Data sheet 2.5 Gb/s APD Preamp Receiver uncooled The 2.5 Gb/s APD Preamp Receiver - uncooled comprises a high speed APD coupled to a non-inverting HBT transimpedance amplifier with a style-ended output. The receiver is housed in an 8 pin butterfly package with a single mode fibre pigtail. The integral thermistor may be used in an active bias control loop to compensate for ambient temperature variation. www.bookham.com Features * High sensitivity -34 dBm * High dynamic range * High bandwidth * Integrated thermistor * Integrated non-inverting preamplifier * Single product code covers full C and extended L-band operation Applications * Long reach STM16/OC48 receivers Thinking optical solutions Characteristics (Tcase = 25C, Wavelength = 1550 nm, Vcc = 5 V unless otherwise stated) Parameter Module responsivity Module breakdown voltage Symbol Min Typ R-15 R-13 0.75 0.70 0.92 0.88 Vbr 40 52 Max 60 Unit Conditions A/W A/W 1550 nm, M = 1 1310 nm, M = 1 V Temperature coef of Vbr 0.12 V/C Transimpedance Zt 1.7 k Bandwidth (-3 dB) BW 1.8 2.4 3.2 GHz Ir = 10 A = dVbr/dTc DC-coupled, RL = 50 AC-coupled, RL = 50 , M = 10 Sensitivity Pr -34 Output amplitude Vout 12 Overload power Pol -7 Optical return loss Prtn 30 Power supply voltage Vcc Vr 10 Power supply current Icc Thermistor resistance Rth -32.5 dBm 2.5 Gb/s, PRBS = 2 ^(23)-1 NRZ, BER = 10 ^(-10) Vr = optimum Vbias 2000 mVpp max. value at -8 dBm, M=3 min. value at -34 dBm, M = 10 dBm M=3 -5 dB 5 9.5 65 V V 69 80 mA 10 10.5 K APD bias Absolute Ratings These limits are absolute stress levels only, functional operation of the device is not guaranteed at these levels. Long-term exposure to these limits could result in reduced reliability of the device. (Tcase = 25C unless otherwise stated) Parameter Symbol Min Operating case temp. Top Storage temp. Tstg Supply voltage Typ Max Unit -20 70 C -40 85 C Vcc 0 6 V APD reverse voltage Vr 0 Vbr V APD reverse current Ir 2 mA Lead soldering temperature - 250 C Lead soldering time - 10 s www.bookham.com Conditions Breakdown voltage (Vbr) varies from device to device. Vbr value supplied with each device Thinking optical solutions Outline Drawing Dimensions in mm 10.2 o2.5 2 X o2.4 o1.7 15 12.9 15.4 30 8.55 6.45 11.2 R 1.2 7 3.4 10 15 2 20 4.4 0.8 6.5 24 7.94 8 x 0.5 3 x 2.54 = 7.62 Instructions for Use Pin 1 APD Bias (+) Pin 4 Nc DC bias voltage for the APD. During power-up, in order to prevent forward-biasing the APD, this bias voltage should be applied before the pre-amp power (PIN 3) is applied. The maximum mean current is O.5 mA. The bias voltage will normally be controlled externally to optimise the operating point. This voltage will typically range from 10 V to 65 V. No connection on this pin. Pin 2, 7, 5 Ground Pin 8 Thermistor Ground all pins for optimum performance. The negative temp coefficient thermistor may be used in a control loop to optimise the bias voltage according to device temperature. The thermistor has a nominal resistance of 10 kW at 25C, and is not polarity sensitive although one side is connected to package ground. Pin 3 Vcc (+) Positive supply voltage between 4.75 V and 5.25 V to be applied after the APD bias voltage is present. The supply should be filtered to minimise noise ingress and be capable of delivering up to 80 mA. www.bookham.com Pin 6 Output The RF output has a DC offset typically between 1.9 V and 3.0 V, so may be AC coupled into 50 W load. Maximum output is 2 Vpp. Operating current should be limited to 100 A to prevent self-heating errors. Thinking optical solutions Connections Pin # Name Pin # Name 1 APD bias (+) 5 Ground 2 Ground 6 Output (DC coupled) 3 Power supply Vcc (+) 7 Ground 4 Not connected 8 Thermistor North America Bookham Technology Inc. 49 Buford Highway Suwanee GA 30024 USA Connector types: SC/PC = C28, fibre length 975 -1035 mm FC/PC = C33, fibre length 975 -1035 mm * Tel: +1 678 482 4021 * Fax: +1 678 482 4022 Europe Bookham Technology plc Brixham Road Paignton Devon TQ4 7BE UK * Tel: +44 (0) 1803 66 2875 * Fax: +44 (0) 1803 66 2801 1 8 10 k @ 25oC Asia 2 7 3 6 4 5 Bookham Technology plc 21/F Cityplaza One 1111 King's Road Quarry Bay Hong Kong * Tel: +852 (2100) 2249 * Fax: +852 (2100) 2585 Sales@bookham.com Important Notice Ordering Information Order Code No. ATA2400-40C** Connector types: SC/PC = C28, fibre length 975-1035 mm FC/PC = C33, fibre length 975-1035 mm Bookham Technology has a policy of continuous improvement, as a result certain parameters detailed on this flyer may be subject to change without notice. If you are interested in a particular product please request the available from any Bookham Technology sales representative. CAUTION STATIC SENSITIVE DEVICE OBSERVE PRECAUTIONS Certificate No. FM 15040 Certificate No. EMS 35100 www.bookham.com REV 1 Feb 2003 (c) Bookham Technology 2003 Bookham & ASOC are registered trademarks of Bookham Technology plc