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| RF2641 6 Typical Applications * PCS/Cellular CDMA Systems * PHS 1500/ WLAN 2400 Systems * General Purpose Upconverter * BPSK Modulation * Micro-Cell PCS Base Stations * Portable Battery-Powered Equipment CDMA UPCONVERTER/BPSK MODULATOR Product Description The RF2641 is a complete upconverter designed for cellular and PCS applications. This device may also be used to directly BPSK modulate a carrier. The unit operates at 3.0V and is designed as part of the RFMD PCS/Cellular CDMA Chip Set, consisting of a Transmit IF AGC Amp, this Transmit Upconverter, a Receive LNA/Mixer, and a Receive IF AGC Amp. 6 MAX 0 MIN 0.192 + 0.008 0.012 0.006 + 0.003 -A- 0.0256 6 MIXERS 0.034 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". 0.118 + 0.004 sq. 0.021 + 0.004 0.006 + 0.002 Optimum Technology Matching(R) Applied Package Style: MSOP-8 uSi Bi-CMOS Si BJT GaAs HBT SiGe HBT GaAs MESFET Si CMOS Features * Supports Dual Mode Operation * +5.5dBm Output Intercept Point * 7dB Conversion Gain (836MHz) * Single 3.0V Power Supply * Miniature 8 Pin Package * Double-Balanced Mixer IF- 1 IF+ 2 BYP 3 LO- 4 8 RF OUT 7 VCC 6 GND 5 LO+ Ordering Information RF2641 RF2641 PCBA CDMA Upconverter/BPSK Modulator 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 A5 010720 6-41 RF2641 Absolute Maximum Ratings Parameter Supply Voltage Input RF Power Operating Ambient Temperature Storage Temperature Rating -0.5 to +5.0 +3 -30 to +80 -30 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. 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 Output Frequency Range Conversion Gain Noise Figure Output IP3 Spurious Product Rejection Specification Min. Typ. Max. 500 to 2500 7 4 10 11 +5.5 +4 30 DC to 300 260 30 30 300 to 2700 -6 to 0 -20 30 2:1 2.7 to 3.3 13 Unit MHz dB dB dB dB dBm dBc MHz dB dB MHz dBm dBm dB 50 V mA Condition T=25C, VCC =3.0V, IF=130MHz 5 6 MIXERS +3 RF out=836MHz, LO=-3dBm@960MHz RF out=1880MHz, LO=-3dBm@2010MHz RF out=836MHz RF out=1880MHz PIN =-18dBm per Tone, RF out=836MHz PIN =-18dBm per Tone, RF out=1880MHz Referenced to RF output IF Input IF Frequency Differential Input Impedance IF to RF Output Isolation IF to LO Isolation LO Input LO Frequency Range LO Level LO to RF Output Leakage RF to LO Isolation LO Input VSWR -15 Power Supply Voltage Current Consumption 16 6-42 Rev A5 010720 RF2641 Pin 1 Function IFDescription Balanced IF input pin. This pin is internally DC-biased and should be DC-blocked if connected to a device with a DC level present. For singleended input operation, one pin is used as an input and the other IF input is AC-coupled to ground. The balanced, as well as single-ended, input impedance is 260. Interface Schematic BIAS 130 IF130 IF+ 2 3 IF+ BYP Same as pin 1, except complementary input. Bypass pin for internal bias circuitry. Bypass with a 1nF capacitor. See Pin 1. BYP 4 LO- Balanced LO input pin. This pin is internally DC-biased and should be DC-blocked if connected to a device with a DC level present. For singleended input operation, one pin is used as an input and the other LO input is AC-coupled to ground. The balanced, as well as single-ended, input impedance is 50. BIAS 6 LOLO+ 5 6 7 LO+ GND VCC Same as pin 4, except complementary input. Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. Supply voltage pin. External bypassing is required. External RF, LO, and IF 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. RF output pin. See Pin 4. 8 RF OUT 300 RF OUT Rev A5 010720 6-43 MIXERS RF2641 Application Schematic 836MHz VCC 10 nF 2 pF 1 1 nF IF+ 1 nF 3 12 pF LO 4 5 12 pF 6 2 7 10 nF 8 VCC RF OUT 12 nH 1 nF IF- 6 MIXERS Application Schematic 1880MHz VCC 2.7 nH 1 nF IF1 nF IF+ 1 nF 3 12 pF LO 4 5 12 pF 6 2 7 10 nF 1 8 1.5 pF VCC RF OUT 10 nF 6-44 Rev A5 010720 RF2641 Evaluation Board Schematic PCS Board (Download Bill of Materials from www.rfmd.com.) P1 PCS Board P1-1 1 2 3 VCC C2 1 nF L1 270 nH C7 10 nF C6 1.5 pF VCC GND J2 IF IN 50 strip T1 T4-1 1 2 C2 1 nF C3 12 pF 3 4 8 7 6 5 L2 2.7 nH 50 strip J3 RF OUT C1 10 nF J1 LO 50 strip 6 C4 12 pF 2641400, R- Evaluation Board Schematic Cellular Board P1 Cellular Board P1-1 1 2 3 VCC C2 1 nF L1 270 nH C7 10 nF C6 2 pF VCC GND J2 IF IN 50 strip T1 T4-1 1 2 C2 1 nF C3 12 pF 3 4 8 7 6 5 L2 12 nH 50 strip J3 RF OUT C1 10 nF J1 LO 50 strip C4 12 pF 2641401, R- Rev A5 010720 6-45 MIXERS RF2641 Evaluation Board Layout Board Thickness 0.014"; Board Material FR-4 6 MIXERS 6-46 Rev A5 010720 |
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