F0601720B

01.08.28 F0601720B ♦ Features • high speed operation DC ~ 266 Mb/s NRZ • Differential ECL compatible interface • 5.0 V single power supply • Pulse distortion control 0 ~ 350 psec High Speed GaAs LED Driver ♦ Applications • LED driver of an optical transmitter circuit up to 266 Mb/s ♦ Functional Description The F0601720B is a high performance GaAs LED driver IC applying in an optical transmitter module up to 266 Mb/s NRZ data rate. The F0601720B specifies the rise time and the fall time of 600 psec (10%-90%) typically. It features the single 5.0 V supply operation. GaAs LED Driver IC ♦ Absolute Maximum Ratings F0601720B Ta=25 °C, unless specified Parameter Supply Voltage Supply Current Modulation Current Power Dissipation Input Voltage Ambient Operating Temperature Strage Temperature Symbol VCC ICC IOUT1,2 Pdis VIN1,2 Ta Tstg Absolute Maximum Ratings 7.0 100 100 1 VCC ~ Max (-0.5, VCC -3.0) 0 ~ 70 -55 ~ +125 Units V mA mA W V °C °C ♦ Recommended Operating Conditions VEE= GND Parameter Supply Voltage Ambient Operating Temperature Symbol VCC Ta Value Typ. 5.0 25 Units V °C Min. 4.75 0 Max. 5.25 70 GaAs LED Driver IC ♦ Electrical Characteristics F0601720B VCC=5 V, Ta=25 °C, unless specified Value Parameter Supply Current Input Voltage Input Current Modulation Current *1) Symbol ICC VIH VIL IIN1, IIN2 IOUT1 Tr1:open Tr2=GND Vsd1=VCC at VIN1=VIL, VIN2=VI Tr1:open ECL Reference Voltage Rise Time Fall Time VDD *1) tr *2) Conditions Min. 90 3.830 Differential Input 3.050 -150 40 60 3.8 3.45 3.295 3.550 150 60 80 5 4.1 3.75 1 1 Typ. 100 4.045 Max. 150 4.265 Units mA V V µA mA mA µΑ V V nsec nsec Leakage Current Isdleak1 Tr2=GND RL=15Ω RL=15Ω rf *2) *1) Adjusting by valuable resistors *2) Measuring by the circuits shown in Figures 3 and 4 GaAs LED Driver IC ♦ User’s Guide (1) Application of Dly1 and Dly2 F0601720B The two terminals permit presettable compensation of pulse width distortion at input signals In1 and In2 by connecting to GND as shown in Table2. Table 1. Dly1 Presetting open Dly2 GND 250ps 350ps open 1ps GND 150ps (2) Application of Tr1 The Tr1 terminal permits presettable voltage at Vbb by adjusting the valuable resistor (0 to 1kΩ) connected with GND as shown in Table2. Table 2. Terminal Tr1 Vbb Without control open 3.8V ~ 4.1V With control 0 ~ 1kΩ 3.72V (Recommended setting voltage) GaAs LED Driver IC ♦ Block Diagram F0601720B GND VCC Sd1 OUT1 OUT2 Sd2 IN1 INBUF IN2 BUFFER A OUTBUF DELAY1 DELAY2 B PREDISTORTION BUFFER FOR OUTBUF Vref DELAY CONTROL GND Temp Dly1 Dly2 Tr1 Tr2 VDD VCC VIN1, VIN2 OUT1, OUT2 Sd1,Sd2 Dly1,Dly2 Tr1 Tr2 VDD Temp : Supply Voltage : Differential Input : Differential Output (LED should be connected to Out1) : Output Wave Form Control : Pulse Width Distortion Control : Vbb Control : Testing : ECL Reference Voltage : Temperature Measurement Fig. 1 GaAs LED Driver IC ♦ Die Pad Descriptions F0601720B (13) (12) (11) (10) (14) (15) (9) (8) (16) (7) (17) (6) (1) (2) (3) (4) (5) No. 1 2 3 4 5 6 7 8 9 10 Symbol Sd1 OUT1 GND2 OUT2 Sd2 VCC2 VCC1 Dly2 Dly1 VIN2 Center Coordinates (µm) (80,80) (260,80) (445,80) (630,80) (810,80) (810,590) (810,770) (810,950) (810,1130) (810,1310) No. 11 12 13 14 15 16 17 O A Symbol VIN Temp VDD GND1 GND1 Tr2 Tr1 Center Coordinates (µm) (480,1310) (295,1310) (115,1310) (80,1130) (80,950) (80,770) (80,590) (0,0) (890,1390) GaAs LED Driver IC ♦ Measurement Block DIiagram (1) DC Characteristics 330pF F0601720B +5.0V 15Ω 15Ω VCC VIN1 Sd1 OUT1 OUT2 DC Power Source & Monitor VIN2 VDD Tr1 Dly1 Tr2 Dly2 Vee(GND) Sd2 DC Power Source & Monitor (2) AC Characteristics 51Ω 22Ω Trig. Pulse Pattern Generator VIN1 VCC (GND) Sd1 OUT1 OUT2 VDD DC Power Source & Monitor Sampling Oscilloscope VIN2 Vee Sd2 0.1µF -0.5V GaAs LED Driver IC ♦ Precautions F0601720B Owing to their small dimensions, the GaAs FET’s from which the F0601720B is designed are easily damaged or destroyed if subjected to large transient voltages. Such transients can be generated by power supplies when switched on if not properly decoupled. It is also possible to induce spikes from static-electricity-charged operations or ungrounded equipment. Electron Device Department