ADN2890 3.3 V, 2.7 Gbps Limiting Amplifier
The ADN2890 is high gain limiting amplifiers optimized for use in datacom and telecom optical receivers. It accepts input levels up to 2.0 V p-p differential and has 3 mV pp differential input sensitivity. The ADN2890 provides the receiver functions of Quantization and Loss of Signal Detection. The limiting amplifier also measures average received power based on a direct measurement of the photodiode current with better than +3 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, and has low power dissipation.
The ADN2890 can easily operate at up to 3.2Gb/s to support LX4 transceivers.
Applications
- SFP/SFF/GBIC Optical Transceivers
- OC3-OC48, GbE
- WDM Transponders
- 10GBASE-LX4 Transceivers
Features and Benefits- SFP reference design available
- Input sensitivity: 3 mV p-p
- 80 ps rise/fall times
- CML outputs: 700 mV p-p differential
- Programmable LOS detector: 2 mV to 13 mV
- Single-supply operation: 3.3 V
- Rx signal strength indicator (RSSI):
SFF-8472 compliant average power measurement - Low power dissipation: 130 mW
- Available in space-saving 3 mm × 3 mm 16-lead LFCSP
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Data Sheets
Order Information
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
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| ADN2890ACP-RL7 Obsolete | 16 ld LFCSP (3x3mm, 1.50mm exposed pad) | REEL 1500 | | 0 | 0 | N |
| ADN2890ACPZ-RL Production | 16 ld LFCSP (3x3mm, 1.50mm exposed pad) | REEL 5000 | -40 to 85C | 0 | 4.05 | Y |
| ADN2890ACPZ-RL7 Production | 16 ld LFCSP (3x3mm, 1.50mm exposed pad) | REEL 1500 | -40 to 85C | 0 | 4.05 | Y |
Evaluation Boards
| Part Number | Description | Price | RoHS |
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| ADN2890-EVALZ | Evaluation Board | 350 | Y |
Reference Materials
