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| RF2374 3V LOW NOISE AMPLIFIER RoHS Compliant & Pb-Free Product Package Style: QFN, 8-Pin, 2mmx2mmx0.6mm NC Features 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 RF IN 1 8 NC 7 6 RF OUT Logic Control GND 2 3 VREF 5 GND 4 Applications 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 Functional Block Diagram 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 2mmx2mmx0.6mm module-compatible plastic package. Ordering Information RF2374 RF2374 PCBA-410 RF2374 PCBA-411 3V Low Noise Amplifier Fully Assembled Evaluation Board, 2.3GHz to 3.8GHz with standard tune Fully Assembled Evaluation Board, 1.5GHz to 2.2GHz with standard tune Optimum Technology Matching(R) Applied GaAs HBT GaAs MESFET InGaP HBT SiGe BiCMOS Si BiCMOS SiGe HBT GaAs pHEMT Si CMOS Si BJT GaN HEMT 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. Rev A0 DS070705 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. GAIN SELECT 1 of 8 RF2374 Absolute Maximum Ratings Parameter Supply Voltage Input RF Level Current Drain, ICC Operating Ambient Temperature Storage Temperature Rating -0.5 to +6.0 +5 (see note) 32 -40 to +85 -40 to +150 Unit VDC dBm mA C C 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. RoHS status based on EUDirective2002/95/EC (at time of this document revision). Caution! ESD sensitive device. 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. Parameter Operating Range Frequency Range Min. 800 Specification Typ. Max. 4000 Unit MHz MHz Condition TAMB =+25C, VCC =3.0V WLAN Low Noise Amplifier Frequency HIGH GAIN MODE Gain Noise Figure Input IP3 IP1dB Current Drain BYPASS MODE (Low Gain) Gain Input IP3 Current Drain -4.0 +19 -3.0 +21 2.0 1575 17.5 1.0 +7.0 3500 11.0 1.6 +10.0 3.0 -2.0 dB dBm mA MHz dB dB dBm MHz dB dB dBm ICC =7mA At 3500MHz At 3500MHz IIP3 will improve if ICC is raised above 7mA. ICC =7mA +7 0 7 13.5 14.5 1.3 +9 1.5 dB dB dBm dBm mA Gain Select>1.8V Note: Bypass mode insertion loss will degrade gradually as VCC goes below 2.7V. IIP3 will improve if ICC is raised above 7mA. 2450 Gain Select<0.8V, VREF =3V, T=+25C GPS Low Noise Amplifier Frequency Gain Noise Figure Input IP3 WiMAX Low Noise Amplifier Frequency Gain Noise Figure Input IP3 CDMA Low Noise Amplifier HIGH GAIN MODE Frequency Gain Noise Figure Input IP3 Current Drain 869 19 1.0 +2.0 7 894 MHz dB dB dBm mA IIP3 will improve if ICC is raised above 7mA. 2 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A0 DS070705 RF2374 Parameter Power Supply Voltage (VCC) Gain Select Low Gain Select High Power Down 1.8 0 5 3 0.8 V V V A High Gain mode. Gain Select<0.8V, VREF =3V Low Gain mode. Gain Select>1.8V, VREF =0V Gain Select<0.8V, VREF =0V, VCC =3.0V Min. Specification Typ. Max. Unit Condition 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. Rev A0 DS070705 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 8 RF2374 Pin 1 Function RF IN Description 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. RF IN Interface Schematic To Bias Circuit RF OUT 2 3 GND1 VREF 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 4 GAIN SELECT This pin selects high gain and bypass modes. Gain Select<0.8V, high gain. Gain Select>1.8V, low gain. See GND1. 5 GND2 6 7 8 Pkg Gnd RF OUT NC NC GND 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 INDEX AREA 2 PLCS 0.10 C 0.10 C 2 PLCS 0.63 0.53 0.152 REF 2.20 B A 2.20 0.65 0.05 0.00 SEATING PLANE C 0.10 MAX 1.20 TYP 1.00 0.28 0.18 0.31 0.21 Dimensions in mm. Shaded lead is pin 1. 0.10 M C A B 4 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A0 DS070705 RF2374 Evaluation Board Schematic WiBRO/WLAN/WiMAX (2.3GHz to 3.8GHz) P1 P1-1 1 2 P1-3 P1-4 3 4 CON4 C1 22 nF 1 8 7 6 C2 DNP C3 1.5 pF L1 1.5 nH C4 100 pF VCC GND GAIN SELECT VREF C5 10 nF VCC J1 RF IN 50 strip 50 strip J2 RF OUT 2 R1 1.8 k VREF 3 4 5 GAIN SELECT Evaluation Board Schematic GPS/PCS (1.5GHz to 2.2GHz) P1 P1-1 1 2 P1-3 P1-4 3 4 CON4 C1 22 nF 1 8 7 6 C2 DNP C3 1.8 pF L1 3.3 nH C4 100 pF VCC GND GAIN SELECT VREF C5 10 nF VCC J1 RF IN 50 strip 50 strip J2 RF OUT 2 R1 1.8 k VREF 3 4 5 GAIN SELECT Rev A0 DS070705 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 8 RF2374 Evaluation Board Schematic - 869MHz to 894MHz P1 P1-1 1 2 P1-3 P1-4 3 4 CON4 C1 22 nF 1 8 7 6 C2 3.9 pF L1 3.9 nH VCC GND GAIN SELECT VREF C5 10 nF C4 100 pF C3 10 pF VCC J1 RF IN 50 strip 50 strip J2 RF OUT 2 R1 1.8 k VREF 3 4 5 GAIN SELECT 6 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A0 DS070705 RF2374 Evaluation Board Layout Board Size 0.835" x 0.900" Board Thickness 0.032", Board Material FR-4 Rev A0 DS070705 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 8 RF2374 8 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 * For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. Rev A0 DS070705 |
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