LT5554 datasheet, vga equivalent, Linear

LT5554 vga equivalent, broadband ultra low distortion 7-bit digitally controlled vga.

Features and benefits

n 1GHz Bandwidth at all Gains n 48dBm OIP3 at 200MHz, 2VP-P into 50Ω, ROUT = 100Ω n
–88dBc IMD3 at 200MHz, 2VP-P into 50Ω, ROUT = 100Ω n 1.4nV/√Hz Input-R.

Application

n Differential ADC Driver n IF Sampling Receivers n VGA IF Power Ampliﬁer n 50Ω Driver n Instrumentation L, LT, LTC and .

Description

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.

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