RF2364 Preliminary 4 3V PCS LOW NOISE AMPLIFIER Typical Applications • CDMA PCS LNA • General Purpose Amplification • TDMA PCS LNA • Commercial and Consumer Systems • W-CDMA/CDMA2000 LNA Product Description 4 0.15 0.05 GENERAL PURPOSE AMPLIFIERS The RF2364 is a low noise amplifier with a high dynamic range designed for CDMA and TDMA PCS, as well as W-CDMA/CDMA2000 applications. The device functions as an outstanding front end low noise amplifier and the bias current can be set externally. The IC includes a power down feature used to completely turn-off the device and is featured in a standard SOT 5-lead plastic package. 1.60 + 0.01 0.400 1 2.90 + 0.10 0.950 2.80 + 0.20 3° MAX 0° MIN 1.44 1.04 Dimensions in mm. 0.127 0.45 + 0.10 Optimum Technology Matching® Applied ü Si BJT Si Bi-CMOS GaAs HBT GaAs MESFET SiGe HBT Si CMOS Package Style: SOT 5-Lead Features • Low Noise and High Intercept Point • 18dB Gain • Power Down Control RF IN 1 GND1 2 VPD 3 5 RF OUT • Single 3.0V Power Supply • PCS and W-CDMA Band Operation • 1.8GHz to 2.5GHz Operation 4 GND2 Ordering Information RF2364 RF2364 PCBA Functional Block Diagram Rev A4 010501 3V PCS Low Noise Amplifier Fully Assembled Evaluation Board RF Micro Devices, Inc. 7625 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com 4-209 RF2364 Preliminary Absolute Maximum Ratings Parameter Supply Voltage Input RF Level Storage Temperature Parameter Rating Unit -0.5 to +8.0 +10 -40 to +150 VDC dBm °C Specification Min. Typ. Max. 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). Unit Condition Operating Range GENERAL PURPOSE AMPLIFIERS 4 Overall Frequency Range Supply Voltage (VCC) Power Down Voltage (VPD) Current Consumption Power Down Current Operating Ambient Temperature Input Impedance Output Impedance 1930 2.7 2.7 3.0 17.0 -40 1990 3.3 2.9 0.9 23.5 10 +85 50 50 MHz V V V mA µA o C Ω Ω Low Noise Amplifier Performance Power Gain Noise Figure Input IP3 Input VSWR Output VSWR Input P1dB 4-210 For normal operation For power down operation VCC =3.0V, Values reflect ICC +IPD VCC =3.0V, VPD <0.9V T=25oC 18 1.8 +5 21 dB dB dBm 2:1 2:1 -8.5 VCC =3.0V, ICC =17mA VCC =3.0V With external matching components. dBm Rev A4 010501 RF2364 Preliminary Pin 1 Function RF IN Description RF input pin. This pin is DC coupled and matched to 50Ω. Interface Schematic To Bias Circuit RF OUT RF IN GND1 3 VPD 4 GND2 5 RF OUT Rev A4 010501 Ground connection. Keep traces physically short and connect immediately to ground plane for best performance. For low noise amplifier applications, this pin is used to control the bias current. See plots for bias current settings. An external resistor (R1) can be used to set the bias current for any VPD voltage (See Application Note). For driver amplifier applications, this is the Power Down pin for the IC. VPD =2.8V + 0.1V is required for proper operation. VPD< 0.9V turns off the Part. External RF 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. Nominal current required for VPD =2.8V is 2.0mA typical and 3.0mA Max (@ VPD =2.9V). PD 4 GENERAL PURPOSE AMPLIFIERS 2 Ground connection. Keep traces physically short and connect immediately to ground plane for best performance. Amplifier Output pin. This pin is an open-collector output. It must be biased to either VCC or pin 4 through a choke or matching inductor. This pin is typically matched to 50Ω with a shunt bias/matching inductor and series blocking/matching capacitor. Refer to application schematics. 4-211 RF2364 Preliminary Application Notes Power Down Pin Resistor The Power Down pin (pin 3) of the RF2364 3V Low Noise Amplifier should be maintained at 2.7V to 2.9V for proper operation. This voltage range ensures the correct bias current will be present at the Power Down pin of the device. However, an external series resistor may be used to allow various operating voltages at this pin (see R1 in Application Schematics). The required value for this resistor may be roughly calculated by using the operating input voltage to the Power Down pin, the desired voltage at the device, and the typical current consumption for the Power Down pin, along with Ohms law. GENERAL PURPOSE AMPLIFIERS 4 For example, assume the design will supply 3.3V to the Power Down pin of the device, but the biasing circuitry internal to the RF2364 requires 2.8V, and the power down bias current is known to typically be 5.5mA, then the required value from R1 would be found from: 3.3V – 2.8V---------------------------= 90.9Ω 5.5mA 4-212 Rev A4 010501 RF2364 Preliminary Application Schematic PCS Band VCC 10 nF 4.7 nH 15 nF RF IN 1 5 RF OUT 1.5 pF 1.5 pF 2 4 8.2 nH 3 Optional See Application Notes 4 10 nF GENERAL PURPOSE AMPLIFIERS R1 VPD 3.3 nH Application Schematic W-CDMA Band VCC 4.7 nH 47 pF RF IN 10 nF 1 5 RF OUT 1 pF 2 R1 8.2 nH VPD 3 Optional See Application Notes Rev A4 010501 4 10 nF 4-213 RF2364 Preliminary Evaluation Board Schematic - PCS Band (Download Bill of Materials from www.rfmd.com.) P2 P1 P1-2 1 GND 2 VCC P2-2 1 GND 2 VPD VCC C2 10 nF 4 GENERAL PURPOSE AMPLIFIERS J1 RF IN 50 Ω µstrip L2 4.7 nH C1 15 nF 1 50 Ω µstrip 5 C3 1.5 pF C4 1.5 pF J2 RF OUT 2 L1 8.2 nH VPD 3 C5 10 nF 4 L3 3.3 nH 2364400- 4-214 Rev A4 010501 RF2364 Preliminary Evaluation Board Layout Board Size 1” x 1” Board Thickness 0.031”; Board Material FR-4 GENERAL PURPOSE AMPLIFIERS 4 Rev A4 010501 4-215 RF2364 Preliminary Gain versus VCC VPD=2.8V, Frequency=1960MHz IIP3 versus VCC VPD=2.8V, Frequency=1960MHz 19.00 6.50 18.50 6.00 18.00 5.50 IIP3 (dBm) Gain (dB) 17.50 17.00 16.50 4 5.00 4.50 4.00 16.00 IIP3, -30º GENERAL PURPOSE AMPLIFIERS Gain, -30º 15.50 IIP3, 25º 3.50 Gain, 25º IIP3, 85º Gain, 85º 3.00 15.00 2.7 2.8 2.9 3 3.1 3.2 2.7 3.3 2.8 2.9 Noise Figure versus VCC VPD=2.8V, Frequency=1960MHz 3.1 3.2 3.3 Input P1dB versus VCC VPD=2.8V, Frequency=1960MHz 2.3 -7.90 2.1 -8.00 -8.10 1.9 -8.20 Input P1dB (dBm) 1.7 NF (dB) 3 VCC (V) VCC (V) 1.5 1.3 1.1 -8.30 P1dB, -30º -8.40 P1dB, 25º -8.50 P1dB, 85º -8.60 NF, -30º 0.9 -8.70 NF, 25º 0.7 -8.80 NF, 85º 0.5 -8.90 2.7 2.8 2.9 3 3.1 3.2 3.3 2.7 2.8 2.9 VCC (V) 3 3.1 3.2 3.3 VCC (V) ICC versus VCC VPD=2.8V, Frequency=1960MHz Gain versus VPD VCC=3.0V, Frequency=1960MHz 9.20 19.00 9.00 18.50 8.80 18.00 Icc, -30º Gain (dB) ICC (mA) 8.60 Icc, 25º 8.40 Icc, 85º 17.50 Gain, -30º 17.00 Gain, 25º 8.20 Gain, 85º 16.50 8.00 16.00 7.80 7.60 15.50 2.7 2.8 2.9 3 VCC (V) 4-216 3.1 3.2 3.3 2.7 2.75 2.8 2.85 2.9 VPD (V) Rev A4 010501 RF2364 Preliminary IIP3 versus VPD VCC=3.0V, Frequency=1960MHz Noise Figure versus VPD VCC=3.0V, Frequency=1960MHz 6.00 2.20 5.80 2.00 5.60 NF, -30º 5.40 NF, 25º NF, 85º 5.20 NF (dB) 5.00 4.80 1.40 4.60 4 IIP3, -30º 4.40 IIP3, 25º 1.20 IIP3, 85º 4.20 4.00 1.00 2.7 2.75 2.8 2.85 2.9 2.7 2.75 2.8 2.85 VPD (V) VPD (V) P1dB versus VPD VCC=3.0V, Frequency=1960MHz IPD versus VPD VCC=3.0V, Frequency=1960MHz -7.40 6.00 -7.60 5.80 -7.80 5.60 -8.00 5.40 -8.20 5.20 IPD (mA) Input P1dB (dBm) 1.60 GENERAL PURPOSE AMPLIFIERS IIP3 (dBm) 1.80 -8.40 -8.60 2.9 5.00 4.80 P1dB, -30º -8.80 4.60 Ipd, -30º P1dB, 25º -9.00 Ipd, 25º 4.40 P1dB, 85º Ipd, 85º -9.20 4.20 -9.40 4.00 2.7 2.75 2.8 2.85 2.9 2.7 2.75 2.8 VPD (V) Gain versus Frequency VCC=3.0V, VPD=2.8V 19.00 1.85 18.50 1.8 18.00 1.75 17.50 Gain, -30º 17.00 1.7 S11, -30º 1.65 Gain, 25º S11, 25º Gain, 85º S11, 85º 16.50 16.00 1930 1.6 1940 1950 1960 1970 Frequency (MHz) Rev A4 010501 2.9 Input Impedance versus Frequency VCC=3.0V, VPD=2.8V Input VSWR Gain (dB) 2.85 VPD (V) 1980 1990 1.55 1930 1940 1950 1960 1970 1980 1990 Frequency (MHz) 4-217 RF2364 Preliminary Output Impedance versus Frequency VCC=3.0V, VPD=2.8V 1.55 1.5 Output VSWR S22, -30º 4 S22, 25º 1.45 S22, 85º 1.4 GENERAL PURPOSE AMPLIFIERS 1.35 1.3 1930 1940 1950 1960 1970 1980 1990 Frequency (MHz) 4-218 Rev A4 010501