RFMD RF2365PCBA

RF2365
4
3V LOW NOISE AMPLIFIER
Typical Applications
• DCS GSM
• 2.4GHz Systems
• PCS CDMA
• General Purpose Amplification
• PCS TDMA
• Commercial and Consumer Systems
Product Description
4
0.15
0.05
GENERAL PURPOSE
AMPLIFIERS
The RF2365 is a low noise amplifier with a high dynamic
range designed for the receive front end of digital cellular
applications at PCS/DCS frequencies. It is designed to
amplify low level signals with minimum noise contribution
while operating in the harsh, interference-rich environments of newly deployed digital subscriber units. The part
provides excellent performance as a LNA for 2.4GHz
radio applications. The IC is featured in a standard
SOT5-lead plastic package.
1.60
+ 0.01
0.400
1
2.90
+ 0.10
0.950
2.80
+ 0.20
3° MAX
0° MIN
1.44
1.04
Dimensions in mm.
0.127
0.45
+ 0.10
Optimum Technology Matching® Applied
!
Si BJT
Si Bi-CMOS
GaAs HBT
GaAs MESFET
SiGe HBT
Si CMOS
Package Style: SOT 5-Lead
Features
• 1.6dB Noise Figure @ 1850MHz
• 1.75dB Noise Figure @ 2450MHz
• 18.0dB Gain at PCS/DCS
RF IN
1
GND1
2
PD
3
5
RF OUT
• 15.5dB Gain at 2.45GHz
• External Bias Control
• Extremely Small SOT23-5 Package
4
GND2
Ordering Information
RF2365
RF2365 PCBA
Functional Block Diagram
Rev A4 001201
3V Low Noise Amplifier
Fully Assembled Evaluation Board
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
4-215
RF2365
Absolute Maximum Ratings
Parameter
Supply Voltage
Input RF Level
Operating Ambient Temperature
Storage Temperature
Parameter
Rating
Unit
-0.5 to +8.0
+10
-40 to +85
-40 to +150
VDC
dBm
°C
°C
Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate
at the time of this printing. However, RF Micro Devices reserves the right to
make changes to its products without notice. RF Micro Devices does not
assume responsibility for the use of the described product(s).
Specification
Min.
Typ.
Max.
Unit
1500
MHz
Condition
RF Frequency Range
GENERAL PURPOSE
AMPLIFIERS
Overall
4
PCS Performance
Gain
16
Noise Figure
Off Mode Gain
|S12|
Input IP3
Output IP3
20.0
Input VSWR
Output VSWR
2500
18
20
dB
1.6
-15
25
-3.5
dB
dB
dB
dBm
+2.0
dBm
+4.0
dBm
22.0
28.0
dBm
Gain
Noise Figure
Input IP3
Input VSWR
Output VSWR
15.5
1.75
+2.0
1.3
1.75
dB
dB
dBm
3
8.0
6.5
5.0
V
mA
mA
mA
µA
Power Supply
Power Down
4-216
VCC =3.0V, VPD =0
VCC =3.0V, ICC =5.0mA, R1 =150 Ω (see
application schematic)
VCC =3.0V, ICC =6.5mA, R1 =75Ω (see application schematic)
VCC =3.0V, ICC =8.0mA, R1 =0 Ω (see application schematic)
VCC =3.0V, ICC =8.0mA, R1 =0 Ω (see application schematic)
1.7
1.4
2.4GHz Performance
Voltage (VCC)
Current Consumption
Schematic per 1.9GHz LNA Application
Schematic, VPD = 3.0 VCC = 3.0V,
T=25°C
VCC =3.0V, ICC =8.0mA
Schematic per 2.4GHz LNA Application
Schematic
T=25°C
VCC =3.0V, ICC =8.0mA
VCC =3.0V, ICC =8.0mA
T = 25 °C
5.0
0
11.0
1
VCC =3.0V, IIP3=+4.0dBm
VCC =3.0V, IIP3=+2.0dBm
VCC =3.0V, IIP3=-3.5dBm
VCC =3.0V; VPD ≤0.9V
Rev A4 001201
RF2365
Pin
1
Function
RF IN
Description
Interface Schematic
RF input pin. This pin is DC coupled.
PD
To Bias
Circuit
RF IN
GND1
GND1
PD
4
5
GND2
RF OUT
Power down pin. This pin serves as the interstage for the 2-stage LNA.
An inductor is required to pull pin 3 to VCC (see application schematic).
If desired, this voltage can be lowered to trade off IP3 versus ICC,TOTAL.
(See table below.)
To RF
Stages
4
Ground connection. See evaluation board schematic notes.
Amplifier Output pin. This pin is an open-collector output. It must be
biased to either VCC or pin 4 through a choke or matching inductor.
This pin is typically matched to 50Ω with a shunt bias/matching inductor and series blocking/matching capacitor. Refer to application schematics.
R1
IIP3
0Ω
75Ω
150Ω
+4.0dBm
+2.0dBm
-3.5dBm
Rev A4 001201
PD
GENERAL PURPOSE
AMPLIFIERS
2
3
Ground connection. See evaluation board schematic notes.
To Bias
Circuit
GND2
ICC
8.0mA
6.5mA
5.0mA
4-217
RF2365
Application Schematic - 1.9GHz
47 pF
VCC
3.9 nH
RF IN
1
5
RF OUT
22 nF
1 pF
4
GENERAL PURPOSE
AMPLIFIERS
2
0Ω
3.3 nH
EN
3
4
47 pF
Application Schematic - 2.4GHz
NOTES:
* R1 is left open.
22 pF
VCC
3.9 nH
RF IN
1
5
22 nF
RF OUT
1.5 pF
2
2.2 nH
EN
3
4
22 pF
R1*
4-218
Rev A4 001201
RF2365
Evaluation Board Schematic - 1.9GHz
(Download Bill of Materials from www.rfmd.com.)
P2
P1
P 1 -2
1
GND
2
VCC
P 2 -2
1
GND
2
EN
C2
47 pF
C3
10 nF
VCC
C1
22 nF
1
L2
3 .9 n H
5 0 Ω µstrip
5
C4
1 pF
*
2
4
L1
3 .3 n H
R1
0Ω
EN
3
C6
10 nF
J2
RF OUT
GENERAL PURPOSE
AMPLIFIERS
5 0 Ω µstrip
J1
R F IN
2365400, Rev A
*
4
C5
47 pF
NOTES:
*G ro u n d tra ce s o n p in s 2 a n d 4 a re e q u iva le n t to a 1 .8 n H
in d u cto r. If a n in d u cto r is n o t u se d , th e d im e n sio n s a re a s fo llo w s:
L e n g th = 1 4 0 m ils
W id th = 2 0 m ils
H e ig h t = 3 1 m ils fro m th e g o u n d p la n e . D ie le ctric is F R -4 .
Evaluation Board Schematic - 2.4GHz
P2
P1
P 1-2
1
GND
2
VCC
P 2-2
1
GND
2
EN
C2
22 pF
C3
10 nF
VCC
50 Ω µstrip
J1
R F IN
2 36 54 01 , R e v -
C1
22 nF
1
L2
3.9 nH
50 Ω µstrip
5
C4
1.5 pF
**
J2
RF O UT
2
L1
2.2 nH
EN
3
C6
10 nF
C5
22 pF
4
R 1*
N OTES:
* R 1 is left o p en .
**G ro u nd trace o n p in 2 is e qu iva le nt to a 1.0 n H in d ucto r. If a n
in du ctor is n ot u se d, th e dim e nsio ns a re a s fo llo w s:
L en g th = 8 5 m ils
W idth = 2 0 m ils
H eig ht = 3 1 m ils from th e go u nd p la n e. D ie le ctric is F R -4 .
Rev A4 001201
4-219
RF2365
Evaluation Board Layout
Board Size 1” x 1”
1.9GHz
Board Thickness 0.031”; Board Material FR-4
GENERAL PURPOSE
AMPLIFIERS
4
2.4GHz
4-220
Rev A4 001201
RF2365
Gain versus Frequency and VCC
(Temp = +25°C, RF IN = -36 dBm)
18.80
18.60
19.20
Gain versus Frequency and Temp
(VCC = 2.8 V, RF IN = -35 dBm)
Gain, 2.8V
19.00
Gain, -40°C
Gain, 3.0V
18.80
Gain, +25°C
Gain, 3.2V
18.60
Gain, +85°C
18.40
18.40
18.20
18.20
Gain (dB)
17.80
17.60
17.80
17.60
17.40
17.20
17.00
17.40
4
16.80
17.20
16.60
16.40
17.00
16.20
16.80
16.00
1805.00
1823.75
1842.50
1861.25
1880.00
1805.00
1823.75
-2.20
-2.40
-2.60
-2.80
-3.00
-3.20
-3.40
-3.60
-3.80
-4.00
-4.20
-4.40
-4.60
-4.80
-5.00
-5.20
-5.40
-5.60
-5.80
-6.00
-6.20
-6.40
-6.60
-6.80
-7.00
-7.20
Input P1dB versus Frequency and VCC
(Temp = +25°C)
IP1dB, 2.8V
IP1dB, 3.0V
IP1dB, 3.2V
1805.00
1823.75
1842.50
7.00
1861.25
1880.00
-2.80
-3.00
-3.20
-3.40
-3.60
-3.80
-4.00
-4.20
-4.40
-4.60
-4.80
-5.00
-5.20
-5.40
-5.60
-5.80
-6.00
-6.20
-6.40
-6.60
-6.80
-7.00
-7.20
-7.40
-7.60
-7.80
-8.00
1805.00
IIP3 versus Frequency and VCC
(Temp = +25°C)
IIP3, 2.8V
IIP3, 3.2V
6.00
5.50
IIP3 (dBm)
IIP3 (dBm)
5.00
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
1805.00
1823.75
1842.50
Frequency (MHz)
Rev A4 001201
1880.00
IP1dB, -40°C
IP1dB, +25°C
IP1dB, +85°C
1823.75
1842.50
1861.25
1880.00
Frequency (MHz)
IIP3, 3.0V
6.50
1861.25
Input P1dB versus Frequency and Temp
(VCC = 2.8 V)
Frequency (MHz)
7.50
1842.50
Frequency (MHz)
Input P1dB (dBm)
Input P1dB (dBm)
Frequency (MHz)
1861.25
1880.00
6.00
5.50
5.00
4.50
4.00
3.50
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
-1.00
-1.50
-2.00
-2.50
-3.00
-3.50
-4.00
-4.50
1805.00
IIP3 versus Frequency and Temp
(VCC = 2.8 V)
IIP3, -40°C
IIP3, +25°C
IIP3, +85°C
1823.75
1842.50
1861.25
1880.00
Frequency (MHz)
4-221
GENERAL PURPOSE
AMPLIFIERS
Gain (dB)
18.00
18.00
RF2365
ICC versus VCC and Temp
10.00
Noise Figure versus Frequency and VCC
(Temp = Ambient)
1.34
10.50
NF, 2.8V
Icc, -40°C
NF, 3.0V
Icc, +25°C
9.50
1.33
Icc, +85°C
NF, 3.2V
9.00
8.00
7.50
7.00
6.50
4
1.32
Noise Figure (dB)
ICC (mA)
8.50
1.31
1.30
6.00
1.29
GENERAL PURPOSE
AMPLIFIERS
5.50
5.00
4.50
1.28
2.80
3.00
1805.00
3.20
1823.75
1842.50
1861.25
1880.00
Frequency (MHz)
VCC
Swp Max
3.5GHz
2.
0
0.6
0.8
1.0
Input/Output Impedance @ 2.8 V
4
0.
3.0
4.0
5.0
0.2
10.0
5.0
4.0
3.0
2.0
1.0
0.8
0.6
0.4
0
0.2
10.0
S[2,2]
S[1,1]
-10.0
-0.2
-5.0
0
-4.
.0
-3
.4
4-222
-1.0
-0.8
-0.
6
.0
-2
-0
Swp Min
0.1GHz
Rev A4 001201