RF2442 4 HIGH-LINEARITY LOW NOISE AMPLIFIER Typical Applications * TDMA/CDMA/FM Cellular Rx LNA * ISM Band LNA/Driver * TDMA/CDMA PCS Rx LNA * General Purpose Amplification * Low Noise Transmit Driver Amplifier * Commercial and Consumer Systems Product Description 4 0.012 Si Bi-CMOS u GaAs HBT GaAs MESFET SiGe HBT Si CMOS -A- 0.0256 0.118 + 0.004 sq. 0.034 6 MAX 0 MIN 0.021 + 0.004 Optimum Technology Matching(R) Applied Si BJT GENERAL PURPOSE AMPLIFIERS The RF2442 is a low noise amplifier with a very high dynamic range designed for the receive front end of digital cellular applications at 900MHz, 1900MHz, and 2400MHz. It is designed to amplify low level signals with minimum noise contribution while operating in the harsh, interference-rich environments of newly deployed digital subscriber units. The device also functions as an outstanding PA driver amplifier in the transmit chain of digital subscriber units where low transmit noise power is a concern. The device supports trade-offs between linearity and current drain. The designer has control of these trade-offs with the choice of an external bias resistor. The IC is featured in a standard miniature 8-lead plastic MSOP package. 0.006 + 0.003 0.192 + 0.008 0.006 + 0.002 NOTES: 1. Shaded lead is pin 1. 2. All dimensions are exclusive of flash, protrusions or burrs. 3. Lead coplanarity: 0.002 with respect to datum "A". Package Style: MSOP-8 Features * Low Noise and High Intercept Point * External Bias Control * Single 2.5V to 5.0V Power Supply VCC1 1 8 VCC2 GND1 2 7 NC RF IN 3 6 RF OUT GND2 4 5 NC * 500MHz to 2500MHz Operation * Extremely Small MSOP-8 Package Ordering Information RF2442 RF2442 PCBA-L RF2442 PCBA-M RF2442 PCBA-H Functional Block Diagram Rev B6 010612 High-Linearity Low Noise Amplifier Fully Assembled Evaluation Board (~900MHz) Fully Assembled Evaluation Board (~1900MHz) Fully Assembled Evaluation Board (~2400MHz) RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com 4-231 RF2442 Absolute Maximum Ratings Parameter Supply Voltage Input RF Level Operating Ambient Temperature Storage Temperature Parameter Rating Unit -0.5 to +6.0 +10 -40 to +85 -40 to +150 VDC dBm C C Caution! ESD sensitive device. RF Micro Devices believes the furnished information is correct and accurate at the 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). Specification Min. Typ. Max. Unit 500 to 2500 MHz Condition Overall GENERAL PURPOSE AMPLIFIERS 4 RF Frequency Range 881MHz Performance Gain 18 17 16 Output P1dB Output IP3 +21 +16 +10 Noise Figure Reverse Isolation 22 22 21 20 19 18 +13 +11 +27 +22 +16 1.6 1.5 1.4 24 24 23 22 21 20 2.5 2.5 2.5 dB dB dB dBm dBm dBm dBm dBm dB dB dB dB dB dB 1960MHz Performance Gain 10 10 10 Output P1dB Output IP3 +20 +15 +9 Noise Figure Reverse Isolation 4-232 18 17 17 12 12 12 +16 +13 +26 +21 +15 1.6 1.5 1.4 20 19 19 14 14 14 2.3 2.1 2.0 dB dB dB dBm dBm dBm dBm dBm dB dB dB dB dB dB Requires input tuning inductor below 1GHz Schematic Evaluation Board L (RC =0), T=25C, RF=881MHz VCC =3.6V VCC =3.0V VCC =2.5V VCC =3.6V VCC =3.0V VCC =3.6V VCC =3.0V VCC =2.5V VCC =3.6V VCC =3.0V VCC =2.5V VCC =3.6V VCC =3.0V VCC =2.5V Schematic Evaluation Board M (RC =0), T=25C, RF=1960MHz VCC =3.6V VCC =3.0V VCC =2.5V VCC =3.6V VCC =3.0V VCC =3.6V VCC =3.0V VCC =2.5V VCC =3.6V VCC =3.0V VCC =2.5V VCC =3.6V VCC =3.0V VCC =2.5V Rev B6 010612 RF2442 Specification Min. Typ. Max. Unit 2400MHz Performance Gain Output IP3 7 7 6 +20 +15 +9 16 16 16 9 9 8 +26 +21 +15 1.6 1.5 1.4 17 17 17 17 10 7 2.5 to 5.0 19 12 9 Noise Figure Reverse Isolation 11 11 10 2.5 2.3 2.1 dB dB dB dBm dBm dBm dB dB dB dB dB dB Power Supply Voltage Current Consumption Rev B6 010612 30 23 20 V mA mA mA Condition Schematic Evaluation Board H (RC =0), T=25C, RF=2400MHz VCC =3.6V VCC =3.0V VCC =2.5V VCC =3.6V VCC =3.0V VCC =2.5V VCC =3.6V VCC =3.0V VCC =2.5V VCC =3.6V VCC =3.0V VCC =2.5V T=25C VCC =3.6V VCC =3.0V VCC =2.5V 4-233 4 GENERAL PURPOSE AMPLIFIERS Parameter RF2442 Pin 1 GENERAL PURPOSE AMPLIFIERS 4 Function VCC1 2 GND1 3 RF IN 4 GND2 5 6 NC RF OUT 7 8 NC VCC2 4-234 Description Supply voltage for the LNA. 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. This pin connects to pin 8 through a 150 resistor. This allows for simple biasing of the collector at pin 6. Refer to Application Schematics 1 and 3. Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. RF input pin. This pin is internally DC-blocked and matched to 50 for frequencies above 1GHz. When using below 1GHz, it is recommended that this pin be matched with series inductance to series-resonate out the internal blocking capacitor. Refer to Application Schematics 1 and 2. Interface Schematic 150 VCC1 VCC2 BIAS To bias circuits LNA OUT LNA IN Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. No connection. This pin is typically left unconnected or grounded. LNA Output pin. This pin is an open-collector output. It must be biased to either VCC or pin 8 through a choke or matching inductor. This pin is typically matched to 50 with a shunt bias/matching inductor and series blocking/matching capacitor. Refer to application schematics. No connection. This pin is typically left unconnected or grounded. See pin 3. Optional power supply connection for biasing pin 6. This pin connects to pin 1 through a 150 resistor. This allows for simple biasing of the collector at pin 6. When used, this pin should be RF bypassed. Refer to Application Schematics 1 and 3. See pin 1. Rev B6 010612 RF2442 Evaluation Board Schematic (L board) ~900 MHz (Download Bill of Materials from www.rfmd.com.) C1 1 nF VCC 2442401- J1 R F IN 50 strip L2 8.2 nH C5 1.5 pF R1 0 1 8 2 7 3 6 4 5 L1 15 nH C3 22 pF 50 strip C4 1.5 pF 4 J2 RF OUT GENERAL PURPOSE AMPLIFIERS C2 22 pF Evaluation Board Schematic (M board) ~1900 MHz C1 1 nF VCC 2442400B C2 22 pF J1 R F IN R1 0 1 8 2 7 3 6 4 5 50 strip L1 4.7 nH C3 22 pF 50 strip C4 1.0 pF J2 RF OUT Evaluation Board Schematic (H board) ~2400 MHz C1 1 nF VCC 2442402- C2 22 pF J1 R F IN Rev B6 010612 R1 0 1 8 2 7 3 6 4 5 50 strip L1 3.9 nH C3 22 pF 50 strip C4 0.5 pF J2 RF OUT 4-235 RF2442 Evaluation Board Layout 900MHz Board Size 1.150" x 1.165" GENERAL PURPOSE AMPLIFIERS 4 Evaluation Board Layout 1900MHz Board Size 1.150" x 1.165" 4-236 Rev B6 010612 RF2442 Evaluation Board Layout 2400MHz Board Size 1.150" x 1.165" GENERAL PURPOSE AMPLIFIERS 4 Rev B6 010612 4-237 RF2442 Gain vs. Output Level (Freq = 881MHz) 30 Noise Figure vs. Frequency 2.5 Vcc=3.0, Noise Match Vcc=3.0, Gmax Match 2.0 Vcc=3.6, Noise Match Vcc=3.6, Gmax Match Noise Figure (dB) Gain (dB) 25 20 1.5 1.0 Vcc=3.0, Noise Match 4 Vcc=3.0, Gmax Match 15 GENERAL PURPOSE AMPLIFIERS 0.5 Vcc=3.6, Noise Match Vcc=3.6, Gmax Match 10 -10 -5 10 0 5 10 0.0 800 15 900 950 Frequency (MHz) Input IP3 vs. Input Level (Freq = 881MHz) Output IP3 vs. Output Level (Freq = 881MHz) 30 1000 25 Output IP3 (dBm) 5 Input IP3 (dBm) 850 Output Level (dBm) 0 20 Vcc=3.0, Noise Match Vcc=3.0, Noise Match Vcc=3.0, Gmax Match -5 Vcc=3.0, Gmax Match 15 Vcc=3.6, Noise Match Vcc=3.6, Noise Match Vcc=3.6, Gmax Match Vcc=3.6, Gmax Match -10 10 -30 -25 -20 -15 -10 -5 -10 -5 0 Input Level (dBm) Output IM3 Level vs. Input Level (Freq = 881MHz) 10 5 10 15 -10 -5 Output Level (dBm) Power Out vs. Power In (Freq = 881MHz) 20 Vcc=3.0, Noise Match 0 15 Output Level, single tone (dBm) Output IM3 Level, per tone (dBm) Vcc=3.6, Noise Match -10 Ideal IM3 Slope -20 -30 -40 -50 -60 Vcc = 3.0V 10 Vcc = 3.6V Ideal Gain Slope (3.6V) 5 0 -70 -5 -80 -90 -10 -30 -25 -20 -15 Input Level, per tone (dBm) 4-238 -10 -5 -30 -25 -20 -15 Input Level, single tone (dBm) Rev B6 010612 RF2442 Icc vs. Output Level (Freq = 881MHz) 25 Efficiency vs. Output Level (Freq = 881MHz) 50% Vcc=3.0, Noise Match 45% Vcc=3.0, Noise Match Vcc=3.0, Gmax Match Vcc=3.6, Noise Match 35% 15 Vcc=3.6, Gmax Match 30% 25% 20% 15% 4 10 10% 5% 5 0% -10 -5 0 5 10 15 -10 -5 0 Output Level (dBm) Gain vs. Output Level (Freq = 1960MHz) 20 5 10 15 1900 2000 Output Level (dBm) Noise Figure vs. Frequency 2.0 Vcc = 3.6V Vcc = 3.0V 1.6 Gain (dB) Noise Figure (dB) 15 10 1.2 0.8 Vcc = 3.6V 0.4 Vcc = 3.0V 5 -20 -10 20 0 10 0.0 1500 20 1700 1800 Frequency (MHz) Input IP3 vs. Input Level (Freq = 1960MHz) Output IP3 vs. Input Level (Freq = 1960MHz) 30 25 Input IP3 (dBm) 15 Input IP3 (dBm) 1600 Output Level (dBm) 10 5 20 15 Vcc = 3.6V Vcc = 3.6V Vcc = 3.0V Vcc = 3.0V 0 10 -20 -15 -10 Input Level (dBm) Rev B6 010612 -5 0 -20 -15 -10 -5 0 Input Level (dBm) 4-239 GENERAL PURPOSE AMPLIFIERS Vcc=3.6, Gmax Match Efficiency (%) Icc (mA) Vcc=3.0, Gmax Match 40% Vcc=3.6, Noise Match 20 RF2442 Output IM3 Level vs. Input Level (Freq = 1960MHz) 0 Power Out vs. Power In (Freq = 1960MHz) 20 Vcc = 3.6V Vcc = 3.0V Output Level, single tone (dBm) 15 Ideal IM3 Slope -20 -30 -40 -50 -60 10 5 0 Vcc = 3.0V Vcc = 3.6V -5 GENERAL PURPOSE AMPLIFIERS Ideal Gain Slope (3.6V) -70 -80 -10 -20 -15 -10 -5 0 -20 -15 Input Level, per tone (dBm) Icc vs. Output Level (Freq = 1960MHz) 25 -10 -5 0 5 10 15 20 Input Level, single tone (dBm) Efficiency vs. Output Level (Freq = 1960MHz) 70% Vcc = 3.6V Vcc = 3.0V 60% Vcc = 3.0V Vcc = 3.6V 20 Icc (mA) 50% Efficiency (%) 4 Output IM3 Level, per tone (dBm) -10 15 40% 30% 20% 10 10% 5 0% -20 -10 0 Output Level (dBm) 4-240 10 20 -10 -5 0 5 10 Output Level (dBm) Rev B6 010612