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LT5554是一个7位数字控制可编程增益(PG)放大器,具有16分贝增益控制范围。它由一个50Ω的输入可变衰减器,接着是高线性可变跨导放大器的。粗4分贝输入衰减器的步骤是通过2位(PG5,PG6)的数字控制来实现。Feature:
- 1GHz Bandwidth at all Gains
- 48dBm OIP3 at 200MHz ,2Vp-p into 50Ω,ROUT=100Ω
- -88dBc IMD3 at 200MHz,2Vp-p into 50Ω,ROUT=100Ω
- 1.4nV/√Hz Input-Referred-Noise (RTI)
- 20dBm Output P1dB at 70MHz, ROUT = 130Ω
- 2dB to 18dB Gain Range (ROUT = 50Ω)
- 0.125dB Gain Step Size
- 30ps Group Delay Variation
- 5ns Fast Gain Settling Time
- 5ns Fast Overdrive Recovery
- –80dB Reverse Isolation
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