LT1228CS8#PBF Video Operational Amplifiers (Op Amps) by Analog Devices

Status: Production
Series: LT1228
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock

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, 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. The transconductance, gm, is set by the current that flows into Pin5, ISET. The small signal gm is equal to ten times the value of ISET and this relationship holds over several decades of set current. The voltage at Pin 5 is two diode drops above the negative supply, Pin 4.The LT1228 current feedback amplifier has very high input impedance and therefore it is an excellent buffer for the output of the transconductance amplifier. The current feedback amplifier maintains its wide bandwidth over a wide range of voltage gains making it easy to interface the transconductance amplifier output to other circuitry. The current feedback amplifier is designed to drive low impedance loads, such as cables, with excellent linearity at high frequencies.

Where to Buy

Prices starting from US$7.33

Distributor Stock
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Analog Devices
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Chip One Stop
from US$7.33
100
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Newark Electronics
from US$8.68
80
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element14
from US$8.08
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Farnell
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Richardson RFPD
from US$7.36
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Features

Very Fast Transconductance Amplifier
Bandwidth: 75MHz
Outputs Swing Within 0.8V of Supplies
gm = 10 × ISET
Low THD: 0.2% at 30mVRMS Input
Wide ISET Range: 1µA to 1mA
Very Fast Current Feedback Amplifier
Bandwidth: 100MHz
Slew Rate: 1000V/µs
Output Drive Current: 30mA
Differential Gain: 0.04%
Differential Phase: 0.1°
High Input Impedance: 25MΩ, 6pF
Wide Supply Range: ±2V to ±15V
Inputs Common Mode to Within 1.5V of Supplies
Supply Current: 7mA
Available in 8-Lead PDIP and SOIC Packages

Alternative Descriptions

100MHz C F Amp w/ DC Gain Cont | Analog Devices
Transconductance Amp, Nsoic | Newark Electronics
TRANSCONDUCTANCE AMP, NSOIC | element14
AMPLIFIER - OP AMPS | Richardson RFPD


LT1228CS8#PBF Semiconductors - ICs by Linear Technology

AMP CURRENT FEEDBACK 1228 SOIC8

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

No. of Amplifiers 1 Amplifier, 1Amplifiers
Supply Voltage 15V
Gain Bandwidth 75MHz
Input Voltage Min -13.5V
Input Voltage Max 13.5V
Amplifier Case Style SOIC
No. of Pins 8Pins
Output Current Min 30mA
Output Current - Max 125mA
Slew Rate 500V/µs
Input Resistance 0.025ohm
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
Amplifier Type Video
Bandwidth 100MHz
Base Number 1228
Common Mode Voltage VCM 13.5V
Gain dB Max 65dB
IC Temperature Range Commercial
Input Offset Drift Max 10µV/°C
Input Offset Voltage Max 10mV
Input Voltage -13.5V to 13.5V
Op Amp Type Current Feedback
Operating Temperature Range 0°C to +70°C
Operational Amplifier Features Current Feedback Amplifier
Output Current Range 30mA to 125mA
Settling Time 45ns
Supply Current 7mA
Supply Voltage + Nom 18V
Supply Voltage Max 15V
Supply Voltage Min 2V
Supply Voltage Nom 18V

Frequently Asked Questions

Where can I find additional details, specifications and documents for a LT1228CS8#PBF?

Additional datasheets, footprints and schematics for LT1228CS8#PBF are listed on our Part Details page. You can also find images and similar parts to LT1228CS8#PBF on this page.

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What category does LT1228CS8#PBF fall under?

The LT1228CS8#PBF is listed under Video Operational Amplifiers (Op Amps).

Can I view similar or alternative parts?

You can view similar parts to LT1228CS8#PBF when available in the Video Operational Amplifiers (Op Amps) range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the LT1228CS8#PBF you can contact the distributor directly for product support, shipping queries etc.

Is the LT1228CS8#PBF RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

Which authorised distributors for LT1228CS8#PBF have stock available?

Authorised distributors including Analog Devices, Chip One Stop, Newark Electronics, element14 and Farnell have stock available or on a lead time for LT1228CS8#PBF.

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