ADN2890ACP-RL7

3.3 V 2.7 Gb / s的限幅放大器 3.3 V 2.7 Gb/s Limiting Amplifier

Product Details

The ADN2890 is a high gain, limiting amplifier optimized for use in SONET, Gigabit Ethernet GbE, and Fibre Channel optical receivers that accept input levels of up to 2.0 V p-p differential and have 3 mV p-p differential input sensitivity. The ADN2890 provides the receiver functions of quantization and loss of signal LOS detection. The ADN2890 can easily operate at up to 3.2 Gb/s to support LX4 transceivers.

The limiting amplifier also measures average received power based on a direct measurement of the photodiode current with better than 1 dB of accuracy over the entire input range of the receiver. This eliminates the need for external average Rx power detection circuitry in SFF-8472 compliant optical transceivers.

The ADN2890 limiting amplifier operates from a single 3.3 V supply, has low power dissipation, and is available in a space-saving 3 mm × 3 mm 16-lead lead frame chip scale package LFCSP.

**Applications**

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SFP/SFF/GBIC optical transceivers

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OC-3/12/48, GbE, Fibre Channel receivers

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10GBASE-LX4 transceivers

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WDM transponders

### Features and Benefits

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SFP reference design available

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Input sensitivity: 3 mV p-p

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80 ps rise/fall times

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CML outputs: 700 mV p-p differential

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Programmable LOS detector: 2 mV to 13 mV

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Rx signal strength indicator RSSI:

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SFF-8472 compliant average power measurement

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Single-supply operation: 3.3 V

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Low power dissipation: 130 mW

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Available in space-saving 3 mm × 3 mm 16-lead LFCSP