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| RF2324 0 RoHS Compliant & Pb-Free Product Typical Applications * TDMA/CDMA/FM PCS Tx Amplifier * Low Noise Transmit Driver Amplifier * 2.4GHz WLAN Systems Product Description 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. 6 MAX 0 MIN 0.192 0.008 0.012 0.006 0.003 -A- PCS CDMA/TDMA 3V PA DRIVER AMPLIFIER * ISM Band LNA/Driver * General Purpose Amplification * Commercial and Consumer Systems 0.0256 0.118 0.004 sq 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 * Power Down Control * Single 2.5V to 6.0V Power Supply * 150MHz to 2500MHz Operation * Extremely Small MSOP-8 Package PD NC 1 2 8 7 6 5 GND2 RF OUT GND2 GND2 RF IN 3 GND1 4 Ordering Information RF2324 PCS CDMA/TDMA 3V PA Driver Amplifier RF2324PCBA-41X Fully Assembled Evaluation Board Functional Block Diagram RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com Rev A8 060918 4-243 RF2324 Absolute Maximum Ratings Parameter Supply Voltage Input RF Level Operating Ambient Temperature Storage Temperature Rating -0.5 to +8.0 +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. 150 to 2500 Unit MHz Condition 1880MHz Performance Gain 20 20 20 +26 22 22 22 +28 +26 +25 1.8 1.8 1.8 36 36 35 1.3:1 1.25:1 16 14.5 13 2.5 to 6.0 2.8 33 23 23 23 +35 dB dB dB dBm dBm dBm dB dB dB dB dB dB Output IP3 Noise Figure 2.5 2.5 2.5 Reverse Isolation Schematic per Evaluation Board, T = 25C, 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 Input VSWR Output VSWR P1dB 14 12.5 11 2.0:1 2.0:1 dBm dBm dBm V V mA Power Supply Voltage (VCC) Voltage (VPD) Current Consumption 2.7 24 2.9 43 24 29 - Power Down 31 36 38 43 10 mA mA 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 4-244 Rev A8 060918 RF2324 Pin 1 Function PD Description 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). No connection. This pin is typically left unconnected or grounded. RF input pin. This pin is DC-coupled and matched to 50 at 1880MHz. PD Interface Schematic PD 2 3 NC RF IN TO OUTPUT STAGE RF IN 4 5 6 7 GND1 GND2 GND2 RF OUT 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 50 with a shunt bias/matching inductor and series blocking/matching capacitor. Refer to application schematics. See pin 6. 8 GND2 Rev A8 060918 4-245 RF2324 Application Schematic: ~1880 MHz Operation, Internal Collector Bias VPD (2.8 V +/-0.1V) 10 nF VCC 10 nF 220 pF 1 NC 10 pF RF IN 3 4 6 5 2 8 7 220 pF 4.7 nH VOUT 1.0 pF Evaluation Board Schematic (Download Bill of Materials from www.rfmd.com.) P1 P1-1 1 2 P1-3 C7 4.7F 3 VPD GND VCC R1 0 PD C2 10 nF C1 220 pF 1 C3 10 pF 2 3 4 8 7 6 5 C5 220 pF L1 4.7 nH C4 1 pF C6 10 nF VCC 50 strip J2 RF OUT J1 RF IN 50 strip 2324400A 4-246 Rev A8 060918 RF2324 Evaluation Board Layout Board Size 1" x 1" Board Thickness 0.031"; Board Material FR-4; Multi-Layer Rev A8 060918 4-247 RF2324 RF2324 Bias Current versus Rc 45 40 35 30 21.0 25 20 15 10 5 0 0 100 200 300 400 500 600 19.5 Vcc = 2.7 V Vcc = 3.0 V Vcc = 3.3 V Vcc = 3.6 V 22.5 Vcc = 2.7 V 22.0 RF2324 Gain versus Bias Current 21.5 Bias Current (mA) Gain (dB) 20.5 20.0 19.0 18.5 0 5 10 15 20 25 30 35 40 45 Rs () Bias Current (mA) 4-248 Rev A8 060918 |
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