SPA2118Z
SPA2118Z
SPA2118Z
850MHz 1
Watt Power
Amplifier with
Active Bias
850MHz 1 WATT POWER AMPLIFIER WITH
ACTIVE BIAS
Package: Exposed Pad SOIC-8
Product Description
Features
RFMD’s SPA2118Z is a high efficiency GaAs Heterojunction Bipolar Transistor (HBT) amplifier housed in a low-cost surface-mountable plastic
package. These HBT amplifiers are fabricated using molecular beam epitaxial growth technology which produces reliable and consistent performance from wafer to wafer and lot to lot. This product is specifically
designed for use as a driver amplifier for infrastructure equipment in the
850MHz band. Its high linearity makes it an ideal choice for multi-carrier
and digital applications.
Optimum Technology
Matching® Applied

VBIAS
Active
Bias
SiGe BiCMOS
Si BiCMOS
RFOUT/
VC2
RFIN
SiGe HBT




GaAs MESFET
InGaP HBT


VC1
GaAs HBT

Applications


GaAs pHEMT
VPC2
Si CMOS
High Linearity Performance
+20.7dBm, IS-95 CDMA
Channel Power at -55dBc
ACP
+47dBm Typ. OIP3
High Gain: 33dB Typ.
On-Chip Active Bias Control
Patented high Reliability GaAs
HBT Technology
Surface-Mountable Plastic
Package

IS-95 CDMA Systems
Multi-Carrier Applications
AMPS, ISM Applications
Si BJT
GaN HEMT
RF MEMS
Parameter
Min.
Frequency of Operation
Output Power at 1dB Compression
Adjacent Channel Power
810
Small Signal Gain
Input VSWR
Output Third Order Intercept Point
Noise Figure
Device Current
31.5
Device Voltage
Thermal Resistance
(Junction - Lead)
Test Conditions: Z0 =50
4.75
Specification
Typ.
360
Temp=25°C
900
29.0
-55.0
Max.
960
Unit
Condition
-52.0
MHz
dBm
dBc
33.0
1.5:1
47.0
5.0
400
34.5
dB
425
dBm
dB
mA
IBIAS =10mA, IC1 =70mA, IC2 =320mA
5.0
31
5.25
V
°C/W
TL =85°C
IS-95 at 880MHz, ±885KHz offset,
POUT =20.7dBm
880MHz
Power out per tone=+14dBm
VCC =5.0V
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.
DS121024
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
(+1) 336-678-5570
[email protected]
1 of 7
SPA2118Z
Absolute Maximum Ratings
Parameter
Rating
Unit
Max Supply Current (IC1) at VCC typ.
150
mA
Max Supply Current (IC2) at VCC typ.
750
mA
Max Device Voltage (VCC) at ICC typ.
6.0
V
Max RF Input Power
10
dBm
Max Junction Temp (TJ)
+160
°C
Max Storage Temp
+150
°C
3
MSL
Moisture Sensitivity Level
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.
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.
RFMD Green: RoHS compliant per EU Directive 2002/95/EC, halogen free
per IEC 61249-2-21, < 1000ppm each of antimony trioxide in polymeric
materials and red phosphorus as a flame retardant, and <2% antimony in
solder.
Operation of this device beyond any one of these limits may cause permanent damage. For reliable continuous operation, the device voltage and current must not
exceed the maximum operating values specified in the table on page one.
Bias Conditions should also satisfy the following expression:
IDVD <(TJ -TL)/RTH, j-l
850MHz to 950MHz Application Circuit Data, ICC =400mA, VCC =5V, IS-95, 9 Channels Forward
880 MHz Adjacent Channel Power vs. Channel Output Power
-40.0
-45.0
-40C
25C
85C
-50.0
dBc
-55.0
-60.0
-65.0
-70.0
-75.0
-80.0
-85.0
11
12 13
14
15
16 17
18 Power
19 20(dBm)
21 22
Channel
Output
23 24
25
dBm
IS-95 CDMA at 880 MHz
T=+25C
+24 dBm
+20 dBm
+10 dBm
+16 dBm
2 of 7
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS121024
SPA2118Z
850MHz to 950MHz Application Circuit Data, ICC =400mA, VCC =5V
Input/Output Return Loss,
Isolation vs Frequency
0
Gain vs. Frequency
40
T=+25°C
S22
-10
-40C
25C
85C
36
S11
dB
dB
-20
32
-30
28
-40
S12
24
-50
0.8
0.85
0.9
0.95
0.8
1
0.85
0.9
GHz
P1dB vs Frequency
1
Device Current vs. Source Voltage
36
600
-40C
25C
85C
25C
-40C
85C
500
Device Current (mA)
34
32
dBm
0.95
GHz
30
28
26
400
300
200
100
0
0.8
0.85
0.9
GHz
DS121024
0.95
1
0
1
2
3
4
5
6
Vcc (V)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
3 of 7
SPA2118Z
Pin
1
Function
VC1
Description
2
3
4
VBIAS
RF IN
VPC2
5, 6,
7, 8
EPAD
RF OUT/VC2
Bias control pin for the active bias network for the second stage. The recommended configuration is shown in the application schematic.
RF output and bias pin. Bias should be supplied to this pin through an external RF choke. Because DC biasing is present
on this pin a DC-blocking capacitor should be used in most applications. (See application schematic.) The supply side of
the bias network should be well bypassed. An output matching network is necessary for optimum performance.
GND
Exposed area on the bottom side of the package needs to be soldered to the ground plane of the board for thermal and
RF performance. Several vias should be located under the EPAD as shown in the recommended land pattern.
Supply voltage for the first stage transistor. The configuration as shown on the application schematic is required for optimum RF performance.
Bias control pin for the active bias network. Recommended configuration is shown in the application schematic.
RF input pin. This pin requires the use of an external DC-blocking capacitor as shown in the application shcematic.
Simplified Device Schematic
2
4
2
ACTIVE BIAS
NETWORK
5-8
1
ACTIVE BIAS
NETWORK
3
Parameter (
Recommended Land Pattern
Dimensions in inches (millimeters)
Refer to drawing posted at www.rfmd.com for tolerances.
0.150 [3.81]
Plated-Thru Holes
(0.015" Dia, 0.030" Pitch)
0.140 [3.56]
Machine
Screws
0.300 [7.62]
0.080 [2.03]
0.050 [1.27]
4 of 7
0.020 [0.51]
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS121024
SPA2118Z
Package Drawing
Dimensions in inches (millimeters)
Refer to drawing posted at www.rfmd.com for tolerances.
DS121024
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
5 of 7
SPA2118Z
850MHz to 950MHz Application Schematic
Vcc
10uF Tantalum
External Connection
82pF
IC2
Z=63
, 9.5°
1000pF
IC1
2.2nH
6.8K
IBIAS
39pF
1
8
2
7
3
6
4
5
Z=50
33 nH
, 15.1°
100pF
6.8pF
15pF
1200pF
330 Ohm
Vpc
850MHz to 950MHz Evaluation Board Layout and Bill of Materials
Vcc
C3
C4
C2
L1
C1
C5
R1
L2
Ref. Des.
Value
Part Number
C1
15pF, 5%
Rohm MCH18 series
C2
82pF, 5%
Rohm MCH18 series
C3
10uF, 10%
AVX TAJB106K020R
C4
1000pF, 5%
Rohm MCH18 series
C5
39pF, 5%
Rohm MCH18 series
C6
1200pF, 5%
Rohm MCH18 series
C7
6.8pF, ±0.5pF
Rohm MCH18 series
C8
100pF, 5%
Rohm MCH18 series
L1
2.2nH, ±0.3nH
Toko LL1608-FS series
L2
33nH, 5%
Coilcraft 1008HQ series
R1
6.8K Ohm, 5%
Rohm MCR03 series
R2
330 Ohm, 5%
Rohm MCR03 series
2012
C8
C6
C7
R2
Sirenza Microdevices
ECB-101161 Rev. C
SOIC-8 PA
Eval Board
Vpc
6 of 7
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
DS121024
SPA2118Z
Branding Diagram
Ordering Information
Ordering Code
DS121024
Description
SPA2118Z
7” Reel with 500 pieces
SPA2118ZSQ
Sample bag with 25 pieces
SPA2118ZSR
7” Reel with 100 pieces
SPA2118Z-EVB1
900MHz PCBA
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected]
7 of 7
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