RFMD RF2460PCBA-41X

RF2460
PCS CDMA LOW NOISE AMPLIFIER/MIXER
1500MHz TO 2200MHz DOWNCONVERTER
„
„
„
„
„
NC
LNA GAIN
MIX GAIN
*
15
LNA OUT
VCC1
2
14
ISET1
VCC2
3
13
ISET2
LO IN
4
12
MIX IN
NC
5
11
LNA2 E
6
7
8
9
10
NC
1
*
CDMA PCS Handsets
GPS Receiver
W-CDMA Handsets
General Purpose Downconverter
Commercial and Consumer
Systems
Portable Battery-Powered
Equipment
16
ENABLE
Applications
„
17
IF-
„
18
NC
„
19
IF+
„
Complete Receiver Front-End
Stepped LNA/Mixer Gain Control
Adjustable LNA/Mixer Bias
Current
24dB Gain and 2.2dB Noise
Figure at Maximum Cascade
Gain
20
NC
„
*
NC
Features
LNA IN
RoHS Compliant & Pb-Free Product
Package Style: QFN, 20-Pin, 4x4
*
*
Represents "GND".
Functional Block Diagram
Product Description
The RF2460 is a receiver front-end designed for the receive section of PCS
CDMA and W-CDMA applications. It is designed to amplify and downconvert RF signals while providing 29dB of stepped gain control range and
features digital control of LNA gain, mixer gain, and power down mode. A
further feature of the chip is adjustable IIP3 of the LNA and mixer using an
off-chip current setting resistor. Noise Figure, IP3, and other specs are
designed to be compatible with the IS-98B for CDMA PCS communications. The IC is manufactured on an advanced Silicon Germanium BiCMOS process and is assembled in a 20-pin, QFN package with an
exposed die flag.
Ordering Information
RF2460
RF2460PCBA-41X
PCS CDMA Low Noise Amplifier/Mixer 1500MHz to 2200MHz
Downconverter
Fully Assembled Evaluation Board
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
9SiGe 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.
Rev B6 DS080128
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
1 of 26
RF2460
Absolute Maximum Ratings
Parameter
Supply Voltage
Input LO and RF Levels
Rating
Unit
-0.5 to +5.0
VDC
+6
dBm
Operating Ambient Temperature
-40 to +85
°C
Storage Temperature
-40 to +150
°C
Parameter
Min.
Specification
Typ.
Max.
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.
RoHS status based on EUDirective2002/95/EC (at time of this document revision).
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.
Unit
Condition
T = 25°C, VCC =2.75V, RF=1.96GHz,
LO=2170MHz@-7dBm, IF=210MHz
Overall
RF Frequency Range
1500 to 2200
MHz
LO Frequency Range
1200 to 2600
MHz
IF Frequency Range
0.1 to 250
MHz
Bias Current
2.5
2.8
mA
LNA, mixer and preamp for bias circuitry.
US PCS - LNA
Gain
13.5
Noise Figure
Input IP3
15.0
1.4
+6.0
dB
1.8
+7.0
Input VSWR
dB
dBm
IIP3 is adjustable (see plots for setting). ISET1
(pin 14) external resistor sets current consumption and performance.
2:1
Output VSWR
2:1
Current at Input IP3
7
7.5
mA
US PCS - LNA Bypass
Gain
-6
Noise Figure
Input IP3
-5
5
+23.0
dB
5.5
+26.0
Input VSWR
dB
dBm
2:1
Output VSWR
2:1
Current
0
mA
US PCS - Mixer - High Gain
Mode
Gain
1kΩ balanced load.
10
Noise Figure
Input IP3
RF to IF Isolation
12
6.5
+3.0
dB
7.5
dBm
>45
dB
Input VSWR
2:1
Output VSWR
2:1
Current
2 of 26
dB
+4.0
12
13
IIP3 is adjustable (see plots for setting).
ISET2 (pin 13) external resistor sets current
consumption and performance.
mA
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
Parameter
Min.
Specification
Typ.
Max.
Unit
US PCS - Mixer - Low Gain
Mode
Condition
1kΩ balanced load.
Gain
0
1.5
+13.0
+14.0
dBm
>45
dB
Noise Figure
15
Input IP3
RF to IF Isolation
dB
16
Input VSWR
2:1
Output VSWR
2:1
Current
7.5
8.0
dB
IIP3 is adjustable
ISET2 (pin 13) external resistor sets current
consumption and performance.
mA
KPCS - LNA
Gain
14.5
Noise Figure
16.0
1.4
Input IP3
+5.0
dB
1.8
+6.0
Input VSWR
dB
dBm
IIP3 is adjustable (see plots for setting). ISET1
(pin 14) external resistor sets current consumption and performance.
2:1
Output VSWR
2:1
Current at Input IP3
7
7.5
mA
KPCS - LNA Bypass
Gain
-6
Noise Figure
-5
5.0
Input IP3
+23.0
dB
5.5
+26.0
Input VSWR
dB
dBm
2:1
Output VSWR
2:1
Current
0
mA
KPCS - Mixer - High Gain
Mode
1kΩ balanced load.
Gain
10
Noise Figure
12
6.5
Input IP3
+2.5
RF to IF Isolation
dB
7.5
dBm
>45
dB
Input VSWR
2:1
Output VSWR
2:1
Current
dB
+3.5
12
13
1kΩ balanced load.
0
1.5
+13.0
+14.0
dBm
>45
dB
Noise Figure
Input IP3
RF to IF Isolation
15
Input VSWR
Rev B6 DS080128
dB
16
dB
IIP3 is adjustable
ISET2 (pin 13) external resistor sets current
consumption and performance.
2:1
Output VSWR
Current
ISET2 (pin 13) external resistor sets current
consumption and performance.
mA
KPCS - Mixer - Low Gain Mode
Gain
IIP3 is adjustable (see plots for setting).
2:1
7.5
8.0
mA
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
3 of 26
RF2460
Parameter
Min.
Specification
Typ.
Max.
Unit
Condition
GPS - LNA
Gain
16
dB
Noise Figure
1.4
dB
Input IP3
+7.0
dBm
7
mA
Gain
17
dB
Noise Figure
6
dB
Input IP3
-5.0
dBm
Current at Input IP3
16
mA
Gain
31
dB
Noise Figure
1.8
dB
-19.0
dBm
23
mA
Current at Input IP3
IIP3 is adjustable. ISET1 (pin 14) external resistor sets current consumption and performance.
GPS - Mixer
IIP3 is adjustable. ISET1 (pin 14) external resistor sets current consumption and performance.
GPS - Cascaded
Input IP3
Current at Input IP3
IIP3 is adjustable. ISET1 (pin 14) external resistor sets current consumption and performance.
Local Oscillator Input
Input Level
-10
-7
0
dBm
LO to RF Isolation
>40
dB
Any gain state.
LO to LNA Isolation
>60
dB
Any gain state.
LO Current Buffer
4.5
5.0
mA
US PCS - Cascade LNA High/Mixer High
Gain
24
dB
Noise Figure
2.2
dB
Input IP3
-8.0
dBm
Total Current
26
mA
US PCS - Cascade LNA High/Mixer Low
13.5
dB
Noise Figure
5.3
dB
Input IP3
+1.0
dBm
21
mA
US PCS - Cascade LNA Low/Mixer High
Gain
Noise Figure
Input IP3
Total Current
4 of 26
IF 1, 1kΩ balanced load.
Single sideband.
LNA High Gain/Mixer Low Gain
Assuming 3dB loss of filter
Gain
Total Current
ICC2 when LO signal is present
LNA High Gain/Mixer High Gain
Assuming 3dB loss of filter
IF 1, 1kΩ balanced load.
Single sideband.
LNA Low Gain/Mixer High Gain
Assuming 3dB loss of filter
4
dB
14.5
dB
+12.0
dB
19
mA
IF 1, 1kΩ balanced load.
Single sideband.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
Parameter
Min.
Specification
Typ.
Max.
Unit
US PCS - Cascade LNA Low/Mixer Low
Condition
LNA Low Gain/Mixer Low Gain
Assuming 3dB loss of filter
Gain
-6.5
Noise Figure
Input IP3
Total Current
dB
23
dB
+20.5
dB
14
mA
KPCS - Cascade LNA High/Mixer High
IF 1, 1kΩ balanced load.
Single sideband.
LNA High Gain/Mixer High Gain
Assuming 3dB loss of filter
Gain
25
dB
Noise Figure
2.2
dB
Input IP3
-9.5
dBm
Total Current
26
mA
KPCS - Cascade LNA High/Mixer Low
IF 1, 1kΩ balanced load.
Single sideband.
LNA High Gain/Mixer Low Gain
Assuming 3dB loss of filter
Gain
14.5
dB
Noise Figure
5.3
dB
Input IP3
+1.0
dBm
21
mA
Total Current
KPCS - Cascade LNA Low/Mixer High
IF 1, 1kΩ balanced load.
Single sideband.
LNA Low Gain/Mixer High Gain
Assuming 3dB loss of filter
Gain
Noise Figure
Input IP3
Total Current
4
dB
14.5
dB
+12.0
dB
19
mA
KPCS - Cascade LNA Low/Mixer Low
IF 1, 1kΩ balanced load.
Single sideband.
LNA Low Gain/Mixer Low Gain
Assuming 3dB loss of filter
Gain
-6.5
dB
Noise Figure
23
dB
Input IP3
+22
dB
14
mA
Total Current
IF 1, 1kΩ balanced load.
Single sideband.
Power Supply
Voltage
Rev B6 DS080128
2.7
3.0
3.3
V
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
5 of 26
RF2460
Pin
1
Function
ENABLE
2
VCC1
3
VCC2
4
5
LO IN
NC
6
NC
7
IF+
8
NC
9
10
IFNC
11
LNA2 E
12
MIX IN
13
ISET2
14
ISET1
15
16
LNA OUT
MIX GAIN
17
LNA GAIN
18
NC
19
NC
6 of 26
Description
Interface Schematic
Power down pin. A logic “low” turns the part off. A logic “high” (>1.6V)
turns the part on.
Supply Voltage for the LNA, mixer, bias, and logic circuitry. External RF and See pin 20.
IF bypassing is required. The trace length between the pin and the bypass
capacitors should be minimized. The ground side of the bypass capacitors
should connect immediately to ground plane.
Supply Voltage for the LO buffer amplifier. External RF and IF bypassing is
required. The trace length between the pin and the bypass capacitors
should be minimized. The ground side of the bypass capacitors should connect immediately to ground plane.
Mixer LO Input Pin.
No connection. For isolation purposes, this pin is connected to the ground
plane.
No connection. For isolation purposes, this pin is connected to the ground
plane.
CDMA IF Output pin. This is a balanced output. The internal circuitry, in
conjunction with an external matching/bias inductor to VCC, sets the operating impedance. This inductor is typically incorporated in the matching
network between the output and IF filter. The part is designed to drive a
1kΩ load. Because this pin is biased to VCC, a DC blocking capacitor must
be used if the IF filter input has a DC path to ground. See Application Schematic.
No connection. For isolation purposes, this pin is connected to the ground
plane.
Same as pin 7, except complementary output.
IF1+
1.2 pF
IF1-
1.2 pF
See pin 6.
No connection. For isolation purposes, this pin is connected to the ground
plane.
Emitter for LNA2. Increasing the inductance on this pin will reduce the
mixer gain, increase IP3 and noise figure.
Mixer RF Input Pin. This pin is internally DC biased and should be DC
blocked if connected to a device with DC present. External matching network sets RF and IF impedance for optimum performance.
This pin is used to set the bias current and IIP3 of the mixer amplifier using
a resistor to ground. See plots for values and current settings.
This pin is used to set the bias current and IIP3 of the LNA amplifier using a
resistor to ground. See plots for values and current settings.
LNA output pin. Open collector.
GND2
M IX IN
See pin 20.
CMOS compatible signal controlling mixer gain mode. Setting this signal
high places the mixer in the high gain mode. Setting this signal low places
the mixer in low gain mode by bypassing and shutting off the mixer buffer
amplifier current.
CMOS compatible signal controlling LNA gain mode. Setting this signal high
places the LNA in the high gain mode. Setting this signal low bypasses the
LNA and shuts off the LNA bias current.
MIX GAIN
LNA GAIN
No connection. For isolation purposes, this pin is connected to the ground
plane.
No connection. For isolation purposes, this pin is connected to the ground
plane.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
Pin
20
Function
LNA IN
Description
Interface Schematic
RF Input pin. This pin is internally matched for optimum noise figure from a
50Ω source.
VCC1
LNA OUT
LNA IN
Pkg
Base
GND
Ground connection. The backside of the package should be soldered to a
top side ground pad which is connected to the ground plane with multiple
vias.
Package Drawing
0.15 C A
-A-
0.05 C
1.00
0.90
2 PLCS
4.00
0.05
2 PLCS
0.15 C B
3.75
4.00
Dimensions in mm.
12°
MAX
0.15 C
2 PLCS
-B-
-C-
3.75
0.15 C
2 PLCS
Note orientation of package.
0.10 M C A B
0.20
NOTES:
1 Shaded lead is Pin 1.
Dimension applies to plated terminal:
2
to be measured between 0.02 mm and
0.25 mm from terminal end.
2
0.65
0.30
0.60
0.24 TYP
4 PLCS
2.10 SQ.
0.75
0.50
0.23
0.13
4 PLCS
0.50
Rev B6 DS080128
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
7 of 26
RF2460
Output Interface Network of the Mixer
L1, C1, C2, and R form a current combiner which performs a differential to single-ended conversion at the IF frequency and
sets the output impedance. In most cases, the resonance frequency is independent of R and can be set according to the following equation:
1
f IF = ----------------------------------------------------------L1
2π ------ ( C 1 + 2C 2 + C EQ )
2
Where CEQ is the equivalent stray capacitance and capacitance looking into pins 7 and 9. An average value to use for CEQ is
2.5pF.
R can then be used to set the output impedance according to the following equation:
1 –1
1
R = ⎛ --------------------- – ------⎞
⎝ 4 ⋅ R OUT R P⎠
where ROUT is the desired output impedance and RP is the parasitic equivalent parallel resistance of L1.
C2 should first be set to 0 and C1 should be chosen as high as possible (suggested less than 20pF), while maintaining an RP
of L1 that allows for the desired ROUT. If the self-resonant frequencies of the selected C1 produce unsatisfactory linearity performance, their values may be reduced and compensated for by including C2 capacitor with a value chosen to maintain the
desired FIF frequency.
L2 and C3 serve dual purposes. L2 serves as an output bias choke, and C3 serves as a series DC block.
In addition, L2 and C3 may be chosen to form an impedance matching network if the input impedance of the IF filter is not
equal to ROUT. Otherwise, L2 is chosen to be large (suggested 120nH) and C3 is chosen to be large (suggested 22nF) if a DC
path to ground is present in the IF filter, or omitted if the filter is DC blocked.
8 of 26
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
Application Schematic - US PCS
LNA GAIN
MIX GAIN
VCC1
10 Ω
0.1 μF
LNA IN
510 Ω
19 nH
0.1 μF
10 nH
*
ENABLE
20
19
18
17
16
*
2 nH
VCC1
VCC2
1
15
2
14
22 pF
LNA OUT
18 kΩ
3
13
4
12
5
11
9.1 kΩ
LO IN
7.5 nH
MIX IN
82 Ω
*
6
7
8
9
10
*
0.1 μF
47 nH
1 nH
* Represents "GND".
C2
C1
C1
VCC1
VCC2
L1
C3
0.1 μF
VCC1
L2
R
0.1 μF
C4
0.1 μF
C3 and C4 should be placed as
closely as possible to pins 2 and 3
C3
IF OUT
C1 (pF)
C2 (pF)
C3 (pF)
L1 (nH)
L2 (nH)
US PCS, IF = 210 MHz
Korean PCS, IF = 220 MHz
4
3.6
3
2
6
7
82
82
110
120
GPS, IF = 184 MHz
8.2
DNI
6.2
120
180
10 k
8
3
6
82
110
4.7 k
US PCS, IF = 184 MHz
Rev B6 DS080128
R (Ω)
4.7 k
4.7 k
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
9 of 26
RF2460
Application Schematic - W-CDMA
(See W-CDMA charts for lab measurements at the end of the data sheet)
LNA_GAIN
MIX_GAIN
50 Ω μstrip
C2
0.1 μF
R5
10 Ω
VCC1
50 Ω μstrip
LNA IN
L8
19 nH
L1
10 nH
*
20
19
18
17
16
*
ENABLE
1
15
VCC1
2
14
VCC2
3
13
L2
7.5 nH
R1
82 Ω
R3
9.1 kΩ
6
7
8
50 Ω μstrip
MIX IN
L6
47 nH
50 Ω μstrip
R2
DNI
50 Ω μstrip
VCC1
C5
0.1 μF
9
10
L5
1.0 nH
*
P2
50 Ω μstrip
C8
4.3 pF
L4
82 nH
L3
150 nH
C10
0.1 μF
11
50 Ω μstrip
C7
4.3 pF
50 Ω μstrip
12
5
*
C11
22 pF
LNA OUT
50 Ω μstrip
4
C12
0.1 μF
R6
18 kΩ
50 Ω μstrip
LO IN
L7
2.0 nH
50 Ω μstrip
R4
510 Ω
C6
5.6 pF
50 Ω μstrip
C9
4.3 pF
50 Ω μstrip
P2-1
1
ENABLE
P2-1
2
LNA_GAIN
P2-3
3
MIX_GAIN
CON3
P1
VCC1
VCC2
P1-1
+ C1
1 μF
C3
0.1 μF
C4
0.1 μF
P1-3
1
VCC1
2
GND
3
C13 + CON3
1 μF
C2 and C3 should be placed as
closely as possible to pins 2 and 3
RF2460PCBA-U WCDMA
RF @ 2.14 GHz, LO @ 2.33 GHz, IF @ 190 MHz
IF=190 MHz
IF OUT
10 of 26
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
Application Schematic - GPS
RF=1575MHz, IF=184MHz, LO=1759MHz
LNA GAIN
50 Ω μstrip
50 Ω μstrip
47 nF
LNA IN
MIX GAIN
VCC1
5Ω
12 nH
50 Ω μstrip
12 nH
***439 pS electrical delay***
***0.33 dB line loss***
*
20
19
18
17
16
0.1 uF
***359 pS electrical delay***
***0.23 dB line loss***
*
1.2 nH
ENABLE
VCC1
1
15
2
14
3
13
4
12
5
11
50 Ω μstrip
33 nF
LNA OUT
50 Ω μstrip
***C2 & C3 should be placed as
close as possible to pins 2 & 3***
18 kΩ
VCC2
13 kΩ
***390 pS electrical delay***
***0.28 dB line loss***
50 Ω μstrip
LO IN
*
68 Ω
6
7
8
50 Ω μstrip
8.2 pF
9
10
***397 pS electrical delay***
***0.26 dB line loss***
0.1 uF
50 Ω μstrip
MIX IN
50 Ω μstrip
50 Ω μstrip
*
50 Ω μstrip
50 Ω μstrip
50 Ω μstrip
47 nH
8.2 pF
*
Represents "GND".
120 nH
VCC1
180 nH
50 Ω μstrip
0.1 uF
10 kΩ
6.2 pF
***323 pS electrical delay***
***0.03 dB line loss***
50 Ω μstrip
IF OUT
Rev B6 DS080128
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
11 of 26
RF2460
Current Measurement
To measure only the current of the different circuitry in the evaluation board, use the following procedure.
First, replace the bias choke inductor at the output of the mixer (L3 for US-PCS) with a 1Ω resistor. The voltage across the resistor will represent the mixer current. Terminate all SMA connections at 50Ω.
Second, follow the table below.
CONDITION
Current (mA)
VCC1
VCC2
EN
LNA Gain
Mix Gain
25.82
1
1
1
1
1
LNA Off
18.77
1
1
1
0
1
Mixer Preamp Off
14.28
1
1
1
0
0
VCC2 Off
10.05
1
0
1
0
0
7.72
1
0
1
0
0
ICC Total
Mixer Current
Therefore,
LNA (Bypass)
=
(Computer Simulation)
=
0mA
LNA (High Gain)
=
25.82-18.77
=
7.05mA
Mixer (Preamp)
=
18.77-14.28
=
4.49mA
Mixer
=
(Measured)
=
7.70mA
Bias
=
10.05-7.7
=
2.35mA
LO Circuitry (VCC2)
=
14.28-10.05
=
4.23mA
25.82mA
12 of 26
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
Evaluation Board Schematic
US-PCS, IF=210MHz
J1
LNA IN
C2
1 pF
R5
20 Ω
C3
0.1 μF
***400 pS electrical delay***
***0.30 dB line loss***
L1
1.6 nH
*
VCC1
***C4 and C5 should be placed as
close as possible to pins 2 and 3***
C4
0.1 μF
VCC1
C5
0.1 μF
***396 pS electrical delay***
***0.30 dB line loss***
J2
LO IN
L3
9 nH
R1
68 Ω
20
19
18
17
16
*
1
15
2
14
3
13
4
12
5
11
*
6
7
8
9
10
*
VCC1
R4
510 Ω
L9
8.2 nH
L2
10 nH
ENABLE
LNA GAIN
MIX GAIN
C13
0.1 μF
C12
22 pF
L8
2.2 nH
***358 pS electrical delay***
***0.26 dB line loss***
J5
LNA OUT
R6
24 kΩ
R3
7.5 kΩ
***399 pS electrical delay***
***0.32 dB line loss***
C11
0.1 μF
L6
1 nH
J4
MIX IN
L7
47 nH
2460310, Rev. 5
C8
3.6 pF
L4
120 nH
C9
2 pF
L5
82 nH
VCC1
* Represents "GND".
C1
0.1 μF
P1-1
C6
0.1 μF
J3
IF OUT
C10
3.6 pF
***291 pS electrical delay***
***0.05 dB line loss***
Rev B6 DS080128
C7
7 pF
R2
4.7 kΩ
P1-3
C14
0.1 μF
P1
P2
1
VCC1
P2-1
1
ENABLE
2
GND
P2-2
2
LNA GAIN
3
VCC2
P2-3
3
MIX GAIN
CON3
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
CON3
13 of 26
RF2460
Evaluation Board Schematic
Korean-PCS, IF=220MHz
J1
LNA IN
C2
1 pF
R5
20 Ω
C3
0.1 μF
***400 pS electrical delay***
***0.30 dB line loss***
L1
1.6 nH
*
VCC1
***C4 and C5 should be placed as
close as possible to pins 2 and 3***
C4
0.1 μF
VCC1
C5
0.1 μF
***396 pS electrical delay***
***0.30 dB line loss***
J2
LO IN
L3
9 nH
R1
68 Ω
20
19
18
17
16
*
1
15
2
14
3
13
4
12
5
11
*
6
7
8
9
10
*
VCC1
R4
510 Ω
L9
8.2 nH
L2
10 nH
ENABLE
LNA GAIN
MIX GAIN
C13
0.1 μF
C12
22 pF
L8
2.2 nH
***358 pS electrical delay***
***0.26 dB line loss***
J5
LNA OUT
R6
24 kΩ
R3
7.5 kΩ
***399 pS electrical delay***
***0.32 dB line loss***
C11
0.1 μF
L6
1 nH
J4
MIX IN
L7
47 nH
2460310, Rev. 5
C8
3.6 pF
L4
120 nH
C9
2 pF
L5
82 nH
VCC1
14 of 26
* Represents "GND".
C1
0.1 μF
P1-1
C6
0.1 μF
J3
IF OUT
C10
3.6 pF
***291 pS electrical delay***
***0.05 dB line loss***
C7
7 pF
R2
4.7 kΩ
P1-3
C14
0.1 μF
P1
P2
1
VCC1
P2-1
1
ENABLE
2
GND
P2-2
2
LNA GAIN
3
VCC2
P2-3
3
MIX GAIN
CON3
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
CON3
Rev B6 DS080128
RF2460
Evaluation Board Layout - US PCS
Board Size 2.0" x 2.0"
Board Thickness 0.034”, Board Material FR-4, Multi-Layer
Rev B6 DS080128
Assembly
Top
Power Plane 1
Power Plane 2
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
15 of 26
RF2460
Back
16 of 26
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
Evaluation Board Layout - Korean PCS
Rev B6 DS080128
Assembly
Top
Power Plane 1
Power Plane 2
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
17 of 26
RF2460
Back
Special Instructions (Board loss, taking into consideration description in the schematic)
LNA
VCC1 =VCC2 =Enable=2.75V; Mix Gain=0.0V
To measure ICC LNA only:
LNA Gain was switched between 0V and 2.75V, and record the delta current.
Mixer
VCC1 =VCC2 =Enable=Mix Gain=2.75V; LNA Gain=0.0V
To measure ICC Mixer (LNA should be in bypass mode and LO signal should be present):
Mixer Current=Total IC Current-LO Circuitry (~4.23mA) (See “Current Measurement” section for more details)
VCC2 only affects LO current buffer and R6 doesn’t affect the mixer current.
Instructions (Board loss, taking into consideration description in the W-CDMA schematic)
LNA
ICC LNA current=total current (VCC =LNA Gain=2.75)-total current (VCC =2.75; LNA Gain=0)
To measure ICC LNA only:
LNA Gain was switched between 0V and 2.75V, and record the delta current.
Mixer
ICC Mix and Bias Current=Total Current (VCC1 =EN=VCC2 =Mix Gain=2.75; LNA Gain=0)-total current (VCC1 =EN=2.75; Mix
Gain=LNA Gain=VCC2 =0)
LO signal should be present. VCC2 only affects LO current buffer and R6 doesn’t affect the mixer current.
18 of 26
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
U
S
- P
C
S
LNA Gain, Noise Figure and IIP3 versus ICC - LNA Only
Resistor (R6) versus ICC (mA) - LNA Only
(LNA High Gain)
18.0
15.0
(LNA High Gain)
200.0
180.0
16.0
10.0
160.0
14.0
10.0
0.0
8.0
Gain (dB)
NF (dB)
6.0
Resistor R6 (kΩ)
5.0
IIP3 (dBm)
Y Axis Label (units)
140.0
12.0
120.0
100.0
80.0
-5.0
60.0
IIP3 (dBm)
4.0
40.0
-10.0
2.0
20.0
0.0
-15.0
1.0
3.0
5.0
7.0
9.0
11.0
13.0
0.0
15.0
1.0
3.0
5.0
7.0
X Axis Label (units)
25.0
Mixer Gain, Noise Figure and IIP3 versus ICC - Mixer
(Mixer High Gain, LO = -7 dBm)
10.0
11.0
13.0
15.0
Resistor (R3) versus ICC - Mixer
(Mixer High Gain, LO = 2170 @ -7 dBm)
180.0
20.0
160.0
5.0
140.0
0.0
5.0
0.0
-5.0
-5.0
IIP3 (dBm)
10.0
Resistor R3 (kΩ)
15.0
Gain and Noise Figure (dB)
9.0
ICC (mA)
120.0
100.0
80.0
60.0
Gain (dB)
-10.0
NF (dB)
IIP3 (dBm)
-10.0
-15.0
40.0
20.0
-20.0
-15.0
2.0
4.0
6.0
8.0
10.0
ICC (mA)
12.0
14.0
16.0
18.0
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
ICC (mA)
By using a R6=39kΩ and R3=24kΩ, the following results were obtained. RF=2140MHz, LO=2330MHz, IF=190MHz.
Rev B6 DS080128
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
19 of 26
RF2460
W -C D M A
(S e e W -C D M A A p p lic a tio n S c h e m a tic )
R6 versus ICC for LNA
LNA Gain, Noise Figure, and IIP3 versus ICC - LNA Only
(LNA High Gain)
90.0
20.00
2.00
80.0
1.80
70.0
1.40
60.0
10.00
1.20
5.00
1.00
0.80
0.00
R6 (mA)
1.60
Noise Figure (dB)
Gain (dB) and IIP3 (dBm)
15.00
50.0
40.0
30.0
0.60
20.0
Gain (dB)
-5.00
0.40
IIP3 (dBm)
-10.00
1.00
10.0
0.20
NF (dBm)
0.00
3.00
5.00
7.00
9.00
11.00
13.00
0.0
15.00
1.0
3.0
5.0
7.0
ICC (mA)
9.0
11.0
13.0
15.0
ICC (mA)
R3 versus ICC for Mixer and Bias Circuits
Mixer Gain, Noise Figure and IIP3 versus ICC - Mixer and
Bias Circuits (Mixer High Gain, LO=-7dBm)
14.00
40.0
12.00
35.0
12.00
8.00
4.00
6.00
2.00
0.00
4.00
15.0
Gain (dB)
-4.00
IIP3 (dBm)
-6.00
2.00
5.0
NF (dBm)
-8.00
0.00
6.50
7.00
7.50
8.00
ICC (mA)
20 of 26
20.0
10.0
-2.00
6.00
25.0
R3 (kΩ)
8.00
6.00
Noise Figure (dB)
Gain (dB) and IIP3 (dBm)
30.0
10.00
10.00
8.50
9.00
9.50
10.00
0.0
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
10.0
ICC (mA)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
LNA (High Gain Mode) WCDMA
LNA (High Gain Mode) W-CDMA
10.00
14.00
13.80
9.00
13.60
13.40
IIP3 (dBm)
Gain (dB)
8.00
13.20
13.00
12.80
6.00
Gain, -30º
12.60
7.00
Gain, 25º
12.40
Gain, 85º
IIP3, -30º
5.00
IIP3, 25º
12.20
IIP3, 85º
12.00
4.00
2.75
2.85
2.95
3.05
3.15
2.75
3.25
2.85
2.95
VCC (V)
3.05
3.15
3.25
3.35
VCC (V)
LNA (High Gain Mode) W-CDMA
LNA Current W-CDMA
2.50
4.35
4.30
4.25
4.20
1.50
ICC (mA)
Noise Figure (dB)
2.00
4.15
4.10
1.00
4.05
4.00
0.50
NF, -30º
Icc, -30º
NF, 25º
Icc, 25º
3.95
NF, 85º
Icc, 85º
0.00
2.75
3.90
2.85
2.95
3.05
VCC (V)
Rev B6 DS080128
3.15
3.25
3.35
2.75
2.85
2.95
3.05
3.15
3.25
3.35
VCC (V)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
21 of 26
RF2460
Mixer High Gain Mode,
Mixer High Gain Mode,
LO @ -7 dBm W-CDMA
14.00
11.00
13.00
10.50
12.00
10.00
Noise Figure (dB)
Gain (dB)
LO @ -7 dBm W-CDMA
11.00
10.00
Gain, -30º
9.00
9.50
9.00
NF, -30º
8.50
Gain, 25º
NF, 25º
Gain, 85º
NF, 85º
8.00
2.75
8.00
2.85
2.95
3.05
3.15
3.25
3.35
2.75
2.85
2.95
3.05
VCC (V)
Mixer High Gain Mode,
3.25
3.35
Mixer IF High Gain Mode,
VCC @ 2.75 W-CDMA
13.0
3.15
VCC (V)
VCC @ 2.75 W-CDMA
0.0
IIP3, -30º
12.5
IIP3, 25º
-0.5
IIP3, 85º
12.0
-1.0
11.0
IIP3 (dBm)
Gain (dB)
11.5
10.5
10.0
9.5
-1.5
-2.0
-2.5
9.0
Gain, -30º
-3.0
Gain, 25º
8.5
Gain, 85º
8.0
-10.0
-3.5
-9.0
-8.0
-7.0
-6.0
-5.0
-4.0
-10.0
-3.0
-9.0
-8.0
-7.0
LO (dBm)
Mixer IF High Gain Mode,
-4.0
-3.0
VCC @ 2.75 W-CDMA
6.2
6.1
ICC Mixer and Bias Current (mA)
10.5
Noise Figure (dB)
-5.0
Mixer IF High Gain Mode,
VCC @ 2.75 W-CDMA
11.0
-6.0
LO (dBm)
10.0
9.5
9.0
Icc, -30º
Icc, 25º
Icc, 85º
6.0
5.9
5.8
5.7
NF, -30º
8.5
5.6
NF, 25º
NF, 85º
8.0
-10.0
5.5
-8.0
-6.0
-4.0
LO (dBm)
22 of 26
-2.0
0.0
-10.0
-8.0
-6.0
-4.0
-2.0
0.0
LO (dBm)
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
Mixer IF High Gain Mode,
LO @ -7 dBm W-CDMA
7.50
ICC Mixer and Bias Circuit (mA)
7.00
6.50
6.00
Icc, -30º
5.50
Icc, 25º
Icc, 85º
5.00
2.75
2.85
2.95
3.05
3.15
3.25
3.35
VCC (V)
Rev B6 DS080128
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
23 of 26
RF2460
PCB Design Requirements
PCB Surface Finish
The PCB surface finish used for RFMD’s qualification process is electroless nickel, immersion gold. Typical thickness is 3μinch
to 8μinch gold over 180μinch nickel.
PCB Land Pattern Recommendation
PCB land patterns are based on IPC-SM-782 standards when possible. The pad pattern shown has been developed and tested
for optimized assembly at RFMD; however, it may require some modifications to address company specific assembly processes. The PCB land pattern has been developed to accommodate lead and package tolerances.
PCB Metal Land Pattern
A = 0.69 x 0.28 (mm) Typ.
B = 0.28 x 0.69 (mm) Typ.
C = 2.40 (mm) Sq.
Dimensions in mm.
2.00 Typ.
0.50 Typ.
Pin 20
B
B
B
B
B
Pin 1
0.50 Typ.
Pin 15
A
A
A
A
A
C
A
A
A
A
A
1.00 Typ.
2.00
Typ.
0.78 Typ.
B
B
B
B
B
Pin 10
0.78 Typ.
1.00
Figure 1. PCB Metal Land Pattern (Top View)
24 of 26
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128
RF2460
PCB Solder Mask Pattern
Liquid Photo-Imageable (LPI) solder mask is recommended. The solder mask footprint will match what is shown for the PCB
metal land pattern with a 2mil to 3mil expansion to accommodate solder mask registration clearance around all pads. The
center-grounding pad shall also have a solder mask clearance. Expansion of the pads to create solder mask clearance can be
provided in the master data or requested from the PCB fabrication supplier.
A = 0.79 x 0.38 (mm) Typ.
B = 0.38 x 0.79 (mm) Typ.
C = 2.50 (mm) Sq.
Dimensions in mm.
2.00 Typ.
0.50 Typ.
Pin 20
B
B
B
B
B
Pin 1
Pin 15
A
0.50 Typ.
A
A
A
A
C
A
A
A
A
A
1.00 Typ.
2.00
Typ.
0.78 Typ.
B
B
B
B
B
Pin 10
0.78 Typ.
1.00
Figure 2. PCB Solder Mask Pattern (Top View)
Thermal Pad and Via Design
The PCB land pattern has been designed with a thermal pad that matches the die paddle size on the bottom of the device.
Thermal vias are required in the PCB layout to effectively conduct heat away from the package. The via pattern has been
designed to address thermal, power dissipation and electrical requirements of the device as well as accommodating routing
strategies.
The via pattern used for the RFMD qualification is based on thru-hole vias with 0.203mm to 0.330mm finished hole size on a
0.5mm to 1.2mm grid pattern with 0.025mm plating on via walls. If micro vias are used in a design, it is suggested that the
quantity of vias be increased by a 4:1 ratio to achieve similar results.
Rev B6 DS080128
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
25 of 26
RF2460
RoHS* Banned Material Content
RoHS Compliant:
Yes
Package total weight in grams (g):
0.041
Compliance Date Code:
0629
Bill of Materials Revision:
-
Pb Free Category:
B i l l o f Ma te r i a l s
e3
Pa r ts Pe r Mi l l i o n (PPM)
Pb
Cd
Hg
Cr VI
PB B
PB DE
Di e
0
0
0
0
0
0
Mo l d i ng Co mp o und
0
0
0
0
0
0
Le a d F r a m e
0
0
0
0
0
0
Di e Atta ch Ep o x y
0
0
0
0
0
0
Wi r e
0
0
0
0
0
0
So l d e r Pl a ti ng
0
0
0
0
0
0
Thi s R o HS b a nne d ma te r i a l co nte nt de cl a r a ti o n wa s pr e p a r e d so l e l y o n i nfo r ma ti o n, i ncl ud i ng a na l y ti ca l
d a ta , pr o v i de d to R F MD b y i ts sup p l i e r s, a nd a pp l i e s to the B i l l o f M a te r i a l s (B OM) r e vi si o n no te d
* 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
26 of 26
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev B6 DS080128