MICRF300YC6 Datasheet, PDF (1/8 Pages) Micrel Semiconductor – 100MHz to 1000MHz, 1.8 to 3.6V, Low-Noise Amplifier with Shutdown

MICRF300
100MHz to 1000MHz, 1.8 to 3.6V,
Low-Noise Amplifier with Shutdown
General Description
The MICRF300 is a low-noise amplifier (LNA) with low-
power shutdown mode, which operates over the
100MHz to 1000MHz frequency band. The device is
targeted for low-power, low-data rate applications at
315/433MHz, achieving a low 1.2dB noise figure with
18dB of gain, helping to improve receiver noise figure
and sensitivity. The device also performs well at
868/915MHz, achieving 13dB of gain and a noise figure
of 1.7dB. The device requires a simple input matching
network and output matching network to optimize
performance for the desired frequency band.
The MICRF300 operates over the 1.8V to 3.6V voltage
range. Consuming a low 2.5mA of supply current during
operation and a typical 50nA of shutdown current, the
MICRF300 is an ideal solution for battery powered
equipment. The device is available in 6-pin SC70
package and is rated to operate over the -40˚C to
+125˚C temperature range.
Typical Application Circuit
Features
• 1.8V to 3.6V supply voltage range
• 2.5mA operating supply current
• 1μA (Max) shutdown current over temperature
• 18.3dB gain at 315MHz/433.92MHz
• 1.15dB noise figure at 315MHz/433.92MHz
• -25dBm input P_1dB compression point at 433.92MHz
• -40˚C to +125˚C operating temperature range
• Small 6-pin SC70 package
Applications
• Security systems
• Remote keyless entry (RKE)
• Tire pressure monitoring (TPMS)
• Automated meter reading (AMR)
• Garage door openers (GDO)
• Remote weatherstations
Typical Performance and Matching Component Values
f_RF
I_CC
Gain
NF
IP1dB
IIP3
L1
C1
L2
C2
(MHz)
(mA)
(dB)
(dB)
(dBm)
(dBm)
(nH)
(pF)
(nH)
(pF)
315
2.5
18.5
1.15
-26.5
-15
33
1000
47
5.6
433.92
2.5
18.3
1.15
-25
-13
22
1000
33
3.9
900
2.5
13.6
1.7
-21
-10
2.7
270
10
1.8
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel [phone] • fax + 1 [phone] • http://www.micrel.com
April 2012
M9999-041712-B
[e-mail] or [phone]