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622Mbps、超低功耗,3.3V互阻前置放大器,用于SDH/SONET

产品详情

The MAX3665 low-power transimpedance preamplifier for 622Mbps SDH/SONET applications consumes only 70mW at VCC = 3.3V. Operating from a single +3.3V or +5.0V supply, it converts a small photodiode current to a measurable differential voltage. A DC cancellation circuit provides a true differential output swing over a wide range of input current levels, thus reducing pulse-width distortion. The differential outputs are back-terminated with 50Ω per side.

The overall transimpedance gain is nominally 8kΩ. For input signal levels beyond approximately 50µAp-p, the amplifier will limit the output swing to 250mV. The MAX3665's low 55nA input noise provides a typical sensitivity of -33.2dBm in 1300nm, 622Mbps receivers.

The MAX3665 is designed to be used in conjunction with the MAX3676 clock recovery and data retiming IC with limiting amplifier. Together they form a complete 3.3V or 5.0V 622Mbps SDH/SONET receiver.

In die form, the MAX3665 is designed to fit on a header with a PIN diode. It includes a filter connection that provides positive bias for the photodiode through a 1.5kΩ resistor to VCC. The device is available in an 8-pin µMAX® package.

主要特征

  • +3.3V or +5.0V Single-Supply Operation
  • 55nARMS Input-Referred Noise
  • 70mW Power Consumption at VCC = 3.3V
  • 8kΩ Gain
  • 450µA Peak Input Current
  • 260ps (max) Deterministic Jitter
  • Differential Output Drives 100ΩLoad
  • 470MHz Bandwidth

应用/用途

  • PIN光电二极管前置放大器与接收器
  • SDH/SONET发生器
  • SDH/SONET接收器
Parametric specs for Transimpedance Amplifiers (TIA)
Target Oper. Range (Gbps) <1
Data Rate (Mbps) (max) 622
VSUPPLY (V) 5
ICC (mA) (typ) 25
Input Noise (nA) (max) 62
Bandwidth (MHz) (min) 470
ZT (kΩ) 7
Package/Pins DICE SALES/N/A
UMAX/8
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简化框图

MAX3665:典型应用电路 MAX3665:典型应用电路 Zoom icon

技术文档

设计与质量

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参量

Parametric specs for Transimpedance Amplifiers (TIA)
Target Oper. Range (Gbps) <1
Data Rate (Mbps) (max) 622
VSUPPLY (V) 5
ICC (mA) (typ) 25
Input Noise (nA) (max) 62
Bandwidth (MHz) (min) 470
ZT (kΩ) 7
Package/Pins DICE SALES/N/A
UMAX/8

主要特征

  • +3.3V or +5.0V Single-Supply Operation
  • 55nARMS Input-Referred Noise
  • 70mW Power Consumption at VCC = 3.3V
  • 8kΩ Gain
  • 450µA Peak Input Current
  • 260ps (max) Deterministic Jitter
  • Differential Output Drives 100ΩLoad
  • 470MHz Bandwidth

应用/用途

  • PIN光电二极管前置放大器与接收器
  • SDH/SONET发生器
  • SDH/SONET接收器

描述

The MAX3665 low-power transimpedance preamplifier for 622Mbps SDH/SONET applications consumes only 70mW at VCC = 3.3V. Operating from a single +3.3V or +5.0V supply, it converts a small photodiode current to a measurable differential voltage. A DC cancellation circuit provides a true differential output swing over a wide range of input current levels, thus reducing pulse-width distortion. The differential outputs are back-terminated with 50Ω per side.

The overall transimpedance gain is nominally 8kΩ. For input signal levels beyond approximately 50µAp-p, the amplifier will limit the output swing to 250mV. The MAX3665's low 55nA input noise provides a typical sensitivity of -33.2dBm in 1300nm, 622Mbps receivers.

The MAX3665 is designed to be used in conjunction with the MAX3676 clock recovery and data retiming IC with limiting amplifier. Together they form a complete 3.3V or 5.0V 622Mbps SDH/SONET receiver.

In die form, the MAX3665 is designed to fit on a header with a PIN diode. It includes a filter connection that provides positive bias for the photodiode through a 1.5kΩ resistor to VCC. The device is available in an 8-pin µMAX® package.

简化框图

MAX3665:典型应用电路 MAX3665:典型应用电路 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索您所需的答案。

过滤搜索

Maxim专业的应用工程师团队也可以为您解答技术问题,请 访问Maxim的 支持中心