Datasheet Linear Technology LT5554IUH#PBF — 数据表

LT5554
Broadband Ultra Low
Distortion 7-Bit Digitally
Controlled VGA
DESCRIPTION FEATURES n 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 The LT®5554 is a 7-bit digitally controlled programmable
gain (PG) amplifier with 16dB gain control range. It
consists of a 50Ω input variable attenuator, followed by
a high linearity variable transconductance amplifier. The
coarse 4dB input attenuator step is implemented via 2-bits
of digital control (PG5, PG6). The fine transconductance
amplifier 0.125dB step within 3.875dB gain control range …