SMP18FP

Special Purpose Amplifiers Overview

The SMP18FP is an octal sample-and-hold amplifier manufactured by Analog Devices Inc. in a 16-pin plastic DIP package. It integrates eight internal buffer amplifiers, an input multiplexer, and hold capacitors within an advanced oxide isolated CMOS process. The device supports single or dual supply operation with a voltage range of 7 to 15 volts. Key electrical characteristics include a typical linearity error of 0.01%, a maximum droop rate of 40 mV/s, and acquisition times ranging from 2.5 to 3.5 microseconds depending on the input signal level.

Special Purpose Amplifiers Feature Summary

• Integrates eight internal buffer amplifiers, input multiplexer, and hold capacitors for high-level system integration.
• Features break-before-make channel addressing and an internal decoder to eliminate the need for external logic.
• Maintains TTL/CMOS compatible logic inputs across the full operating supply voltage range.
• Provides output swings that include the negative supply rail in both single and dual supply configurations.

Special Purpose Amplifiers Applications

• Multiple path timing deskew for Automatic Test Equipment (A.T.E.)
• Multichannel data acquisition systems
• Memory programmers
• Robotics and control systems

Special Purpose Amplifiers Procurement Notes

Verify the specific suffix 'FP' corresponds to the 16-pin Plastic DIP package variant. Confirm the operating temperature range requirements align with the -40°C to +85°C specification. Ensure power supply sequencing protocols are followed to prevent latchup, applying VDD before logic signals. Check for ESD sensitivity precautions during handling and installation.

Special Purpose Amplifiers Selection Notes

Select this component when a cost-effective solution for multiple set points or calibration cycles is required. It serves as a higher speed direct replacement for the SMP08. Consider its low cost and size reduction benefits over discrete designs. Evaluate its suitability for applications requiring amplifier offset or VCA gain adjustments using single or multiple DACs.

Special Purpose Amplifiers Part Context

The SMP18 belongs to the SMP18 family of monolithic octal sample-and-hold amplifiers. It is designed for systems utilizing calibration cycles to adjust multiple parameters. The device offers significant integration compared to discrete solutions, combining buffering, multiplexing, and holding functions into a single CMOS chip.

Special Purpose Amplifiers Replacement Considerations

SMP08

Special Purpose Amplifiers FAQ

What is the typical linearity error of the SMP18?

The SMP18 has a typical linearity error of only 0.01%.

Does the SMP18 require external logic for channel selection?

No, the SMP18 features an internal decoder and break-before-make switching, so no external logic is required.

What is the maximum droop rate specified for the device?

The maximum droop rate is 40 mV/s.