RFCM2680
RFCM2680
45MHz to
1003MHz
GaAs/GaN
Power Doubler MODULE
45MHz TO 1003MHz GaAs/GaN
POWER DOUBLER MODULE
Package: 9-pin, 9.0mm x 8.0mm x 1.375mm
Current Setting
V+
Features
Excellent Linearity
Superior Return Loss
Performance
INPUT
Extremely Low Distortion
Optimal Reliability
Low Noise
RFCM2680
Unconditionally Stable Under all
Terminations
Extremely High Output Capability
22.5dB Min. Gain at 1003MHz
450mA Max. at 24VDC
Functional Block Diagram
Product Description
Applications
OUTPUT
45MHz to 1003MHz CATV
Amplifier Systems
The RFCM2680 is a Power Doubler amplifier SMD Module. The part employs GaAs
pHEMT die and GaN HEMT die, has high output capability, and is operated from
45MHz to 1003MHz. It provides excellent linearity and superior return loss performance with low noise and optimal reliability.
DC current of the device can be externally adjusted for optimum distortion performance versus power consumption over a wide range of output level.
Ordering Information
RFCM2680SB
RFCM2680SR
RFCM2680TR7
RFCM2680TR13
RFCM2680PCBA-410
Sample bag with 5 pieces
7” Reel with 100 pieces
7” Reel with 500 pieces
13” Reel with 1000 pieces
Fully Assembled Evaluation Board
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
GaN HEMT
Si CMOS
Si BJT
BiFET HBT
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. ©2012, RF Micro Devices, Inc.
DS120518
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
1 of 6
RFCM2680
Absolute Maximum Ratings
Parameter
RF Input Voltage (single tone; on
evaluation board)
DC Supply Over-Voltage (5 minutes)
Rating
Unit
60
dBmV
30
V
Storage Temperature
-40 to +100
°C
Operating Mounting Base Temperature
-30 to +100
°C
l
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.
RoHS (Restriction of Hazardous Substances): Compliant per EU Directive
2002/95/EC.
Parameter
Min.
Specification
Typ.
Max.
Unit
V+ = 24V; TMB = 30°C; ZS = ZL = 75Ω;
IDC = IDC Typical
Overall
Power Gain
Slope[1]
21.0
21.5
22.0
dB
f = 45MHz
22.5
23.0
24.0
dB
f = 1003MHz
1.0
1.5
2.5
dB
f = 45MHz to 1003MHz
1
dB
f = 45MHz to 1003MHz (Peak to Valley)
20
dB
f = 45MHz to 320MHz
19
dB
f = 320MHz to 640MHz
18
dB
f = 640MHz to 870MHz
16
dB
f = 870MHz to 1003MHz
20
dB
f = 45MHz to 320MHz
19
dB
f = 320MHz to 640MHz
18
dB
f = 640MHz to 870MHz
17
dB
f = 870MHz to 1003MHz
dB
f = 50MHz to 1003MHz
Flatness of Frequency Response
Input Return Loss
Output Return Loss
Noise Figure
3.0
Output P1dB
32
Output IP3
49
Total Current Consumption (DC)
430.0
4.0
dBm
dBm
450.0
6MHz tone spacing at 16dBm/tone
mA
Distortion data 40MHz to
550MHz
V+ = 24V; TMB = 30°C; ZS = ZL = 75Ω;
IDC = IDC typical
CTB
-73
-69
dBc
XMOD
-66
-61
dBc
-75
-65
dBc
CSO
CIN
Condition
55
58
VO = 60dBmV at 1003MHz, 18dB extrapolated
tilt, 79 analog channels plus 75 digital channels (-6dB offset)[2][4]
dB
Distortion data 40MHz to
550MHz
V+ = 24V; TMB = 30°C; ZS = ZL = 75Ω;
IDC = 370mA
CTB
-73
dBc
XMOD
-67
dBc
CSO
-76
dBc
CIN
59
dB
VO = 57dBmV at 1003MHz, 18dB extrapolated
tilt, 79 analog channels plus 75 digital channels (-6dB offset)[3][4]
[1] The slope is defined as the difference between the gain at the start frequency and the gain at the stop frequency.
[2] 79 analog channels, NTSC frequency raster: 55.25MHz to 547.25MHz, +42dBmV to +51.4dBmV tilted output level, plus 75 digital
channels, -6dB offset relative to the equivalent analog carrier.
[3] 79 analog channels, NTSC frequency raster: 55.25MHz to 547.25MHz, +39dBmV to +48.4dBmV tilted output level, plus 75 digital
channels, -6dB offset relative to the equivalent analog carrier.
[4] Composite Second Order (CSO) - The CSO parameter (both sum and difference products) is defined by the NCTA. Composite Triple Beat
(CTB) - The CTB parameter is defined by the NCTA. Cross Modulation (XMOD) - Cross modulation (XMOD) is measured at baseband (selective
voltmeter method), referenced to 100% modulation of the carrier being tested. Carrier to Intermodulation Noise (CIN) - The CIN parameter is
defined by ANSI/SCTE 17 (Test procedure for carrier to noise).
2 of 6
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS120518
RFCM2680
Current Adjustment Using Resistor R3
The RFCM2680 can be operated over a wide range of current to provide optimal required performance with minimum current
consumption. Changing the value of resistor R3 on application circuit allows a variation of the current between 430mA and
330mA (typ.). Recommended current consumption is between 370mA to 430mA. Within this range, gain change less than
0.2dB and the noise figure changes less than 0.1dB.
RFCM2680CurrentversusResistorR3
I[mA]
440
420
Device Current [mA],
typical
R3 []
430
410
390
370
350
330
1500
1400
1300
1200
1100
1000
V+ = 24V; TMB = 30°C; ZS =
ZL = 75Ω
400
380
360
340
320
1000
1100
1200
1300
1400
R3[] 1500
Change of Distortion Performance Over Current
WorstCaseDistortionDegradation
overDeviceCurrent,typicalvalues
I[mA]
440
420
400
CTB
380
CIN
360
340
320
0
1
2
3
4
5
6
7
8
9
10
11
CTBandCINdegradation[dB]
Test conditions:
V+= 24V; TMB = 30°C; ZS = ZL = 75;
VO = 60dBmV at 1003MHz, 18dB extrapolated tilt, 79 analog channels plus 75 digital channels (-6dB offset)
DS120518
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
3 of 6
RFCM2680
Application Circuit
FB1
Bead 60
V+
C1
220pF
R1
10k
D1
TGL34-33A
R2
3.9k
D2
MM3Z5V6T1
GND
R3
1.5k
C3
4.7nF
T1
RFXF0006
C2
4.7nF
R4
10
C4
1.2pF
R5
470
RF IN
C6
4.7nF
C9
DNI
R7
DNI
R8
DNI
9
1
C10
0.5pF
R6
470
8
2
3
U1
RFCM2680
T2
RFXF0008
C13
DNI
T3
RFXF0009
C7
4.7nF
RF OUT
7
C11
0.5pF
6
4
5
C5
1.2pF
C14
DNI
C8
4.7nF
R10
DNI
C12
DNI
R11
DNI
R12
DNI
R9
DNI
Evaluation Board Layout
Note:
The ground plane of the RFCM2680 module should be soldered onto a board equipped with as many thermal vias as possible.
Underneath this thermal via array a heat sink with thermal grease needs to be placed which is able to dissipate the complete
module DC power (up to 10.4W). In any case the module backside temperature should not exceed 100°C.
4 of 6
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS120518
RFCM2680
Component Chart
Component Type
Value
Evaluation Board
RFCM2680PCBA-410
Capacitor
220 pF
Capacitor
4.7 nF
Capacitor
1.2 pF
Capacitor
DNI
Capacitor
0.5pF
Resistor
10k
Resistor
3.9k
Resistor
1.5k
Resistor
10
Resistor
470
Resistor
DNI
Impedance Bead
60 at 100MHz
Transient Voltage Suppressor Diode
TGL34-33A
Zener Diode
MM3Z5V6T1G
Transformer
RFXF0006
Transformer
RFXF0008
Transformer
RFXF0009
DUT
RFCM2680
Quantity
Designator
1
1
5
2
4
2
1
1
1
1
2
6
1
1
1
1
1
1
1
C1
C2, C3, C6, C7, C8
C4, C5
C9, C12, C13, C14
C10, C11
R1
R2
R3
R4
R5, R6
R7-R12
FB1
D1
D2
T1
T2
T3
U1
Comment
optional to improve matching in application
optional to improve matching in application
Pin Configuration
RF IN +
1
GND
2
GND
GND
RF IN -
9
RF OUT +
8
GND
7
V+
6
GND
5
RF OUT -
3
4
Pin Names and Description
Pin
1
2, 3,
6, 8
4
5
7
9
DS120518
Name
RF IN+
GND
RF INRF OUTV+
RF OUT+
Description
RF AMP Positive Input
Ground pins
RF AMP Negative Input
RF AMP Negative Output
Supply Voltage, +24V
RF AMP Positive Output
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
5 of 6
RFCM2680
Package Drawing
Dimensions in millimeters
9.000±0.100
3.700
PIN 1 Indicator
RFCM2680
YYWW
Trace Code
DATA CODE
(YEAR/WEEK)
8.000±0.100
A
1.000
A
A
A
A
0.650
0.000
0.650
A
2x 2.000
A
1.000
A
A
Pin1
2x 2.000
0.275
Ref
molding cap
6 of 6
3.400
4x 4.100
0.000
A= 0.600 x 0.600 mm
1.375±0.075
5x 4.100
3.400
3.700
substrate
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or customerservice@rfmd.com.
DS120518