User's Guide

Operation

Operation

This section describes the operating theory of the selector.

Agilent 4155/4156 can control the selector to automatically switch the unit (SMU or PGU) that is connected to a DUT pin according to the state (stress force state or measurement state).

This is useful for performing reliability testing (stress testing) of DUTs. For example, the selector can connect a PGU to the DUT for forcing ac stress, then can switch and connect an SMU for measuring dc characteristics.

You define the selector connections in SMU/PG SELECTOR table on the STRESS: CHANNEL DEFINITION page. The switching state specified in the STRESS column is automatically performed during stressing. The switching state specified in the MEASURE column is automatically performed during measurement. See "STRESS: CHANNEL DEFINITION screen" in the 4155/4156 User's Guide.

For example, you can specify to connect the PGU to the DUT during stress, and connect the SMU to the DUT during measurement. So, when you press the Stress key, the PGU is automatically connected to the DUT. And when you press a measurement key, the SMU is automatically connected to the DUT.

The 4155/4156 controls the switching of the selector.

Each selector has two channels. If you want to add two more channels for a total of four, you can order 16440A option 003, which is called the "selector expander".

The selector and selector expander have identical circuits. The only difference is the channel naming. The selector has CH 1 and CH 2, and the selector expander has CH 3 and CH 4.

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Agilent 16440A User’s Guide, Edition 4

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Agilent Technologies 16440A SMU manual Operation, 4155/4156 controls the switching of the selector
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16440A SMU specifications

Agilent Technologies, now known as Keysight Technologies, offers a range of precision instruments designed for various applications in electronics testing and analysis. One of the standout products in their portfolio is the Agilent 16440A Source Measure Unit (SMU). The Agilent 16440A is tailored for both automated and manual measurements across a broad range of electrical components and systems in research and development, production, and quality assurance.

The Agilent 16440A SMU is a versatile instrument that combines sourcing and measurement capabilities in a single device. This integration allows users to perform tasks such as IV characterization, device testing, and functional testing of semiconductor devices and other electronic components. It can generate precise voltage and current levels while simultaneously measuring the resulting current and voltage, making it ideal for tasks that require high accuracy and reliability.

One of the key features of the Agilent 16440A is its ability to source and measure with high resolution. With a resolution of up to 1 microamp for current and 1 millivolt for voltage, it is well-suited for measuring small signals in highly sensitive devices. Additionally, the SMU includes a wide dynamic range, allowing it to operate effectively across various types of devices, from microelectronic components to larger power devices.

The Agilent 16440A is built on advanced measurement technology that ensures low noise and minimal drift, essential for accurate readings, particularly in precision applications. The unit incorporates a built-in data logging function, enabling users to capture data over time for further analysis. This feature is particularly useful for long-term tests and reliability assessments.

Moreover, the instrument supports a variety of communication interfaces, including USB, GPIB, and Ethernet, facilitating easy integration into automated test systems and enhancing its versatility in different testing environments. Its user-friendly interface ensures that both novice and experienced engineers can operate the SMU efficiently.

In conclusion, the Agilent 16440A SMU stands out for its precision, versatility, and advanced measurement technologies. With features that cater to a wide array of applications, it is an invaluable tool for engineers involved in the testing and characterization of electronic devices. Whether in a laboratory setting or on the production floor, the 16440A delivers reliable performance that meets the demanding needs of modern electronics testing.
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