ADN2882A-DF

Overview

The ADN2882A-DF is a 3.3 V SiGe transimpedance amplifier (TIA) die designed for optical receivers operating up to 4.25 Gbps. It features a typical bandwidth of 3.5 GHz and an input noise current density of 8 pA/√Hz, enabling optical sensitivities of −22.0 dBm and −20.4 dBm under specified conditions. The device provides a differential transimpedance of 3700 V/A with a power dissipation of 80 mW. Key integrated features include an on-chip RSSI function, a low-frequency cutoff of 12 kHz, and an internal PD filter comprising a 200 Ω resistor and 20 pF capacitor.

Feature Summary

• Integrates a high-gain transimpedance amplifier with an on-chip Receive Signal Strength Indicator (RSSI) circuit for average photocurrent monitoring.
• Includes an internal photodiode filter network consisting of a 200 Ω resistor and 20 pF capacitor to facilitate compact assembly.
• Provides a defined low-frequency cutoff without requiring external capacitors in non-SONET applications.
• Features differential CML outputs with on-chip 50 Ω termination.

Applications

• 4.25 Gbps optical receivers
• GbE/FC optical receivers
• SFF-8472-compliant receivers
• PIN/APD-TIA receiver optical subassemblies

Procurement Notes

Verify the ADN2882A-DF status as obsolete before procurement planning. Confirm availability through Analog Devices sales representatives, as this specific reconstituted die format may require direct engagement. Ensure compatibility with existing TO-46 header assembly designs and validate that the 17-pad bare die specifications meet the mechanical constraints of the target optical subassembly.

Selection Notes

Select this component for designs requiring a 3.5 GHz bandwidth and low noise performance at 4.25 Gbps data rates. The integrated RSSI and internal PD filter simplify the front-end design by reducing external component count. Consider the bare die form factor when designing custom optical subassemblies, particularly regarding wire bonding symmetry and ground connection minimization to maintain signal integrity.

Part Context

The ADN2882A-DF represents the reconstituted die variant of the ADN2882 family, manufactured by Analog Devices Inc. This version is supplied on an 8-inch metal film frame, distinct from the bare die sales option. It is part of a series of high-speed SiGe TIAs intended for fiber optic communication systems, specifically targeting applications where small form factor integration and low power consumption are critical requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Contact Analog Devices sales for information regarding alternative components or updated product lines.