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MAX3665：622Mbps、超低功耗，3.3V互阻前置放大器，用于SDH/SONET

The MAX3665 low-power transimpedance preamplifier for 622Mbps SDH/SONET applications consumes only 70mW at VCC = 3.3V. Operating from a single +3.3V or +5.0V supply, it converts a small photodiode current to a measurable differential voltage. A DC cancellation circuit provides a true differential output swing over a wide range of input current levels, thus reducing pulse-width distortion. The differential outputs are back-terminated with 50Ω per side. The overall transimpedance gain is nominally 8kΩ. For input signal levels beyond approximately 50µAp-p, the amplifier will limit the output swing to 250mV. The MAX3665's low 55nA input noise provides a typical sensitivity of -33.2dBm in 1300nm, 622Mbps receivers. The MAX3665 is designed to be used in conjunction with the MAX3676 clock recovery and data retiming IC with limiting amplifier. Together they form a complete 3.3V or 5.0V 622Mbps SDH/SONET receiver. In die form, the MAX3665 is designed to fit on a header with a PIN diode. It includes a filter connection that provides positive bias for the photodiode through a 1.5kΩ resistor to VCC. The device is available in an 8-pin µMAX® package.

关键特性 +3.3V or +5.0V Single-Supply Operation 55nARMS Input-Referred Noise 70mW Power Consumption at VCC = 3.3V 8kΩ Gain 450µA Peak Input Current 260ps (max) Deterministic Jitter Differential Output Drives 100ΩLoad 470MHz Bandwidth

MAX3665：典型应用电路 应用 PIN光电二极管前置放大器与接收器 SDH/SONET发生器 SDH/SONET接收器

数据手册DataSheet

关键参数

开发工具

• MAX3665EVKIT

技术资料

• HFAN-06.2: IBIS Data for CML, PECL, and LVDS Interface Circuits
• HFAN-09.0.3: APON Class A, B, & C Physical Layer Requirements

质量和环境数据

• MAX3665.pdf

相关产品

• MAX3680：+3.3V、622Mbps、SDH/SONET 1:8解串器，TTL输出
• MAX3676：622Mbps、3.3V时钟恢复与数据再定时IC，带有限幅放大器
• MAX3681：+3.3V、622Mbps、SDH/SONET 1:4解串器，LVDS输出

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