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MAX2634AXT+T SC-70-6
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315MHz/433MHz Low-Noise Amplifier for Automotive RKE; Package: SC70;6 pin;5 mm² ; Temperature: -40°C to +125°C

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Maxim Integrated
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RF Amplifiers
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MAX2634AXT+T Product Details

The MAX2634AXT+T is a 315MHz/433MHz ultra low current low noise amplifier (LNA) for RKE solutions with low noise figure and shutdown mode in 6 pin SC-70 package. It is optimized for 315MHz and 433.92MHz automotive remote keyless entry (RKE) applications. At 315MHz, the LNA achieves 15.5dB power gain and 1.25dB noise figure at TA = +25°C while only consuming 2.5mA of supply current from 2.2V to 5.5V power supply. An integrated logic controlled low power shutdown mode reduces power consumption to 0.1µA and replaces two transistors typically required to implement the shutdown function in discrete based RKE LNA solutions. The device further reduces component count by integrating output matching and DC blocking components. It requires a single inductor to match input for best noise figure and input return loss. The MAX2634 is used in tire pressure monitoring systems (TPMS), garage door openers and telemetry receivers.


  • Optimized for 308MHz, 315MHz, 418MHz and 433.92MHz
  • Automotive temperature range from -40°C to 125°C
  • Logic controlled 1µA maximum shutdown current
  • Input third order intercept point of -16dBm (fRFIN = 315MHz) and -12dBm (fRFIN = 433.92MHz)
  • ESD rating of ±2KV (HBM) on all pins
  • Input 1dB compression point of -29dBm (fRFIN = 315MHz) and -26dBm (fRFIN = 433.92MHz)
  • Input return loss of 10dB (fRFIN = 315MHz) and 11dB (fRFIN = 433.92MHz)
  • Output return loss of 8dB (fRFIN = 315MHz) and 8dB (fRFIN = 433.92MHz)

MAX2634AXT+T Block Diagram
(Picture: Diagram)

Technical Parameters

Type Low Noise Amplifier Test Frequency 315 MHz
Operating Frequency 315 MHz to 433 MHz Maximum Operating Temperature + 125 C
P1dB - 29 dBm Mounting Style SMD/SMT
Output Intercept Point - 16 dBm Package / Case SOT-70-6
Power Gain Typ 15.5 dB Packaging Reel
Noise Figure 1.25 dB Maximum Power Dissipation 245 mW
Operating Supply Voltage 3 V Minimum Operating Temperature - 40 C
Supply Current 2.5 mA Series MAX2634

MAX2634AXT+T Documents

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Maxim Integrated Products is a global range of linearity, mixed-signal integrated circuits (IC) design, R & D and manufacturing leader, has designed, developed, and manufactured analog, mixed-signal,...
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