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Description
The UM9552 is a PIN DIODE designed for low HF or LF Band Attenuator Applications. It has a very long minority carrier lifetime (70 ms typical) and has been evaluated for attenuator linearity and distortion characteristics in a Bridge Tee Attenuator Circuit at 455 KHz. When used as the two variable resistors in the Bridged Tee Circuit, the Third Order Intermodulation Products are below -60 dBc with 0 dBm input power over an attenuation range of 4 dB to 30 dB. These diodes exhibit a more linear forward biased resistance (RS) vs forward bias current (If) relationship, simplifying the design of the driver circuits that supply the bias currents over the specified attenuation range. The low attenuation range can be compensated by commercially available, inexpensive 4 to 6 dB gain blocks.
Specifications and features
● Low Frequency Attenuator
● HF/LF Band Operation
● Long Lifetime (70 ms typ.)
● Very Low Distortion (IP3 @ 455 KHz = < 60 dBm)Application Scenarios
This model is suitable for low HF or LF Band Attenuator Applications. It can be used in Bridge Tee Attenuator Circuits at 455 KHz, which is the common intermediate frequency for AM transmitters and receivers.
Comparison
Advantages- Very long minority carrier lifetime
- Low distortion characteristics
- Simplified design of driver circuitsDisadvantages- May require additional gain blocks in low attenuation range applications
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Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
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Popular parts of the same kind
- Datasheet: Download UM9559E
- Chipdatas Part: CD94-UM9559E
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/03 11:38 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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