ADN2891ACPZ-RL

3.3 V ， 3.2 Gbps速率限幅放大器 3.3 V, 3.2 Gbps, Limiting Amplifier

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**

.

SFP/SFF/GBIC optical transceivers

.

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

.

10GBASE-LX4 transceivers

.

WDM transponders

### Features and Benefits

.

Input sensitivity: 4 mV p-p

.

80 ps rise/fall times

.

CML outputs: 700 mV p-p differential

.

Programmable LOS detector: 3.5 mV to 35 mV

.

Rx signal strength indicator RSSI

.

SFF-8472-compliant average power measurement

.

Single-supply operation: 3.3 V

.

Low power dissipation: 145 mW

.

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

.

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

.

SFP reference design available