Download GNS RF2422

RF2422
2.5GHZ DIRECT QUADRATURE MODULATOR
NOT FOR NEW DESIGNS
RoHS Compliant & Pb-Free Product
Package Style: SOIC-16





Single 5V Power Supply
Integrated RF Quadrature
Network
No Tuning Required
Low LO Input Level
Digitally Controlled Power
Down Mode
800MHz to 2500MHz Operation

15
Q SIG
3
GND2
4
GND2

5
LO
6
VCC1
-45°
+45°
7
8
POWER
CONTROL
14
GND1
13
GND1
12
GND1
11
VCC2
10
GND1
9
RF OUT
Functional Block Diagram
W
Digital Communications Systems
Spread-Spectrum Communication Systems
GMSK,QPSK,DQPSK,QAM
Modulation
GSM, DCS 1800, JDC, DAMPS Systems
Commercial and Consumer
Systems
NO
T

2
Product Description
NE

Q REF
PD
FO
R

I SIG
GND2
Applications

16
DE

1
SI
GN
S
Features
I REF
The RF2422 is a monolithic integrated quadrature modulator IC capable
of universal direct modulation for high-frequency AM, PM, or compound
carriers. This low-cost IC implements differential amplifiers for the modulation inputs, 90° carrier phase shift network, carrier limiting amplifiers,
two matched double-balanced mixers, summing amplifier, and an output
RF amplifier which will drive 50 from 800MHz to 2500MHz. Component
matching, which can only be accomplished with monolithic construction,
is used to full advantage to obtain excellent amplitude balance and phase
accuracy.
Ordering Information
RF2422
RF2422PCBA-41X
GaAs HBT
GaAs MESFET
InGaP HBT
2.5GHz Direct Quadrature Modulator
Fully Assembled Evaluation Board
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.
DS111219
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
www.BDTIC.com/RFMD
1 of 9
RF2422
Supply Voltage
Rating
Unit
-0.5 to +7.5
VDC
Input LO and RF Levels
+10
dBm
Operating Ambient Temperature
-40 to +85
°C
Storage Temperature
-40 to +150
°C
Parameter
Min.
Specification
Typ.
Max.
Carrier Input
Power Level
800
2500
-6
+6
Input VSWR
5:1
Unit
Condition
DC
Reference Voltage (VREF)
2.0
250
3.0
Maximum Modulation (I&Q)
0.2
Input Resistance
Input Bias Current
FO
R
RF Output
MHz
V
dB
3
°
30
k
NE
Quadrature Phase Error
-3
40
A
LO=2GHz and -5dBm, I&Q=2.0VPP, SSB
+3
dBm

50
3.5:1
At 900MHz
1.3:1
At 2000MHz
1.15:1
At 2500MHz
-30
-35
dBc
Sideband Suppression
25
35
dB
Carrier Suppression
30
35
dB
IM3 Suppression
30
35
dB
25
30
dB
NO
T
At 2500MHz
V
VREF ±1.0
Gain Asymmetry
MHz
dBm
At 1800MHz
W
Frequency Range
Harmonic Output
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.
DE
1.2:1
Modulation Input
Output VSWR
RoHS status based on EUDirective2002/95/EC (at time of this document revision).
At 900MHz
1.8:1
Output Power
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.
T=25°C, VCC =5V
Frequency Range
Output Impedance
Caution! ESD sensitive device.
SI
GN
S
Absolute Maximum Ratings
Parameter
Broadband Noise Floor
Intermodulation of the carrier and the desired
RF signal
Intermodulation of baseband signals
At 20MHz offset, VCC =5V.
Tied to VREF: ISIG, QSIG, IREF, and QREF.
-145
dBm/Hz
At 850MHz
-152
dBm/Hz
At 1900MHz
Power Down
Turn On/Off Time
PD Input Resistance
100
50
Power Control “ON”
Power Control “OFF”
2 of 9
2.8
1.0
ns
k
1.2
V
Threshold voltage
V
Threshold voltage
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
www.BDTIC.com/RFMD
DS111219
RF2422
Parameter
Min.
Specification
Typ.
Max.
Unit
Condition
Power Supply
Voltage
5
4.5
45
Specifications
6.0
V
Operating Limits
50
mA
Operating
25
A
Power Down
NO
T
FO
R
NE
W
DE
SI
GN
S
Current
V
DS111219
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
www.BDTIC.com/RFMD
3 of 9
RF2422
4
5
6
GND2
GND2
LO
7
VCC1
8
PD
RF OUT
NO
T
9
10
GND3
11
VCC2
12
GND1
13
14
15
GND1
GND1
Q SIG
4 of 9
I REF
100 
100 
425 
Reference voltage for the Q mixer. This voltage should be the same as the
DC voltage supplied to the Q SIG pin. A voltage of 3.0V is recommended.
425 
Q SIG
Q REF
100 
SI
GN
S
GND2
I SIG
100 
425 
425 
Ground connection of the LO phase shift network. This pin should be connected directly to the ground plane.
Same as pin 3.
Same as pin 3.
The input of the phase shifting network. This pin has an internal DC-blocking capacitor. At frequencies higher than 2GHz this port is well-matched to
50. This port is voltage driven so matching at lower frequencies is not
required.
Power supply for all circuits except the RF output stage. An external capacitor is needed if no other low frequency bypass capacitor is nearby.
Power Down control. When this pin is "low", all circuits are shut off. A "low"
is typically 1.2V or less at room temperature.When this pin is "high" (VCC),
all circuits are operating normally. If PD is below VCC, output power and
performance will be degraded. Operating in this region is not recommended, although it might be useful in some applications where power
control is required.
This is the 50 RF Output. This pin has an internal DC-blocking capacitor.
At frequencies higher than 2GHz this port is well-matched. Typical impedances at lower frequencies are: 24-j30  @ 1GHz, 27-j10  @ 1.4GHz, 31j3  @ 1.8GHz. At those frequencies, external matching may be needed to
optimize output power.
LO
V CC
   
PD
FO
R
3
Interface Schematic
DE
Q REF
Description
Reference voltage for the I mixer. This voltage should be the same as the
DC voltage supplied to the I SIG pin. A voltage of 3.0V is recommended.
The SIG and REF inputs are inputs of a differential amplifier. Therefore the
REF and SIG inputs are interchangeable. If swapping the I SIG and I REF
pins, the Q SIG and Q REF also need to be swapped to maintain the correct
phase. It is also possible to drive the SIG and REF inputs in a balanced
mode. This will increase the gain.
W
2
Function
I REF
NE
Pin
1
RF OUT
Ground connection for the RF output stage. This pin should be connected
directly to the ground plane.
Power supply for the RF Output amplifier. An external capacitor is needed if
no other low frequency bypass capacitor is near by.
Ground connection for the LO and baseband amplifiers, and for the mixers.
This pin should be connected directly to the ground plane.
Same as pin 12.
Same as pin 12.
Baseband input to the Q mixer. This pin is DC-coupled. Maximum output
power is obtained when the input signal has a peak to peak amplitude of
2V. The recommended DC level for this pin is 3.0V. The peak minimum
voltage on this pin (VREF - peak modulation amplitude) should never drop
below 2.0V. The peak maximum voltage on this pin (VREF + peak modulation amplitude) should never exceed 4.0V.
See pin 2.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
www.BDTIC.com/RFMD
DS111219
RF2422
Pin
16
Function
I SIG
Description
Interface Schematic
Baseband input to the I mixer. This pin is DC-coupled. Maximum output
power is obtained when the input signal has a peak to peak amplitude of
2V. The recommended DC level for this pin is 3.0V. The peak minimum
voltage on this pin (VREF - peak modulation amplitude) should never drop
below 2.0V. The peak maximum voltage on this pin (VREF + peak modulation amplitude) should never exceed 4.0V.
See pin 1.
Package Drawing
-A0.157
0.150
SI
GN
S
0.008
0.004
0.018
0.014
0.393
0.386
DE
0.050
0.068
0.053
8° MAX
0° MIN
W
0.244
0.229
0.009
0.007
NO
T
FO
R
NE
0.034
0.016
NOTES:
1. Shaded lead is Pin 1.
2. All dimensions are excluding
mold flash.
3. Lead coplanarity - 0.005 with
respect to datum "A".
DS111219
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
www.BDTIC.com/RFMD
5 of 9
RF2422
Application Schematic
AC-Coupled
VREF
C
R
R
R
R
I SIG
16
1
C
Q SIG
15
2
C
S
4
LO IN
100 nF
13
12
5
VCC
6
SI
GN
S
14
3
-45°
+45°
PD
100 nF
POWER
CONTROL
DE
8
11
10
7
VCC
100 nF
9
RF OUT
NO
T
FO
R
NE
W
NOTE:
The values of R and C depend on the minimum
baseband frequency (i.e., the cutoff frequency of
this high pass filter should be lower than the
lowest frequency component in the I/Q spectrum).
6 of 9
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
www.BDTIC.com/RFMD
DS111219
RF2422
Application Schematic
DC-Coupled
VREF
16
I SIG
2
15
Q SIG
3
14

4
LO IN
13
SI
GN
S
100 nF
1
5
12
VCC
6
100 nF
VCC
11
-45°
+45°
7
100 nF
10
POWER
CONTROL
DE
8
PD
RF OUT
W
100 nF
9
NE
Evaluation Board Schematic
1.5” x 1.5”
P2
P1
FO
R
P1-1
NC
NO
T
P2-1
C1
100 nF
1
VCC
2
GND
P2-1
NC
3
REF
2
GND
3
50  strip
1
16
2
15
3
14
4

5
J1
LO IN
1
50  strip
J4
I SIG
J3
Q SIG
13
12
50  strip
6
-45°
P1-1
7
C2
100 nF
8
POWER
CONTROL
P1-1
11
10
C3
100 nF
9
50  strip
+45°
J2
RF OUT
2422400A
DS111219
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
www.BDTIC.com/RFMD
7 of 9
RF2422
Evaluation Board Layout
Board Size 1.510” x 1.510”
NO
T
FO
R
NE
W
DE
SI
GN
S
Board Thickness 0.031”, Board Material FR-4
8 of 9
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
www.BDTIC.com/RFMD
DS111219
RF2422
RoHS* Banned Material Content
Bill of Materials
Die
Molding Com pound
Lead Fram e
Die Attach Epoxy
Wire
Solder Plating
Yes
0.147
0520
Rev e3
Pb
0
0
0
0
0
0
Parts Per Million (PPM)
Hg
Cr VI
0
0
0
0
0
0
0
0
0
0
0
0
Cd
0
0
0
0
0
0
PBB
0
0
0
0
0
0
SI
GN
S
RoHS Compliant:
Package total w eight in gram
Compliance Date Code:
Bill of Materials Revision:
Pb Free Category:
PBDE
0
0
0
0
0
0
DE
This RoHS banned m aterial content declaration w as prepared solely on inform ation, including analytical data,
provided to RFMD by its suppliers, and applies to the Bill of Materials (BOM) revision noted above.
NO
T
FO
R
NE
W
* DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 27 January 2003 on the restriction of
the use of certain hazardous substances in electrical and electronic equipment
DS111219
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
www.BDTIC.com/RFMD
9 of 9