SSM2212

Audio Dual Matched NPN Transistor
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Product Details

The SSM2212 is a dual NPN matched transistor pair specifically designed to meet the requirements of ultra-low noise audio systems.

With it's extremely low input base spreading resistance (rbb' is typically 28 Ω), and high current gain (hFE typically exceeds 600 @ lC = 1 mA), systems implementing the SSM2212 can achieve outstanding signal-to-noise ratios. This will result in superior performance compared to systems incorporating commercially available monolithic amplifiers.

Excellent matching of the current gain (ΔhfFE) to about 0.5% and low VOS of less than 50 μV (typical) make it ideal for symmetrically balanced designs, which reduce high order amplifier harmonic distortion.

Stability of the matching parameters is guaranteed by protection diodes across the base-emitter junction. These diodes prevent degradation of Beta and matching characteristics due to reverse biasing of the base-emitter junction.

The SSM2212 is also an ideal choice for accurate and reliable current biasing and mirroring circuits. Furthermore, since a current mirror's accuracy degrades exponentially with mismatches of VBE between transistor pairs, the low VOS of the SSM2212 will prelude offset trimming in most circuit applications. The SSM2212 performance and characteristics are guaranteed over the extended temperature range of -40ºC to 85ºC.

Product Lifecycle

checked Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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