HMC668LP3 Datasheet, PDF (1/10 Pages) Hittite Microwave Corporation – GaAs PHEMT MMIC LNA w/ FAILSAFE BYPASS MODE, 700 - 1200 MHz

7
7-1
HMC668LP3 / 668LP3E
v03.0610
GaAs PHEMT MMIC LNA w/
FAILSAFE BYPASS MODE, 700 - 1200 MHz
Typical Applications
The HMC668LP3(E) is ideal for:
• Cellular/3G and LTE/WiMAX/4G
• BTS & Infrastructure
• Repeaters and Femtocells
• Tower Mounted Amplifiers
• Test & Measurement Equipment
Functional Diagram
Features
Noise Figure: 0.9 dB
Output IP3: +33 dBm
Gain: 16 dB
Failsafe Operation:
Bypass is enabled when LNA is unpowered
Single Supply: +3V or +5V
16 Lead 3x3mm QFN Package: 9 mm²
General Description
The HMC668LP3(E) is a versatile, high dynamic range
GaAs MMIC Low Noise Amplifier that integrates a low
loss LNA bypass mode on the IC. The amplifier is ide-
al for receivers and LNA modules operating between
0.7 and 1.2 GHz and provides 0.9 dB noise figure,
16 dB of gain and +33 dBm IP3 from a single supply
of +5V @ 57mA. Input and output return losses are
excellent and no external matching components are
required. A single control line is used to switch be-
tween LNA mode and a low loss bypass mode. The
failsafe topology enables the LNA bypass path, when
no DC power is available. The HMC668LP3(E) offers
improved noise figure versus the previously released
HMC373LP3(E).
Electrical Specifications, T_A = +25° C, Rbias = 0 Ohm
Parameter
LNA Mode
Vdd = +3V
Vdd = +5V
Bypass Mode
Failsafe Mode
Units
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
Frequency Range
0.7 - 1.2
0.7 - 1.2
0.7 - 1.2
0.7 - 1.2
GHz
Gain
12
15
13
16
-2.5 -1.5
Gain Variation Over Temperature
0.03
0.016
0.0008
Noise Figure
0.85 1.1
0.9
1.1
Input Return Loss
12
13
12
Output Return Loss
13
14
13
-2.5 -1.5
0.0008
12
13
dB
dB / °C
dB
dB
dB
Reverse Isolation
22
23
-
-
dB
Power for 1dB Compression
(P1dB)^[1]
Third Order Intercept (IP3)^[2]
Supply Current (Idd)
Switching Speed (90% -10%)
LNA Mode to Bypass Mode
Bypass Mode to LNA Mode
13
27
32
40
85
13
33
57
70
85
22
26
0.05
200
24
dBm
26
dBm
-
mA
-
ns
ns
[1] P1dB for LNA Mode is referenced to RFOUT while P1dB for Bypass and Failsafe Modes are referenced to RFIN.
[2] IP3 for LNA Mode is referenced to RFOUT while IP3 for Bypass and Failsafe Modes are referenced to RFIN.
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824
Phone: [phone] Fax: [phone] Order On-line at www.hittite.com
Application Support: Phone: [phone] or [e-mail]