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| RF2638 0 RoHS Compliant & Pb-Free Product Typical Applications * W-CDMA Systems * PCS/Cellular CDMA Systems * PHS 1500/WLAN 2400 Systems Product Description 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. 0.192 + 0.008 0.012 0.006 + 0.003 -A- W-CDMA AND CDMA UPCONVERTER/ BPSK MODULATOR * General Purpose Upconverter * BPSK Modulation * Micro-Cell PCS Base Stations 0.0256 0.118 + 0.004 sq. 6 MAX 0 MIN 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". 0.021 + 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 * Supports Dual Mode Operation * +10dBm Output IP3 (1950MHz) * +13dBm Output IP3 (830MHz) * Single 3.0V Power Supply * Miniature 8-Pin Package * Double-Balanced Mixer IFIF+ 1 2 8 7 6 5 RF OUT VCC GND LO+ BYP 3 LO4 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 RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://www.rfmd.com Functional Block Diagram Rev B15 060921 6-27 RF2638 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. 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 Output Frequency Range Spurious Product Rejection Specification Min. Typ. Max. 500 to 2500 30 Unit MHz dBc Condition T=25C, VCC =3.0V Referenced to RF output T=25C, 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=25C, 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=25C, VCC =3.0V, LO=2330MHz@-3dBm, IF=380MHz@-13dBm RFOUT =1950MHz RFOUT =1950MHz PIN =-13dBm per Tone, RFOUT =1950MHz Cellular Conversion Gain Noise Figure Output IP3 -1 -2.2 -0.5 -1 14 +13 dB dB dB dBm PCS Conversion Gain Noise Figure Output IP3 -3.0 -3.5 +7 -1.5 -2.5 15 +11 dB dB dB dBm W-CDMA ACPR Conversion Gain Noise Figure Output IP3 Max OIP3 -58 -2.0 13 +8 -57 -1.0 14 +10 -56 0 15 11 DC 220 130/380 260 30 30 300 to 2700 -6 to 0 -25 -17 -15 30 2:1 2.7 3.0 25 3.3 500 300 dBc dB dB dBm dBm MHz dB dB MHz dBm dBm dBm dBm dB IF Input IF Frequency Differential Input Impedance IF to RF Output Isolation IF to LO Isolation IF=130MHz LO Input LO Frequency Range LO Level LO to RF Output Leakage -18 -15 -14 At Cellular band, high side injection (Dual-Output board) At PCS band, low side injection (Dual-Output board) 50 RF to LO Isolation LO Input VSWR Power Supply Voltage Current Consumption V mA 6-28 Rev B15 060921 RF2638 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, 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. LO- BIAS LO+ 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 B15 060921 6-29 RF2638 Application Schematic 836MHz VCC 10 nF 12 nH IF1 nF IF+ 1 nF 3 1 nF LO 22 pF 4 5 22 pF 6 2 7 10 nF 1 8 VCC RF OUT 2 pF Application Schematic 1880MHz VCC 10 nF 1 nF IF1 nF IF+ 1 nF 3 5 pF LO 4 5 5 pF 6 2 7 10 nF 1 8 VCC 2.7 nH RF OUT 1.5 pF 6-30 Rev B15 060921 RF2638 Application Schematic Dual-Band Output (836MHz/1880MHz) VC C 10 nF 100 nH 6.8 nH 1 nF IF1 nF IF+ 1 nF 3 5 pF LO 4 5 CELL OUT 6 2 7 10 nF 18 nH 1 8 VCC 0.5 pF PCS OUT 4 pF 5.6 nH 5 pF Application Schematic W-CDMA (1950MHz) VCC 10 nF 4.7 nH 9 pF 1 nF IF1 nF IF+ 1 nF 3 5 pF LO 4 5 5 pF 6 2 7 10 nF 1 8 VCC W-CDMA OUT Rev B15 060921 6-31 RF2638 Evaluation Board Schematic - PCS/Cellular RF=1880MHz, IF=130MHz (Download Bill of Materials from www.rfmd.com.) C7 10 nF VCC 50 strip C5 68 pF L1 270 nH L2 * T1 1 2 3 50 strip C2 1 nF C3 * C4* 5 pF 22 pF C6* 1.5 pF 2 pF 4 8 7 6 5 C4 * 2638400- J2 IF IN 50 strip C6 * J3 RF OUT VCC C1 10 nF P1 P1-1 1 2 3 CON3 VCC GND NC J1 LO IN L2* C3* PCS** 2.7 nH 5 pF Cellular 12 nH 22 pF **Board as provided. Note: Board losses: 0.1 dB, Transformer losses: 1 dB Evaluation Board Schematic - Dual Output Cellular Out=836MHz, PCS Out=1880MHz, IF=130MHz Bias Choke Only; Not part of matching network VCC P1 1 T1 T4-1 C5 100 pF L1* TBD C10* TBD C9* TBD P1-2 2 3 CON3 NC VCC GND C8 4 pF L4 18 nH L5 5.6 nH Dual Band, Split Outputs matching network: Diplexed match at US cellular and PCS transmit bands. C7 10 nF L2 100 nH C6 0.5 pF L3 6.8 nH 50 strip J3 PCS OUT J2 IF IN 50 strip 1 2 3 8 7 6 5 50 strip J4 CELL OUT VCC J1 LO IN 50 strip C2 1 nF C3 5 pF 4 C1 10 nF C4 5 pF Note: Board losses: 0.1 dB, Transformer loss: 1 dB 2638401, Rev 1 6-32 Rev B15 060921 RF2638 Evaluation Board Schematic - W-CDMA RF=1950MHz, IF=380MHz P1 1 P1-2 380 MHz Matching Network T1 T4-1 J2 IF IN 50 strip C5 15 pF 2 3 CON3 L2 4.7 nH 1 2 3 50 strip C2 1 nF C3 5 pF 4 8 7 6 5 C4 5 pF 2638402, Rev - NC VCC GND Output Matching RF = 1950 MHz C7 10 nF VCC C6 9 pF L3 0 50 strip J3 W-CDMA OUT VCC C1 10 nF J1 LO IN Note: Board losses: 0.1 dB, Transformer loss: 1.62 dB Rev B15 060921 6-33 RF2638 Evaluation Board Layout PCS/Cellular Board Size 2.0" x 2.0" Board Thickness 0.031", Board Material FR-4 6-34 Rev B15 060921 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.) Rev B15 060921 6-35 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.) 6-36 Rev B15 060921 |
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