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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.
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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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.
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.
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