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| IT3012E 8 GHz Differential-to-Single-Ended Amplifier Description The IT3012E is a RoHS-6-compliant packaged differential-to-single-ended amplifier designed for use as an optical modulator predriver with limiting functionality in 10.7 Gb/s and 12.5 Gb/s (OC-192) optical transmitters and receivers. It allows single-ended input signals of 350 mVpp to 900 mVpp or differential signals of 250 mVpp to 1800 mVpp to be limited at a constant singleended output voltage of 1.9 Vpp. It provides output voltage control and allows external offset correction. IT3012E also provides excellent linear performance when operating at lower output voltages. Both AC and DC input coupling are allowed. DC-coupled SCFL differential input (input "high" voltage = 0 V, input "low" voltage = -900 mV) is allowed. Limiting function with 1.9 Vpp single-ended output 3 dB bandwidth: 8 GHz Single-ended Gain: 17.5 dB Standard bias supply levels: -5 V or -5.2 V, +5 V Power consumption: 665 mW Low group delay and jitter Output voltage control AC and DC input coupling (SCFL compatible) AC and DC output coupling Features www..com RoHS-6-compliant 4x4 mm QFN (MO-220) package Absolute Maximum Ratings Sym bol Vee Vcc Vd Vm IDCin (+),(-) Tch Tstg Param eters/conditions Pow er supply voltage Pow er supply voltage Applied voltage at data input (differential) Applied voltage at data input (single ended) Offset control current Maximum channel temperature Storage temperature Min. -8 0 Max. 0 8 3 1.5 5 150 Units V V V V mA C C -65 150 Recommended Operating Conditions Symbol Tc Vee Vcc Vcb2 Iee Icc V DCin Vctrl Vm Vd Vindc R Parameters/conditions Operating temperature range (Tcase) Negative pow er supply voltage Positive pow er supply voltage First internal bias control voltage Negative supply current Positive supply current Offset control voltage Voltage control pin Applied peak-peak voltage at data input (single ended) Applied peak-peak voltage at data input (differential) DC input voltage (w ith DC-coupled input) Data bit rate Min. 0 -5.45 4.75 86 30 -5 -2.7 350 250 -0.5 Typ. -5 5 0 101 35 Max. 85 -4.75 5.25 116 40 5 0 900 1800 0 12.5 Units o C V V V mA mA V V mV mV V Gb/s For pricing, delivery, and ordering information, please contact GigOptix at (650) 424-1937, e-mail: sales@gigoptix.com, or visit our site at www.GigOptix.com. 1 IT3012E 8 GHz Differential-to-Single-Ended Amplifier Electrical Characteristics At ambient temperature Vee =- 5 V Vcc = +5 V Symbol Parameters/conditions P Z DCin G B3dB RLin RLout Vout Vout Voutdc Trse Tfse JRMS Pow er consumption Input impedance at DCin, /DCin Single-ended small signal gain 3 dB bandw idth Input return loss (up to10 GHz) Output return loss (up to 10 GHz) Output peak-peak voltage (single ended) (Vctrl =-2.7V for max. output voltage) Vout sensitiviy vs bias (Vee=-5 V +/-5%, Vcc=5 V +/-5%) DC output voltage (DC coupled to 50 ohm load) Output rise time (single ended at maximum output voltage) Output fall time (single ended at maximum output voltage) RMS jitter degradation (*) 200 300 28 22 1 Min. 565 900 16.5 7 15 8 1.75 Typ. 665 1000 17.5 8 20 10 1.9 Max. 765 1100 Units mW Ohm dB GHz dB dB V +/-11 400 35 28 1.7 % mV psec psec psec www..com (*) JRMS=sqrt((JRMS_dut)2-(JMRS_thru)2) S-Parameter Data 22 IT3012E Single-Ended Linear Gain 20 18 16 Gain (dB) 12 10 8 6 4 2 0 0 2 4 6 8 Freq. (GHz) 10 12 14 16 IT3012E Input Return Loss 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 0 2 4 6 8 10 Freq. (GHz) 12 14 16 Vee = -5 V, Vcc = +5 V S11 (dB) Measured on connectorized evaluation board 14 IT3012E Output Return Loss 0 -2 -4 -6 S22 (dB) S12 (dB) -8 -10 -12 -14 -16 -18 -20 0 2 4 6 8 10 Freq. (GHz) 12 14 16 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 0 2 4 IT3012E Isolation 6 8 10 Freq. (GHz) 12 14 16 For pricing, delivery, and ordering information, please contact GigOptix at (650) 424-1937, e-mail: sales@gigoptix.com, or visit our site at www.GigOptix.com. 2 IT3012E 8 GHz Differential-to-Single-Ended Amplifier Eye Diagram Performance Vee = -5 V Vcc = +5 V www..com Linear performance Bit rate: 10.7 Gb/s Vin = +/-75 mVpp, Vout = +/-1.1 Vpp Linear performance Bit Rate: 12.5 Gb/s Vin = +/-75 mVpp, Vout = +/-1.1 Vpp . Saturated performance Bit rate: 10.7 Gb/s Vin = +/-400 mVpp, Vout = +/-1.9 Vpp Saturated performance Bit rate: 12.5 Gb/s Vin = +/-400 mVpp, Vout = +/-1.9 Vpp Voltage Control Bit rate: 10.7 Gb/s Vctrl =-1.5 V, Vout =1.7 Vpp Bit rate: 10.7 Gb/s Vctrl =-1.1 V, Vout =1.0 Vpp For pricing, delivery, and ordering information, please contact GigOptix at (650) 424-1937, e-mail: sales@gigoptix.com, or visit our site at www.GigOptix.com. 3 IT3012E 8 GHz Differential-to-Single-Ended Amplifier Device Diagram Vctrl DCin Din /Din /DCin Vee www..com 1kW 50W 1kW 50W Vcb2 Q Vcc Vctrl 1 F Vcb2 Recommended Operational Setup DC blocking capacitors optional DCin Din Input /Din /DCin IT3012E Vee Vcc Q -5.0 V 1 F 560 pF 560 pF 1 F +5 V Bias Conditions For Vee = -5 V Bias Condition * Apply +5.0 V at Vcc * Apply -5 V at Vee * Vcb2 = 0 V * Vctrl=-2.7 V or open for maximum output voltage * Vctrl from -2.7 V to -1 V for output voltage control For Vee = -5.2 V Bias Conditions * Apply +5 V at Vcc * Apply -5.2 V at Vee * Vcb2 = 0V * Vctrl = -1.8V for maximum output voltage * Vctrl from -1.8 V to -1 V for output voltage control For pricing, delivery, and ordering information, please contact GigOptix at (650) 424-1937, e-mail: sales@gigoptix.com, or visit our site at www.GigOptix.com. 4 IT3012E 8 GHz Differential-to-Single-Ended Amplifier "E" Package Drawings, Pinouts, Marking Notes: Dimensions in inches (mm) www..com Tolerances are 0.0039 in. (0.100 mm) Package drawing encompasses JEDEC MO-220 Version VGGC-2. See iTerra Application Note 10 for recommended pad Layout. RoHS parts are backward compatible if application note pad layout is followed. Lead frame material is copper alloy. Mold compound is UL94V0 compliant. Lead finish is NiPdAu. Marking Information iTerra MMMMEA XXNNNN LLYYWW Where, MMMM = part no. E = Package Type A =Temp. Range XX = Wafer Lot NNNN = Ser. No. LLYYWW =MFG D/C Pinouts P1: GND P2: Din (RF input) P3: /Din (/RF input) P4: GND P5: /DCin P6: Vee P7: N/C P8: N/C P9: GND P10: N/C P11: Q (RF Out) P12: GND P13: Vcb2 P14: Vctrl (voltage control) P15: Vcc P16: DCin For pricing, delivery, and ordering information, please contact GigOptix at (650) 424-1937, e-mail: sales@gigoptix.com, or visit our site at www.GigOptix.com. 5 |
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