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| CXA1684M High-Speed Transimpedance Amplifier Description CXA1684M is a low noise transimpedance amplifier, particularly suitable for fiber-optic system. CXA1684M is fabricated using high-speed bipolar process. Features * High transimpedance: 8 pin SOP (Plastic) (Q) 3.9 k (Typ.) (QB) 3.7 k (Typ.) * Wide band width (-3dB): (Q) 630 MHz (Typ.) (QB) 390 MHz (Typ.) * Maximum input current: 1mA Applications * Q output SONET/SDH: 622 Mb/s Fiber channel: 532 Mb/s * Differential output SONET/SDH: 155 Mb/s Fiber channel: 133,266 Mb/s ESCON: 200 Mb/s Absolute Maximum Ratings * Supply voltage VCC-VEE -0.3 to +7.0 * Minimum input voltage VIN VEE * Input current IIN -1 to +1 * Output current 0 to 50 (Continuous) IO (Q/QB) (Surge) 0 to 100 * Storage temperature Tstg -65 to +150 V V mA mA mA C Recommended Operating Conditions * DC power supply voltage VCC-VEE 4.75 to 5.46 V * Operating ambient temperature Ta 0 to +85 C Structure Bipolar silicon monolithic IC Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. --1-- E94X23A8Y CXA1684M Block Diagram and Pin Assignment VCC 5 4 VCC IN 6 3 QB C 7 Zt 2 Q VEE 8 1 VEE Electrical Characteristics * DC Electrical Characteristics Item Supply current Transimpedance Q QB Symbol IEE ZTQ ZTQB IIN IIN2 VIN VOUTQ VOUTQB VC CIN (VCC=GND, VEE=-5.46 to -4.75V, Ta=0 to +85C) Test Condition input pin left open Min. -15.1 2.3 1.9 +100 +1000 Typ. -11.2 3.9 3.7 Max. 5.6 5.4 Unit mA k A VEE+2.5 VEE+1.9 VCC-2.6 VEE+1.7 2.0 Max. Input Current before clipping Max. Input Current Input voltage Q Output voltage QB Input capacitance input pin left open V pF * AC Electrical Characteristics Item Bandwidth Q (-3 dB) QB Input Current Noise Spectral Density (Mean value) Symbol f-3 dBQ f-3 dBQB In (VCC=GND, VEE=-5.46 to -4.75 V, Ta=0 to +85 C) Test Condition 1 fN=1 kHz to 622 MHz Min. 435 187 Typ. 630 390 4.0 Max. Unit MHz pA/Hz 1 Assumes photodiode capacitance; CPD<1.0 pF, output load capacitance; Cout=2.0 pF, Q: 620 to VEE, QB: 1.3k to VEE --2-- CXA1684M Application Circuit VCC PD 0.1F IN VCC 5 4 QB 0.1F QB Q 6 C 3 7 1.0F Zt 2 VEE 1.3k Q 620 VEE 8 VEE 1 VEEO Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same. Cautions for Handling 1. As the electronic breakdown level is weak, take care to handle. 2. The internal resistor of the output pin does not have the capability of drive. The terminal resistors must be connected. The resistance value is shown in application circuit. --3-- CXA1684M Typical Performance * Typical Frequency Characteristics Q: f-3dB=965MHz ATTEN 10dB RL -13.0dBm 5dB/ MKR -24.25dBm 965MHz ATTEN 10dB RL -13.0dBm 5 dB/ QB: f-3dB=440MHz MKR -25.08dBm 440MHz MKR 965MHz -24.25dBm MKR 440MHz -25.08dBm G G CENTER 750MH z SPAN 1.500GHz RBW 1.0MHz VBW 1.0MHz SWP 50ms START 0Hz STOP 1.200GHz 1.0MHz VBW 1.0MHz RBW SWP 50ms * Typical Output Waveforms IN=-30dBm, 310MHz = 20.00mVolts/div Ch.1 = 20.00mVolts/div Ch.2 Timebase = 1.00ns/div Ch.1 Parameters Rise Time = 941.4ps = 310.540MHz Freq. = 1.6036ns +Width Overshoot = 0.000% RMS Volts = 30.818mVolts QB Q Offset Offset Delay p-p Volts Fall Time Period -Width Preshoot Dutycycle = = = = = = = = = 0.000Volts 0.000Volts 17.9200ns 90.625mVolts 1.0630ns 3.2202ns 1.6166ns 0.000% 49.79% 17.9200ns 22.9200ns 27.9200ns --4-- CXA1684M * Output Duty Cycle Distortion VS. Input Current 100 75 DCD (%) 50 25 0 0 200 400 600 lin (A) 800 1000 * Test Circuit TEST BOARD VCC Signal Generator 1F Spectrum Analyzer/ Digitizing Oscilloscope Vin Iin= Vin 100 ATT -26dB Vin 51 100 1 1 1p 5 6 7 8 CXA1684M 4 3 2 1 1.3 2p 1 51 VQB 50 620 1 51 2p VQ 50 Tracking Generator --5-- CXA1684M Package Outline Unit : mm 8PIN SOP (PLASTIC) + 0.4 1.25 - 0.15 + 0.4 5.0 - 0.1 8 5 A 0.10 + 0.3 4.4 - 0.1 1 4 1.27 b 0.24 M 0 to 10 (0.15) + 0.1 0.15 - 0.05 b = 0.4 0.03 + 0.03 0.15 - 0.01 + 0.1 b = 0.4 - 0.05 (0.4) DETAILA DETAIL B : SOLDER DETAIL B : PALLADIUM PACKAGE STRUCTURE PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE SOP-8P-L03 SOP008-P-0225 LEAD TREATMENT LEAD MATERIAL PACKAGE MASS EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.1g NOTE : PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). --6-- 0.5 0.2 B 6.4 0.4 + 0.15 0.1 - 0.1 |
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