MAX2634EVKIT Datasheet, PDF (1/8 Pages) Maxim Integrated Products – 315MHz/433MHz Low-Noise Amplifier for Automotive RKE

19-4383; Rev 1; 3/09
EVAALVUAAILTAIOBNLEKIT
315MHz/433MHz Low-Noise
Amplifier for Automotive RKE
General 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 con-
suming 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 compo-
nent 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 automo-
tive applications that require visual inspection of PCB
solder connections.
Applications
Remote Keyless Entry (RKE)
Tire Pressure Monitoring Systems (TPMS)
Security
Garage Door Openers
Telemetry Receivers
Features
o Optimized for 308MHz, 315MHz, 418MHz,
and 433.92MHz
o 2.2V to 5.5V Supply Voltage Range
o Low Operating Supply Current
2.5mA (typ), 4mA (max)
o Logic-Controlled 1µA (max) Shutdown
o Typical Performance at 315MHz
1.25dB Noise Figure
-16dBm Input IP3
15.5dB Power Gain
o Automotive Temperature Range
-40°C to +125°C
o ESD Rating of ±2.5kV (HBM) on All Pins
o AEC-Q100 Qualification
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX2634AXT+ -40°C to +125°C
6 SC70
+ADG
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configuration
TOP VIEW
GND
SHDN
GND
+
1
2
MAX2634
3
6 RFOUT
5
V_CC
4 RFIN
SC70
Functional Diagram/Typical Operating Circuit appears at
end of data sheet.
Performance Table
FREQUENCY
(MHz)
308
315
418
433.92
L1
(nH)
56
56
33
33
SUPPLY
CURRENT
(mA)
2.5
2.5
2.5
2.5
GAIN
(dB)
15.5
15.5
13.5
13.5
NOISE FIGURE
(dB)
1.25
1.25
1.25
1.25
INPUT P1dB
(dBm)
-29
-29
-26
-26
INPUT IP3
(dBm)
-16
-16
-12
-12
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.