0.5-4GHz Low Noise Amplifier

Transcription

1 ASL P3.5-4GHz Low Noise Amplifier Features Frequency Range:.5-4 GHz Better than 2.dB Noise Figure Single supply operation db Nominal Gain dbm Nominal P1dB Input Return Loss > db Output Return Loss > db DC decoupled Input and Output Nominal Bias : 3V@ 5mA.-um InGaAs phemt Technology QFN Plastic package: 3mm x 3mm x.8mm Functional Diagram Typical Applications Cellular system Base stations Narrow Band Applications from 8MHz to 4GHz Communication receivers and transmitters. Description The ASLP3 is a broadband MMIC LNA operating from.5-4ghz. The MMIC employs a single stage self-biased amplifier design featuring 5 Ohm input/output impedance. The amplifier operates on a single +3V supply. The LNA features db of nominal gain and has a typical midband noise figure of 1.8 db. The Amplifier can also be operated at 2V for lower current operation and at 4V for a higher power output requirement. The LNA features midband input/output return loss of db and a nominal P1dB of dbm. In addition to being used as the first stage, the LNA s excellent linearity encourages its usage in the succeeding stages of a receiver chain. To minimize board area the design is offered in a low profile (3mm x 3mm) QFN package. Page 1 of 8

2 ASL P3 Absolute Maximum Ratings (1) Parameter Absolute Maximum Units Positive DC Supply 6 V RF Input Power 2 dbm Supply current ma Operating Temperature 5 to +85 Storage Temperature -65 to + 1. Operation beyond these limits may cause permanent damage to the component o C o C Electrical Specifications T A = 25 o C, V d = +3V, Z o =5 Parameter Min. Typ. Max. Units Frequency.5-4 GHz Gain - - db Gain Flatness - ±1.5 - db Noise Figure(max) db Input Return Loss - db Output Return Loss - db Output Power (P1dB) - dbm Output Third Order Intercept(IP3) dbm Supply Current ma Note: 1. Electrical specifications as measured in test fixture. Page 2 of 8

3 P1dB(dBm) Return loss(db) Isolation(dB) Gain(dB) NF(dB) ASL P3 Test fixture data Vd= 3V, Total Current = 5mA, T A = 25 o C Gain Noise Figure I/O Return loss Reverse Isolation S22 S P1dB Vs Frequency Page 3 of 8

4 P1dB(dBm) Return loss(db) Isolation(dB) Gain(dB) NF(dB) ASL P3 Test fixture data Vd= 2V, Total Current = 45 ma, T A = 25 o C Gain Noise Figure I/O Return loss Reverse Isolation S S P1dB Vs Frequency Page 4 of 8

5 P1dB(dBm) Return loss(db) Isolation(dB) Gain(dB) NF(dB) ASL P3 Test fixture data Vd = 4V, Total Current =55 ma, T A = 25 o C Gain Noise Figure I/O Return loss Reverse Isolation S S P1dB Vs Frequency Page 5 of 8

6 ASL P3 Pin Configuration Pin Designations Symbol Pin No. Description GND 1,2,4,5,8,9,-16 Ground RF In 3 RF Input Vd 6,7 Drain Voltage Input RF Out RF output Page 6 of 8

7 ASL P3 Test Board Pattern QFN mounted on test pattern List of components Component value Part No. L1 68nH Any standard Air core inductor or equivalent L2 nh hand-wound part R Ω 63/42 chip resistor C1 5.1pF ATC(6REA5R1MTT) or equivalent C2 47pF ATC(6UK471MTT) or equivalent C3.1µF 63/42 chip capacitor Note: 1. Input and output 5 ohm lines are on mil RT duroid substrate 2..1 µf capacitors may be additionally used as a second level of bypass for reliable operation 3. All capacitors shown in the assembly diagram (except.1µf) are single layer capacitors. The use of Multilayer capacitors and inductors with smaller footprint (42) is suggested only for frequencies < 2. GHz. Page 7 of 8

8 ASL P3 Package Outline All units are in millimeters Page 8 of 8