RFMD RF2878PCBA-L

RF2878
RF28783 V
Low Noise
Amplifier/ 3V
PA Driver
Amplifier
3V LOW NOISE AMPLIFIER/
3V PA DRIVER AMPLIFIER
RoHS Compliant & Pb-Free Product
Package Style: SOT 5-Lead
Features
„
„
„
„
„
„
Low Noise and High Intercept
Point
Adjustable Bias Current
Power Down Control
Single 2.5V to 6.0V Power
Supply
150MHz to 2500MHz Operation
Extremely Small SOT 5-Lead
Package
RF IN
1
GND1
2
VPD
3
Applications
„
„
„
„
TDMA/CDMA/FM Cellular
PCS LNA
Low Noise Transmit Driver
Amplifier
General Purpose Amplification
Commercial and Consumer
Systems
5
GND2
4
RF OUT
Functional Block Diagram
Product Description
The RF2878 is a low noise amplifier with a very high dynamic range designed for
digital cellular applications. The device functions as an outstanding front end low
noise amplifier or power amplifier driver amplifier in the transmit chain of digital
subscriber units where low transmit noise power is a concern. When used as an
LNA, the bias current can be set externally. When used as a PA driver, the IC can
operate directly from a single cell Li-ion battery and includes a power down feature
that can be used to completely turn off the device. The IC is featured in a standard
SOT 5-lead plastic package.
NOTE: The RF2878 is a Pb-free product. If a non-Pb-free product with the same
functionality and package is desired, please see the RF2361.
Ordering Information
RF2878
RF2878 PCBA-D
RF2878 PCBA-L
9GaAs HBT
GaAs MESFET
InGaP HBT
3V Low Noise Amplifier/ 3V PA Driver Amplifier
Fully Assembled Evaluation Board (Driver)
Fully Assembled Evaluation Board (LNA)
Optimum Technology Matching® Applied
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
Rev A0 DS060206
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
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RF2878
Absolute Maximum Ratings
Parameter
Supply Voltage, VCC
Rating
Unit
-0.5 to +8.0
VDC
Power Down Voltage, VPD
<VCC
VDC
Input RF Level
+10
dBm
Operating Ambient Temperature
-40 to +85
°C
Storage Temperature
-40 to +150
°C
Parameter
Min.
Specification
Typ.
Max.
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Absolute Maximum Rating conditions is not implied.
RoHS status based on EUDirective2002/95/EC (at time of this document revision).
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice.
Unit
Condition
Overall
RF Frequency Range
150 to 2500
MHz
Schematic per LNA Application;
T=25°C, RF=881MHz, VPD =2.8V,
R1=1kΩ
Low Noise Amplifier
881MHz Performance
Gain
19.5
19.5
Noise Figure
Input IP3
20
20
1.4
1.6
1.4
1.6
dB
VCC =3.0V, ICC =7.6mA
dB
VCC =2.7V, ICC =7.5mA
dB
VCC =3.0V, ICC =7.6mA
dB
VCC =2.7V, ICC =7.5mA
+6.0
dBm
VCC =3.0V, ICC =7.6mA
+5.5
dBm
VCC =2.7V, ICC =7.5mA
Low Noise Amplifier
1950MHz Performance
Gain
Schematic per LNA Application;
T=25°C, RF=1950MHz, VPD =2.8V, R1=1kΩ
12.5
13
dB
VCC =3.0V, ICC =6.4mA
12.5
13
dB
VCC =2.7V, ICC =6.3mA
Noise Figure
Input IP3
1.3
1.5
dB
VCC =3.0V, ICC =6.4mA
1.3
1.5
dB
VCC =2.7V, ICC =6.3mA
+16.5
dBm
VCC =3.0V, ICC =6.4mA
+16.0
dBm
VCC =2.7V, ICC =6.3mA
Driver Amplifier
836MHz Performance
Gain
Output IP3
Schematic per Driver Amplifier Application;
T=25°C, RF=836MHz, VPD =2.8V
19.5
20.5
21.5
dB
VCC =3.5V
19.5
20.5
21.5
dB
VCC =3.0V
19.5
20.5
21.5
dB
VCC =2.7V
+32.0
35
25
+29.0
+27.8
Noise Figure
Reverse Isolation
2 of 14
dBm
VCC =3.5V
dBm
VCC =3.0V
dBm
VCC =2.7V
1.9
2.0
dB
VCC =3.5V
1.85
2.0
dB
VCC =3.0V
1.8
2.0
dB
VCC =2.7V
25
dB
VCC =3.5V
25
dB
VCC =3.0V
25
dB
VCC =2.7V
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev A0 DS060206
RF2878
Parameter
Min.
Specification
Typ.
Max.
Unit
Driver Amplifier
836MHz Performance,, cont.
Schematic per Driver Amplifier Application;
T=25°C, RF=836MHz, VPD =2.8V
Input VSWR
1.8:1
2.0:1
Output VSWR
1.25:1
2.0:1
P1dB
Condition
Using External LC network used on evaluation
board.
13
14.4
dBm
12
12.5
dBm
VCC =3.0V
10.5
11.5
dBm
VCC =2.7V
2.5 to 6.0
V
Power Supply
VCC =3.5V
T = 25 °C
Voltage (VCC)
Voltage (VPD)
2.7
2.8
2.9
V
Current Consumption Driver Amplifier
12.5
21.5
27
mA
VCC =3.5V; VPD =2.8V; VPD +VCC - Current
Consumption from VPD is 2.0mA Typ. @
VPD =2.8V and 3.0mA Max @ VPD =2.9 V
18
20
22
mA
VCC =3.5V; VPD =2.7V; VPD + VCC
19
23
29
mA
10
μA
VCC =3.5V; VPD =2.9V; VPD + VCC
VCC =3.5V; VPD ≤ 0.9 V
Power Down
Driver Amplifier
1880MHz Performance
Gain
Output IP3
Schematic per Driver Amplifier Application;
T=25°C, RF=1880MHz, VPD =2.8V
13.0
14.0
14.5
dB
VCC =3.5V
13.0
14.0
14.5
dB
VCC =3.0V
13.0
14.0
14.5
dB
VCC =2.7V
27
+35.0
38
dBm
VCC =3.5V
Noise Figure
Reverse Isolation
+31.0
dBm
VCC =3.0V
+28.8
dBm
VCC =2.7V
1.85
2.0
dB
VCC =3.5V
1.8
2.0
dB
VCC =3.0V
1.75
2.0
dB
VCC =2.7V
19
dB
VCC =3.5V
19
dB
VCC =3.0V
19
dB
VCC =2.7V
Input VSWR
1.6:1
2.0:1
Output VSWR
1.6:1
2.0:1
P1dB
Rev A0 DS060206
Using External LC network used on evaluation
board.
14
15.6
dBm
VCC =3.5V
13
14.1
dBm
VCC =3.0V
12
13.1
dBm
VCC =2.7V
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
3 of 14
RF2878
Parameter
Min.
Specification
Typ.
Max.
Unit
Power Supply
Condition
T = 25 °C
Voltage (VCC)
2.5 to 6.0
V
Voltage (VPD)
2.7
2.8
2.9
V
Current Consumption Driver Amplifier
11.5
19.5
25.5
mA
VCC =3.5V; VPD =2.8V; VPD +VCC - Current
Consumption from VPD is 2.0mA Typ.@
VPD =2.8V and 3.0mA Max @ VPD =2.9 V
16
18
20
mA
18
20.5
27
mA
VCC =3.5V; VPD =2.7V; VPD + VCC
VCC =3.5V; VPD =2.9V; VPD + VCC
10
μA
VCC =3.5V; VPD ≤ 0.9 V
Power Down
4 of 14
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev A0 DS060206
RF2878
Pin
1
Function
RF IN
Description
Interface Schematic
RF input pin. This pin is DC coupled and matched to 50Ω at 836 MHz.
To Bias
Circuit
RF OUT
RF IN
2
GND1
3
VPD
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
For low noise amplifier applications, this pin is used to control the bias current. See plots for bias current settings. An external resistor (R1) can be
used to set the bias current for any VPD voltage.
PD
For driver amplifier applications, this is the Power Down pin for the IC.
VPD =2.8V +/- 0.1V is required for proper operation. VPD< 0.9V turns off
the Part. External RF bypassing is required. The trace length between the
pin and the bypass capacitors should be minimized. The ground side of the
bypass capacitors should connect immediately to ground plane. Nominal
current required for VPD =2.8V is 2.0mA typical and 3.0mA Max (@
VPD =2.9V).
4
RF OUT
5
GND2
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.
Ground connection. For best performance, keep traces physically short
and connect immediately to ground plane.
Package Drawing
1.60
+ 0.01
0.15
0.05
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
Rev A0 DS060206
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
5 of 14
RF2878
Application Schematic:
Low Noise Amplifier ~881MHz Operation
22 nF
J1
RF IN
1
5
2
VPD
2 pF
1k Ω
3
10 nF
J2
RF OUT
4
100 pF
12 nH
VCC
100 pF
10 nF
Application Schematic:
Low Noise Amplifier ~1950MHz Operation
22 nF
J1
RF IN
1
5
2
VPD
1 pF
1k Ω
3
10 nF
100 pF
J2
RF OUT
4
3.3 nH
VCC
100 pF
6 of 14
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
10 nF
Rev A0 DS060206
RF2878
Application Schematic:
Driver Amplifier ~836MHz Operation
22 nF
J1
RF IN
1
5
2
VPD
2 pF
0Ω
3
10 nF
J2
RF OUT
4
100 pF
12 nH
VCC
100 pF
10 nF
Application Schematic:
Driver Amplifier ~1880MHz Operation
22 nF
J1
RF IN
1
5
2
VPD
1 pF
0Ω
3
10 nF
100 pF
J2
RF OUT
4
3.3 nH
VCC
100 pF
Rev A0 DS060206
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
10 nF
7 of 14
RF2878
Evaluation Board Schematic:
Low Noise Amplifier ~881MHz Operation
P1
P1-1
P1-3
1
VPD
2
GND
3
VCC
C7
4.7 μF
J1
RF IN
50 Ω μstrip
C3
22 nF
1
5
2
C4
2 pF
R1
0Ω
VPD
3
C1
10 nF
50 Ω μstrip
4
C2
220 pF
L1
12 nH
2878401 r-
VCC
C5
220 pF
8 of 14
J2
RF OUT
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
C6
10 nF
Rev A0 DS060206
RF2878
Evaluation Board Schematic:
Driver Amplifier ~836MHz Operation
P1
P1-1
P1-3
1
VPD
2
GND
3
VCC
C7
4.7 μF
J1
RF IN
50 Ω μstrip
C3
22 nF
1
5
2
R1
0Ω
C4
2 pF
VPD
3
C1
10 nF
4
C2
220 pF
J2
RF OUT
L1
12 nH
2878400 r1
VCC
C5
220 pF
Rev A0 DS060206
50 Ω μstrip
C6
10 nF
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
9 of 14
RF2878
Evaluation Board Layout - 900MHz Driver
Board Size 0.948” x 1.063”
Board Thickness 0.031”; Board Material FR-4
Evaluation Board Layout - 900MHz LNA
10 of 14
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev A0 DS060206
RF2878
Rev A0 DS060206
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
11 of 14