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Details, datasheet, quote on part number:OQ2538U
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Datasheet text preview:
INTEGRATED CIRCUITS
DATA SHEET
OQ2538HP; OQ2538U SDH/SONET STM16/OC48 main amplifiers
Product specification Supersedes data of 1998 Oct 14 File under Integrated Circuits, IC19 2000 Sep 29
Philips Semiconductors
Product specification
SDH/SONET STM16/OC48 main amplifiers
FEATURES · Differential 100 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. ORDERING INFORMATION TYPE NUMBER OQ2538HP OQ2538U PACKAGE NAME LQFP48 - DESCRIPTION
OQ2538HP; OQ2538U
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.
VERSION SOT313-2 -
plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm bare die; dimensions 2070 × 2 070 × 380 µm
2000 Sep 29
2
Philips Semiconductors
Product specification
SDH/SONET STM16/OC48 main amplifiers
BLOCK DIAGRAM
OQ2538HP; OQ2538U
handbook, full pagewidth
VEE
3 A 43 19 B IN INQ 8 6 AMP A AMP B AMP C AMP D 18 32 30
AGC AGCDC LOS LOSDC OUT OUTQ
BAND GAP 21 22
reference voltage for all cells 45 44
OQ2538HP
MGE745
REF CAPA
COFF
COFFQ
GND
Fig.1 Block diagram.
2000 Sep 29
3
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