RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
RF MICRO DEVICES® and RFMD® 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. ©2013, RF Micro Devices, Inc.
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RFVC1839
12.44GHz to 13.76GHz MMIC VCO with
Fo/2 and Fo/4 Outputs
RFMD's RFVC1839 is a 5V InGaP MMIC VCO with an integrated frequency
divider providing additional Fo/2 and Fo/4 outputs. With an Fo frequency
range of 12.44GHz to 13.76GHz its monolithic structure provides excellent
temperature, shock, and vibration performance. Output power (Fo) is
+8dBm and is flat across the tuning voltage range of 1.5V to 14.5V. Phase
noise is typically -112dBc/Hz at 100kHz offset. The device operates from a
low supply current of 270mA which can be further reduced to 210mA by
disabling the divider functions if not required. The RFVC1839 is available in
a low cost 5mm x 5mm surface mount plastic overmolded QFN outline.
Functional Block Diagram
Ordering Information
RFVC1839S2 Sample bag with 2 pieces
RFVC1839SB Sample bag with 5 pieces
RFVC1839SQ Bag with 25 pieces
RFVC1839SR Bag with 100 pieces
RFVC1839TR7 7" Reel with 750 pieces
RFVC1839PCBA-410 Evaluation Board
Package: Plastic QFN, 32-pin,
5mm x 5mm x 0.85mm
Features
■ Multiple Frequency Outputs
Fo: 12.44GHz to 13.76GHz
Fo/2: 6.22GHz to 6.88GHz
Fo/4: 3.11GHz to 3.44GHz
■ No External Resonator Required
■ Integrated Frequency Divider
■ Phase Noise: -112dBc/Hz at
100kHz Offset
■ Flat Output Power Over Frequency
Tuning Range 1.5V to 14.5V
Fo: 8dBm
Fo/2: 8dBm
Fo/4: -2dBm
■ Low Power Consumption
5V/270mA (Divider On)
5V/210mA (Divider Off)
32-Lead 5mm x 5mm Plastic
Overmolded QFN
Applications
■ Point-to-Point Radio
■ Point-to-Multipoint Radio
■ Satellite Communications
■ Test Equipment
■ Military
■ Aerospace
RFVC1839
2 of 10
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
The information in this publication is believed to be accurate. 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.
Absolute Maximum Ratings
Parameter
Unit
VCC_OSC, VCC_DIG
V
VTUNE
V
Junction Temperature (TJ)
°C
Continuous PDISS (TA = 85°C) (derate 37mW/°C above TA = 85°C)
W
Junction to Case, Thermal Resistance (Rθ(j-a))
°C/W
Storage Temperature
°C
Operating Temperature
°C
ESD Sensitivity (HBM)
Caution! ESD sensitive device.
RFMD Green: RoHS status based on EU
Directive 2011/65/EU (at time of this
document revision), 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.
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.
Nominal Operating Parameters
Parameter
Specification
Unit
Condition
Min
Typ
Max
Electrical Specifications
VCC = 5V, TA = +25°C
Operating Frequency
Fo
12.44
13.76
GHz
Fo/2
6.22
6.88
GHz
Fo/4
3.11
3.44
GHz
Output Power
Fo
8
dBm
Fo/2
8
dBm
Fo/4
-2
dBm
SSB Phase Noise
10kHz offset at RFOUT
-87
dBc/Hz
VTUNE = 5V
100kHz offset at RFOUT
-112
dBc/Hz
Tune Voltage
1.5
14.5
V
Supply Current
VCC_OSC
210
mA
VCC_DIG
60
mA
Tune Port Leakage Current
10
µA
Output Return Loss
7
dB
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
The information in this publication is believed to be accurate. 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.
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RFVC1839
Parameter
Specification
Unit
Condition
Min
Typ
Max
Electrical Specifications
(continued)
VCC = 5V, TA = +25°C
Harmonics/Sub-harmonics
Measured with RF probes at package, not at SMA connections on EVB
1/2
40
dBc
3/2
35
dBc
2nd
8.5
dBc
3rd
18
dBc
Pulling (into a 2.0:1 VSWR)
5
MHz pp
Pushing
30
MHz/V
Frequency Drift Rate
1.1
MHz/°C
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
The information in this publication is believed to be accurate. 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.
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RFVC1839
Typical Performance
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
The information in this publication is believed to be accurate. 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.
5 of 10
RFVC1839
Typical Performance (continued)
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
The information in this publication is believed to be accurate. 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.
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RFVC1839
Pin Names and Descriptions
Pin
Name
Description
Interface Schematic
1-3
N/C
No internal connection.
4
RFOUT/4
VCO RF output at Fo/4. Externally DC-blocked.
5 V
RFOUT/4
5
GND
Connect to PCB ground.
GND
6
VCC_DIG
Supply voltage input for the integrated frequency divider. Typical
+5 V. Ground this pin to disable digital divider and reduce current
consumption by 60mA.
VCC_DIG
7-10
N/C
No internal connection.
11
GND
Connect to PCB ground.
See Pin 5 interface schematic
12
RFOUT/2
VCO RF output at Fo/2. Internally DC-blocked.
RFOUT/2
13-18
N/C
No internal connection.
19
RFOUT
VCO RF output at Fo. Internally DC-blocked.
RFOUT
20
N/C
No internal connection.
21
VCC_OSC
Supply voltage input for the VCO. Typical +5V.
VCC_OSC
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
The information in this publication is believed to be accurate. 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.
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RFVC1839
Pin Names and Descriptions (continued)
Pin
Name
Description
Interface Schematic
22-28
N/C
No internal connection.
29
VTUNE
VCO control voltage input.
VTUNE
30-32
N/C
No internal connection.
PKG BASE
GND
Connect to PCB ground.
See Pin 5 interface schematic
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
The information in this publication is believed to be accurate. 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.
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RFVC1839
Package Drawing (all dimensions in mm)
Notes:
1. Dimensions are for reference only.
2. Package body material: Plastic.
3. Lead and paddle plating: 8µm minimum of Sn over Cu leadframe.
Recommended PCB Layout
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
The information in this publication is believed to be accurate. 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.
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RFVC1839
Sample Application Circuit Schematic
Bias Conditions
Output
VCC_OSC = 5V
FOUT = 13.0GHz
VCC_DIG = 5V
FOUT/2 = 6.5GHz
VTUNE = 5V
FOUT/4 = 3.3GHz
RF Micro Devices Inc. 7628 Thorndike Road, Greensboro, NC 27409-9421 DS130807
For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.
The information in this publication is believed to be accurate. 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.
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RFVC1839
Evaluation Board Layout
Evaluation Board Bill of Materials (BOM)
Item
Description
U1
RFVC1839 VCO
C3, C5, C7, C8
1000pF Capacitor, 0402 Package
C2, C4, C6
4.7µF Tantalum Capacitor
C1
68µF Tantalum Capacitor
R1
0Ω Resistor, 0603 Package
P1, P2
4-PIN DC connector
J1, J2, J3, J4
PCB mount SMA connector
PCB
VC183x410(D)