ADN2892ACPZ-500RL7
数据手册.pdfANALOG DEVICES ADN2892ACPZ-500RL7 限幅放大器, 1.5 GHz, 2.9 V, 3.6 V, LFCSP, 16 引脚, -40 °C
Product Details
The ADN2892 is a 4.25 Gbps limiting amplifier with integrated loss of signal LOS detection circuitry and a received signal strength indicator RSSI. This part is optimized for Fibre Channel FC and Gigabit Ethernet GbE optoelectronic conversion applications. The ADN2892 has a differential input sensitivity of 3.5 mV p-p and accepts up to a 2.0 V p-p differential input overload voltage. The ADN2892 has current mode logic CML outputs with controlled rise and fall times.
The ADN2892 has a selectable low-pass filter with a −3 dB cutoff frequency of 1.5 GHz. By setting BW_SEL to Logic 0, the filter can limit the relaxation oscillation of a low cost CD laser used in a legacy 1 Gbps FC transmitter. The limited BW also reduces the rms noise and in turn improves the receiver optical sensitivity for a lower data rate application, such as 1× FC and GbE.
By monitoring the bias current through a photodiode, the onchip 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 ADN2892 is available in a 3 mm × 3 mm, 16-lead LFCSP.
**Applications**
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- 1×, 2×, and 4× FC transceivers
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- SFP/SFF/GBIC optical transceivers
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- GbE transceivers
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- Backplane receivers
### Features and Benefits
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- Input sensitivity: 3.5 mV p-p
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- 70 ps rise/fall times
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- CML outputs: 750 mV p-p differential
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- Bandwidth selectable for multirate 1×/2×/4× FC modules
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- Optional LOS output inversion
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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: 160 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