RF2466 6 3V CDMA/FM MIXER Typical Applications • CDMA/FM Cellular Systems • General Purpose Downconverter • Supports Dual-Mode AMPS/CDMA • Commercial and Consumer Systems • Supports Dual-Mode TACS/CDMA • Portable Battery-Powered Equipment Product Description 2 0.45 0.28 3.75 0.75 0.50 3.75 + 1 1.60 4.00 6 12° 1.50 SQ INDEX AREA 3 3.20 0.75 0.65 MIXERS The RF2466 is a receiver dual downconverter designed for the receive section of dual-mode CDMA/FM cellular applications. It is designed to downconvert RF signals while providing 14dB gain in CDMA mode and 7dB gain in FM mode. Also, it features IF output selection and power down mode. Noise Figure, IP3, and other specs are designed to be compatible with the IS-95 Interim Standard for CDMA cellular communications. The IC is manufactured on an advanced Silicon Bipolar process. 1 0.80 TYP 4.00 1.00 0.90 0.05 0.00 NOTES: 1 Shaded Pin is Lead 1. 2 Dimensions in mm. Dimension applies to plated terminal and is measured between 0.10 mm and 0.25 mm from terminal tip. The terminal #1 identifier and terminal numbering convention 3 shall conform to JESD 95-1 SPP-012. Details of terminal #1 identifier are optional, but must be located within the zone indicated. The identifier may be either a mold or marked feature. 4 5 Optimum Technology Matching® Applied ü Si BJT GaAs HBT GaAs MESFET Si Bi-CMOS SiGe HBT Si CMOS Pins 1 and 9 are fused. Package Warpage: 0.05 max. Package Style: LCC, 16-Pin, 4x4 Features GND CDMA- CDMA+ GND FM+ • Dual Mode CDMA/AMPS 1 16 15 14 13 IF SELECT 2 12 FM- • Dual Mode JCDMA/TACS • Digitally Selectable IF Outputs • 500MHz to 1100MHz Operation • Power Down Mode 5 6 7 8 9 BYPASS GND 10 GND MIXER IN LO+ 4 GND 11 VCC LO- PD 3 Functional Block Diagram Rev A7 010717 Ordering Information RF2466 RF2466 PCBA 3V CDMA/FM Mixer 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 6-7 RF2466 Absolute Maximum Ratings Parameter Supply Voltage Operating Ambient Temperature Storage Temperature Parameter Rating Unit -0.5 to +5 -40 to +85 -40 to +150 VDC °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, RF=881MHz, LO=966MHz @ 0dBm, IF1= CDMA, IF2=FM Overall RF Frequency Range LO Frequency Range IF Frequency Range Conversion Gain 6 12.5 5 Noise Figure MIXERS Input VSWR Input IP3 Condition +3 +3 Input P1dB MIX IN to IF1, IF2 Rejection IF1, IF2 Output Freq. Range Output Impedance 200 to 1000 500 to 1100 0.1 to 250 14 7 9 10.5 <1.5:1 <2:1 +7 +7 -7 -4 35 70 to 100 >1 870 MHz MHz MHz dB dB dB dB dBm dBm dBm dBm dB MHz kΩ Ω IF1, 1kΩ balanced load. IF2, 870Ω load. IF1 single sideband. IF2 single sideband IF1 with external matching IF2 with external matching IF1 IF2 IF1 IF2 With external IF interface network IF1, balanced, open collector IF2, single ended, with external inductor. LO Input LO Input Range LO IN to RF Input Rejection LO IN to IF1, IF2 Rejection LO Input VSWR -10 -3 20 15 <2:1 2.5 0 3.0 16 12 4.0 21 16 5 dBm dB dB IF1 with external matching network IF2 with external matching network Power Supply Voltage Current Consumption 6-8 2.7 V mA mA µA IF1 selected IF2 selected ENABLE=0 Rev A7 010717 RF2466 Function GND 2 IF SELECT 3 PD Description Ground connection. For best performance, keep traces physically short and connect immediately to ground plane. Control line for IF out select. A logic “low” enables the FM output. A logic “high” enables the CDMA output. The threshold voltage is 1.6V, and the pin draws less than 50µA when selected. PD LO IN+ LO+ Mixer LO balanced input pin. For single-ended input operation, this pin is used as an input and pin 5 is bypassed to ground. 5 6 LOGND Same as pin 4 except complementary input. 7 MIXER IN BYPASS 9 10 11 GND GND VCC 50 kΩ C1 Power down pin. A logic “low” (<1.6V) turns the part off. A logic “high” (>1.6V) turns the part on. In addition, pin 2 (IF SELECT) should also be taken low during power down. 4 8 Interface Schematic Ground connection for the mixer. For best performance, keep traces physically short and connect immediately to ground plane. Mixer RF input pin. This pin is internally DC-biased and should be DC blocked if connected to a device with DC present. External matching network sets RF and IF impedance for optimum performance. 50 kΩ LO IN- See pin 4. 6 MIX IN MIXERS Pin 1 Internal voltage reference. External RF 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. Same as pin 1. Same as pin 1. Supply voltage for the mixers, bias circuits, and control logic. External RF 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. VCC2 BIAS LO OUT 12 FM- Same as pin 13, except complimentary output. For typical single ended operation, this pin is connected directly to VCC. 13 FM+ FM IF output pin. This is a balanced output, but is typically used as a single-ended output. The internal circuitry, in conjunction with an external matching/bias inductor to VCC, sets the operating impedance. This inductor is typically incorporated in the matching network between the output and IF filter. The net output impedance, including the external inductor, is about 870Ω at 85MHz. Because this pin is biased to VCC, a DC blocking capacitor must be used if the IF filter input has a DC path to ground. See Application Schematic. Same as pin 1. 14 15 16 GND CDMA+ CDMA- Rev A7 010717 CDMA IF output pin. This is a balanced output. The internal circuitry, in conjunction with an external matching/bias inductor to VCC, sets the operating impedance. This inductor is typically incorporated in the matching network between the output and IF filter. The net output impedance, including the external inductor, at 85MHz is higher than 1kΩ, even though the part is designed to drive a 1kΩ load. Because this pin is biased to VCC, a DC blocking capacitor must be used if the IF filter input has a DC path to ground. See Application Schematic. Same as pin 15, except complementary output. See pin 13. IF2+ IF2- 8.5 pF 2.1 kΩ IF1+ GND2 IF1- 1.2 pF 1.2 pF See pin 15. 6-9 RF2466 Pin Pkg Base Function GND Description Interface Schematic Ground connection. The backside of the package should be soldered to a top side ground pad which is connected to the ground plane with multiple vias. MIXERS 6 6-10 Rev A7 010717 RF2466 Application Schematic CDMA Saw Filter L L L FM Saw Filter 1 IF SELECT PD 16 14 15 8.2 nH 200 Ω 2 12 3 11 4 10 5 6 7 8 FM IF OUT 13 10 pF LO IN CDMA IF OUT L VCC 33 nF 1 µF 9 6 3.3 pF 33 nF MIXERS 33 nF 15 nH 15 nH MIX IN Rev A7 010717 6-11 RF2466 Evaluation Board Schematic (Download Bill of Materials from www.rfmd.com.) P2 P1 P1-1 + C10 1 uF C5 33 nF VCC J3 CDMA IF1 P1-3 50 Ω µstrip R1 33 Ω L3 3.3 uH 1 VCC 2 GND 3 NC P2-1 P2-3 1 IF SEL 2 GND 3 ENABLE C3 9 pF R2 68 Ω L2 390 nH T1 **XFMER C2 10 pF 50 Ω µstrip C4 9 pF J4 FM IF2 VCC L4 3.3 uH 1 16 15 14 R3 10 Ω 13 VCC 2 12 ENABLE 3 11 L1 150 nH C1 33 nF 50 Ω µstrip J3 2 6 IF SEL J1 LO IN C7 3.0 pF 5 L5 8.2 nH 6 7 8 9 17 C9 33 nF L7 15 nH 6-12 L8* TBD R4 200 Ω IN 3 4 GND GND GND GND 6 50 Ω µstrip C8 33 nF **Core: Fair-Rite Balun #2865002402 L12: 3 turns #30 AWG (Green) L34: 12 turns #32 AWG (Red) One turn = one pass through BOTH holes. Winding starts and finishes on same end of core. L12 and L34 exit opposite ends of core. F1: filter 1 OUT 50 Ω µstrip 10 5 MIXERS 4 C6 10 pF F1 L6 15 nH J2 MIXER IN 2466400 Rev A Enable IF Select Stage 0 0 Off 0 1 1 0 Off FM 1 1 CDMA Rev A7 010717 RF2466 Evaluation Board Layout Board Size 3.070” x 2.928” Board Thickness 0.056”, Board Material FR-4, Multi-Layer MIXERS 6 Rev A7 010717 6-13 RF2466 CDMA Gain and Noise Figure versus LO Drive CDMA IIP3 and Noise Figure versus LO Drive 14.0 13.0 12.5 CDMA Gain (dB) 12.0 CDMA NF (dB) 11.0 14.0 12.0 13.0 11.0 12.0 12.0 10.0 11.0 8.0 7.0 10.5 6.0 10.0 5.0 CDMA IIP3 (dBm) 9.0 CDMA IIP3 (dBm) 9.0 CDMA NF (dB) 8.0 8.0 6.0 7.0 9.5 4.0 CDMA NF (dB) 10.0 11.5 CDMA NF (dB) CDMA Gain (dB) 10.0 4.0 6.0 3.0 9.0 2.0 8.0 -9.0 -8.0 6 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 14.0 -4.0 -3.0 12.0 4.0 10.0 3.0 2.0 8.0 1.0 6.0 -6.0 -5.0 -4.0 LO Drive (dBm) -3.0 -2.0 -1.0 0.0 FM IIP3 (dBm) 5.0 -7.0 -2.0 -1.0 0.0 9.0 15.0 8.0 14.0 FM IIP3 (dBm) 13.0 FM NF (dB) FM NF (dB) FM Gain (dB) -5.0 7.0 FM Gain (dB) FM NF (dB) 6-14 -6.0 FM IIP3 and Noise Figure versus LO Drive 6.0 -8.0 -7.0 FM Gain and Noise Figure versus LO Drive 16.0 -9.0 -8.0 LO Drive (dBm) 7.0 0.0 -10.0 0.0 -9.0 LO Drive (dBm) 8.0 MIXERS 4.0 -10.0 0.0 6.0 12.0 5.0 11.0 4.0 10.0 3.0 9.0 2.0 8.0 1.0 7.0 0.0 -10.0 FM NF (dB) 0.0 -10.0 2.0 5.0 8.5 1.0 6.0 -9.0 -8.0 -7.0 -6.0 -5.0 -4.0 -3.0 -2.0 -1.0 0.0 LO Drive (dBm) Rev A7 010717