Description
CXA1685M is a low noise transimpedance amplifier, particularly suitable for fiber-optic system.
CXA1685M is fabricated using high-speed bipolar process.

Features
• High transimpedance: Q 11.2kΩ (Typ.) Q 10.8kΩ (Typ.)
• Wide band width (–3dB): Q 177MHz (Typ.) Q 157MHz (Typ.)
• Maximum input current: 1mA
• Low noise: 1.7pA/√ Hz (Typ.)

Applications
• SONET/SDH: 155Mb/s
• Fiber channel: 133Mb/s
• FDDI: 125Mb/s