1 Features

? Excellent performance driving RF ADCs

– Single-ended to differential

– Differential to differential

? Two fixed-gain variants:

– 16 dB (TRF1208)

– 10 dB (TRF1208B)

? Bandwidth:

– TRF1208: 8 GHz (1-dB), 11 GHz (3-dB)

– TRF1208B: 8.8 GHz (1-dB), 10.5 GHz (3-dB)

? OIP3:

– TRF1208: 37 dBm (2 GHz), 32 dBm (6 GHz)

– TRF1208B: 36 dBm (2 GHz), 28 dBm (6 GHz)

? P1dB:

– TRF1208: 15 dBm (2 GHz), 12.5 dBm (6 GHz)

– TRF1208B: 14 dBm (2 GHz), 11 dBm (6 GHz)

? Noise figure:

– TRF1208: 7 dB (2 GHz), 7 dB (8 GHz)

– TRF1208B: 9.4 dB (2 GHz), 10.2 dB (8 GHz)

? Output noise spectral density (NSD), dBm/Hz:

– TRF1208: –151 (2 GHz), –151 (8 GHz)

– TRF1208B: –154.6 (2 GHz), –153.8 (8 GHz)

? Gain and phase imbalance: ±0.3 dB and ±3o

? Power-down feature

? 3.3?V single-supply operation

? Active current: 138 mA

2 Applications

? RF sampling or GSPS ADC driver

? Aerospace and defense

? Radar seeker front end

? Phased array radar

? Military radios

? Test and measurement

? High-speed digitizers

? Vector signal transceiver (VST)

? 4G/5G wireless BTS

? RF active balun

3 Description

The TRF1208 is a very high performance,

RF amplifier optimized for radio frequency (RF)

applications. This device is excellent for accoupled

applications that require a single-ended

to differential conversion when driving an analog-todigital

converter (ADC) such as the high performance

ADC12DJ5200RF. The on-chip matching components

simplify printed circuit board (PCB) implementation

and provide the highest performance over the

usable bandwidth. The device is fabricated in Texas

Instruments’ advanced complementary BiCMOS

process and is available in a space-saving, WQFNFCRLF

package.

The TRF1208 operates on a single-rail supply and

consumes about 138 mA of active current. A powerdown

feature is also available for power savings.