Hittite Microwave HMC914LP4E limiting amplifier




General Description

HMC914LP4E is a limiting amplifier designed to support data transmission rates up to 12.5 Gbps. The amplifier can operate over a wide range of input voltage levels and provides constant-level differential output swing. HMC914LP4E features a loss of signal (LOS) indicator output where the input signal amplitude threshold level can be adjusted using the LOSTH pin. HMC914LP4E also features an output level control pin, VAC, which allows for loss compensation or for output signal level optimization. Differential output signal swing can be adjusted up to 750 mVp-p. An integrated DC offset compensation is also provided on chip. The HMC914LP4E provides an analog RSSI output voltage which is proportional to input signal amplitude.

All single-ended input signals are terminated with 50 ohms to +3.3V on-chip, and may be either AC or DC coupled. The outputs of the HMC914LP4E may be operated either differentially or single-ended. The HMC914LP4E operates from a single +3.3V DC supply and is available in a plastic RoHS compliant 4×4 mm SMT package.




Features

• Supports Data Rates up to 12.5 Gbps
• Differential Small Signal Gain: 32 dB
• Programmable Loss-of-Signal
Detection (LOS)
• Automatic Output Disable Mode
• Adjustable Differential Saturated
O/P Voltage Swing up to 750 mV
• Integrated DC Offset Correction
• Received Signal Strength
Indicator (RSSI) Output
• 24 Lead 4x4mm SMT Package: 16mm²

Typical Applications

• SONET/SDH-Based
Transmission Systems
• OC-192 Fiber Optic Modules
• 10 Gigabit Ethernet
• 8x and 10x Fiber Channel
• Wideband RF Gain Block

Hittite Microwave HMC914LP4E limiting amplifier

Hittite Microwave’s latest limiting amplifier, the HMC914LP4E has a loss-of-signal detection capability.

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The amplifier is designed to support data transmission rates up to 12.5Gbit/s, operates from a single +3.3 Vdc supply, and provides 32dB of differential small signal gain.

The amplifier can operate over a wide range of input voltage levels and provides a constant-level differential output swing which may be adjusted up to 750mVp-p. The outputs of the HMC914LP4E may be operated either singled-ended or differentially. All single-ended input signals are terminated with 50ohm to +3.3V on-chip, and may be either AC or DC coupled.

The loss-of-signal (LOS) indicator output and a control pin for adjustment of the input signal amplitude threshold level. The HMC914LP4E also features an output level control pin, which allows for loss compensation or for output signal level optimization.

The HMC914LP4E supports data rates up to 12.5Gbit/s, and so is suitable for SONET/SDH-based transmission systems, OC-192 Fiber Optic modules, 10Gibabit Ethernet (GbE), 8x & 10x Fiber Channel, or for use as a wideband RF gain block.

 

For more read: Hittite Microwave HMC914LP4E limiting amplifier




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