB) mode is enabled, FAIL will indicate a fault condition, but the outputs will not be disabled under a fault condition. Only the DIS pin will shutdown the outputs when in SCB mode. 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 17 Preliminary Information The inputs to the data buffer are self-biased through resistors to an internal reference of approximately VCC - 1.3V. Both CML and PECL input signals can be AC coupled to the M02097. AC coupling is recommended when using the internal regulator (VCC = 5V), though external level-shifting may be used if DC coupling is desired with 5V supply. 4.0 Package Specification Figure 4-1. QFN32 Package Information Preliminary Information Note: View is for a 28 pin package. All dimensions in the tables apply for the 32 pin package 3.15 3.15 3.30 3.30 3.45 3.45 0.90 0.70 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 18 www.mindspeed.com General Information: Telephone: (949) 579-3000 Headquarters - Newport Beach 4000 MacArthur Blvd., East Tower Newport Beach, CA 92660 Information in this document is provided in connection with Mindspeed Technologies(R) ("Mindspeed(R)") products. These materials are provided by Mindspeed as a service to its customers and may be used for informational purposes only. Except as provided in Mindspeed's Terms and Conditions of Sale for such products or in any separate agreement related to this document, Mindspeed assumes no liability whatsoever. Mindspeed assumes no responsibility for errors or omissions in these materials. Mindspeed may make changes to specifications and product descriptions at any time, without notice. Mindspeed makes no commitment to update the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to its specifications and product descriptions. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, RELATING TO SALE AND/OR USE OF MINDSPEED PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. MINDSPEED FURTHER DOES NOT WARRANT THE ACCURACY OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN THESE MATERIALS. MINDSPEED SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS, WHICH MAY RESULT FROM THE USE OF THESE MATERIALS. Mindspeed products are not intended for use in medical, lifesaving or life sustaining applications. Mindspeed customers using or selling Mindspeed products for use in such applications do so at their own risk and agree to fully indemnify Mindspeed for any damages resulting from such improper use or sale. 02097-DSH-001-C Mindspeed Technologies(R) Preliiminary Information/Mindspeed Proprietary and Confidential 19 Preliminary Information (c) 2006 Mindspeed Technologies(R), Inc. All rights reserved.