19-1815; Rev 1; 3/09 KIT ATION EVALU E L B AVAILA Low-Jitter, 10-Port LVDS Repeater The MAX9150 low-jitter, 10-port, low-voltage differential signaling (LVDS) repeater is designed for applications that require high-speed data or clock distribution while minimizing power, space, and noise. The device accepts a single LVDS input and repeats the signal at 10 LVDS outputs. Each differential output drives a total of 50Ω, allowing point-to-point distribution of signals on transmission lines with 100Ω terminations on each end. Ultra-low 120ps (max) peak-to-peak jitter (deterministic and random) ensures reliable communication in highspeed links that are highly sensitive to timing error, especially those incorporating clock-and-data recovery, or serializers and deserializers. The high-speed switching performance guarantees 400Mbps data rate and less than 100ps skew between channels while operating from a single +3.3V supply. Supply current at 400Mbps is 160mA (max) and is reduced to 60µA (max) in low-power shutdown mode. Inputs and outputs conform to the EIA/TIA-644 LVDS standard. A fail-safe feature sets the outputs high when the input is undriven and open, terminated, or shorted. The MAX9150 is available in a 28-pin TSSOP package. Refer to the MAX9110/MAX9112 and MAX9111/MAX9113 data sheets for LVDS line drivers and receivers. ________________________Applications Features ♦ Ultra-Low 120psp-p (max) Total Jitter (Deterministic and Random) ♦ 100ps (max) Skew Between Channels ♦ Guaranteed 400Mbps Data Rate ♦ 60µA Shutdown Supply Current ♦ Conforms to EIA/TIA-644 LVDS Standard ♦ Single +3.3V Supply ♦ Fail-Safe Circuit Sets Output High for Undriven Inputs ♦ High-Impedance LVDS Input when VCC = 0V Ordering Information PART TEMP. RANGE PIN-PACKAGE MAX9150EUI -40°C to +85°C 28 TSSOP Pin Configuration TOP VIEW Cellular Phone Base Stations MAX9150 Add/Drop Muxes Digital Crossconnects Network Switches/Routers Backplane Interconnect Clock Distribution Typical Application Circuit LVDS MAX9150 1 100Ω 100Ω RX LVDS TX BACKPLANE OR CABLE 100Ω 10 MAX9110 100Ω 100Ω MAX9111 RX DO2+ 1 28 DO3+ DO2- 2 27 DO3- DO1+ 3 26 DO4+ DO1- 4 25 DO4- PWRDN 5 24 DO5+ GND 6 23 DO5- RIN+ 7 22 VCC RIN- 8 21 GND GND 9 20 DO6+ VCC 10 19 DO6- DO10+ 11 18 DO7+ DO10- 12 17 DO7- DO9+ 13 16 DO8+ DO9- 14 15 DO8- MAX9111 TSSOP ________________________________________________________________ Maxim Integrated Products 1 For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX9150 General Description MAX9150 Low-Jitter, 10-Port LVDS Repeater ABSOLUTE MAXIMUM RATINGS VCC to GND ...........................................................-0.3V to +4.0V RIN+, RIN- to GND ................................................-0.3V to +4.0V PWRDN to GND..........................................-0.3V to (VCC + 0.3V) DO_+, DO_- to GND..............................................-0.3V to +4.0V Short-Circuit Duration (DO_+, DO_-) .........................Continuous Continuous Power Dissipation (TA = +70°C) 28-Pin TSSOP (derate 12.8mW/°C above +70°C) .....1026mW Storage Temperature.........................................-65°C to +150°C Maximum Junction Temperature .....................................+150°C Operating Temperature Range...........................-40°C to +85°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (VCC = +3.0V to +3.6V, RL = 50Ω ±1%, |VID| = 0.1V to 1.0V, VCM = |VID / 2| to 2.4V - |VID / 2|, PWRDN = high, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 0.8 V 15 µA 100 mV P W RD N Input High Voltage VIH Input Low Voltage VIL Input Current IIN 2.0 VIN = VCC and 0V V -15 LVDS INPUT Differential Input High Threshold VTH Differential Input Low Threshold VTL Single-Ended Input Current IIN 7 -100 -7 mV PWRDN = high or low; VRIN+ = 2.4V, RIN- = open or RIN+ = open, VRIN- = 2.4V -6 +1 PWRDN = high or low; VRIN+ = 0V, RIN- = open or RIN+ = open, VRIN- = 0V -18 +1 +12 µA Power-Off Single-Ended Input Current IIN(OFF) VCC = 0V; VRIN+ = 2.4V, RIN- = open or RIN+ = open, VRIN- = 2.4V -1 Differential Input Resistance RIDIFF VCC = +3.6V or 0V, PWRDN = high or low 5 µA kΩ LVDS DRIVER Differential Output Voltage VOD Figure 1 ΔVOD Figure 1 VOS Figure 1 Change in VOS Between Complementary Output States ΔVOS Figure 1 Output High Voltage VOH Figure 1 Output Low Voltage VOL Figure 1 0.7 VCC = +3.6V or 0V, PWRDN = high or low 150 RIN+, RIN- undriven with short, open, or 100Ω termination 250 Change in VOD Between Complementary Output States Offset (Common-Mode) Voltage Differential Output Resistance (Note 2) Differential High Output Voltage in Fail-Safe Output Short-Circuit Current 2 RODIFF VOD+ ISC VID = +100mV, VDO_+ = GND VID = -100mV, VDO_- = GND 250 0.90 320 1.25 450 mV 25 mV 1.375 V 25 mV 1.6 V V 240 -15 _______________________________________________________________________________________ 330 Ω 450 mV mA Low-Jitter, 10-Port LVDS Repeater (VCC = +3.0V to +3.6V, RL = 50Ω ±1%, |VID| = 0.1V to 1.0V, VCM = |VID / 2| to 2.4V - |VID / 2|, PWRDN = high, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25°C.) (Note 1) PARAMETER Single-Ended Output HighImpedance Current SYMBOL IOZ CONDITIONS MIN TYP MAX UNITS VCC = 0V, PWRDN = GND; VDO_+ = 3.6V or 0V, DO_- = open; or VDO_- = 3.6V or 0V, DO_+ = open -1 +1 µA PWRDN = GND; VDO_+ = 3.6V or 0V, DO_- = open; or VDO_- = 3.6V or 0V, DO_+ = open -1 +1 µA SUPPLY CURRENT Supply Current (Note 2) ICC Power-Down Supply Current ICCZ DC 200MHz (400Mbps) Figure 2 100 140 130 160 PWRDN = GND 60 mA µA AC ELECTRICAL CHARACTERISTICS (VCC = +3.0V to +3.6V, RL = 50Ω ±1%, CL = 5pF, |VID| = 0.2V to 1.0V, VCM = |VID / 2| to 2.4V - |VID / 2|, PWRDN = high, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25°C.) (Notes 2–5) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Differential Propagation Delay High-to-Low tPHLD Figures 2, 3 1.6 2.2 3.5 ns Differential Propagation Delay Low-to-High tPLHD Figures 2, 3 1.6 2.2 3.5 ns Total Peak-to-Peak Jitter (Random and Deterministic) (Note 6) tJPP Figures 2, 3 20 120 psp-p Differential Output-to-Output Skew (Note 7) tSKOO Figures 2, 3 40 100 ps Differential Part-to-Part Skew (Note 8) tSKPP Figures 2, 3 1.9 ns TTLH, tTHL Figures 2, 3 150 450 ps fMAX Figures 2, 3 400 Rise/Fall Time Maximum Input Frequency (Note 9) 220 Mbps _______________________________________________________________________________________ 3 MAX9150 DC ELECTRICAL CHARACTERISTICS (continued) AC ELECTRICAL CHARACTERISTICS (continued) (VCC = +3.0V to +3.6V, RL = 50Ω ±1%, CL = 5pF, |VID| = 0.2V to 1.0V, VCM = |VID / 2| to 2.4V - |VID / 2|, PWRDN = high, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25°C.) (Notes 2–5) PARAMETER SYMBOL Power-Down Time tPD Power-Up Time tPU CONDITIONS MIN TYP Figures 4, 5 MAX UNITS 100 ns 100 µs Note 1: Current-into-device pins is defined as positive. Current-out-of-device pins is defined as negative. All voltages are referenced to ground, except VTH, VTL, VOD, and ΔVOD. Note 2: Guaranteed by design, not production tested. Note 3: AC parameters are guaranteed by design and characterization. Note 4: CL includes scope probe and test jig capacitance. Note 5: Signal generator conditions, unless otherwise noted: frequency = 200MHz, 50% duty cycle, RO = 50Ω, tR = 1ns, and tF = 1ns (0% to 100%). Note 6: Signal generator conditions for tJPP: VOD = 200mV, VOS = 1.2V, frequency = 200MHz, 50% duty cycle, RO = 50Ω, tR = 1ns, and tF = 1ns (0% to 100%. tJPP includes pulse (duty cycle) skew. Note 7: tSKOO is the magnitude difference in differential propagation delay between outputs for a same-edge transition. Note 8: tSKPP is the |MAX - MIN| differential propagation delay. Note 9: Device meets VOD and AC specifications while operating at fMAX. Typical Operating Characteristics (Figure 2, VCC = +3.3V, RL = 50Ω, CL = 5pF, IVIDI = 200mV, VCM = 1.2V, fIN = 50MHz, TA = +25°C, unless otherwise noted.) 120 110 100 2.30 tPLHD 2.25 2.20 tPHLD 2.15 0.1 1 100 10 INPUT FREQUENCY (MHz) 1000 MAX9150 toc03 2.35 2.30 tPLHD 2.25 2.20 tPHLD 2.15 2.10 2.10 90 4 2.35 2.40 DIFFERENTIAL PROPAGATION DELAY (ns) 130 MAX9150 toc02 140 2.40 DIFFERENTIAL PROPAGATION DELAY (ns) MAX9150 toc01 150 DIFFERENTIAL PROPAGATION DELAY vs. OUTPUT LOAD DIFFERENTIAL PROPAGATION DELAY vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. FREQUENCY SUPPLY CURRENT (mA) MAX9150 Low-Jitter, 10-Port LVDS Repeater 3.0 3.1 3.2 3.3 VCC (V) 3.4 3.5 3.6 50 60 70 80 RL (Ω) _______________________________________________________________________________________ 90 100 Low-Jitter, 10-Port LVDS Repeater (Figure 2, VCC = +3.3V, RL = 50Ω, CL = 5pF, IVIDI = 200 mV, VCM = 1.2V, fIN = 50MHz, TA = +25°C, unless otherwise noted.) 2.35 tPLHD 2.30 2.25 tPHLD 2.20 2.15 TRANSITION TIME vs. SUPPLY VOLTAGE H 30 G 20 215 210 TRANSITION TIME (ps) 2.40 40 MAX9150 toc05 DIFFERENTIAL OUTPUT-TO-OUTPUT SKEW (ps) MAX9150 toc04 2.45 B A, E 10 F, I D 0 C -10 1.0 1.5 2.0 2.5 205 200 195 tTHL 185 3.0 3.1 3.2 VCM (V) 3.3 3.4 3.5 3.0 3.6 3.1 3.2 220 210 500 TRANSITION TIME (ps) tTLH 3.5 3.6 tTHL 200 MAX9150 toc08 600 MAX9150 toc07 230 3.4 TRANSITION TIME vs. CAPACITANCE TRANSITION TIME vs. OUTPUT LOAD 240 3.3 VCC (V) VCC (V) tTLH 400 tTHL 300 200 190 100 180 50 60 70 80 90 5 100 7 9 11 13 15 CL (pF) RL (Ω) DIFFERENTIAL OUTPUT vs. OUTPUT LOAD DIFFERENTIAL OUTPUT vs. SUPPLY VOLTAGE 325 320 315 MAX9150 toc10 330 570 DIFFERENTIAL OUTPUT (mV) 335 MAX9150 toc09 0.5 TRANSITION TIME (ps) 0 tTLH 190 A = D02 - D01 B = D03 - D01 C = D04 - D01 D = D05 - D01 E = D06 - D01 F = D07 - D01 G = D08 - D01 H = D09 - D01 I = D010 - D01 -20 2.10 DIFFERENTIAL OUTPUT (mV) DIFFERENTIAL PROPAGATION DELAY (ns) 2.50 DIFFERENTIAL OUTPUT-TO-OUTPUT SKEW vs. SUPPLY VOLTAGE MAX9150 toc06 DIFFERENTIAL PROPAGATION DELAY vs. COMMON-MODE VOLTAGE 520 470 420 370 320 270 310 3.0 3.1 3.2 3.3 VCC (V) 3.4 3.5 3.6 50 60 70 80 90 100 RL (Ω) _______________________________________________________________________________________ 5 MAX9150 Typical Operating Characteristics (continued) Low-Jitter, 10-Port LVDS Repeater MAX9150 Pin Description PIN NAME FUNCTION 1, 3, 11, 13, 16, 18, 20, 24, 26, 28 DO2+, DO1+, DO10+, DO9+, DO8+, DO7+, DO6+, DO5+, DO4+, DO3+ 2, 4, 12, 14, 15, 17, 19, 23, 25, 27 DO2-, DO1-, DO10-, DO9-, DO8-, DO7-, DO6-, DO5-, DO4-, DO3- 5 PWRDN 6, 9, 21 GND Ground 10, 22 VCC Power. Bypass each VCC pin to GND with 0.1µF and 1nF ceramic capacitors. 7 RIN+ 8 RIN- LVDS Receiver Inputs. RIN+ and RIN- are high-impedance inputs. Connect a resistor from RIN+ to RIN- to terminate the input signal. Differential LVDS Outputs. Connect a 100Ω resistor across each of the output pairs (DO_+ and DO_-) adjacent to the IC, and connect a 100Ω resistor at the input of the receiving circuit. Power Down. Drive PWRDN low to disable all outputs and reduce supply current to 60µA. Drive PWRDN high for normal operation. Detailed Description The LVDS interface standard is a signaling method intended for point-to-point communication over a controlled impedance medium, as defined by the ANSI/TIA/EIA-644 and IEEE 1596.3 standards. The LVDS standard uses a lower voltage swing than other common communication standards, achieving higher data rates with reduced power consumption while reducing EMI emissions and system susceptibility to noise. The MAX9150 is a 400Mbps, 10-port LVDS repeater intended for high-speed, point-to-point, low-power applications. This device accepts an LVDS input and repeats it on 10 LVDS outputs. The device is capable of detecting differential signals as low as 100mV and as high as 1V within a 0 to 2.4V input voltage range. The LVDS standard specifies an input voltage range of 0 to 2.4V referenced to ground. The MAX9150 outputs use a current-steering configuration to generate a 5mA to 9mA output current. This current-steering approach induces less ground bounce and no shoot-through current, enhancing noise margin and system speed performance. The driver outputs are short-circuit current limited, and are high impedance (to ground) when PWRDN = low or the device is not powered. The outputs have a typical differential resistance of 240Ω. The MAX9150 current-steering architecture requires a resistive load to terminate the signal and complete the 6 transmission loop. Because the device switches the direction of current flow and not voltage levels, the output voltage swing is determined by the total value of the termination resistors multiplied by the output current. With a typical 6.4mA output current, the MAX9150 produces a 320mV output voltage when driving a transmission line terminated at each end with a 100Ω termination resistor (6.4mA x 50Ω = 320mV). Logic states are determined by the direction of current flow through the termination resistors. Fail-Safe Fail-safe is a receiver feature that puts the output in a known logic state (high) under certain fault conditions. The MAX9150 outputs are differential high when the inputs are undriven and open, terminated, or shorted (Table 1). Table 1. Input/Output Function Table INPUT, VID OUTPUTS, VOD +100mV High -100mV Low Open High Short Terminated Undriven Note: VID = RIN+ - RIN-, VOD = DO_+ - DO_High = 450mV > VOD > 250mV Low = -250mV > VOD > -450mV _______________________________________________________________________________________ High High Low-Jitter, 10-Port LVDS Repeater Supply Bypassing Bypass each of the VCC pins with high-frequency surface-mount ceramic 0.1µF and 1nF capacitors in parallel as close to the device as possible, with the smaller valued capacitor closest to the VCC pins. Differential Traces Output trace characteristics affect the performance of the MAX9150. Use controlled impedance traces to match trace impedance to both the transmission medium impedance and termination resistor. Ensure that noise couples as common mode by running the differential traces close together. Reduce skew by matching the electrical length of the traces. Excessive skew can result in a degradation of magnetic field cancellation. Maintain the distance between the differential traces to avoid discontinuities in differential impedance. Avoid 90° turns and minimize the number of vias to further prevent impedance discontinuities. Cables and Connectors Transmission media should have a controlled differential impedance of 100Ω. Use cables and connectors that have matched differential impedance to minimize impedance discontinuities. Avoid the use of unbalanced cables, such as ribbon or simple coaxial cable. Balanced cables, such as twisted pair, offer superior signal quality and tend to generate less EMI due to canceling effects. Balanced cables tend to pick up noise as common mode, which is rejected by the LVDS receiver. Termination Termination resistors should match the differential characteristic impedance of the transmission line. Since the MAX9150 has current-steering devices, an output voltage will not be generated without a termination resistor. Output voltage levels are dependent upon the value of the total termination resistance. The MAX9150 produces LVDS output levels for point-to-point links that are double terminated (100Ω at each end). With the typical 6.4mA output current, the MAX9150 produces an output voltage of 320mV when driving a transmission line terminated at each end with a 100Ω termination resistor (6.4mA x 50Ω = 320mV). Termination resistance values may range between 90Ω and 150Ω, depending on the characteristic impedance of the transmission medium. Minimize the distance between the output termination resistor and the corresponding MAX9150 transmitter output. Use ±1% surface-mount resistors. Minimize the distance between the input termination resistor and the MAX9150 receiver input. Use a ±1% surface-mount resistor. Chip Information PROCESS : CMOS Test Circuits and Timing Diagrams DO1+ MAX9150 25Ω VOD VOS 25Ω 50Ω DO1- DO10+ RIN+ GENERATOR RIN- 25Ω VOD 50Ω VOS 25Ω DO10- Figure 1. Driver-Load Test Circuit _______________________________________________________________________________________ 7 MAX9150 Applications Information Low-Jitter, 10-Port LVDS Repeater MAX9150 Test Circuits and Timing Diagrams (continued) CL 5pF MAX9150 DO1+ RL 50Ω DO1- CL 5pF 50Ω CL 5pF RIN+ GENERATOR DO10+ RINRL 50Ω 50Ω DO10- CL 5pF Figure 2. Repeater Propagation Delay and Transition Time Test Circuit RIN0 VCM DIFFERENTIAL VID VCM RIN+ tPLHD tPHLD 80% 50% O 80% VDIFF = (VDO_+) - (VDO_-) O 50% 20% 20% tTLH tTHL Figure 3. Propagation Delay and Transition Time Waveforms 8 _______________________________________________________________________________________ Low-Jitter, 10-Port LVDS Repeater CL 5pF DO1+ RL 25Ω MAX9150 RL 25Ω DO1- CL 5pF 1.2V 1.1V CL 5pF RIN+ 1.0V 1.1V DO10+ RL 25Ω RIN- 1.0V GENERATOR RL 25Ω DO10- CL 5pF PWRDN 1.2V 50Ω Figure 4. Power-Up/Down Delay Test Circuit 3.0V PWRDN 1.5V 1.5V tPD tPU O VOH 50% VDO_+ WHEN VID = +100mV VDO_- WHEN VID = -100mV 50% 1.2V 1.2V VDO_+ WHEN VID = -100mV VDO_- WHEN VID = +100mV 50% 50% tPU tPD VOL Figure 5. Power-Up/Down Delay Waveform Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 28 TSSOP U28-4 21-0066 _______________________________________________________________________________________ 9 MAX9150 Test Circuits and Timing Diagrams (continued) MAX9150 Low-Jitter, 10-Port LVDS Repeater Revision History REVISION NUMBER REVISION DATE 0 10/00 Initial release — 1 3/09 Replaced the obsolete Rev C package outline drawing with the Package Information table 9 DESCRIPTION PAGES CHANGED Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.