NJM2520D

Audio Special Purpose Overview

The NJM2520D is a 2-input, 1-output audio switch manufactured by Nisshinbo Micro Devices Inc. (formerly New Japan Radio) in an 8-DIP package. It features two bias-type inputs and one buffer-type output, designed for analog audio signal routing. The device operates within a supply voltage range of +4.75V to +13V. Key electrical specifications include a typical input impedance of 58kΩ and a crosstalk rejection of -70dB. It utilizes bipolar technology and supports through-hole mounting with an operating temperature range of -20°C to +75°C.

Audio Special Purpose Feature Summary

• 2-input, 1-output configuration with bias-type inputs and buffer-type output
• Low crosstalk performance (-70dB typ.) and high input impedance (58kΩ typ.)
• Operates on a single supply voltage from +4.75V to +13V
• Bipolar technology construction

Audio Special Purpose Applications

• Audio system signal switching
• Multi-source audio selection

Audio Special Purpose Procurement Notes

Note that the NJM2520 series is generally considered obsolete or end-of-life. Verify current availability and lead times with distributors. Ensure the ordering suffix matches the required physical package (DIP8 for NJM2520D).

Audio Special Purpose Selection Notes

Select the NJM2520D when a simple 2-to-1 audio switch is required. Compare against the NJM2521 if a 1-input, 2-output configuration is needed instead. Ensure the application voltage stays within the +4.75V to +13V range.