Picotest
Picotest J2101A Breitband-Injektionstransformator
Picotest J2101A Breitband-Injektionstransformator
SKU: J2101A
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Key Features
Overview
Overview
The Picotest J2101A Wideband Injection Transformer (SKU: J2101A) enables safe and precise injection of test signals into the control loops of DC-DC converters and power supply systems, making it invaluable for stability, gain, and phase margin measurements. Spanning a frequency range from 10Hz to 45MHz and supporting off-line power supplies, the J2101A suits both low- and high-frequency power integrity testing scenarios.
Application
Primarily used for Bode plot and loop response analysis, the J2101A provides a low-distortion, galvanically isolated signal path between a network analyzer and the device under test. Its 1:1 ratio, 600V isolation voltage, and robust 5 Ohm termination assure compatibility with most analyzers and power electronics, including power factor correctors (PFCs), switching regulators, and LDOs.
Product Range
The J2101A forms part of Picotest’s comprehensive injector family. Consider the J2100A for ultra-low frequency needs, or the J2110A Solid State Injector for DC to 45MHz bandwidth with ultra-low noise and higher precision.
Why Choose J2101A?
Its unmatched balance of wide bandwidth, robust isolation, and low distortion ensures reliable performance and minimal impact on the circuit. Engineers who require accurate, repeatable measurement of control loop stability in modern high-speed designs consistently value the J2101A.
Downloads
Why Engineers Choose the Picotest J2101A Breitband-Injektionstransformator
Precision Stability Analysis
Versatile Frequency Coverage
Safety and Ease of Use
Der Picotest J2101A wird verwendet, um ein Signal einzuspeisen, normalerweise in eine Regelschleife, um die Stabilität von DC-DC-Wandlern zu messen. Er wurde mit einer Bandbreite von 10 Hz bis 45 MHz entwickelt und wird häufig mit einem Vektornetzwerkanalysator verwendet.
Picotest bietet zwei verschiedene Injektionstransformatoren an, die speziell für unterschiedliche Anwendungen optimiert sind. Beide sind aus Materialien gefertigt, die den meisten anderen Injektionstransformatoren überlegen sind, was zu einer deutlich verbesserten Bandbreite, Haltbarkeit und Gesamtleistung führt. Die nutzbare Bandbreite der Picotest-Injektionstransformatoren ist größer als die 3-dB-Frequenzgrenzen.
Questions and Answers
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Is the J2101A Compatible with All Network Analyzers?
Not all, but it works with most mainstream network analysers.
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What’s the Benefit of 1:1 Transformer Ratio?
A 1:1 ratio means the transformer itself neither steps the signal up nor down. The 5 Ω termination then attenuates the injected signal to keep the measurement small-signal.
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Are There Solid-state Options in the Picotest Range?
Yes. The J2110A Solid State Injector gives DC to 45MHz bandwidth.
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What Is the Maximum DC Current Rating?
The J2101A supports up to 10mA DC current before inductance drops 10%.
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What’s the Recommended Alternative for Ultra-low Frequency Injection?
The Picotest J2100A is suited for frequencies as low as 1Hz.
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What Is the Frequency Range of the Picotest J2101A Injection Transformer?
The J2101A operates from 10Hz to 45MHz, supporting a broad range for DC-DC converter and regulator measurements.
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Can the J2101A Be Used for Offline Power Supply Stability Testing?
Yes. With 600V isolation, it suits high-voltage and offline PSU applications.
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What Terminations Are Recommended for the J2101A?
The transformer uses a 5 Ω termination, which Picotest specifies as optimal for the 50 Ω source impedance of most standard analysers.
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How Does the J2101A Compare to Picotest’s J2100A?
The J2100A covers lower frequencies down to 1Hz; the J2101A spans higher frequencies up to 45MHz for faster regulators.
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Can the J2101A Be Left Permanently In-circuit?
Generally, yes. Its low termination value means it can usually stay in-circuit without appreciably affecting the output voltage.
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