RF2638 6 W-CDMA AND CDMA UPCONVERTER/ BPSK MODULATOR Typical Applications • W-CDMA Systems • General Purpose Upconverter • PCS/Cellular CDMA Systems • BPSK Modulation • PHS 1500/WLAN 2400 Systems • Micro-Cell PCS Base Stations Product Description 0.006 + 0.003 0.192 + 0.008 0.012 -A- 6 0.0256 0.118 + 0.004 sq. 0.034 6° MAX 0° MIN 0.021 + 0.004 Optimum Technology Matching® Applied ü Si BJT GaAs HBT GaAs MESFET Si Bi-CMOS SiGe HBT Si CMOS 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 • +10dBm Output IP3 (1950MHz) • +13dBm Output IP3 (830MHz) IF- 1 8 RF OUT • Single 3.0V Power Supply IF+ 2 7 VCC • Miniature 8-Pin Package BYP 3 6 GND • Double-Balanced Mixer 5 LO+ LO- 4 Ordering Information RF2638 W-CDMA and CDMA Upconverter/ BPSK Modulator RF2638 PCBA-PCS/CEL Fully Assembled Evaluation Board RF2638 PCBA-DO Fully Assembled Evaluation Board RF2638 PCBA-W Fully Assembled Evaluation Board Functional Block Diagram Rev B13 010731 RF Micro Devices, Inc. 7625 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com 6-25 MIXERS The RF2638 is a complete upconverter designed for cellular, PCS and W-CDMA 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 and W-CDMA Chip Sets. RF2638 Absolute Maximum Ratings Parameter Supply Voltage Input RF Power Operating Ambient Temperature Storage Temperature Rating Unit -0.5 to +5.0 +3 -30 to +80 -30 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 500 to 2500 30 MHz dBc -1 -2.2 -0.5 -1 14 +13 dB dB dB dBm -3.0 -3.5 +7 -1.5 -2.5 15 +11 dB dB dB dBm ACPR Conversion Gain -58 -2.0 -57 -1.0 -56 0 dBc dB Noise Figure Output IP3 Max OIP3 13 +8 14 +10 15 dB dBm dBm Parameter T=25°C, VCC =3.0V Overall RF Output Frequency Range Spurious Product Rejection Cellular Conversion Gain MIXERS 6 Noise Figure Output IP3 PCS Conversion Gain Noise Figure Output IP3 Condition W-CDMA 11 Referenced to RF output T=25°C, VCC =3.0V, LO=960MHz@ -3dBm, IF=130MHz@-13dBm RFOUT =830MHz RFOUT =836MHz (Dual-Output board) RFOUT =830MHz PIN =-13dBm per Tone, RF out=830MHz T=25°C, VCC =3.0V, LO=1750MHz@-3dBm, IF=130MHz@-13dBm RFOUT =1880MHz RFOUT =1880MHz (Dual-Output board) RFOUT =1880MHz PIN =-13dBm per Tone, RF out=1880MHz T=25°C, VCC =3.0V, LO=2330MHz@-3dBm, IF=380MHz@-13dBm RFOUT =1950MHz RFOUT =1950MHz PIN =-13dBm per Tone, RFOUT =1950MHz IF Input IF Frequency Differential Input Impedance IF to RF Output Isolation IF to LO Isolation DC 220 130/380 260 30 30 500 300 MHz Ω dB dB IF=130MHz LO Input LO Frequency Range LO Level LO to RF Output Leakage -18 -15 300 to 2700 -6 to 0 -25 -17 MHz dBm dBm dBm -14 -15 dBm 30 2:1 dB RF to LO Isolation LO Input VSWR At Cellular band, high side injection (Dual-Output board) At PCS band, low side injection (Dual-Output board) 50Ω Power Supply Voltage Current Consumption 6-26 2.7 3.0 25 3.3 V mA Rev B13 010731 RF2638 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, 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 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. BIAS 5 6 LO+ GND 7 VCC 8 RF OUT Same as pin 4, except complementary input. LO+ MIXERS LO- 6 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 B13 010731 6-27 RF2638 Application Schematic 836MHz VCC 10 nF 12 nH IF- 1 8 1 nF IF+ 2 7 3 6 4 5 RF OUT VCC 1 nF 2 pF 10 nF 1 nF LO 22 pF 22 pF Application Schematic 1880MHz 6 MIXERS VCC 10 nF 2.7 nH 1 nF IF- 1 8 1 nF IF+ 2 7 3 6 4 5 1 nF RF OUT VCC 1.5 pF 10 nF 5 pF LO 5 pF 6-28 Rev B13 010731 RF2638 Application Schematic Dual-Band Output (836MHz/1880MHz) VC C 10 nF 100 nH 6.8 nH 0.5 pF PCS OUT 1 nF IF- 1 8 2 7 4 pF VCC 5.6 nH 1 nF IF+ 18 nH 10 nF 1 nF 3 6 4 5 5 pF LO CELL OUT 5 pF 6 MIXERS Application Schematic W-CDMA (1950MHz) VCC 10 nF 4.7 nH 9 pF 1 nF IF- W-CDMA OUT 1 8 2 7 3 6 4 5 VCC 1 nF IF+ 1 nF 10 nF 5 pF LO 5 pF Rev B13 010731 6-29 RF2638 Evaluation Board Schematic - PCS/Cellular RF=1880MHz, IF=130MHz (Download Bill of Materials from www.rfmd.com.) C7 10 nF VCC J2 IF IN 50 Ω µstrip L2 * C5 68 pF T1 1 L1 270 nH 6 J1 LO IN 2 7 3 6 4 5 C3* PCS** 2.7 nH 5 pF Cellular 12 nH 22 pF C4* C6* 5 pF 22 pF 1.5 pF 2 pF J3 RF OUT C6 * VCC C1 10 nF C4 * C3 * L2* MIXERS C2 1 nF 50 Ω µstrip 50 Ω µstrip 8 P1 2638400- P1-1 Note: Board losses: 0.1 dB, Transformer losses: 1 dB 1 VCC 2 GND 3 NC CON3 **Board as provided. Evaluation Board Schematic - Dual Output Cellular Out=836MHz, PCS Out=1880MHz, IF=130MHz Bias Choke Only; Not part of matching network VCC C7 10 nF P1 T1 T4-1 J2 IF IN 50 Ω µstrip 50 Ω µstrip P1-2 C5 100 pF L1* TBD J1 LO IN C9* TBD 1 NC 2 VCC 3 GND L2 100 nH C8 4 pF CON3 C10* TBD C2 1 nF C3 5 pF 1 8 2 7 3 6 4 L3 6.8 nH C6 0.5 pF 50 Ω µstrip J3 PCS OUT L5 5.6 nH Dual Band, Split Outputs matching network: Diplexed match at US cellular and PCS transmit bands. L4 18 nH 50 Ω µstrip J4 CELL OUT VCC C1 10 nF 5 C4 5 pF Note: Board losses: 0.1 dB, Transformer loss: 1 dB 2638401, Rev 1 6-30 Rev B13 010731 RF2638 Evaluation Board Schematic - W-CDMA RF=1950MHz, IF=380MHz P1 P1-2 380 MHz Matching Network T1 T4-1 J2 IF IN J1 LO IN 50 Ω µstrip 50 Ω µstrip C5 15 pF C2 1 nF C3 5 pF 1 NC 2 VCC 3 GND Output Matching RF = 1950 MHz C7 10 nF CON3 VCC L2 4.7 nH 1 8 2 7 3 6 4 5 C6 9 pF L3 0 Ω 50 Ω µstrip J3 W-CDMA OUT VCC C1 10 nF C4 5 pF 6 2638402, Rev - MIXERS Note: Board losses: 0.1 dB, Transformer loss: 1.62 dB Rev B13 010731 6-31 RF2638 Evaluation Board Layout PCS/Cellular Board Size 2.0” x 2.0” Board Thickness 0.031”, Board Material FR-4 MIXERS 6 6-32 Rev B13 010731 RF2638 Evaluation Board Layout Dual Output Board Size 2.5” x 1.0” Board Thickness 0.060”, Board Material FR-4, Multi-Layer (Intermediate layers (Ground Plane and Power Plane [VCC1]) are not shown.) MIXERS 6 Rev B13 010731 6-33 RF2638 Evaluation Board Layout W-CDMA Board Size 2.5” x 1.0” Board Thickness 0.060”, Board Material FR-4, Multi-Layer (Intermediate layers (Ground Plane and Power Plane [VCC1]) are not shown.) MIXERS 6 6-34 Rev B13 010731