LT1228CN8#PBF Video Operational Amplifiers (Op Amps) by Analog Devices

Status: Production
Series: LT1228
RoHS: Compliant
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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, 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.

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Prices starting from US$4.86

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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

Last 6 months Inventory & Pricing History


Alternative Descriptions

OP-AMP, 0 TO 70DEG C, PDIP-8 | element14
IC: operational amplifier | TME
Op Amp Single High Speed Amplifier ±15V/30V 8-Pin PDIP N Tube | Richardson RFPD


LT1228CN8#PBF Amplifiers & Comparators by Linear Technology

AMP CURRENT FEEDBACK 1228 DIP8

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

Specifications

No. of Amplifiers 1 Amplifier, 1Amplifiers
Bandwidth 100MHz
Slew Rate 3500V/µs
Supply Voltage Range 2V to 15V
Amplifier Case Style DIP
No. of Pins 8Pins
Operating Temperature Min 0°C
Operating Temperature Max 70°C
Product Range -
Automotive Qualification Standard -
MSL -
SVHC No SVHC (15-Jan-2018)
Amplifer Supply Voltage 2V to 15V
Amplifier Type Video
Base Number 1228
Common Mode Voltage VCM 13.5V
Frequency 75MHz
Gain Bandwidth 75MHz
Gain dB Max 65dB
IC Generic Number 1228
IC Temperature Range Commercial
Input Offset Drift Max 10µV/°C
Input Offset Voltage Max 10mV
Logic Function Number 1228
Op Amp Type Current Feedback
Operating Temperature Range 0°C to +70°C
Operational Amplifier Features Current Feedback Amplifier
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 LT1228CN8#PBF?

Additional datasheets, footprints and schematics for LT1228CN8#PBF are listed on our Part Details page. You can also find images and similar parts to LT1228CN8#PBF on this page.

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What category does LT1228CN8#PBF fall under?

The LT1228CN8#PBF is listed under Video Operational Amplifiers (Op Amps).

Can I view similar or alternative parts?

You can view similar parts to LT1228CN8#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 LT1228CN8#PBF you can contact the distributor directly for product support, shipping queries etc.

Is the LT1228CN8#PBF RoHS compliant?

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

Which authorised distributors for LT1228CN8#PBF have stock available?

Authorised distributors including element14, Farnell, TME and Richardson RFPD have stock available or on a lead time for LT1228CN8#PBF.

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