RF2324 4 PCS CDMA/TDMA 3V PA DRIVER AMPLIFIER Typical Applications • TDMA/CDMA/FM PCS Tx Amplifier • ISM Band LNA/Driver • Low Noise Transmit Driver Amplifier • General Purpose Amplification • 2.4GHz WLAN Systems • Commercial and Consumer Systems Product Description 4 0.012 0.118 + 0.004 sq. Si Bi-CMOS ü GaAs MESFET SiGe HBT Si CMOS 0.034 6° MAX 0° MIN Optimum Technology Matching® Applied GaAs HBT -A- 0.0256 0.021 + 0.004 Si BJT GENERAL PURPOSE AMPLIFIERS The RF2324 is a low noise CDMA/TDMA PA driver amplifier with a very high dynamic range designed for transmit digital PCS applications at 1880MHz. The device functions as an outstanding PA driver amplifier in the transmit chain of digital subscriber units where low transmit noise power is a concern. The IC includes a power down feature that can be used to completely turn off the device. 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 • Power Down Control • Single 2.5V to 6.0V Power Supply PD 1 8 GND2 • 150MHz to 2500MHz Operation NC 2 7 RF OUT • Extremely Small MSOP-8 Package RF IN 3 6 GND2 GND1 4 5 GND2 Ordering Information RF2324 RF2324 PCBA Functional Block Diagram Rev A6 010717 PCS CDMA/TDMA 3V PA Driver Amplifier Fully Assembled Evaluation Board RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com 4-115 RF2324 Absolute Maximum Ratings Parameter Supply Voltage Input RF Level Operating Ambient Temperature Storage Temperature Parameter Rating Unit -0.5 to +8.0 +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 150 to 2500 MHz Condition Overall GENERAL PURPOSE AMPLIFIERS 4 RF Frequency Range 1880MHz Performance Gain Output IP3 21 21 21 +26 Noise Figure Reverse Isolation Input VSWR Output VSWR P1dB 22 22 22 +28 +26 +25 1.8 1.8 1.8 36 36 35 1.3:1 1.25:1 23 23 23 +35 2.5 2.5 2.5 dB dB dB dBm dBm dBm dB dB dB dB dB dB 2.0:1 2.0:1 14 12.5 11 16 14.5 13 dBm dBm dBm 2.7 24 2.5 to 6.0 2.8 33 2.9 43 V V mA 24 29 31 36 38 43 10 mA mA µΑ Power Supply Voltage (VCC) Voltage (VPD) Current Consumption - Power Down 4-116 Schematic per Evaluation Board, T = 25°C, RF=1880MHz, VPD =2.8V VCC =3.5V VCC =3.0V VCC =2.5V VCC =3.5V VCC =3.0V VCC =2.5V VCC =3.5V VCC =3.0V VCC =2.5V VCC =3.5V VCC =3.0V VCC =2.5V Using External LC network used on Evaluation Board VCC =3.5V VCC =3.0V VCC =2.5V T = 25 °C VCC =3.5V; VPD =2.8 V; VPD + VCC - Current Consumption from VPD is 8.5 mA Typ. @ VPD = 2.8V and 12 mA Max @ VPD =2.9 V VCC =3.0V; VPD =2.7V; VPD + VCC VCC =2.5V; VPD =2.9V; VPD + VCC VCC =3.5V; VPD ≤ 0.9V Rev A6 010717 RF2324 Pin 1 Function PD 2 3 NC RF IN Description Interface Schematic Power down for the IC. VPD = 2.8V +/- 0.1V turns on the part. 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 8.5 mA typical and 12 mA Max (@ VPD =2.9 V). PD No connection. This pin is typically left unconnected or grounded. RF input pin. This pin is DC-coupled and matched to 50Ω at 1880MHz. PD RF IN 4 GND1 5 6 GND2 GND2 7 RF OUT 8 GND2 Rev A6 010717 4 GENERAL PURPOSE AMPLIFIERS TO OUTPUT STAGE Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. See pin 6. Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. Amplifier Output pin. This pin is an open-collector output. It must be biased to either VCC or pin 7 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. See pin 6. 4-117 RF2324 Application Schematic: ~1880 MHz Operation, Internal Collector Bias VCC V P D (2.8 V +/-0.1V ) 10 nF 10 nF 220 pF NC 4 1 8 2 7 220 pF 4.7 nH VO UT 1.0 pF 10 pF GENERAL PURPOSE AMPLIFIERS R F IN 3 6 4 5 Evaluation Board Schematic (Download Bill of Materials from www.rfmd.com.) P1 P1-1 P1-3 1 VPD 2 GND 3 VCC C7 4.7 µF R1 0Ω C2 10 nF PD J1 RF IN 50 Ω µstrip C5 220 pF C1 220 pF C3 10 pF C6 10 nF VCC 1 8 2 7 3 6 4 5 L1 4.7 nH C4 1 pF 50 Ω µstrip J2 RF OUT 2324400A 4-118 Rev A6 010717 RF2324 Evaluation Board Layout Board Size 1” x 1” Board Thickness 0.031”; Board Material FR-4; Multi-Layer GENERAL PURPOSE AMPLIFIERS 4 Rev A6 010717 4-119 RF2324 RF2324 Bias Current versus Rc RF2324 Gain versus Bias Current 22.5 45 Vcc = 2.7 V Vcc = 3.0 V Vcc = 3.3 V Vcc = 3.6 V 40 4 21.5 30 21.0 Gain (dB) Bias Current (mA) 35 25 20 20.5 20.0 15 19.5 10 GENERAL PURPOSE AMPLIFIERS Vcc = 2.7 V Vcc = 3.0 V Vcc = 3.3 V Vcc = 3.6 V 22.0 19.0 5 0 18.5 0 100 200 300 400 500 0 600 5 10 15 Rs (Ω) 20 25 30 35 40 45 40 45 Bias Current (mA) RF2324 Noise Figure versus Bias Current RF2324 OIP3 versus Bias Current 31 1.8 Vcc = 2.7 V Vcc = 3.0 V Vcc = 3.3 V Vcc = 3.6 V 1.7 Vcc = 2.7 V Vcc = 3.0 V Vcc = 3.3 V Vcc = 3.6 V 29 25 OIP3 (dBm) Noise Figure (dB) 27 1.6 1.5 23 21 1.4 19 1.3 17 1.2 15 0.0 5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 Bias Current (mA) 0 5 10 15 20 25 30 35 Bias Current (mA) RF2324 IIP3 versus Bias Current 8 Vcc = 2.7 V Vcc = 3.0 V Vcc = 3.3 V Vcc = 3.6 V 7 6 5 IIP3 (dBm) 4 3 2 1 0 -1 -2 -3 0 5 10 15 20 25 30 35 40 45 Bias Current (mA) 4-120 Rev A6 010717