NB3N51034 3.3V, Crystal to 100MHz/ 200MHz Quad HCSL/LVDS Clock Generator The NB3N51034 is a high precision, low phase noise clock generator that supports spread spectrum designed for PCI Express applications. This device takes a 25 MHz fundamental mode parallel resonant crystal and generates 4 differential HCSL/LVDS outputs at 100 MHz or 200 MHz (See Figure 8 for LVDS interface). The NB3N51034 provides selectable spread options of −0.5%, −1.0%, −1.5%, for applications demanding low Electromagnetic Interference (EMI) as well as optimum performance with no spread option. http://onsemi.com MARKING DIAGRAM NB3N 1034 ALYWG G Features • • • • • • • Uses 25 MHz Fundamental Mode Parallel Resonant Crystal TSSOP−20 Power Down Mode DT SUFFIX CASE 948E 4 Low Skew HCSL or LVDS Outputs A = Assembly Location OE Tri−States Outputs L = Wafer Lot Spread of −0.5%, −1.0%, −1.5% and No Spread Y = Year PCIe Gen 1, Gen 2, Gen 3 Compliant W = Work Week G = Pb−Free Package Phase Noise (SS OFF) @ 100 MHz: (Note: Microdot may be in either location) Offset Noise Power 100 Hz −110 dBc/Hz ORDERING INFORMATION 1 kHz −123 dBc/Hz See detailed ordering and shipping information in the package 10 kHz −134 dBc/Hz dimensions section on page 10 of this data sheet. 100 kHz −137 dBc/Hz 1 MHz −138 dBc/Hz 10 MHz −154 dBc/Hz • Operating Supply Voltage Range 3.3 V ±5% • Computing and Peripherals • Industrial Temperature Range −40°C to +85°C • Industrial Equipment • Functionally Compatible with IDT557−05, • PCIe Clock Generation Gen 1, Gen 2 and Gen 3 IDT5V41066, IDT5V41236 with enhanced performance End Products • These are Pb−Free Devices • Switch and Router Applications • Set Top Box, LCD TV • Networking • Servers, Desktop Computers • Consumer • Automated Test Equipment VDD S0 S1 S2 PD Spread Spectrum Circuit X1/CLK 25 MHz Clock or Crystal Clock Buffer Crystal Oscillator Charge Pump Phase Detector VCO X2 BN VDD = VDDODA = VDDXD GND = GNDODA = GNDXD GND Figure 1. NB3N51034 Simplified Logic Diagram © Semiconductor Components Industries, LLC, 2014 June, 2014 − Rev. 2 1 OE HCSL Output CLK0 CLK0 HCSL Output CLK1 CLK1 HCSL Output CLK2 CLK2 HCSL Output CLK3 CLK3 IREF Publication Order Number: NB3N51034/D NB3N51034 VDDXD 1 20 CLK0 S0 2 19 CLK0 S1 3 18 CLK1 S2 4 17 CLK1 X1/CLK 5 16 GNDODA X2 6 15 VDDODA PD 7 14 CLK2 OE 8 13 CLK2 GNDXD 9 12 CLK3 10 11 CLK3 IREF Figure 2. Pin Configuration (Top View) Table 1. PIN DESCRIPTION Pin Symbol I/O Description 1 VDDXD Power 2 S0 Input LVTTL/LVCMOS frequency select input 0. Internal pullup resistor to VDDXD. See output select table 2 for details. 3 S1 Input LVTTL/LVCMOS frequency select input 1. Internal pullup resistor to VDDXD. See output select Table 2 for details. 4 S2 Input LVTTL/LVCMOS frequency select input 2. Internal pullup resistor to VDDXD. See output select Table 2 for details. 5 X1/CLK Input Crystal interface or single−ended reference clock input. 6 X2 Output 7 PD Input LVTTL/LVCMOS power down input. Assert this pin LOW to enter power down mode. Internal pull−up resistor to VDDXD. 8 OE Input Output enable. Tri−state output (High=enable outputs, Low=disable outputs). Internal pull−up resistor. Connect to a +3.3 V source. Crystal interface. Float this pin for reference clock input CLK. 9 GNDXD Power Connect to digital circuit ground. 10 IREF Output Precision resistor attached to this pin is connected to the internal current reference. 11 CLK3 HCSL or LVDS Output Inverted clock output. (For LVDS levels see Figure 8) 12 CLK3 HCSL or LVDS Output Noninverted clock output. (For LVDS levels see Figure 8) 13 CLK2 HCSL or LVDS Output Inverted clock output. (For LVDS levels see Figure 8) 14 CLK2 HCSL or LVDS Output Noninverted clock output. (For LVDS levels see Figure 8) 15 VDDODA Power Connect to a +3.3 V analog source. 16 GNDODA Power Output and analog circuit ground. 17 CLK1 HCSL or LVDS Output Inverted clock output. (For LVDS levels see Figure 8) 18 CLK1 HCSL or LVDS Output Noninverted clock output. (For LVDS levels see Figure 8) 19 CLK0 HCSL or LVDS Output Inverted clock output. (For LVDS levels see Figure 8) 20 CLK0 HCSL or LVDS Output Noninverted clock output. (For LVDS levels see Figure 8) http://onsemi.com 2 NB3N51034 Recommended Crystal Parameters Table 2. OUTPUT FREQUENCY AND SPREAD SPECTRUM SELECT TABLE S2* S1* S0* Spread% Spread Type Output Frequency 0 0 0 −0.5 Down 100 0 0 1 −1.0 Down 100 0 1 0 −1.5 Down 100 0 1 1 No Spread N/A 100 1 0 0 −0.5 Down 200 1 0 1 −1.0 Down 200 1 1 0 −1.5 Down 200 1 1 1 No Spread N/A 200 Crystal Frequency Load Capacitance Shunt Capacitance, C0 Equivalent Series Resistance Initial Accuracy at 25 °C Temperature Stability Aging Fundamental AT−Cut 25 MHz 16−20 pF 7 pF Max 50 W Max ±20 ppm ±30 ppm ±20 ppm *Pins S2, S1 and S0 default high when left open. Table 3. ATTRIBUTES Characteristic Value Internal Input Default State Resistor (OE, Sx, PD) ESD Protection Human Body Model Moisture Sensitivity, Indefinite Time Out of Dray Pack (Note 1) Flammability Rating Oxygen Index: 28 to 34 Transistor Count 110 kW 2 kV Level 1 UL 94 V−0 @ 0.125 in 132,000 Meets or exceeds JEDEC Spec EIA/JESD78 IC Latchup Test 1. For additional information, see Application Note AND8003/D. http://onsemi.com 3 NB3N51034 Table 4. MAXIMUM RATINGS (Note 2) Symbol Parameter Rating Units VDD Positive Power Supply with respect to GND (VDDXD and VDDODA) 4.6 V VI Input Voltage with respect to GND (VIN) −0.5 V to VDD+0.5 V V TA Operating Temperature Range −40 to +85 °C Tstg Storage Temperature Range −65 to +150 °C qJA Thermal Resistance (Junction−to−Ambient) (Note 3) 70 61 °C/W °C/W qJC Thermal Resistance (Junction−to−Case) 50 °C/W Tsol Wave Solder 265 °C 0 lfpm 500 lfpm Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 2. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and not valid simultaneously. If stress limits are exceeded device functional operation is not implied, damage may occur and reliability may be affected. 3. JEDEC standard multilayer board − 2S2P (2 signal, 2 power). Table 5. DC CHARACTERISTICS (VDD = 3.3 V ±5%, GND = 0 V, TA = −40°C to +85°C, Note 4) Symbol Characteristic Min Typ Max Unit 3.135 3.3 3.465 V VDD Power Supply Voltage (VDDXD and VDDODA) GND Power Supply Ground (GNDXD and GNDODA) IDD Power Supply Current, 200 MHz output, −1.5% spread IDDOE IDDPD VIH Input HIGH Voltage (X1/CLK, S0, S1, S2 and OE) 2000 VDD + 300 mV VIL Input LOW Voltage (X1/CLK, S0, S1, S2 and OE) GND − 300 800 mV Vmax Absolute Maximum Output Voltage (Notes 5, 6) 1150 mV Vmin Absolute Minimum Output Voltage (Notes 5, 7) −300 Vrb Ringback Voltage (Notes 8, 9) −100 100 mV VOH Output High Voltage (Note 5) 660 850 mV VOL Output Low Voltage (Note 5) −150 27 mV VCROSS Absolute Crossing Voltage (Notes 5, 9, 10) 250 550 mV DVCROSS Total Variation of VCROSS (Notes 5, 9, 11) 140 mV 0 V 135 mA Power Supply Current when OE is Set Low 60 mA Power Supply Current (PD = Low, no load) 1.5 mA mV NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. 4. VDDXD and VDDODA power pins must be shorted to power supply voltage VDD and GNDXD and GNDODA ground pins must be shorted to power supply ground GND. Measurement taken with outputs terminated with RS = 33.2 W, RL = 50 W, with test load capacitance of 2 pF and current biasing resistor set at 475 W. See Figure 7. Guaranteed by characterization. 5. Measurement taken from single-ended waveform 6. Defined as the maximum instantaneous voltage value including positive overshoot 7. Defined as the maximum instantaneous voltage value including negative overshoot 8. Measurement taken from differential waveform 9. Measured at crossing point where the instantaneous voltage value of the rising edge of CLKx+ equals the falling edge of CLKx-. 10. Refers to the total variation from the lowest crossing point to the highest, regardless of which edge is crossing. Refers to all crossing points for this measurement. 11. Defined as the total variation of all crossing voltage of rising CLKx+ and falling CLKx-. This is maximum allowed variance in the VCROSS for any particular system. http://onsemi.com 4 NB3N51034 Table 6. AC CHARACTERISTICS (VDD = 3.3 V ±5%, GND = 0 V, TA = −40°C to +85°C; Note 12) Characteristic Symbol Min fCLKIN Clock/Crystal Input Frequency fCLKOUT Output Clock Frequency fNOISE Phase−Noise Performance SS OFF tJIT(F) Phase RMS Jitter, Integration Range 12 kHz to 20 MHz fMOD Spread Spectrum Modulation Frequency fCLKOUT = 100 MHz @ 100 Hz offset from carrier @ 1 kHz offset from carrier @ 10 kHz offset from carrier @ 100 kHz offset from carrier @ 1 MHz offset from carrier @ 10 MHz offset from carrier Typ Max 25 MHz 100/200 MHz dBc/Hz −110 −123 −134 −137 −138 −154 0.4 30 3rd Unit Harmonic 31.5 ps 33.33 −10 kHz SSCRED Spectral Reduction, fCLKOUT of 100 MHz with −0.5% spread, (Note 13) dB tSKEW Within Device Output to Output Skew Eppm Frequency Synthesis Error, All Outputs tSPREAD Spread Spectruction Transition Time (Stablization Time After Spread Spectrum Changes) tOE Output Enable/Disable Time (All outputs) (Note 14) tDUTY_CYCLE Output Clock Duty Cycle (Measured at cross point) 45 50 55 % tR Output Risetime (Measured from 175 mV to 525 mV, Figure 9) 175 340 700 ps tF Output Falltime (Measured from 525 mV to 175 mV, Figure 9) 175 400 700 ps DtR Output Risetime Variation (Single−Ended) 125 ps DtF Output Falltime Variation (Single−Ended) 125 ps Stabilization Time Stabilization Time From Powerup VDD = 3.3 V 40 0 7 3.0 ps ppm 30 ms 10 ms ms NOTE: Device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are guaranteed only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. 12. VDDXD and VDDODA power pins must be shorted to power supply voltage VDD and GNDXD and GNDODA ground pins must be shorted to power supply ground GND. Measurement taken from differential output on single−ended channel terminated with RS = 33.2 W, RL = 50 W, with test load capacitance of 2 pF and current biasing resistor set at 475 W. See Figure 7. Guaranteed by characterization. 13. Spread spectrum clocking enabled. 14. Output pins are tri−stated when OE is asserted LOW. Output pins are driven differentially when OE is HIGH unless device is in power down mode, PD = Low. http://onsemi.com 5 NB3N51034 Table 7. AC ELECTRICAL CHARACTERISTICS − PCI EXPRESS JITTER SPECIFICATIONS, VDD = 3.3 V ± 5%, TA = −40°C to 85°C Symbol tj (PCIe Gen 1) Parameter Max SSOFF 10 20 86 ps SSON (−0.5%) 19 28 SSOFF 1.0 1.8 3.1 ps SSON (−0.5%) 1.1 1.9 SSOFF 0.1 0.15 3.0 ps SSON (−0.5%) 0.8 1.1 SSOFF 0.35 0.7 1.0 ps SSON (−0.5%) 0.55 0.8 Test Conditions Phase Jitter Peak−to−Peak (Notes 16 and 19) f = 100 MHz, 25 MHz Crystal Input Evaluation Band: 0 Hz − Nyquist (clock frequency/2) Phase Jitter RMS (Notes 17 and 19) f = 100 MHz, 25 MHz Crystal Input High Band: 1.5 MHz − Nyquist (clock frequency/2) tREFCLK_LF_RMS (PCIe Gen 2) Phase Jitter RMS (Notes 17 and 19) f = 100 MHz, 25 MHz Crystal Input Low Band: 10 kHz − 1.5 MHz tREFCLK_RMS (PCIe Gen 3) Phase Jitter RMS (Notes 18 and 19) f = 100 MHz, 25 MHz Crystal Input Evaluation Band: 0 Hz − Nyquist (clock frequency/2) tREFCLK_HF_RMS (PCIe Gen 2) Typ PCIe Industry Spec Min Unit 15. Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium has been reached under these conditions. 16. Peak−to−Peak jitter after applying system transfer function for the Common Clock Architecture. Maximum limit for PCI Express Gen 1 is 86 ps peak−to−peak for a sample size of 106 clock periods. 17. RMS jitter after applying the two evaluation bands to the two transfer functions defined in the Common Clock Architecture and reporting the worst case results for each evaluation band. Maximum limit for PCI Express Generation 2 is 3.1 ps RMS for tREFCLK_HF_RMS (High Band) and 3.0ps RMS for tREFCLK_LF_RMS (Low Band). 18. RMS jitter after applying system transfer function for the common clock architecture. 19. VDDXD and VDDODA power pins must be shorted to power supply voltage VDD and GNDXD and GNDODA ground pins must be shorted to power supply ground GND. Measurement taken from differential output on single−ended channel terminated with RS = 33.2 W, RL = 50 W, with test load capacitance of 2 pF and current biasing resistor set at 475 W. See Figure 7. This parameter is guaranteed by characterization. Not tested in production. http://onsemi.com 6 NB3N51034 NOISE POWEER (dBc/Hz) PHASE NOISE OFFSET FREQUENCY (Hz) NOISE POWEER (dBc/Hz) Figure 3. Typical Phase Noise Plot at 100 MHz; (fCLKIN = 25 MHz Crystal , fCLKOUT = 100 MHz SS OFF, RMS Phase Jitter for Integration Range 12 kHz to 20 MHz = 414 fs, Output Termination = HCSL type) OFFSET FREQUENCY (Hz) Figure 4. Typical Phase Noise Plot at 200 MHz; (fCLKIN = 25 MHz Crystal , fCLKOUT = 200 MHz SS OFF, RMS Phase Jitter for Integration Range 12 kHz to 20 MHz = 406 fs, Output Termination = HCSL type) http://onsemi.com 7 NB3N51034 APPLICATION INFORMATION Crystal Input Interface as nominal values, assuming approximately 2 pF of stray capacitance per trace and approximately 8 pF of internal capacitance. CL = (C1 + Cstray + Cin) / 2; C1 = C2 The frequency accuracy and duty cycle skew can be fine-tuned by adjusting the C1 and C2 values. For example, increasing the C1 and C2 values will reduce the operational frequency. Figure 5 shows the NB3N51034 device crystal oscillator interface using a typical parallel resonant crystal. The device crystal connections should include pads for small capacitors from X1 to ground and from X2 to ground. These capacitors, C1 and C2, need to consider the stray capacitances of the board and are used to match the nominally required crystal load capacitance CL. A parallel crystal with loading capacitance CL = 18 pF would use C1 = 26 pF and C2 = 26 pF C1 = 26 pF X1 Fundamental Mode Parallel Resonant Crystal 18 pF Load X2 C2 = 26 pF Figure 5. Crystal Interface Loading Power Supply Filter and 6). It is recommended to place decoupling capacitors as close as possible to the device to minimize lead inductance. In order to isolate the NB3N51034 from system power supply, noise decoupling is required. The 10 mF and a 0.1 mF cap from supply pins to GND decoupling capacitor has to be connected between VDD (pins 1 and 15) and GND (pins 9 Termination The output buffer structure is shown in the Figure 6. 2.6 mA 14 mA IREF RREF CLKx CLKx HCSL / LVDS termination 475 W Figure 6. Simplified Output Structure http://onsemi.com 8 NB3N51034 require the 100 W near the LVDS receiver if the receiver has internal 100 W termination. An optional series resistor RL may be connected to reduce the overshoots in case of impedance mismatch. The outputs can be terminated to drive HCSL receiver (see Figure 7) or LVDS receiver (see Figure 8). HCSL output interface requires 49.9 W termination resistors to GND for generating the output levels. LVDS output interface may not HCSL INTERFACE CLK0 RL* = 33.2 W Zo = 50 W RL* = 33.2 W Zo = 50 W CLK0 RL = 50 W RL = 50 W NB3N51034 Receiver CLK3 RL* = 33.2 W Zo = 50 W RL* = 33.2 W Zo = 50 W CLK3 IREF RL = 50 W *Optional RL = 50 W RREF = 475 W Figure 7. Typical Termination for HCSL Output Driver and Device Evaluation LVDS COMPATIBLE INTERFACE CLK0 RL* = 33.2 W Zo = 50 W 100 W RL* = 33.2 W 100 W** Zo = 50 W CLK0 RL = 150 W RL = 150 W NB3N51034 Receiver CLK3 RL* = 33.2 W Zo = 50 W 100 W RL* = 33.2 W CLK3 IREF RREF = 475 W 100 W** Zo = 50 W RL = 150 W *Optional **Not required if LVDS receiver has 100 Ohm internal termination RL = 150 W LVDS Device Load Figure 8. Typical Termination for LVDS Device Load http://onsemi.com 9 NB3N51034 700 mV 525 mV 525 mV 175 mV 175 mV 0 mV tR tF Figure 9. HCSL Output Parameter Characteristics ORDERING INFORMATION Package Shipping† NB3N51034DTG TSSOP−20 (Pb−Free) 75 Units / Rail NB3N51034DTR2G TSSOP−20 (Pb−Free) 2500 / Tape & Reel Device †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. http://onsemi.com 10 NB3N51034 PACKAGE DIMENSIONS TSSOP−20 CASE 948E−02 ISSUE C 20X 0.15 (0.006) T U 2X K REF 0.10 (0.004) S L/2 20 M T U S V ÍÍÍÍ ÍÍÍÍ ÍÍÍÍ S J J1 11 B −U− L PIN 1 IDENT SECTION N−N 0.25 (0.010) N 1 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. DIMENSION B DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 (0.010) PER SIDE. 5. DIMENSION K DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE K DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 7. DIMENSION A AND B ARE TO BE DETERMINED AT DATUM PLANE −W−. K K1 10 M 0.15 (0.006) T U S A −V− N F DETAIL E −W− C G D H 0.100 (0.004) −T− SEATING DETAIL E SOLDERING FOOTPRINT PLANE DIM A B C D F G H J J1 K K1 L M MILLIMETERS MIN MAX 6.40 6.60 4.30 4.50 --1.20 0.05 0.15 0.50 0.75 0.65 BSC 0.27 0.37 0.09 0.20 0.09 0.16 0.19 0.30 0.19 0.25 6.40 BSC 0_ 8_ INCHES MIN MAX 0.252 0.260 0.169 0.177 --0.047 0.002 0.006 0.020 0.030 0.026 BSC 0.011 0.015 0.004 0.008 0.004 0.006 0.007 0.012 0.007 0.010 0.252 BSC 0_ 8_ 7.06 1 0.65 PITCH 16X 0.36 16X DIMENSIONS: MILLIMETERS 1.26 ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. 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