LT1228 100MHz Current Feedback Amplifier – Datasheet

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The LT1228 makes it easy to electronically control the gain of signals from DC to video frequencies. The LT1228 implements gain control with a transconductance amplifier (voltage to current) whose gain is proportional to an externally controlled current. A resistor is typically used to convert the output current to a voltage, which is then amplified with a current feedback amplifier. The LT1228 combines both amplifiers into an 8-pin package and operates on any supply voltage from 4V (±2V) to 30V (±15V). A complete differential input, the gain-controlled amplifier can be implemented with the LT1228 and just a few resistors. The LT1228 transconductance amplifier has a high impedance differential input and a current source output with wide output voltage compliance.

LT1228 Pinout

LT1228 Pin Configuration

Pin NoPin NameDescription
1I OUTOutput Current Pin
2INV-INInverting Input Pin
3NON-INV-INNon-Inverting Input Pin
4I SETInput Offset Current Pin
5V-Negative Voltage Pin
6VOUTOutput Voltage Pin
7V+Positive Voltage Pin
8GAINGain Pin

LT1228 Key Features

  • Wide Supply Range: ±2V to ±15V
  • Inputs Common Mode to Within 1.5V of Supplies
  • Outputs Swing Within 0.8V of Supplies
  • Supply Current: 7mA

Application

  • Video DC Restore (Clamp) Circuits
  • Video Differential Input Amplifiers
  • Video Keyer/Fader Amplifiers
  • AGC Amplifiers
  • Tunable Filters
  • Oscillators

You can download this datasheet for LT1228 100MHz Current Feedback Amplifier – Datasheet from the link given below: