3.6V 0.5W RF Power Amplifier IC for DECT

Transcription

1 3.6V.W RF Power Amplifier IC for DECT MA2AF Applications DECT PCS Personal Wireless Telephony (PWT) Cordless PBX Radio/Wireless Local Loop (RLL/WLL) Features Single Positive Supply 4% Power Added Efficiency % Duty Cycle.2: Input VSWR in both On and Off states 8 to MHz Operation 6 Pin TSSOP Plastic Package Accommodates Battery Charging Conditions up to. Volts Self-Aligned MSAG -Lite MESFET Process V DD N/C RF IN/V GG V DD2 RF OUT/V DD3 4% PAE % Duty Cycle V GG2 V GG3 ELECTRICAL CHARACTERISTICS V DD= 3.6 V, P IN= -2 dbm, T A=2 C, Output externally matched to Ω Characteristic Symbol Min Typ Max Unit Frequency Range ƒ 88 9 MHz Output Power, f = 9 MHz dbm Power Gain G P 29.3 db Gain Slope, f=9 to 88 MHz.8.2 db/mh z Power Added Efficiency, f = 9 MHz 49 4 % Drain Current I DD 27 ma Harmonics 2ƒ o 3ƒ o dbc dbc Input VSWR (V DD =. V).2: 2.: ().2: 2.: Off Isolation (V DD= V) 4 db Thermal Resistance (Junction of 3 rd stage FET to solder point of pin 3) R TH J-S C/W Load Mismatch (V DD =. V, VSWR = 8:, ) No Degradation in Power Output Stability (, V DD = -. V, T S= -4 to +8 C, Load VSWR = :) All non-harmonically related outputs more than 6 db below desired signal ❶ North America: Tel. (8) , Fax (8) ❶ Europe: Tel. +44 (344) 869 9, Fax +44 (344) 998 E

2 3.6V.W RF Power Amplifier IC for DECT MA2AF MAXIMUM RATINGS (T A = 2 C unless otherwise noted) Rating Symbol Value Unit DC Supply Voltage (Pins, 2, 6) V DD. Vdc RF Input Power P IN 3 mw Junction Temperature T J C Storage Temperature Range T STG -4 to + C APP LICATION INFORMATION +V DD 6 T4 C C2 N/C 2 C4 3 4 L3 RF IN T T T RF OUT C3 R L 6 7 C C6 T3 8 9 L2 Figure. Evaluation Board Schematic List of components: C = pf DLI multilayer ceramic chip capacitor (CAHKTXL) C2 = pf DLI multilayer ceramic chip capacitor (CAHRBTXL) C3 =.7 pf DLI multilayer ceramic chip capacitor (CAHR7BTXL) C4 = pf DLI multilayer ceramic chip capacitor (CAHRBTXL) C = 2.2 pf DLI multilayer ceramic chip capacitor (CAH2R2BTXL) C6 = pf DLI multilayer ceramic chip capacitor (CAHKTXL) (DC blocking capacitor) L = 2.7 nh Toko chip inductor (TKS2362CTND) L2 = 3.3 nh Toko chip inductor (TKS2363CTND) L3 = 27 nh Coilcraft chip inductor (8CS.27XMBB) R = Ω chip resistor T =.9" of Ω==grounded coplanar waveguide (6 mil GETEK board) T2 =.2" of Ω==grounded coplanar waveguide (6 mil GETEK board) T3 =.39" of 7 Ω==grounded coplanar waveguide (6 mil GETEK board) T4 =." of 7 Ω==grounded coplanar waveguide (6 mil GETEK board) T =.4" of Ω==grounded coplanar waveguide (6 mil GETEK board) Component layout and printed circuit board drawing for RF IC evaluation board are shown in Figure 9. ❶ North America: Tel. (8) , Fax (8) ❶ Europe: Tel. +44 (344) 869 9, Fax +44 (344) 998 E

3 3.6V.W RF Power Amplifier IC for DECT MA2AF TYPICAL CHARACTERISTICS POUT (dbm) and, PAE (%) ƒ = 9 MHz P IN, Input Power (dbm) I DD Drain Current, IDD (Amps) Pout (dbm) and, PAE (%) Frequency (MHz) VSWR 4: 3: 2: : Input VSWR Figure 2. Output power, drain current and efficiency vs. input power Figure 3. Output power, efficiency and input VSWR vs. frequency POUT (dbm) and, PAE (%) ƒ = 9 MHz I DD Vdd (volts) Figure 4. Output power, drain current and efficiency vs. supply voltage Drain Current, IDD (Amps) POUT, Output Power (dbm) ƒο 2ƒο 3ƒο 4ƒο ƒο Frequency Figure. Harmonics ƒ = 9 MHz ❶ North America: Tel. (8) , Fax (8) ❶ Europe: Tel. +44 (344) 869 9, Fax +44 (344) 998 E

4 3.6V.W RF Power Amplifier IC for DECT MA2AF Pout (dbm) Frequency (MHz) , PAE (%) Pout, -4 C Pout, 2 C Pout, 8 C PAE, -4 C PAE, 2 C PAE, 8 C Figure 6. Output power and efficiency vs. frequency for different ambient temperatures MHz 89 MHz.6 - j9.2ω MHz 89 MHz 26. +j43.8ω MHz 8 MHz Figure 7. Input match impedance (as seen from the end of pin without IC on board) Figure 8. Output match impedance (as seen from the end of pin 2 without IC on board) ❶ North America: Tel. (8) , Fax (8) ❶ Europe: Tel. +44 (344) 869 9, Fax +44 (344) 998 E

5 3.6V.W RF Power Amplifier IC for DECT MA2AF MECHANICAL DATA Ω lead transition Figure 9. Component layout and printed circuit drawing for evaluation board (units in inches) ❶ North America: Tel. (8) , Fax (8) ❶ Europe: Tel. +44 (344) 869 9, Fax +44 (344) 998 E