RF2374 3V LOW NOISE AMPLIFIER 6 RF OUT RF IN 1 Logic Control GND 2 5 GND 3 4 Functional Block Diagram Applications 7 GAIN SELECT Low Noise and High Intercept Point Adjustable Bias Current Power Down Control Low Insertion Loss Bypass Feature 1.8V to 4V Operation (See Note: Page 2) 800MHz to 3.8GHz Operation ESD Class 1B 8 VREF NC Features NC Package Style: QFN, 8-Pin, 2.2mmx2.2mmx0.6mm WLAN LNA with Bypass Feature CDMA PCS LNA with Bypass Feature GPS LNA with Bypass Feature General Purpose Amplification WiMAX LNA with Bypass Function CDMA 800 LNA Product Description The RF2374 is a switchable low noise amplifier with a high dynamic range designed for digital cellular and WLAN applications. The device functions as an outstanding front end low noise amplifier with ICC as low as 3mA. The bias current may be set externally. The IC is featured in a 2.2mmx2.2mmx0.6mm module-compatible plastic package. Ordering Information RF2374 RF2374 PCK-410 RF2374 PCK-411 GaAs HBT GaAs MESFET InGaP HBT 3V Low Noise Amplifier Fully Assembled Evaluation Board, 2.4GHz to 2.5GHz with standard tune Fully Assembled Evaluation Board, 1.5GHz to 2.2GHz with standard tune Optimum Technology Matching(R) Applied SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT Si CMOS Si BJT GaN HEMT BiFET HBT LDMOS RF MICRO DEVICES(R), RFMD(R), Optimum Technology Matching(R), Enabling Wireless ConnectivityTM, PowerStar(R), POLARISTM TOTAL RADIOTM and UltimateBlueTM 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. (c)2006, RF Micro Devices, Inc. DS101118 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 1 of 13 RF2374 Absolute Maximum Ratings Parameter Rating Unit -0.5 to +6.0 VDC Input RF Level at F<2.3GHz +5 (see note) dBm Input RF Level at F>2.3GHz +10 (see note) dBm 32 mA Operating Ambient Temperature -40 to +85 C Storage Temperature -40 to +150 C Supply Voltage Current Drain, ICC NOTE: Exceeding any one or a combination of the above maximum rating limits may cause permanent damage. Input RF transients to +15dBm will not harm the device. For sustained operation at inputs >+5dBm, a small dropping resistor is recommended in series with the VCC in order to limit the current due to self-biasing to <32mA. Furthermore, while the LNA is in Bypass Mode, and for sustained operation at the input, +10dBm is the maximum recommended power level for Frequencies above 2300MHz. +5dBm is the maximum recommended power level for Frequencies <2300MHz. 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 Operating Range Frequency Range Condition TAMB =+25C, VCC =3.0V 50 4000 MHz 2300 2700 MHz WiBRO/WLAN/WiMAX Low Noise Amplifier Frequency HIGH GAIN MODE Gain Gain Select<0.8V, VREF =3V, T=+25C 13.5 Noise Figure 14.5 1.3 Input IP3 +7 IP1dB 0 Current Drain dB 1.5 +9 dB dBm IIP3 will improve if ICC is raised above 7mA. dBm 7 mA BYPASS MODE (Low Gain) Gain Select>1.6V Gain -4.0 -3.0 Input IP3 +20 +21 Current Drain 2.8 -2.0 dB Note: Bypass mode insertion loss will degrade gradually as VCC goes below 2.7V. dBm 3.0 mA Current drain includes ICC +IREF GPS Low Noise Amplifier Frequency 1575 MHz Gain 17.5 dB Noise Figure 1.2 dB Input IP3 +7.0 dBm ICC =6.5mA, ICC +IREF =7.5mA WiMAX Low Noise Amplifier Frequency 3100 Gain 3500 3800 11.0 Noise Figure Input IP3 MHz ICC =7mA dB 1.6 dB +10.0 dBm IIP3 will improve if ICC is raised above 7mA. BYPASS MODE (Low Gain) Gain Input IP3 2 of 13 -3.0 20.5 22.0 -2.5 dB dBm 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS101118 RF2374 Parameter Min. Specification Typ. Max. Unit Condition CDMA Low Noise Amplifier HIGH GAIN MODE Frequency 869 894 MHz Gain 19 Noise Figure 1.0 dB Input IP3 +2.0 dBm 7 mA Current Drain dB IIP3 will improve if ICC is raised above 7mA. Low Band LNA HIGH GAIN MODE Frequency 50 950 MHz Gain 20 dB 88MHz Gain 19 dB 870MHz Noise Figure 2.5 dB 88MHz Noise Figure 1.5 dB Input IP3 +2.0 dBm 870MHz IIP3 will improve if ICC is raised above 7mA. Power Supply Voltage (VCC) 3 Gain Select Low Level (High Gain Mode) Gain Select High Level (Bypass Mode) 1.6 Gain Select On/Off Time Power Down V 0.8 0 V High Gain mode. Gain Select<0.8V, VREF =3V (typical) V Low Gain mode. Gain Select>1.6V, VREF: see bias note 2 <150 nSec 5 A (C1 values range from 3 to 10pF), Temp=-40C to +85C, and over process Gain Select<0.8V, VREF =0V, VCC =3.0V Bias note: Due to the presence of ESD protection circuitry on the RF2374, the maximum allowable collector bias voltage (pin 6) is 4.0V. Higher supply voltages such as 5V are permissible if a series resistor is used to drop VCC to <4.0V for a given ICC. Bias note 2: In bypass mode, VREF is essentially a "don't care" condition. Pulling VREF low when in bypass mode does conserve the small 1mA to 2mA supplied by VREF. DS101118 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 3 of 13 RF2374 Pin 1 Function RF IN Description Interface Schematic RF input pin. This part is designed such that 50 is the optimal source impedance for best noise figure. Best noise figure is achieved with only a series capacitor on the input. To Bias Circuit RF OUT RF IN 2 GND1 3 VREF 4 GAIN SELECT 5 GND2 6 RF OUT 7 8 Pkg Gnd NC NC GND Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. For low noise amplifier applications, this pin is used to control the bias current. An external resistor can be used to set the bias current for any VBIAS voltage. This device will have good gain and noise figure with ICC as low as 3mA. VREF This pin selects high gain and bypass modes. Gain Select<0.8V, high gain. Gain Select>1.6V, low gain. See GND1. Amplifier output pin. This pin is an open-collector output. It must be biased to VCC through a choke or matching inductor. Not connected. Not connected. This pad should be connected to the ground plane by vias directly under the device. Package Drawing 4 of 13 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS101118 RF2374 Evaluation Board Schematic WLAN (2.4GHz to 2.5GHz) P1 1 VCC 2 GND P1-3 3 GAIN SELECT P1-4 4 VREF P1-1 VCC C5 10 nF CON4 J1 RF IN C1 22 nF 50 strip 8 1 C4 100 pF 6 2 R1 1.8 k L1 1.5 nH 7 5 3 C2 DNP 50 strip C3 1.0 pF J2 RF OUT 4 VREF GAIN SELECT Evaluation Board Schematic GPS/PCS (1.5GHz to 2.2GHz) P1 1 VCC 2 GND P1-3 3 GAIN SELECT P1-4 4 VREF P1-1 VCC C5 10 nF CON4 J1 RF IN 50 strip C1 22 nF 8 1 C4 100 pF 6 2 R1 1.8 k L1 3.3 nH 7 5 3 C2 DNP 50 strip C3 1.8 pF 4 VREF DS101118 J2 RF OUT GAIN SELECT 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 5 of 13 RF2374 Application Schematic - 869MHz to 894MHz Tune P1 1 VCC 2 GND P1-3 3 GAIN SELECT P1-4 4 VREF P1-1 VCC C5 10 nF Only needed below 1500 MHz to lower gain, improve RL, and maintain stability. CON4 J1 RF IN C1 22 nF 50 strip 8 1 L1 3.9 nH 50 strip 6 2 R1 1.8 k 100 7 C4 100 pF 5 3 C2 3.9 pF C3 10 pF J2 RF OUT 4 GAIN SELECT VREF Application Schematic for Wide Band Tune WiBRO/WLAN/WiMAX (2.3GHz to 3.8GHz) P1 1 VCC 2 GND P1-3 3 GAIN SELECT P1-4 4 VREF P1-1 VCC C5 10 nF CON4 J1 RF IN 50 strip C1 22 nF 8 1 C4 100 pF 6 2 R1 1.8 k L1 1.8 nH 7 5 3 C2 DNP 50 strip C3 2.0 pF 4 VREF 6 of 13 J2 RF OUT GAIN SELECT 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS101118 RF2374 Application Schematic for Low Band Tune P1 VCC 1 2 GAIN SELECT 3 VREF 4 VCC CON4 C5 10 nF C6 1000 pF R2 1.2 K C4 100 pF L1 100 nH 8 C1 22 nF J1 RF IN C3 DNP C3 100 pF 1 6 2 5 3 VREF 7 C2 DNP J2 RFOUT 4 R1 1.8 K GAIN SELECT Evaluation Board Layout Board Size 0.835" x 0.900" Board Thickness 0.032", Board Material FR-4 DS101118 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 7 of 13 RF2374 GPS Band Data Gain @ GPS Band in High Gain Mode VCC=3.0V and VREF=3.0V Over Temp 23.0 0.0 -0.5 22.0 -1.0 21.0 -1.5 Gain (dB) 20.0 Gain (dB) Gain @ GPS Band in Bypass Mode VCC=3.0V and VREF=3.0V Over Temp 19.0 18.0 17.0 -2.0 -2.5 -3.0 -3.5 16.0 -4.0 Gain @ -40C Gain @ 25C Gain @ 85C 15.0 14.0 1500.0 1520.0 1540.0 1560.0 1580.0 Gain @ -40C Gain @ 25C Gain @ 85C -4.5 -5.0 1600.0 1500.0 1520.0 Frequency (MHz) 1540.0 1560.0 1580.0 1600.0 Frequency (MHz) Noise Figure @ GPS Band in High Gain Mode VCC=3.0V and VREF=3.0V Over Temp 8.0 Noise Figure @ GPS Band in Bypass Mode VCC = 3.0V and VREF=3.0V Over Temp 2.8 7.0 2.4 6.0 5.0 NF (dB) NF (dB) 2.0 1.6 1.2 3.0 0.8 2.0 NF @ -40C NF @ 25C NF @ 85C 0.4 0.0 1500.0 1520.0 1540.0 1560.0 Frequency (MHz) 8 of 13 4.0 1580.0 1600.0 NF @ -40C NF @ 25C NF @ 85C 1.0 0.0 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 Frequency (MHz) 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS101118 RF2374 18.0 IIP3 @ GPS Band in High Gain Mode VCC=3.0V and VREF=3.0V Over Temp 24.0 16.0 23.0 14.0 22.0 IIP3 (dBm) IIP3 (dBm) 12.0 10.0 8.0 6.0 IIP3 @ -40C IIP3 @ 25C IIP3 @ 85C 2.0 0.0 20.0 19.0 IIP3 @ -40C IIP3 @ 25C IIP3 @ 85C 17.0 16.0 1520.0 1540.0 1560.0 1580.0 1600.0 Frequency (MHz) 24.0 21.0 18.0 4.0 1500.0 IIP3 @ GPS Band in Bypass Mode VCC=3.0V and VREF = 3.0V Over Temp 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 Frequency (MHz) IIP3 @ GPS Band in Bypass Mode VCC=3.0V and VREF = 3.0V Over Temp 23.0 IIP3 (dBm) 22.0 21.0 20.0 19.0 18.0 IIP3 @ -40C IIP3 @ 25C IIP3 @ 85C 17.0 16.0 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 Frequency (MHz) DS101118 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 9 of 13 RF2374 WiBRO/WLAN/WiMAX Data 22.0 Gain @ WLAN Band in High Gain Mode VCC=3.0V and VREF=3.0V Over Temp 0.0 Gain @ WLAN Band in Bypass Mode VCC=3.0V and VREF=3.0V Over Temp 20.0 -1.0 Gain (dB) Gain (dB) 18.0 16.0 14.0 -2.0 -3.0 12.0 -4.0 Gain @ -40C Gain @ 25C Gain @ 85C 10.0 8.0 Gain @ -40C Gain @ 25C Gain @ 85C -5.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 Frequency (MHz) Frequency (MHz) Noise Figure @ WLAN Band in High Gain Mode VCC=3.0V and VREF=3.0V Over Temp IIP3 @ WLAN Band in High Gain Mode VCC=3.0V and VREF=3.0V Over Temp 3.0 16.0 14.0 2.5 12.0 IIP3 (dBm) NF (dB) 2.0 1.5 1.0 10.0 8.0 6.0 4.0 0.5 NF @ -40C NF @ 25C NF @ 85C IIP3 @ -40C IIP3 @ 25C IIP3 @ 85C 2.0 0.0 0.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 Frequency (MHz) Frequency (MHz) IIP3 @ WLAN Band in Bypass Mode VCC=3.0V and VREF=3.0V Over Temp ICC + IREF @ WLAN Band in High Gain Mode 28.0 9.0 VCC=3.0V and VREF=3.0V Over Temp 8.5 26.0 8.0 ICC + IREF (mA) IIP3 (dBm) 24.0 22.0 20.0 7.5 7.0 6.5 6.0 18.0 IIP3 @ -40C IIP3 @ 25C IIP3 @ 85C 16.0 ICC + IREF @ -40C ICC + IREF @ 25C ICC + IREF @ 85C 5.5 5.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 Frequency (MHz) Frequency (MHz) 10 of 13 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS101118 RF2374 WiMAX Data 18.0 Gain @ WiMAX Band in High Gain Mode VCC=3.0V and VREF=3.0V Over Temp 0.0 16.0 Gain @ WiMAX Band in Bypass Mode VCC=3.0V and VREF=3.0V Over Temp -1.0 Gain (dB) Gain (dB) 14.0 12.0 -2.0 -3.0 10.0 -4.0 Gain @ -40C Gain @ 25C Gain @ 85C 8.0 6.0 -5.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 Frequency (MHz) Frequency (MHz) 4.0 Noise Figure @ WiMAX Band in High Gain Mode VCC=3.0V and VREF=3.0V Over Temp 18.0 3.5 14.0 IIP3 (dBm) 2.5 NF (dB) IIP3 @ WiMAX Band in High Gain Mode VCC=3.0V and VREF=3.0V Over Temp 16.0 3.0 2.0 1.5 12.0 10.0 8.0 1.0 NF @ -40C NF @ 25C NF @ 85C 0.5 0.0 IIP3 @ -40C IIP3 @ 25C IIP3 @ 85C 6.0 4.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 Frequency (MHz) Frequency (MHz) IIP3 @ WiMAX Band in Bypass Mode VCC=3.0V and VREF=3.0V Over Temp ICC + IREF @ WiMAX Band in High Gain Mode 30.0 9.0 28.0 VCC=3.0V and VREF=3.0V Over Temp 8.5 26.0 8.0 ICC + IREF (mA) 24.0 IIP3 (dBm) Gain @ -40C Gain @ 25C Gain @ 85C 22.0 20.0 18.0 7.5 7.0 6.5 6.0 16.0 IIP3 @ -40C IIP3 @ 25C IIP3 @ 85C 14.0 12.0 ICC + IREF @ -40C ICC + IREF @ 25C ICC + IREF @ 85C 5.5 5.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 Frequency (MHz) Frequency (MHz) DS101118 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 11 of 13 RF2374 CDMA Data Noise Figure Over Frequency and Voltage (VCC= 3V to 5V; VREF= 3V to 3.6V) 1.2 Gain 25.0 Vcc = 3 V Vref = 3 V Vcc = 3.6 V Vref = 3 V Vcc = 3.6 V Vref = 3.6 V Vcc = 5 V Vref = 3 V Vcc = 5 V Vref = 3.6 V 24.5 1.0 24.0 Noise Figure (dB) 23.5 Gain (dB) 0.8 0.6 0.4 23.0 22.5 22.0 21.5 21.0 0.2 20.5 20.0 0.0 860 930 860 930 860 930 860 930 860 850 930 860 870 880 10 29 9 28 8 27 7 IIP3 (dBm) OIP3 (dBm) 30 26 25 24 Vcc = 3 V Vref = 3 V Vcc = 3.6 V Vref = 3 V Vcc = 3.6 V Vref = 3.6 V Vcc = 5 V Vref = 3 V Vcc = 5 V Vref = 3.6 V 23 22 21 880 890 940 900 910 920 930 6 5 4 1 0 850 940 860 870 880 890 900 910 Frequency (MHz) Frequency (MHz) OP1dB IP1dB -10.0 10.5 -10.5 10.0 -11.0 9.5 -11.5 9.0 8.5 8.0 Vcc = 3 V Vref = 3 V Vcc = 3.6 V Vref = 3 V Vcc = 3.6 V Vref = 3.6 V Vcc = 5 V Vref = 3 V Vcc = 5 V Vref = 3.6 V 7.5 7.0 6.5 920 930 940 -12.0 -12.5 -13.0 Vcc = 3 V Vref = 3 V Vcc = 3.6 V Vref = 3 V Vcc = 3.6 V Vref = 3.6 V Vcc = 5 V Vref = 3 V Vcc = 5 V Vref = 3.6 V -13.5 -14.0 -14.5 -15.0 6.0 860 870 880 890 900 910 Frequency (MHz) 12 of 13 930 Vcc = 3 V Vref = 3 V Vcc = 3.6 V Vref = 3 V Vcc = 3.6 V Vref = 3.6 V Vcc = 5 V Vref = 3 V Vcc = 5 V Vref = 3.6 V 11.0 850 920 2 IP1dB (dBm) OP1dB (dBm) 870 910 3 20 860 900 IIP3 OIP3 850 890 Frequency (MHz) Frequency 920 930 940 850 860 870 880 890 900 910 920 930 940 Frequency (MHz) 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS101118 RF2374 Low Band Tune Data DS101118 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 13 of 13