Texas Instruments LMH9235 RF Gain Block Amplifier
Texas Instruments LMH9235 RF Gain Block Amplifier is a high-performance, single-channel, single-ended input to differential output receive RF gain block amplifier supporting a 3.6GHz center frequency band. The device is well suited to support requirements for the next generation 5G AAS or small cell applications where LNA gain is insufficient to drive the full-scale of an analog front-end (AFE). The RF amplifier provides a typical 17dB gain with a good linearity performance of 34dBm Output IP3 while maintaining about a 3dB noise figure across the 1dB bandwidth. The Texas Instruments LMH9235 is internally matched for 50Ω impedance at both the single-ended input and the differential output, providing an easy interface with an RF-sampling or Zero-IF analog front-end (AFE).
Operating on a single 3.3V supply, the device consumes about 270mW of active power, making it suitable for high-density 5G massive MIMO applications. Also, the device is available in a space-saving 2mm x 2mm, 12-pin QFN package. The device is rated for an operating temperature of up to 105°C to provide a robust system design. There is a 1.8V JEDEC compliant power down pin available for fast power down and power up of the device suitable for time division duplex (TDD) systems.
Features
- Single-channel, single-ended input to differential output RF gain block amplifier
- Supports 3.3GHz – 3.8GHz band directly or 3.7GHz – 4.2GHz band with external matching components
- 17.5dB typical gain across the band
- Less than 3dB noise figure
- 34.5dBm OIP3
- 18dBm output P1dB
- 270mW power consumption on 3.3V single supply
- Up to 105°C TC operating temperature
Applications
- Differential driver for high GSPS ADCs
- Single-ended to differential conversions
- Balun alternatives
- RF gain blocks
- Small cell or m-MIMO base stations
- 5G Active Antenna Systems (AAS)
- Wireless cellular base station
- Low-cost radios
Functional Block Diagram
Publicado: 2020-08-07
| Actualizado: 2024-07-30