1 Features

• Excellent differential-to-single-ended RF

performance

• Bandwidth (3dB): 12GHz

• Power gain: 15.5dB

• OP1dB:

– 2GHz: 12dBm

– 6GHz: 9.8dBm

• OIP3:

– 2GHz: 28dBm

– 6GHz: 30dBm

• Noise figure (NF) and input noise spectral density:

– 2GHz: 11dB and –163dBm/Hz

– 6GHz: 11.4dB and –162.6dBm/Hz

• HD2:

– 1GHz: –58dBc at 2dBm

• Additive phase noise:

– 1GHz: –154.6dBc/Hz at 10kHz offset

• Gain and phase imbalance: ±0.6dB and ±2º

• Differential input matched to 100Ω, single-ended

output matched to 50Ω

• Supports both ac-coupled and dc-coupled

applications

• Power-down feature

• 5V supply

• Active current: 175mA

2 Applications

• Directly interfaces with RF DACs

• Aerospace and defense

• Phased array radar

• Military radios

• 4G and 5G wireless BTS

• Test and measurement

• Active probe

3 Description

The TRF1108 is a very high performance, differentialto-

single-ended (D2S) amplifier optimized for radiofrequency

(RF) applications. The device is excellent

choice for applications that require a D2S conversion

when driven by a digital-to-analog converter (DAC)

such as the high-performance DAC39RF10 or

AFE7950. The on-chip matching components simplify

printed circuit board (PCB) implementation and

provide the highest performance over the usable

bandwidth. The device is fabricated using Texas

Instruments’ advanced complementary BiCMOS

process and is available in a space-saving, WQFNFCRLF

2mm x 2mm package.

The TRF1108 operates on a single 5V supply

with an internally set common-mode voltage for accoupled

applications. Dual supplies with an externally

set input common-mode voltage enables dc-coupled

applications. A power-down feature is also available

for power savings.