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AD807-155BR-REEL7 데이터시트(PDF) 10 Page - Analog Devices |
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AD807-155BR-REEL7 데이터시트(HTML) 10 Page - Analog Devices |
10 / 12 page REV. A –10– AD807 NC = NO CONNECT 1 2 3 4 8 7 6 5 1 2 5 6 7 3 4 8 16 15 12 11 10 14 13 9 VEE SDOUT AVCC PIN NIN AVCC THRADJ AVEE AD807 NC IIN NC VBYP +VS +OUT –VS –OUT R10 154 R9 154 R6 100 C7 R5 100 R1 100 R2 100 C1 0.1µF C2 0.1µF C3 0.1µF DATAOUTN DATAOUTP CLKOUTN CLKOUTP C4 0.1µF C6 0.1µF R4 100 R8 100 R7 100 R3 100 C8 R12 154 TP1 TP2 R11 154 C5 0.1µF CD TP7 SDOUT C11 TP6 TP5 R13 THRADJ C9 10µF C10 GND TP4 R14 50 R15 50 R16 301 R17 3.65k C13 0.1µF 5V TP3 AD8015 C15 0.1µF 15pF 10µF 0.1µF 15pF 0.1µF 0.01µF ABB HAFO 1A227 FC HOUSING 0.8 A/W, 0.7pF 2.5GHz NOTES 1. ALL CAPS ARE CHIP, 15pF ARE MICA. 2. 150nH ARE SMT C14 0.1µF 50 Ω LINE 50 Ω LINE C12 2.2µF 150nH 150nH DATAOUTN DATAOUTP VCC2 CLKOUTN CLKOUTP VCC1 CF1 CF2 Figure 23. Low Cost 155 Mbps Fiber Optic Receiver Schematic Table I. AD807—AD8015 Fiber Optic Receiver Circuit: Output Bit Error Rate & Output Jitter vs. Input Power Average Optical Input Power Output Bit Output Jitter (dBm) Error Rate (ps rms) –6.4 Loses Lock –6.5 7.5 × 10–3 –6.6 9.4 × 10–4 –6.7 0 × 10–14 –7.0 to –35.5 0 × 10–14 <40 –36.0 3 × 10–12 <40 –36.5 4.8 × 10–10 –37.0 2.8 × 10–8 –38.0 1.3 × 10–5 –39.0 1.0 × 10–3 –39.2 1.9 × 10–3 –39.3 Loses Lock APPLICATIONS Low Cost 155 Mbps Fiber Optic Receiver The AD807 and AD8015 can be used together for a complete 155 Mbps Fiber Optic Receiver (Quantizer and Clock Recovery, and Transimpedance Amplifier) as shown in Figure 23. The PIN diode front end is connected to a single mode 1300 nm laser source. The PIN diode has 3.3 V reverse bias, 0.8 A/W re- sponsively, 0.7 pF capacitance, and 2.5 GHz bandwidth. The AD8015 outputs (POUT and NOUT) drive a differential, con- stant impedance (50 Ω) low-pass filter with a 3 dB cutoff of 100 MHz. The outputs of the low-pass filter are ac coupled to the AD807 inputs (PIN and NIN). The AD807 PLL damping factor is set at 7 using a 0.22 µF capacitor. Figure 24. Receiver Output (Data) Eye Diagram, –7.0 dBm Optical Input Figure 25. Receiver Output (Data) Eye Diagram, –36.0 dBm Optical Input |
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