ADN2891ACPZ-500RL7

ANALOG DEVICES  ADN2891ACPZ-500RL7  限幅放大器, 2.9 V, 3.6 V, LFCSP, 16 引脚, -40 °C

Product Details

The ADN2891 is a 3.2 Gbps limiting amplifier with integrated loss-of-signal LOS detection circuitry and a received signal strength indicator RSSI. This part is optimized for SONET, Gigabit Ethernet GbE, and Fibre Channel optoelectronic conversion applications. The ADN2891 has a differential input sensitivity of 4 mV p-p and accepts up to a 2.0 V p-p differential input overload voltage. The ADN2891 supports current mode logic CML outputs with controlled rise and fall times.

By monitoring the bias current through a photodiode, the on-chip RSSI detector measures the average power received with 2% typical linearity over the entire valid input range of the photodiode. The on-chip RSSI detector facilitates SFF-8472-compliant optical transceivers by eliminating the need for external RSSI detector circuitry.

Additional features include a programmable loss-of-signal LOS detector and output squelch.

The ADN2891 is available in a 3 mm × 3 mm, 16-lead LFCSP.

**Applications**

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SFP/SFF/GBIC optical transceivers

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

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10GBASE-LX4 transceivers

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WDM transponders

### Features and Benefits

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Input sensitivity: 4 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: 3.5 mV to 35 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: 145 mW

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

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Extended temperature range: −40°C to +95°C

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SFP reference design available