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OQ2538HP Datasheet(PDF) 2 Page - NXP Semiconductors |
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OQ2538HP Datasheet(HTML) 2 Page - NXP Semiconductors |
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2 / 24 page  1997 Nov 26 2 Philips Semiconductors Preliminary specification SDH/SONET main amplifier OQ2538HP FEATURES • Differential 100 Ω outputs for direct connection to Current-Mode Logic (CML) inputs • Wide bandwidth (3 GHz) • 48.5 dB limiting gain • Noise figure typically 11 dB • Automatic offset compensation • Input level-detection circuits for Automatic Gain Control (AGC) and Loss Of Signal (LOS) detection • Low power dissipation (typically 270 mW) • Single −4.5 V supply voltage • Low cost LQFP48 plastic package. APPLICATIONS • Main amplifier in Synchronous Digital Hierarchy (SDH) and Synchronous Optical Network (SONET) systems for short, medium and long haul optical transmission • Level detector for laser diode control loops • Wideband RF gain block with internal level detectors. GENERAL DESCRIPTION The OQ2538HP is a limiting amplifier IC intended for use as the main amplifier in 2.5 Gbits/s Non-Return to Zero (NRZ) transmission systems (SDH/SONET). Comprised of four amplifier stages with a total gain of 48.5 dB, it provides for a wide input signal dynamic range at a constant CML compatible output level. Two level-detection circuits are provided for monitoring AGC and LOS input signal levels. An internal automatic offset compensation circuit eliminates offset in the amplifier chain. ORDERING INFORMATION TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION OQ2538HP LQFP48 plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm SOT313-2 |
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