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| RF2442 0 Typical Applications * TDMA/CDMA/FM Cellular Rx LNA * TDMA/CDMA PCS Rx LNA * Low Noise Transmit Driver Amplifier Product Description 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. 0.192 0.008 0.012 0.006 0.003 -A- HIGH-LINEARITY LOW NOISE AMPLIFIER RoHS Compliant & Pb-Free Product * ISM Band LNA/Driver * General Purpose Amplification * Commercial and Consumer Systems 0.0256 0.118 0.004 sq 6 MAX 0 MIN 0.034 NOTES: 1. Shaded lead is pin 1. 0.021 0.004 0.006 0.002 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: MSOP-8 Features * Low Noise and High Intercept Point * External Bias Control * Single 2.5V to 5.0V Power Supply * 500MHz to 2500MHz Operation * Extremely Small MSOP-8 Package VCC1 1 GND1 2 RF IN 3 GND2 4 8 VCC2 7 NC 6 RF OUT Ordering Information 5 NC RF2442 RF2442 PCBA-L RF2442 PCBA-M RF2442 PCBA-H High-Linearity Low Noise Amplifier Fully Assembled Evaluation Board (~900MHz) Fully Assembled Evaluation Board (~1900MHz) Fully Assembled Evaluation Board (~2400MHz) Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com Functional Block Diagram RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Rev B7 060918 4-491 RF2442 Absolute Maximum Ratings Parameter Supply Voltage Input RF Level Operating Ambient Temperature Storage Temperature Rating -0.5 to +6.0 +10 -40 to +85 -40 to +150 Unit 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. 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 RF Frequency Range Specification Min. Typ. Max. 500 to 2500 Unit MHz Condition 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 881MHz Performance Gain 18 17 16 20 19 18 +13 +11 +27 +22 +16 1.6 1.5 1.4 24 24 23 22 21 20 dB dB dB dBm dBm dBm dBm dBm dB dB dB dB dB dB Output P1dB Output IP3 +21 +16 +10 Noise Figure 2.5 2.5 2.5 Reverse Isolation 22 22 21 1960MHz Performance Gain 10 10 10 12 12 12 +16 +13 +26 +21 +15 1.6 1.5 1.4 20 19 19 14 14 14 dB dB dB dBm dBm dBm dBm dBm dB dB dB dB dB dB Output P1dB Output IP3 +20 +15 +9 Noise Figure 2.3 2.1 2.0 Reverse Isolation 18 17 17 4-492 Rev B7 060918 RF2442 Parameter 2400MHz Performance Gain 7 7 6 +20 +15 +9 9 9 8 +26 +21 +15 1.6 1.5 1.4 17 17 17 2.5 to 5.0 19 12 9 11 11 10 dB dB dB dBm dBm dBm dB dB dB dB dB dB V mA mA mA Specification Min. Typ. Max. Unit 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 Output IP3 Noise Figure 2.5 2.3 2.1 Reverse Isolation 16 16 16 Power Supply Voltage Current Consumption 17 10 7 30 23 20 Rev B7 060918 4-493 RF2442 Pin 1 Function VCC1 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. 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. 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 3. Interface Schematic 150 VCC1 BIAS VCC2 2 3 GND1 RF IN To bias circuits LNA OUT LNA IN 4 5 6 GND2 NC RF OUT 7 8 NC VCC2 See pin 1. 4-494 Rev B7 060918 RF2442 Evaluation Board Schematic (L board) ~900 MHz (Download Bill of Materials from www.rfmd.com.) C1 1 nF VCC C2 22 pF 1 L2 8.2 nH C5 1.5 pF 2 3 4 24424018 7 6 5 C4 1.5 pF L1 15 nH C3 22 pF 50 strip J2 RF OUT R1 0 J1 RF IN 50 strip Evaluation Board Schematic (M board) ~1900 MHz C1 1 nF VCC C2 22 pF 1 2 J1 RF IN 50 strip 3 4 6 5 C4 1.0 pF 2442400B 8 7 L1 4.7 nH C3 22 pF 50 strip J2 RF OUT R1 0 Evaluation Board Schematic (H board) ~2400 MHz C1 1 nF VCC C2 22 pF 1 2 J1 RF IN 50 strip 3 4 6 5 C4 0.5 pF 24424028 7 L1 3.9 nH C3 22 pF 50 strip J2 RF OUT R1 0 Rev B7 060918 4-495 RF2442 Evaluation Board Layout 900MHz Board Size 1.150" x 1.165" Evaluation Board Layout 1900MHz Board Size 1.150" x 1.165" 4-496 Rev B7 060918 RF2442 Evaluation Board Layout 2400MHz Board Size 1.150" x 1.165" Rev B7 060918 4-497 RF2442 30 Gain vs. Output Level (Freq = 881MHz) Vcc=3.0, Noise Match Vcc=3.0, Gmax Match Vcc=3.6, Noise Match Noise Figure vs. Frequency 2.5 2.0 25 Vcc=3.6, Gmax Match Noise Figure (dB) Gain (dB) 1.5 20 1.0 Vcc=3.0, Noise Match 15 0.5 Vcc=3.0, Gmax Match Vcc=3.6, Noise Match Vcc=3.6, Gmax Match 10 -10 -5 0 5 10 15 0.0 800 850 900 950 1000 Output Level (dBm) Frequency (MHz) 10 Input IP3 vs. Input Level (Freq = 881MHz) 30 Output IP3 vs. Output Level (Freq = 881MHz) 5 25 0 Output IP3 (dBm) Vcc=3.0, Noise Match Input IP3 (dBm) 20 Vcc=3.0, Noise Match 15 Vcc=3.0, Gmax Match Vcc=3.6, Noise Match Vcc=3.6, Gmax Match -5 Vcc=3.0, Gmax Match Vcc=3.6, Noise Match Vcc=3.6, Gmax Match -10 -30 -25 -20 -15 -10 -5 10 -10 -5 0 5 10 15 Input Level (dBm) Output Level (dBm) 10 0 Output IM3 Level vs. Input Level (Freq = 881MHz) Vcc=3.0, Noise Match Vcc=3.6, Noise Match 20 Power Out vs. Power In (Freq = 881MHz) 15 Output IM3 Level, per tone (dBm) -10 Ideal IM3 Slope -20 -30 -40 -50 -60 -70 -5 -80 -90 -30 -25 -20 -15 -10 -5 -10 -30 -25 -20 -15 -10 -5 Output Level, single tone (dBm) 10 Vcc = 3.0V Vcc = 3.6V Ideal Gain Slope (3.6V) 5 0 Input Level, per tone (dBm) Input Level, single tone (dBm) 4-498 Rev B7 060918 RF2442 25 Icc vs. Output Level (Freq = 881MHz) Vcc=3.0, Noise Match Vcc=3.0, Gmax Match Vcc=3.6, Noise Match 50% 45% 40% 35% Efficiency vs. Output Level (Freq = 881MHz) Vcc=3.0, Noise Match Vcc=3.0, Gmax Match Vcc=3.6, Noise Match 20 Vcc=3.6, Gmax Match Vcc=3.6, Gmax Match Efficiency (%) -10 -5 0 5 10 15 30% 25% 20% 15% Icc (mA) 15 10 10% 5% 5 0% -10 -5 0 5 10 15 Output Level (dBm) Output Level (dBm) 20 Gain vs. Output Level (Freq = 1960MHz) Vcc = 3.6V Vcc = 3.0V Noise Figure vs. Frequency 2.0 1.6 Noise Figure (dB) 15 Gain (dB) 1.2 0.8 10 0.4 Vcc = 3.6V Vcc = 3.0V 5 -20 -10 0 10 20 0.0 1500 1600 1700 1800 1900 2000 Output Level (dBm) Frequency (MHz) 20 Input IP3 vs. Input Level (Freq = 1960MHz) 30 Output IP3 vs. Input Level (Freq = 1960MHz) 15 25 Input IP3 (dBm) 10 Input IP3 (dBm) Vcc = 3.6V Vcc = 3.0V 20 5 15 Vcc = 3.6V Vcc = 3.0V 0 -20 -15 -10 -5 0 10 -20 -15 -10 -5 0 Input Level (dBm) Input Level (dBm) Rev B7 060918 4-499 RF2442 0 Output IM3 Level vs. Input Level (Freq = 1960MHz) Vcc = 3.6V 20 Power Out vs. Power In (Freq = 1960MHz) -10 Vcc = 3.0V Ideal IM3 Slope 15 Output IM3 Level, per tone (dBm) -20 Output Level, single tone (dBm) 10 -30 -40 5 -50 0 Vcc = 3.0V Vcc = 3.6V -5 Ideal Gain Slope (3.6V) -60 -70 -80 -20 -15 -10 -5 0 -10 -20 -15 -10 -5 0 5 10 Input Level, per tone (dBm) Input Level, single tone (dBm) 25 Icc vs. Output Level (Freq = 1960MHz) Vcc = 3.6V 70% Efficiency vs. Output Level (Freq = 1960MHz) Vcc = 3.0V Vcc = 3.0V 20 60% Vcc = 3.6V 50% Efficiency (%) Icc (mA) 40% 15 30% 20% 10 10% 5 -20 -10 0 10 20 0% -10 -5 0 5 10 15 20 Output Level (dBm) Output Level (dBm) 4-500 Rev B7 060918 |
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