Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com October 2003
CV211-1
PCS/DCS-band Dual-Branch Downconverter Product Information
The Communications Ed
g
e TM
Product Features
• High dynamic range downconverter
with integrated LO and IF amplif iers
• Dual channels for diversit y
• +29.5 dBm Input IP3
• +10 dBm Input P1dB
• RF: 1710 – 2000 MHz
• IF: 65 – 250 MHz
• Single supply operation (+5 V)
• 6x6 mm 28-pin QFN package
• Low-side LO configuration
• Common footprint with other
PCS/UMTS/cellular versions
Product Description
The CV211-1 is a dual-channel high-linearity
downconverter designed to meet the demanding
performance, functionality, and cost goals of current and
next generation mobile infrastructure basestations. It
provides high dynamic range performance in a low profile
surface-mount leadless package that measures 6 x 6 mm
square.
It is ideally suited for high dynamic range receiver front
ends using diversity receive channels. Functionality
includes frequency conversion & IF amplification, while
an integrated LO driver amplifier powers the passive
mixer. The MCM is implemented with reliable and
mature GaAs MESFET and InGa P HBT technology .
Typical applications include frequency downconversion
used in PCS/DCS-band 2.5G and 3G mobile base
transceiver stations.
Functional Di agram
Top View
Specifications1
Parameters Units Min Typ Max Comments
RF Frequency Range MHz 1710 2000
LO Frequency Range MHz 1460 1935
IF Center Frequency Range MHz 65 240 250 See note 2
% Ba ndw idth a r ound I F c e nter fre que ncy % ±7.5 See note 3
SSB Conversion Gain dB 8 10 12 Temp = 25° C
Gain Drift over Temp (-40° C to 85° C) dB -1.5 ±0.5 1.5 Referenced to +25° C
Input IP3 dBm +25 +29.5 See note 4
Input IP2 dBm +33 +38 See note 4
Input 1 dB Compression Point dBm +10 See note 4
Noise Figure dB 11 See note 5
LO Input Drive Level dBm -2.5 0 +2.5
LO-RF Isolation dB 8 PLO = 0 dBm
LO-IF Isolation dB 32 PLO = 0 dBm
Branch-Branch Isolation dB 45
Return Loss: RF Port dB 18
Return Loss: LO Port dB 15
Return Loss: IF Port dB 12
Operating Supply Voltage V +5
Supply Current mA 320 380 475
Thermal Resistance °C / W 27
Junction Temperature °C 160 See note 6
1. Specifications when using the application specific circuit (shown on page 3) with a low side LO = 0 dBm in a downconverting applicat ion at 25° C.
2. IF matching components affect the center IF frequency. Proper component values for other IF center frequencies t han shown can be provided by emailing to applications.engineering@wj.com.
3. The IF bandwidth of the converter is defined as 15% around any center frequency in its oper ating IF frequency range. The band wid th is d et e rmined wit h exter nal compone nts. Specifica tions a re v alid around
the total ±7.5% bandwidth. ie. with a center frequency of 240 MHz, the specifications are valid from 240 ± 18 MHz.
4. Assumes the supply voltage = +5 V. IIP3 is measured with ∆f = 1 MHz with RFin = -5 dBm / tone.
5. Assumes LO injection noise is filtered at t he thermal noise floor, -174 dBm/Hz, at the RF, IF, and Image frequencies.
6. The maximum junct ion temperature ensures a minimum MTBF rating of 1 million hours of usage.
Absolute Maximum Rating Ordering I nformation
Parameters Rating Part No. Description
Operating Case Temperature -40° to +85° C CV211-1 PCS/DCS-band Dual-Branch Downconverter
Storage Te mperat ure -55° to +125° C CV211-1PCB240 Fully-Assembled Application Board, IF = 240 MHz
DC Voltage +5.5 V
Junction Temperature +220 °C
Operation of this device above any of these parameter s may cause permanent da mage.
1
2
3
4
5
6
7
21
20
19
18
17
16
15
28 27 26 25 24 23 22
8 9 10 11 12 13 14
IF Amp 2
IF Amp 1
LO Driver Amp
BIAS
GND
N/C
GND
LO
GND
N/C
RF 1
INPUT
GND
BIAS
GND
N/C
GND
GND
MIXER
IF1
GND
A
MP1
INPUT
GND
GND
GND
MIXE
R
IF2
GND
GND
GND
IF
AMP2
INPU
T
IF1
OUTPUT
IF2
OUTPU
T
IF
RF
RF
RF 2
INPU
T
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com October 2003
CV211-1
PCS/DCS-band Dual-Branch Downconverter Product Information
The Communications Ed
g
e TM
Device Architecture / Application Circuit Information
Typical Downconverter Performa nce Chain Analysis (Ea ch Branch)
Cumulative Perfor mance
Stage Gain
(dB)
Input
P1dB
(dBm)
Input
IP3
(dBm)
NF
(dB) Current
(mA) Gain
(dB)
Input
P1dB
(dBm)
Input
IP3
(dBm)
NF
(dB)
L O A m p / MMIC M ix er -9 11 30 9.3 80 -9 11 30 9.3
IF Amplifier 19 2 22 1.8 150 10 8 27.5 11
CV211-1 Cumul ative Perf ormanc e 380* 10 +8 +27.5 11
* The 2nd branch includes another mixer and IF amplifier, which increases the total current consumption
of the MCM to be 380 mA.
CV211-1: The application circuit can be broken up into three main
functions as denoted in the colored dotted areas above: RF/IF diplexing
(blue), IF am plifier ma tching (gre en), a nd dc biasing (purple). There are
various place holde rs f or c hip com ponents in the ci rcuit sc hem atic so that
a com mon P CB can b e us ed for all WJ du al -b ran ch convert ers . F urt h er
details are given in the Application Note located on the website titled
“CV2xx Series - PWB Design Guidelines”.
External Diplexer: This is only used with the cellular-band CV
products. The mixer performs the diplexing internally for the
CV211-1; therefore the components shown in the diplexer section
should be not be loaded except for L3, L10, L7, and L11, which
should contain a 0 Ω jump er.
IF Amplifier Matching: The IF amplifier requires matching
elements to optimize the performance of the amplifier to the desired
IF center frequency. Since IF bandwidths are typically on the order
of 5 to 10%, a simple two element matching network, in the form of
either a high-pass or low-pass filter structure, is sufficient to match
the MMIC IF amplifier over these narrow bandwidths. Proper
component values for other IF center frequencies can be provided by
emailing to applications.engineering@wj.com.
DC biasing: DC bias mu st be provided for the LO and IF amplifiers
in the converter. R1 sets the operating current for the last stage of the
LO amplifier and is chosen to optimize the mixer LO drive level.
Proper RF chokes and bypass capacitors are chosen for proper
amplifier biasing at the intended frequency o f operation. The “+5 V ”
dc bias should be supplied directly from a voltage regulator.
Printed Circuit Board Material:
.014” FR-4
,
4 la
y
ers
,
.062 ” tota l thickness
1
2
3
4
5
6
7
21
20
19
18
17
16
15
28 27 26 25 24 23 22
8 9 10 11 12 13 14
IF Amp 2
IF Amp 1
LO Driver Amp
BIAS
GND
N/C
GND
LO
GND
N/C
RF 1
INPU
T
GND
BIAS
GND
N/C
GND
GND
MIXER
IF1
GND
A
MP1
INPUT
GND
GND
GND
MIXE
R
IF2
GND
GND
GND
IF
AMP2
INPU
T
IF1
OUTPUT
IF2
OUTPU
T
IF
RF
RF
RF 2
INPU
T
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.w j.com October 2003
CV211-1
PCS/DCS-band Dual-Branch Downconverter Product Information
The Communications Ed
g
e TM
Application Circuit: IF = 240 MHz (CV211-1PCB240)
PCB Layout
Circuit Boar d Material: .014” FR-4, 4 layers, .062” total th ickness
Bill of Materials
Ref. Desig. Component Size
R1 13 Ω chip resistor 0805
R2, R3, R4, L3, L7
L10, L11 0 Ω chip resistor 0603
R6, R7 2.2 Ω chip resistor 0603
C1, C5, C10, C15 1000 pF chip capacitor 0603
C4, C11 2 pF chip capacitor 0603
C6, C12, C14 .01 µF chip capacitor 0603
C7, C13 100 pF chip capacitor 0603
L 1 120 nH ch ip indu cto r 060 3
L4, L8 56 nH chip inductor 0603
L5, L9 220 nH chip inductor 0805
C2, C3, C8, C9, C16
C17, C19, C20, C21
C22, L2, L6 Do Not Place
U1 CV211-1 WJ Converter QFN
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.w j.com October 2003
CV211-1
PCS/DCS-band Dual-Branch Downconverter Product Information
The Communications Ed
g
e TM
CV211-1PCB240 Application Circuit Performance Plots
C onversion G ain vs IF Frequency
LO = 0 dB m , 1640 M Hz
7
8
9
10
11
12
215 225 235 245 255 265
IF Fr e q uen cy ( MHz )
Conversion Gain (dB)
-40 deg C +25 deg C +85 deg C
Input IP3 vs IF Frequency
LO = 0 dB m , 1640 M Hz
24
26
28
30
32
34
215 225 235 245 255 265
IF Fre que nc y (MHz )
Input IP3 (dBm)
-40 deg C +25 deg C +85 deg C
Input IP2 vs IF Frequency
LO = 0 dB m , 1640 M Hz
32
34
36
38
40
42
215 225 235 245 255 265
IF Frequency (MH z)
Input IP2 (dBm)
-40 deg C +25 deg C +85 deg C
Conversion Gain vs RF Frequency
25 deg C, IF = 240 M Hz
7
8
9
10
11
12
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Conversion Gain (dB)
LO = -2.5 dBm
LO = 0 dBm
LO = 2.5 dBm
Input IP3 vs R F Frequency
25 deg C, IF = 240 M Hz
24
26
28
30
32
34
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Input IP3 (dBm)
LO = -2.5 dBm
LO = 0 dBm
LO = 2.5 dBm
Input IP2 vs R F Frequency
25 deg C, IF = 240 M Hz, low-side LO
32
34
36
38
40
42
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Input IP2 (dBm)
LO = -2.5 dBm
LO = 0 dBm
LO = 2.5 dBm
Conversion Gain vs RF Frequency
L O = 0 d B m, IF = 24 0 MH z , lo w-s id e L O
7
8
9
10
11
12
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Conversion Gain (dB)
-40 deg C +25 deg C +85 deg C
Input IP3 vs R F Frequency
L O = 0 d B m, IF = 24 0 MH z , lo w-s id e L O
24
26
28
30
32
34
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Input IP3 (dBm)
-40 deg C +25 deg C +85 deg C
Input IP2 vs R F Frequency
L O = 0 d B m, IF = 24 0 MH z , lo w-s id e L O
32
34
36
38
40
42
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Input IP2 (dBm)
-40 deg C +25 deg C +85 deg C
Conversion Gain vs RF Frequency
25 deg C, LO = 0 dBm, IF = 240 MHz, low-side LO
7
8
9
10
11
12
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Conversion Gain (dB)
Vdd = 4.9 V
Vdd = 5.0 V
Vdd = 5.1 V
Input IP3 vs R F Frequency
25 deg C, LO = 0 dBm, IF = 240 MHz, low-side LO
24
26
28
30
32
34
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Input IP3 (dBm)
Vdd = 4.9 V
Vdd = 5.0 V
Vdd = 5.1 V
Input IP2 vs R F Frequency
25 deg C, LO = 0 dBm, IF = 240 MHz, low-side LO
32
34
36
38
40
42
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Input IP2 (dBm)
Vdd = 4.9 V
Vdd = 5.0 V
Vdd = 5.1 V
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.w j.com October 2003
CV211-1
PCS/DCS-band Dual-Branch Downconverter Product Information
The Communications Ed
g
e TM
CV211-1PCB240 Application Circuit Performance Plots (cont’d)
L-I Isolation vs LO Frequency
R e fe re nc e d w ith L O = 0 d B m
15
20
25
30
35
40
1400 1500 1600 1700 1800 1900 2000
LO Frequen cy (M Hz)
L-I Isolation (dB)
-40 deg C +25 deg C +85 deg C
L-R Isolation vs LO Frequency
R e fe re nc e d w ith L O = 0 d B m
0
5
10
15
20
25
1400 1500 1600 1700 1800 1900 2000
LO Frequen cy (M Hz)
L-R Isolation (dB)
-40 deg C +25 deg C +85 deg C
IF Return Loss vs IF Frequency
25° C
0
5
10
15
20
25
30215 225 235 245 255 265
IF Fre que nc y (MHz )
Return Loss (dB)
RF Return Loss vs RF Frequency
25° C
0
5
10
15
20
25
30
1700 1750 1800 1850 1900 1950 2000
RF Frequency (MH z)
Return Loss (dB)
LO Re turn Lo ss vs LO Frequen cy
25° C
0
5
10
15
20
25
30
1400 1500 1600 1700 1800 1900 2000
LO Frequen cy (M Hz)
Return Loss (dB)
N oise Figure vs Temperature
RF = 1880 MHz, IF = 240 M Hz, LO = 0 dB m @ 1640 M H z
4
6
8
10
12
14
-40-20020406080
Tem perature (°C)
Noise Figure (dB)
Input P1dB vs T em perature
RF = 1880 MHz, IF = 240 M Hz, LO = 0 dB m @ 1640 M H z
4
6
8
10
12
14
-40-20020406080
Tem perature (°C)
Input P1dB (dBm)
Specifications and information are subject to change without notice
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.w j.com October 2003
CV211-1
PCS/DCS-band Dual-Branch Downconverter Product Information
The Communications Ed
g
e TM
Outline Drawing
Mounting Confi guration / Land Pattern
Product Marking
The component will be lasermarked with a “CV211-1”
product label with a four-digit alphanumeric lot code
on the top surface of the package. Tape and reel
specifications for this part will be located on the
website in the “A pplication Note s” section.
ESD / MSL Information
ESD Classification: Class 1B
Value: Passes at 500 V
Test: Human Body Model (HBM)
Standa rd: JEDEC Standard JESD22 -A114
ESD Classification: Class III
Value: Passes at 500 V
Test: Charged Devi ce Model (C DM)
Standa rd: JEDEC Stan dard JESD22-C101
MSL Ra ting: Level 1 at +250 °C convec tion reflow
Standa rd: JEDEC Standard J-STD-020B
Functional Pi n Layout
Pin FUNCTION Pin FUNCTION
1 Channel 1 Mixer
RF Input 15 No Connect
2 GND 16 GND
3 LO Amp Bias 17 LO input
4 GND 18 GND
5 No Connect 19 No Connect
6 GND 20 GND
7 Channel 2 Mixer
RF Input 21 +5 V
8 GND 22 GND
9 Channel 2 Mixer
IF Output 23 Channel 1
IF Amp Output / Bias
10 GND 24 GND
11 Channel 2 IF Amp
Input 25 Channel 1
IF Amp Input
12 GND 26 GND
13 Channel 2
IF Amp Output / Bias 27 Channel 1 Mixer
IF Output
14 GND 28 GND
