SMP08FP

Special Purpose Amplifiers Overview

The SMP08FP is a monolithic octal sample-and-hold amplifier manufactured by Analog Devices Inc. in an advanced oxide isolated CMOS technology, housed in a 16-pin Plastic DIP (N-16) package. It integrates eight internal buffer amplifiers, an input multiplexer, and internal hold capacitors. The device supports single or dual supply operation with a voltage range of 7V to 15V. Key electrical characteristics include a typical linearity error of 0.01%, a maximum acquisition time of 7µs for ±3V signals, and a typical droop rate of 2mV/s. It features TTL/CMOS compatible logic inputs and break-before-make channel addressing.

Special Purpose Amplifiers Feature Summary

• Integrates eight internal buffer amplifiers, an input multiplexer, and internal hold capacitors within a single monolithic CMOS structure.
• Features break-before-make switching capability and an internal decoder, eliminating the need for external logic components.
• Maintains compatibility with TTL and CMOS logic levels across the full operating supply voltage range via an internally regulated TTL supply.
• Provides output buffers capable of driving capacitive loads up to 500pF without stability issues.

Special Purpose Amplifiers Applications

• Multiple path timing deskew for Automatic Test Equipment (ATE)
• Multichannel data acquisition systems
• Memory programmers
• Mass flow and process control systems

Special Purpose Amplifiers Procurement Notes

Verify the specific suffix 'FP' corresponds to the 16-pin Plastic DIP package when ordering. Confirm that the required operating temperature range aligns with the -40°C to +85°C specification. Ensure power supply sequencing guidelines are followed during integration to prevent latchup. Check for ESD sensitivity precautions during handling and assembly processes.

Special Purpose Amplifiers Selection Notes

Select this component for applications requiring cost-effective multiplexing of multiple analog channels using a single sample-and-hold architecture. It is suitable for systems where board space is limited but high accuracy is maintained through low droop rates. Consider the 7µs acquisition time constraint when designing for high-speed signal paths. Evaluate the single-supply versus dual-supply configuration based on the system's ground noise environment.

Special Purpose Amplifiers Part Context

The SMP08 belongs to the SMP08 family of octal sample-and-hold amplifiers from Analog Devices. This series is designed to minimize board space in systems requiring cycled calibration or arrays of control voltages. It serves as a demultiplexing solution when used with digital-to-analog converters, offering a cost-effective alternative to using multiple individual DACs as channel counts increase.

Special Purpose Amplifiers Replacement Considerations

SMP08FS: Same functional specifications but packaged in SO-16 surface mount format.

Special Purpose Amplifiers FAQ

How does the SMP08 handle channel switching?

The SMP08 utilizes break-before-make channel addressing with an internal decoder, ensuring that one channel is fully disconnected before the next is connected, which prevents signal overlap without requiring external logic.

What is the impact of ground noise on single-supply operation?

In single-supply applications, the VSS pin must be connected to a clean ground because the internal hold capacitors are tied to this rail; any ground noise will directly couple to the output and degrade signal-to-noise performance.