LT1225CN8#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1225CN8#PBF is a very high speed operational amplifier featuring a 150MHz gain bandwidth and 400V/μs slew rate. It operates on a wide supply range of ±2.5V to ±15V with a typical 7mA supply current. The device offers excellent DC performance, including a maximum input offset voltage of 1mV and a large signal voltage gain of 20V/mV into a 500Ω load. It provides ±12V output swing into 500Ω loads and drives all capacitive loads stably. The component is housed in an 8-lead plastic DIP (N8) package.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Features reduced input offset voltage and higher DC gain compared to devices with comparable bandwidth and slew rate.
• Capable of driving large capacitive loads without stability issues due to internal compensation sensing the load-induced output pole.
• Includes slew enhancement circuitry to balance non-inverting and inverting slew rate responses.

Instrumentation, Op Amps, Buffer Amps Applications

• Data acquisition systems
• Video and RF amplification
• Cable drivers

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific suffix CN8 corresponds to the 8-lead plastic DIP package when sourcing. Confirm RoHS compliance status for the PBF designation. Ensure the application circuit maintains a noise gain of 5 or greater for stable operation. Check absolute maximum ratings regarding differential input voltage limits during integration.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring fast settling times and high DC accuracy alongside high-speed performance. It is suitable for instrumentation amplifiers and buffers where driving heavy capacitive loads is necessary. Consider the 150MHz gain bandwidth for wideband requirements. Ensure the power supply range fits within the ±2.5V to ±15V specification for optimal performance.

Instrumentation, Op Amps, Buffer Amps Part Context

The LT1225 belongs to a family of fast, high-performance amplifiers utilizing advanced bipolar complementary processing. It serves as a direct replacement for HA2541, HA2544, AD847, EL2020, and LM6361 in applications with a noise gain of 5 or greater, provided nulling circuitry is removed. This positioning highlights its role in legacy high-speed analog designs.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Can replace HA2541, HA2544, AD847, EL2020, and LM6361 if the circuit configuration ensures a noise gain of 5 or greater. Nulling circuitry must be removed when substituting these parts. Verify that the new design accommodates the specific input bias and offset characteristics of the LT1225.

Instrumentation, Op Amps, Buffer Amps FAQ

Is the LT1225 stable with capacitive loads?

Yes, the LT1225 is stable with all capacitive loads. It achieves this by sensing the load-induced output pole and adding compensation at the amplifier gain node.

What is the minimum stable noise gain for the LT1225?

The LT1225 is stable in a noise gain of 5. Straightforward gain configurations of 5 or -4 are stable, though lag compensation can allow lower DC gains with higher AC gains.

How does the LT1225 handle inverting vs non-inverting slew rates?

Slew enhancement circuitry has been added to the LT1225 so that the non-inverting slew rate response is balanced with the inverting response, preventing asymmetrical slewing.