F0510203B

01.08.28 ♦ Features • Up to 1.5 Gbps high speed operation • -5 V single power supply • Up to 40 mA p-p modulation current • Up to 50 mA bias current • Maximum bias current preset control F0510203B 1.5Gbps Laser Diode Driver With Input Bias Circuit ♦ Applications • Laser diode driver of an optical transmitter circuit for SDH (STM4) ♦ Functional Description The F0510203B is a high performance GaAs integrated laser diode driver for use in an optical transmitter circuit up to 1.5 Gbps NRZ data rate. The F0510203B typically specifies rise time and fall time of 100 psec (20% - 80%). It features single -5 V supply operation, 1 to 50 mA presettable bias current and up to 40 mA modulation current. F0510203B ♦ Absolute Maximum Ratings 1.5Gbps Laser Diode Driver Ta = 25 °C, unless specified Parameter Supply Voltage Input Voltage Output Voltage Modulation Current Control Voltage Maximum Bias Current Setting Voltage Storage Temparature Ambient Operating Temparature Symbol VSS VIN1, VIN2 VOUT1, VOUT2 VM VB Tstg Ta Value VDD- 7 to VDD+0.5 VSS to VDD+0.5 VSS to VDD+0.5 VSS to VSS+1.3 VSS to VSS+1.7 -55 to +125 -40 to +85 ° Units V V V V V C C ° ♦ Recommended Operating Conditions VDD= GND Value Min. Supply Voltage Ambient Operating Temparature VSS Ta VDD-5.25 0 Typ. VDD-5 25 Max. VDD-4.75 85 V °C Parameter Symbol Units 1.5Gbps Laser Diode Driver ♦ Electrical Characteristics F0510203B Ta =0 ~ 85 °C, VSS = - 5.25 ~ -4.75 V, VDD =GND unless specified Value Parameter Circuit Current (1) Input Voltage Input Current Modulation Current Bias Current Bias Current Setting Voltage(IM=20mA) LEAK Current Rise Time Fall Time Symbol ISS VIH VIL IIN1,IIN2 IMMAX IBMAX VM20 ILEAK tr tf VIN1 , VIN2 =-1.8V VM =VSS+1.3V, Ta =25° C VB =VSS+1.7V, Ta =25° C IM=20mA, VSS=-5V Ta=25° C VM=VSS +0.01V VB=VSS +0.1V RL = 25Ω 20% - 80% RL = 25Ω 20% - 80% TestConditions Min. VM =VB=VSS , without IM,IB Differential Mode -1.8 -80 40 50 VSS+0.73 100 100 -1.6 80 VSS+0.92 0. 9 150 150 V µA mA mA V mA ps ps -1.0 Typ. 28 Max. 40 -0.8 mA V Units F0510203B ♦ Block Diagram 1.5Gbps Laser Diode Driver GND VINR VIN VINB VINBR + - OUT OUTB OUTBIAS VSS VM VSSM VSSB VB ♦ Die Pad Description VIN VINR VINB VINBR VSS VSSM VSSB VM VB OUT OUTB OUTBIAS GND Input Bias Voltage for Input Input Bias Voltage for Input Supply Voltage Supply Voltage Supply Voltage Modulation Current control Bias Current Control Output Output Bias Current for Laser GND 1.5Gbps Laser Diode Driver ♦ Die Pad Assignments F0510203B (11) (10) (9) (8) (12) (7) (13) (1) (2) (3) (4) (5) (6) No. (1) (2) (3) (4) (5) (6) (7) (8) (9) Symbol VIN VINR OUT OUTBIAS VB VSSB VSSM VM OUTB Center Coordinates(µm) (184,80) (470,80) (680,80) (880,80) (1180,80) (1310,305) (1310,585) (1180,810) (680,810) No. (10) (11) (12) (13) O A Symbol VINBR VINB VDD VSS Center Coordinates(µm) (470,810) (184,810) (80,585) (80,305) (0,0) (1390,890) F0510203B ♦ Test Circuits 1.5Gbps Laser Diode Driver DC Source/ Monitor Unit OUT OUTB OUTBIAS VIN1 VM DC Source/ Monitor Unit VIN2 DUT VB VM VSS VSSB VSSM Probing System with Temp. chuck 1.5Gbps Laser Diode Driver ♦ Typical DC Characteristics (1)Switching Characteristics F0510203B IO (mA) Modulation Current IM(mA) 80.00 8.000 /div .0000 -1.800 .1000/div Input Voltage VIN1(V) (VSS=-5.0V, VM =-3.7V) (v) -8.000 (2)Modulation Current Control IO (mA) Modulation Current IM(mA) 80.00 8.000 /div .0000 -5.000 .1500/div Control Voltage VM(V) (v) -3.500 (VSS=-5.0V, VIN1 =-1.7V, VIN2 =-0.9V) F0510203B (3)Bias Current Control 1.5Gbps Laser Diode Driver IO (mA) Modulation Current IM(mA) 80.00 8.000 /div .0000 -5.000 .2000/div Control Voltage VB(V) (v) -3.000 (VSS=-5.0V, VIN1 , VIN2 , VM : no connect) Electron Device Department