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RF3396
0
RoHS Compliant & Pb-Free Product Typical Applications * Basestation Applications * Broadband, Low-Noise Gain Blocks * IF or RF Buffer Amplifiers Product Description
The RF3396 is a general purpose, low-cost RF amplifier IC. The device is manufactured on an advanced Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process, and has been designed for use as an easily-cascadable 50 gain block. Applications include IF and RF amplification in wireless voice and data communication products operating in frequency bands up to 6000MHz. The device is self-contained with 50 input and output impedances and requires only two external DC-biasing elements to operate as specified. The device is designed for cost effective high reliability in a plastic package. The 3mmx3mm footprint is compatible with standard ceramic and plastic Micro-X packages.
2 PLCS 0.10 C A
GENERAL PURPOSE AMPLIFIER
* Driver Stage for Power Amplifiers * Final PA for Low-Power Applications * High Reliability Applications
0.05 C
-A3
1
3.00
2 PLCS 0.10 C B
0.20 REF.
0.90 0.85 0.05 0.00
3.00
0.10 C B 2 PLCS
12 MAX SEATING PLANE
0.10 C A 2 PLCS
2.75 SQ
-B-
Dimensions in mm.
-C-
Shaded lead is pin 1.
0.10 M C A B
0.60 0.24 TYP
0.35 0.30 PIN 1 ID R0.20 1.90 1.60
0.45 0.35 0.375 0.275
1.15 0.85 0.65
Optimum Technology Matching(R) Applied
Si BJT Si Bi-CMOS InGaP/HBT GaAs HBT SiGe HBT GaN HEMT GaAs MESFET Si CMOS SiGe Bi-CMOS
Package Style: QFN, 12-Pin, 3x3
Features * DC to >6000MHz Operation * Internally Matched Input and Output * 22dB Small Signal Gain
GND
GND
GND
* +2.0dB Noise Figure * +11.5dBm Output P1dB
9 NC 8 RF OUT 7 NC
12 NC 1 RF IN 2 NC 3 4 GND
11
10
* Footprint Compatible with Micro-X
5 GND
6 GND
Ordering Information
RF3396 General Purpose Amplifier RF3396PCBA-41X Fully Assembled Evaluation Board
Functional Block Diagram
RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA
Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com
Rev A7 060907
4-599
RF3396
Absolute Maximum Ratings Parameter
Input RF Power Operating Ambient Temperature Storage Temperature ICC
Rating
+3 -40 to +85 -60 to +150 40
Unit
dBm C C mA
Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. RoHS marking based on EUDirective2002/95/EC (at time of this printing). However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s).
Parameter
Overall
Frequency Range 3dB Bandwidth Gain
Specification Min. Typ. Max.
DC to >6000 2 22.7 22.2 19.8 17.4 16.0 12.9 2.0 <1.9:1 <1.9:1 <1.4:1 +23.5 +24.0 +11.5 +11.5 22.5 335 122
Unit
MHz GHz dB dB dB dB
Condition
T=25 C, ICC =35mA (See Note 1.)
21.0 20.2 17.8
24.2 21.8
Noise Figure Input VSWR Output VSWR Output IP3 Output P1dB Reverse Isolation +21.5 +22.0 +9.5 +9.5
dB
dBm dBm dBm dBm dB C/W C
Thermal
ThetaJC Maximum Measured Junction Temperature at DC Bias Conditions Mean Time To Failures
Freq=500MHz Freq=850MHz Freq=2000MHz Freq=3000MHz Freq=4000MHz Freq=6000MHz Freq=2000MHz In a 50 system, DC to 6000MHz In a 50 system, DC to 3000MHz In a 50 system, 3000MHz to 6000MHz Freq=850MHz Freq=2000MHz Freq=850MHz Freq=2000MHz Freq=2000MHz ICC =35mA, PDISS =110mW. (See Note 3.) TAMB =+85C
TAMB =+85C With 22 bias resistor Device Operating Voltage 3.3 3.4 3.5 V At pin 8 with ICC =35mA 3.9 4.2 4.5 v At evaluation board connector, ICC =35mA Operating Current 35 40 mA See Note 2. Note 1: All specification and characterization data has been gathered on standard FR-4 evaluation boards. These evaluation boards are not optimized for frequencies above 2.5GHz. Performance above 2.5GHz may improve if a high performance PCB is used. Note 2: The RF3396 must be operated at or below 40mA in order to achieve the thermal performance listed above. While the RF3396 may be operated at higher bias currents, 35mA is the recommended bias to ensure the highest possible reliability and electrical performance. Note 3: Because of process variations from part to part, the current resulting from a fixed bias voltage will vary. As a result, caution should be used in designing fixed voltage bias circuits to ensure the worst case bias current does not exceed 40mA over all intended operating conditions.
17,635
years
Power Supply
4-600
Rev A7 060907
RF3396
Pin 1 2 Function NC RF IN Description
No internal connections. It is not necessary to ground this pin. RF input pin. This pin is NOT internally DC blocked. A DC blocking capacitor, suitable for the frequency of operation, should be used in most applications. DC coupling of the input is not allowed, because this will override the internal feedback loop and cause temperature instability. No internal connections. It is not necessary to ground this pin. Ground connection. Ground connection. Ground connection. No internal connections. It is not necessary to ground this pin. RF output and bias pin. Biasing is accomplished with an external series resistor and choke inductor to VCC. The resistor is selected to set the DC current into this pin to a desired level. The resistor value is determined by the following equation:
RF OUT
Interface Schematic
3 4 5 6 7 8
NC GND GND GND NC RF OUT
( V SUPPLY - V DEVICE ) R = -----------------------------------------------------I CC
Care should also be taken in the resistor selection to ensure that the current into the part never exceeds 40mA over the planned operating temperature. This means that a resistor between the supply and this pin is always required, even if a supply near 3.4V is available, to provide DC feedback to prevent thermal runaway. Because DC is present on this pin, a DC blocking capacitor, suitable for the frequency of operation, should be used in most applications. The supply side of the bias network should also be well bypassed. No internal connections. It is not necessary to ground this pin. Ground connection. Ground connection. Ground connection. Ground connection. To ensure best performance, avoid placing ground vias directly beneath the part.
RF IN
9 10 11 12 Die Flag
NC GND GND GND GND
Rev A7 060907
4-601
RF3396
Application Schematic
VCC
10 nF
22 pF
47 nH 12 1 22 pF RF IN 2 3 4 5 6 8 22 pF 7 11 10 9 RBIAS RF OUT
Evaluation Board Schematic
(Download Bill of Materials from www.rfmd.com.)
P1 P1-1 1 2 P1-3 3 CON3 12 C1 100 pF 1 2 3 4 5 6 11 10 9 8 7 VCC GND NC R1 22 L1 100 nH C3 100 pF C4 1 F VCC P1-1
J1 RF IN
50 strip
C2 100 pF
50 strip
J2 RF OUT
NOTE: Evaluation board optimized for frequencies above 300 MHz and below 2.5 GHz. For operation below 300 MHz the value of inductor L1 and capcitors C1 and C2 should be increased.
4-602
Rev A7 060907
RF3396
Evaluation Board Layout Board Size 1.195" x 1.000"
Board Thickness 0.033", Board Material FR-4
Note: A small amount of ground inductance is required to achieve datasheet performance. The necessary inductance may be generated by ensuring that no ground vias are placed directly below the footprint of the part.
Overlay of Suggested Micro-X and 3mmx3mm Layouts Showing Compatibility
Rev A7 060907
4-603
RF3396
Gain versus Frequency Across Temperature
24.0
Output P1dB versus Frequency Across Temperature
14.0
ICC=35mA
-40C
ICC=35mA
22.0
+25C +85C
12.0
20.0
10.0
18.0
Output P1dB (dBm)
Gain (dB)
8.0
16.0
6.0
14.0
4.0 -40C
12.0
2.0
+25C +85C
10.0 100.0 1100.0 2100.0 3100.0 4100.0 5100.0 6100.0
0.0 100.0 600.0 1100.0 1600.0 2100.0 2600.0 3100.0 3600.0 4100.0
Frequency (MHz)
Frequency (MHz)
Output IP3 versus Frequency Across Temperature
28.0 26.0 24.0 22.0
Noise Figure versus Frequency Across Temperature
5.0 -40C 4.5 +25C +85C 4.0
ICC=35mA
ICC=35mA
Noise Figure (dB)
-40C +25C +85C
3.5
OIP3 (dBm)
20.0 18.0 16.0 14.0 12.0 10.0 100.0 600.0 1100.0 1600.0 2100.0 2600.0 3100.0 3600.0 4100.0
3.0
2.5
2.0
1.5
1.0 100.0 600.0 1100.0 1600.0 2100.0 2600.0 3100.0
Frequency (MHz)
Frequency (MHz)
Input VSWR versus Frequency Across Temperature
5.0
Output VSWR versus Frequency Across Temperature
5.0
ICC=35mA
-40C
ICC=35mA
-40C
4.5
+25C +85C
4.5
+25C +85C
4.0
4.0
3.5
3.5
VSWR
3.0
VSWR
1100.0 2100.0 3100.0 4100.0 5100.0 6100.0
3.0
2.5
2.5
2.0
2.0
1.5
1.5
1.0 100.0
1.0 100.0 1100.0 2100.0 3100.0 4100.0 5100.0 6100.0
Frequency (MHz)
Frequency (MHz)
4-604
Rev A7 060907
RF3396
Reverse Isolation versus Frequency Across Temperature ICC=35mA
27.0 -40C +25C 25.0 +85C 50.0 60.0
Current versus Voltage
(At Evaluation Board Connector, RBIAS=22)
Reverse Isolation (dB)
23.0
40.0
21.0
ICC (mA)
30.0
19.0
20.0
17.0
10.0
-40C +25C +85C
15.0 100.0 1100.0 2100.0 3100.0 4100.0 5100.0 6100.0
0.0 3.5 3.7 3.9 4.1 4.3 4.5 4.7
Frequency (MHz)
VCC (V)
Current versus Voltage
(At Pin 8 of the RF3396)
55.00 50.00 45.00 40.00 0.140
Power Dissipated versus Voltage at Pin 8
(TAMB=+85C)
0.130
0.120
Power Dissipated (W)
-40C +25C +85C Vcc=4.2V
0.110
ICC (mA)
35.00 30.00 25.00 20.00 15.00 10.00 3.20 3.25 3.30 3.35 3.40 3.45 3.50 3.55 3.60 3.65
0.100
0.090
0.080
0.070
0.060 3.195 3.200 3.205 3.210 3.215 3.220 3.225 3.230 3.235
VPIN (V)
VPIN (V)
Junction Temperature versus Power Dissipated
135.00
(TAMB=+85C)
130.00
Junction Temperature (C)
125.00
120.00
115.00
110.00
105.00 0.07 0.08 0.09 0.10 0.11 0.12 0.13
Power Dissipated (Watts)
Rev A7 060907
4-605
RF3396
PCB Design Requirements
PCB Surface Finish The PCB surface finish used for RFMD's qualification process is Electroless Nickel, immersion Gold. Typical thickness is 3inch to 8inch Gold over 180inch 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 Mask Pattern
A = 0.59 x 0.32 (mm) Typ. 0.80 (mm) Typ. 1.00 (mm) 0.40 (mm) Typ.
Pin 1
0.70 (mm) 1.00 (mm) Typ. Typ. A A A A 2.20 (mm) Typ.
3.20 (mm) Typ.
0.65 (mm) Typ. 0.95 (mm) Typ.
A A
0.30 (mm) Typ. 0.65 (mm) Typ. 1.30 (mm) Typ. 2.60 (mm)
Figure 1. PCB Metal Land Pattern (Top View)
4-606
Rev A7 060907
RF3396
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 = 0.72 x 0.45 (mm) Typ. 0.72 (mm) Typ. 1.15 (mm) 0.41 (mm) Typ.
Pin 1
0.75 (mm) Typ. 1.05 (mm) Typ. A A A A 2.27 (mm) Typ.
3.32 (mm) Typ. 0.65 (mm) Typ. 1.01 (mm) Typ.
A A
0.45 (mm) Typ. 0.65 (mm) Typ. 1.30 (mm) Typ. 2.60 (mm)
Figure 2. PCB Solder Mask (Top View) Thermal Pad and Via Design The PCB metal land pattern has been designed with a thermal pad that matches the exposed 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. NOTE: A small amount of ground inductance is required to achieve data sheet performance. The necessary inductance may be generated by ensuring that no ground vias are placed directly below the footprint of the part.
Rev A7 060907
4-607
RF3396
4-608
Rev A7 060907

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