AFBR-2310Z Fiber Optic Receiver for Multi GHz Analog Links Data Sheet Description Features The AFBR-2310Z is a compact, high performance, cost effective receiver for multi GHz analog communication over single mode optical fiber. Compact package The receiver incorporates a wide bandwidth, low dark current InGaAs/InP PIN photodiode packaged inside a TOheader, together with a high performance E-pHEMT RF amplifier and its bias network. FC Single mode fiber connectorized optical receptacle A receptacle designed according to the CEI/IEC 61754-13 standard allows coupling of the optical signal by means of a FC fiber patchcord. The receiver is optimized for operation at 1310 nm and 1550 nm but may be used over a wide wavelength range ranging from 850 nm to 1600 nm, with reduced performance. The amplifier low noise figure and PIN high responsivity allow for a high sensitivity and thus a high splitting ratio in branched Passive Optical Networks. Access to the RF output as well as bias of PIN and amplifier is through a flexible printed circuit board. The RF output requires external AC coupling. The receptacle is designed for assembly into a properly shaped aperture in the customer box wall or fixture. Low dark current PIN High performance RF amplifier Low power consumption Flex interconnect to customer PCB Minimal external circuitry required RoHS6 compliant Pairs to AFBR-1310Z Fiber Optic Transmitter for Multi GHz analog links Specifications Nominal 50 ohm RF output impedance 3.3 V RF amplifier and PIN bias voltage 200 V/W typical conversion gain 200 MHz to 5.5 GHz frequency range Applications Analog optical links for satellite signal distribution In-building antenna remote systems Table 1. Absolute Maximum Ratings [1] Parameter Symbol Minimum Typical Maximum Unit Storage Temperature (non-operating) Ts -40 85 C Operating Temperature Ta -40 85 C Relative Humidity (non condensing) RH 85 % 0 5.0 V 7 dBm RF amplifier/PIN supply voltage Optical input power Pin RF amplifier output DC voltage Vout 5 V ESD capability (HBM) VESDHBM 250 V 300 C Flex soldering temperature Notes For manual soldering, no longer than 2 sec/pad. It is advisable to pre-heat the customer PCB. Notes: 1. Absolute maximum ratings are those values beyond which functional performance is not intended, device reliability is not implied, and damage to the device may occur. Table 2. Recommended operating conditions [2] Parameter Symbol Minimum Typical Maximum Unit Operating Temperature Ta 0 85 C Relative Humidity (non condensing) RH 80 % RF amplifier supply voltage Vcc 3.465 V 3.135 3.3 Notes Notes: 2. Typical operating conditions are those values for which functional performance and device reliability is implied. Table 3. Electro-Optical specifications [3] Parameter Symbol RF Output impedance Ro Gain ripple G RF conversion gain G RF amplifier supply current Icc Min. 0.2 to 5.5 GHz Nom. Max. 4 dB 16 40 10 850 Unit 50 200 T = 0-85° C T = 0-85° C Input referred noise Wavelength range Conditions 1310 V/W @ 1 GHz mA No light input pW/√Hz 1600 nm 3 dB Bandwidth 7 GHz Low Cutoff Frequency 40 MHz Input optical power Notes 2 Note 4 dBm Notes: 3. All O/E parameters refer to 1310 nm and 1550 nm wavelength optical input signal 4. The receiver is optimized for operation at 1310 nm and 1550 nm but may be used over a wide wavelength range ranging from 850 nm to 1600 nm, with reduced performance 2 Schematic Diagram 1 Ground 2 RF amp/PIN bias PIN 3 RF amp/PIN bias 4 Ground 5 Ground 6 RF Out Light in RF amp 7 Ground FC optical connector Figure 1. Schematic Diagram Electrical Pinout PAD FUNCTION 1 2 3 4 5 6 7 1 2 3 4 5 6 7 Ground RF amp/PIN bias RF amp/PIN bias Ground Ground RF Out Ground Figure 2. Electrical pinout (top view after 90° bending of the flexible PCB) 3 Package Information A nut with washer is used to fix the receiver to the customer box wall. The aperture in the box wall should be designed in order to avoid rotation of the receptacle. The AFBR-2310Z Receiver is housed in a TO-46 header, joint to a robust FC plastic receptacle, as shown in figure 3. Figure 4 shows the mechanical outline of the flex. A dust cap is provided for shipping, and should be used whenever the receiver is not connected to a fiber patch cord. 15.5 MAX 12 0.9 Area of flex board intended to be bent 4.7 R4 pad 1 2.4 6.8 4 6.8 9.4 M8x0.75 1.4 18.8 FC-port according to IEC 61754-13 7 ISO ( 5 : 1 ) Figure 3. Mechanical layout of Analog Receiver. The flex is shown before bending. All dimensions are in [mm]. R3 1.2 у5.4 R0.7 R0.5 R0.2 2.3 15.8 4 1 0.4 R0.1 0.8 Figure 4. Flex outline. All dimensions are in [mm]. 4 у2.6 у8.5 Figure 5. Example of flex bending when soldered onto a PCB. All dimensions are in [mm]. Handling information Mounting hardware When soldering the flex to the customer PCB, it is advisable to avoid heating or touching with the hot iron the plastic receptacle and the header to flex interconnections. A nut with integrated washer is used to assemble the receiver to a panel (see Figure 6). The flex circuit can be soldered to the customer PCB by hand soldering or with automatic equipment (like hot bar). Recommended application circuit Figure 7 shows the recommended application circuit. A washless flux should be used to solder the flex pads to the PCB. Proper 50 ohm controlled impedance traces are required on the RF output. The RF output has to be AC coupled to the next amplifier stage. This device is sensitive to ESD discharge. To protect the device, it is important to use normal ESD handling precautions. These include use of grounded wrist straps, work-benches and floor wherever a receiver is handled. The RF amp/PIN bias pads should be connected to a 8.2 ohm impedence controlled trace, terminated with a 8.2 ohm resistor in parallel to an inductor. Filtering caps are required on the bias line. A-A SW 13 M8 x 0.75 A R4 R4.6 A R7.5 2 2.6 3.6 Figure 6. Mechanical dimensions of nut+washer. All dimensions are in [mm]. Ground Vcc 1 nF 100 nF 15 nH PIN RF amp/PIN bias 8.2 ohm Ground Ground 50 ohm RFOut RF amp 1 nF Next amplifier stage Ground FC optical Figure 7. Recommended application circuit For product information and a complete list of distributors, please go to our web site: www.avagotech.com Avago, Avago Technologies, and the A logo are trademarks of Avago Technologies in the United States and other countries. Data subject to change. Copyright © 2005-2011 Avago Technologies. All rights reserved. AV02-3183EN - October 7, 2011