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ANALOG DEVICES LT1228IS8#PBF

Transconductance Amplifier, 1 Amplifier, 36 V, 4 V, 14 V, NSOIC

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ANALOG DEVICES LT1228IS8#PBF
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Manufacturer Part No:
LT1228IS8#PBF
Newark Part No.:
50AK4670
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Technical Datasheet:
LT1228IS8#PBF   Datasheet
ECAD / MCAD
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Product Overview

LT®1228 is a 100MHz current feedback amplifier with DC gain control 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 transconductance amplifier has a high impedance differential input and a current source output with wide output voltage compliance. The transconductance, gm, is set by the current that flows into Pin 5, ISET. The small signal gm is equal to ten times the value of ISET and this relationship holds over several decades of set current. Typical applications are video DC restore (clamp) circuits, video differential input amplifiers, video keyer/fader amplifiers, AGC amplifiers, tunable filters, oscillators.
  • Inputs common mode to within 1.5V of supplies
  • Outputs swing within 0.8V of supplies
  • Input offset voltage is ±10mV maximum (TA=25°C)
  • Input offset voltage drift is 10µV/°C typical (TA=25°C, pins 1, 6, 8. ±5V ≤ VS ≤ ±15V, ISET=0µA)
  • Input noise voltage density is 6nV/√Hz typ (f=1KHz, RF=1K, RG=10 ohm, RS=0 ohm)
  • Input noise current density is 1.4pV/√Hz typ (f=1KHz, RF=1K, RG=10 ohm, RS=10K)
  • Slew rate is 3500V/µs typical (VS=±15V, RF=750 ohm, RG=750 ohm, RL=400 ohm)
  • 8-lead plastic SO package
  • Temperature rating range from -40°C to 85°C

Product Information

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:
1 Amplifier

:
36V

:
-

:
4V

:
14V

:
NSOIC

:
8Pins

:
70µA

:
-

:
500V/µs

:
25Mohm

:
-40°C

:
85°C

:
-

:
MSL 1 - Unlimited

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Technical Documents (1)

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