LMH5401IRMST

The LMH5401 device is designed for radio frequency (RF), intermediate frequency (IF), or high-speed DC-coupled time-domain applications. This device is well-suited for both DC-coupled and AC-coupled applications. When operating in single-ended to differential (SE-DE) or differential to differential (DE-DE) modes, the LMH5401 generates very low second and third harmonic distortion. This amplifier is optimized for SE-DE and DE-DE systems. It features an ultra-high usable bandwidth from DC to 2 GHz. The LMH5401 can be used for SE-DE conversion in the signal chain across a wide range of applications, such as test and measurement, broadband communications, and high-speed data acquisition, without the need for an external balun. The device provides a common-mode reference input pin to ensure that the amplifier output common mode meets the ADC input requirements. The optional power supply voltage ranges from 3.3 V to 5 V, and dual power supplies can be supported according to application requirements. A power-down function is also available for energy savings. This level of performance is achieved when the device is powered by a 5-V supply and consumes an ultra-low power of 275 mW. The device is fabricated using an advanced complementary BiCMOS process and comes in a space-saving UQFN-14 package for enhanced performance.

Applications

• Gigasamples-per-second (GSPS) ADC driver
• ADC driver for high-speed data acquisition
• ADC driver for microwave-based 1GBPS Ethernet
• DAC buffer
• IF, RF, and baseband gain block
• SAW filter buffer and driver
• Balun replacement (DC to 2GHz)
• Level translator

Key features

• Gain Bandwidth Product (GBP): 8GHz
• Slew Rate: 17,500V/μs
• (1VP-P, 200Ω, DE-DE, G = 12dB):
• 100MHz: HD2 = –104dBc, HD3 = –96dBc
• 200MHz: HD2 = –95dBc, HD3 = –92dBc
• 500MHz: HD2 = –80dBc, HD3 = –77dBc
• 1GHz: HD2 = –64dBc, HD3 = –58dBc
• Low IMD2 and IMD3 (2VP-P, 200Ω, DE-DE, G = 12dB):
• 200MHz: IMD2 = –96dBc, IMD3 = –95dBc
• 500MHz: IMD2 = –80dBc, IMD3 = –83dBc
• 1GHz: IMD2 = –70dBc, IMD3 = –63dBc
• Input Voltage Noise: 1.25 nV/√Hz
• Input Current Noise: 3.5pA/√Hz
• Single-supply and dual-supply operation
• Power Consumption: 55mA
• Power-down feature