Micro Networks M830 Series An Integrated Circuit Systems Company Preliminary Specifications M830 Series 12.249Gb/s OC-192 Clock & Data Recovery Transmitter Module DESCRIPTION The M830 Series CDR module is specifically designed to regenerate the spectral clock component from an incoming NRZ data stream, incorporating forward error correction, and output a low-jitter clock and retimed complementary data. FEATURES Superior PLL-based jitter performance 8psec p-p jitter 0.9Vp-p complementary data outputs 1 Ul externally adjustable clock phase 200mVp-p input sensitivity Optional adjustable bias @ data input to decision circuit Externally adjustable decision threshold The module utilizes a phase-locked loop architecture incorporating a high-stability, low noise SAW VCO to provide extremely low jitter clock and data outputs. The incoming data is frequency doubled to recover the clock component. The clock signal is then filtered by a microwave band pass filter to remove wide band noise and spurious signal. This signal is further filtered using the narrow band SAW VCO based PLL to minimize the noise close to the carrier. The low jitter clock is then used to retime the data and serves as the module’s clock output. The module provides usercontrolled clock phase shifter and output data crossover adjustments to optimize system performance. PLL lock-in range and loop transfer characteristics are optimized for minimal jitter in accordance with ITU and Bellcore standards for SONET/SDH systems. APPLICATIONS ABSOLUTE MAX RATINGS SONET OC-192 and SDH STM Physical Layer and Clock and Data Recovery Applications Incorporating Forward Error Correction Operating Temp. Range (Case) ............................. 0°C to +70°C Storage Temp. Range (Ambient) ..................... -40°C to +125°C Power Supply Voltage Vcc: ...................................................... +5.25Vdc Vee: ...................................................... -5.25Vdc Ref Voltage ....................................................... +0.3 to -1.6V Phase Shift Control .....................................................0 to +15V ISO 9001 Registered Micro Networks 324 Clark Street Worcester, MA 01606 tel: 508-852-5400 fax: 508-852-8456 www.micronetworks.com Micro Networks M830 Series An Integrated Circuit Systems Company Preliminary Specifications SPECIFICATIONS Specifications @ Vcc = +5.0 Volts, Vee = -5.0 Volts, Data in = 231-1 PRBS NRZ, Mark ratio = 1:2, and TA = +25°C unless otherwise specified PARAMETER Min Data Rate Typ Max 12.2493 Data Input Level 200 Units Gb/s Condition NRZ 600 mVp-p 10 12 dB 900 1100 mVp-p Data Output Jitter 7.5 10 psec p-p Data Output Duty Cycle Distortion 2.5 5 % Data Output Rise Time (20% to 80%) 25 35 psec 50Ω, AC coupled Data Output Fall Time (80% to 20%) 25 35 psec 50Ω, AC coupled 12 dB 50MHz to 9GHz .3 MHz Data Input Return Loss Data Output Voltage Data Output Return Loss 750 10 PLL Loop BW Decision Threshold Control 10 90 Single-ended, 50Ω, AC coupled 50MHz to 7GHz % Data & Data 27–1 PRBS NRZ Relative to max Data Input Voltage Ref -0.2 to -0.75V Decision Threshold Control Voltage Range -0.75 Clock Output Level 800 Clock Phase Control 1 Clock Phase Control Voltage 0 1200 -0.2 Volts 1400 mVp-p Internal load of 45Ω to -0.45V 50Ω, AC coupled UI +15 Volts 10kΩ, minimum load impedance Clock SSB Phase Noise @100Hz Offset -70 dBc/Hz @1kHz Offset -85 dBc/Hz @10kHz Offset -90 dBc/Hz Clock Jitter 7.5 9 psec p-p Spurious Output -50 dBc Harmonic Output -30 dBc 231–1 PRBS NRZ 27–1 PRBS NRZ Supply Voltage Vcc +4.75 +5.0 +5.25 Volts Vee -5.25 -5.0 -4.75 Volts Icc 450 600 mA Iee 300 550 mA Supply Current Micro Networks 324 Clark Street Worcester, MA 01606 tel: 508-852-5400 fax: 508-852-8456 www.micronetworks.com Micro Networks M830 Series An Integrated Circuit Systems Company Preliminary Specifications BLOCK DIAGRAM The M830 clock and data recovery module has a SAW VCO based phase-locked loop architecture. The 1.225GHz fundamental VCO is implemented as a transmission oscillator. The oscillator loop includes the SAW resonator that has a linear phase with frequency characteristic, a linear voltage controlled phase shifter, loop amplifier, and power divider to couple signal from the loop. The oscillator is frequency doubled to 2.450GHz and band pass filtered. The 2.450GHz is then multiplied by five to the final frequency of 12.25GHz. The output of the VCO is power divided to provide an input to the phase detector and a clock signal. integrator circuit. The integrator output controls the phase shifter in the SAW VCO, completing the phaselock loop. The phase-locked loop causes the low noise VCO output to be phase-locked to the clock signal extracted from the NRZ input data, providing a low jitter clock signal. The clock signal is applied to a phase shifter that allows the timing between the input data and clock to be adjusted for optimum performance. The phase shifter output is amplified and band pass filtered to provide a low jitter and low spurious clock. The clock is power divided to provide the clock output of the module and the clock input to the decision circuit. The input data is power divided to provide inputs to the decision circuit and the clock recovery circuitry. The input to the clock recovery circuit is amplified and applied to an analog frequency doubler to extract a clock spectral component from the NRZ data input stream. The 12.25GHz doubler output is band pass filtered and amplified. The decision circuit is a high speed D flip-flop. In addition to the clock and data inputs, a user adjustable decision threshold voltage is available. This voltage is used to optimize the retimed data. The CDR threshold and phase shifter do not require adjustment over the temperature and input data level ranges. One VCO output and the clock extracted from the input data serve as inputs to a microwave phase detector. The phase detector output is applied to an The clock output of the CDR is a low spurious sinusoidal signal and the complementary data outputs are AC coupled ECL signals. DC coupled ECL compatible data outputs are available. Micro Networks 324 Clark Street Worcester, MA 01606 tel: 508-852-5400 fax: 508-852-8456 www.micronetworks.com Micro Networks M830 Series An Integrated Circuit Systems Company Preliminary Specifications DATA OUTPUT EYE DIAGRAM Data Output Eye Diagram CLOCK SPECTRUM Narrow Band Clock Spectrum Micro Networks 324 Clark Street Worcester, MA 01606 Wide Band Clock Output Spectrum tel: 508-852-5400 fax: 508-852-8456 www.micronetworks.com Micro Networks M830 Series An Integrated Circuit Systems Company Preliminary Specifications ORDERING INFORMATION & MECHANICAL DIMENSIONS PIN DESCRIPTIONS Symbol Name Description Series DATA IN Data Input AC coupled 50Ω data input No of Inputs DATA OUT Data Output (non-inverted) AC coupled 50Ω data output DATA OUT Data Output (inverted) AC coupled 50Ω data output CLK OUT Clock Output (sinusoidal) AC coupled 50Ω clock output PHASE ADJ Phase Shift Adjust User input to phase shift the recovered clock over a 100ps range. The control voltage range is 0 to 15V. REF Decision Threshold Adjustment User input to adjust the decision circuit threshold. The control range is -0.2V to -0.75V. LOC DEC Lock Detect TTL output indicating PLL loss of lock. TTL “1” indicates lock. TTL “0” indicates loss of lock. +5V +5V Power Supply Positive power supply input. Part Number: M830 X XXXXX.XX X X D = Single Input Frequency Temperature Range K = 0 to +70°C Package Type C = Case/Module Package -5V -5V Power Supply Negative power supply input. GND Power Supply Ground Connection Ground lug to allow connection of power supply returns to case ground. 2.49 [63.3] MAX 1.89 [48.0] MAX DATA IN 2X 1.675 [42.54] DEC +5V -5V PHASE LOC ADJ REF -5V DATA OUT DATA OUT CLK OUT 2X .100 [2.54] 4X Ø .128-.134 THRU 2X .100 [Ø 3.25-3.40] [2.54] MOUNTING HOLES 2X LABEL 2X 2.275 [57.79] FL HD SCR'S REF 6X .28 [7.1] 6X Ø .03 [É”.76] DEC +5V -5V PHASE LOC ADJ REF -5V .27 [6.8] 1.20 [30.5] .54 [13.8] .125 [3.18] MAX 6X .03 [.76] REF 4X SMA CONN 1.45 [36.8] .76 [19.3] MAX .62 [15.7] .18 [4.6] .23 [5.84] .39 [9.8] .27 [6.8] .43 [10.9] .29 [7.4] .95 [24.1] 1.47 [37.4] .55 [14.0] .36 [9.1] .29 [7.4] Micro Networks makes no assertion or warranty that the circuitry and the uses thereof disclosed herein are non-infringing on any valid US or foreign patents. Micro Networks assumes no liability as a result of the use of said specifications and reserves the right to make changes to specifications without notice. Contact your nearest Micro Networks sales representative office for the latest specifications. Micro Networks An Integrated Circuit Systems Company 324 Clark Street Worcester, MA 01606 tel: 508-852-5400 fax: 508-852-8456 European Sales Headquarters Hertogsingel 20 6214 AD Maastricht The Netherlands tel: +31-43-32-70912 fax: +31-43-32-70715 Micro Networks 324 Clark Street Worcester, MAwww.micronetworks.com 01606 tel: 508-852-5400 fax: 508-852-8456 www.micronetworks.com Rev. 15.0 Micro Networks An Integrated Circuit Systems Company Micro Networks Corporation Worldwide Headquarters 324 Clark Street Worcester, MA 01606 USA tel: 508-852-5400 fax: 508-852-8456 European Sales Headquarters Hertogsingel 20 6214 AD Maastricht The Netherlands tel: +31-43-32-70912 fax: +31-43-32-70715 www.micronetworks.com