FEBRUARY 28, 2008 -- Based on ANADIGICS' (search for ANADIGICS) ACA2601, the new ACA2604 RF amplifier for FTTH applications features improved frequency flatness over temperature as required for domestic U.S. GPON deployments. The amplifier contains an integrated AGC circuit.
Competing products require an additional external circuit to implement AGC; using the ACA2604 can lower bill-of-material costs by eliminating many discrete components, the company says. In addition, the new amplifier features a higher overall gain than the ACA2601, specifically 24 dB versus 21 dB. This reduces the need for post-amplification in the optical network terminal/optical network unit or similar subscriber end equipment.
"ANADIGICS specifically designed the ACA2604 amplifier to meet the ITU's stringent requirements for the higher electrical signaling demands of the emerging GPON market," says Ron Michels, senior vice president and general manager, Broadband Business.
In addition to the 24-dB gain, other key features of the ACA2604 amplifier include:
- 50- to 870-MHz operating frequency.
- High linearity: 65-dBc CTB/CSO (79 channels).
- Low equivalent input noise: 4.5 pA/rtHz.
- 400-ohm differential input impedance (No transformer required for photodiode interface).
- Single +5-V supply.
- 5x5x1-mm RoHS compliant surface-mount package.
- Pin-compatible with the ACA2601 RF amplifier.
- Integrated AGC circuit with 22-dB gain adjust.
General availability of the ACA2604 amplifier is scheduled for 1Q08.
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