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MAX2634
315MHz/433MHz Low-Noise Amplifier for Automotive RKE
Ultra-Low-Current Low-Noise Amplifier for RKE Solutions with Low-Noise Figure and Shutdown Mode
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Status
Active: In Production.
Description
The MAX2634 low-noise amplifier (LNA) with low-power shutdown mode is optimized for 315MHz and 433.92MHz automotive remote keyless entry (RKE) applications. At 315MHz, the LNA achieves 15.5dB power gain and a 1.25dB noise figure while only consuming 2.5mA of supply current from a 2.2V to 5.5V power supply. An integrated logic-controlled low-power shutdown mode reduces power consumption to 0.1µA and replaces the two transistors typically required to implement the shutdown function in discrete-based RKE LNA solutions. The device further reduces component count by integrating the output matching and DC-blocking components, and only requires a single inductor to match the input for best noise figure and input return loss.
The device is available in a small 6-pin (2.0mm x 2.2mm x 0.9mm) lead-free SC70 package for automotive applications that require visual inspection of PCB solder connections.
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Data Sheet
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Key Features
- Optimized for 308MHz, 315MHz, 418MHz, and 433.92MHz
- 2.2V to 5.5V Supply Voltage Range
- Low Operating Supply Current
- Logic-Controlled 1µA (max) Shutdown
- Typical Performance at 315MHz
- 1.25dB Noise Figure
- -16dBm Input IP3
- 15.5dB Power Gain
- Automotive Temperature Range
- ESD Rating of ±2.5kV (HBM) on All Pins
- AEC-Q100 Qualification
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Applications/Uses
- Garage Door Openers
- Remote Keyless Entry (RKE)
- Security
- Telemetry Receivers
- Tire Pressure Monitoring Systems (TPMS)
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Key Specifications:
| Low-Noise Amplifiers |
| Part Number |
RF Freq.
(MHz) |
RF Freq.
(MHz) |
Noise Figure
(dB) |
Gain
(dB) |
Input IP3
(dBm) |
ISUPPLY
(mA) |
Footprint
(mm x mm) |
Industry Qualified |
Package/Pins |
Budgetary Price |
| min |
max |
See Notes |
| MAX2634 |
100 |
1000 |
1.25 |
15.5 |
-16 |
2.5 |
2.0 x 2.2 |
| Automotive - AECQ100 | | Automotive - General |
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$0.67 @1k |
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See All Low-Noise Amplifiers (36)
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Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
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Diagram
Functional Diagram/Typical Operating Circuit
More Information
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Information Index
Document Ref.: 19-4383
Rev 1;
2009-03-11
This page last modified: 2009-07-08
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