RF2641 6 CDMA UPCONVERTER/BPSK MODULATOR Typical Applications • PCS/Cellular CDMA Systems • BPSK Modulation • PHS 1500/ WLAN 2400 Systems • Micro-Cell PCS Base Stations • General Purpose Upconverter • Portable Battery-Powered Equipment Product Description 0.006 + 0.003 0.192 + 0.008 0.012 0.118 + 0.004 sq. 0.021 + 0.004 Optimum Technology Matching® Applied üSi Bi-CMOS GaAs HBT GaAs MESFET SiGe HBT Si CMOS 6 0.0256 0.034 6° MAX 0° MIN Si BJT -A- 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 • Supports Dual Mode Operation • +5.5dBm Output Intercept Point • 7dB Conversion Gain (836MHz) IF- 1 8 RF OUT IF+ 2 7 VCC BYP 3 6 GND LO- 4 5 LO+ • Single 3.0V Power Supply • Miniature 8 Pin Package • Double-Balanced Mixer Ordering Information RF2641 RF2641 PCBA Functional Block Diagram Rev A5 010720 CDMA Upconverter/BPSK Modulator 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 6-41 MIXERS 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. RF2641 Absolute Maximum Ratings Parameter Supply Voltage Input RF Power Operating Ambient Temperature Storage Temperature Parameter Rating Unit -0.5 to +5.0 +3 -30 to +80 -30 to +150 VDC dBm °C °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 T=25°C, VCC =3.0V, IF=130MHz Overall RF Output Frequency Range Conversion Gain 5 Noise Figure 6 Output IP3 Condition +3 Spurious Product Rejection 500 to 2500 7 4 10 11 +5.5 +4 30 MHz dB dB dB dB dBm DC to 300 260 30 30 MHz Ω dB dB 300 to 2700 -6 to 0 -20 30 2:1 MHz dBm dBm dB dBc 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 MIXERS 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 50Ω Power Supply Voltage Current Consumption 6-42 2.7 to 3.3 13 16 V mA Rev A5 010720 RF2641 Pin 1 2 3 Function IF- IF+ BYP Description 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 260Ω. Same as pin 1, except complementary input. Interface Schematic BIAS 130 Ω 130 Ω IF- IF+ See Pin 1. Bypass pin for internal bias circuitry. Bypass with a 1nF capacitor. BYP LO- 5 6 LO+ GND 7 VCC 8 RF OUT 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 50Ω. Same as pin 4, except complementary input. BIAS 6 LO- LO+ MIXERS 4 See Pin 4. 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. 300 Ω RF OUT Rev A5 010720 6-43 RF2641 Application Schematic 836MHz VCC 10 nF 12 nH 1 nF IF- 2 pF 1 8 2 7 3 6 4 5 VCC 1 nF IF+ RF OUT 10 nF 1 nF 12 pF LO 12 pF 6 MIXERS Application Schematic 1880MHz VCC 2.7 nH 1 nF IF- 10 nF 1.5 pF 1 8 2 7 3 6 4 5 VCC 1 nF IF+ RF OUT 10 nF 1 nF 12 pF LO 12 pF 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 VCC 2 GND 3 C7 10 nF VCC 50 Ω µstrip C2 1 nF T1 T4-1 L1 270 nH J1 LO C2 1 nF 50 Ω µstrip L2 2.7 nH 1 8 2 7 3 6 4 5 C6 1.5 pF 50 Ω µstrip J3 RF OUT C1 10 nF 6 C3 12 pF C4 12 pF MIXERS J2 IF IN 2641400, R- Evaluation Board Schematic Cellular Board P1 Cellular Board P1-1 1 VCC 2 GND 3 C7 10 nF VCC J2 IF IN 50 Ω µstrip C2 1 nF T1 T4-1 L1 270 nH J1 LO 50 Ω µstrip C2 1 nF L2 12 nH 1 8 2 7 3 6 4 5 C6 2 pF 50 Ω µstrip J3 RF OUT C1 10 nF C3 12 pF C4 12 pF 2641401, R- Rev A5 010720 6-45 RF2641 Evaluation Board Layout Board Thickness 0.014”; Board Material FR-4 MIXERS 6 6-46 Rev A5 010720