STB7003 TRI-BAND GSM/DCS/PCS LNA • SUPPLY VOLTAGE 2.8V • LOW CURRENT CONSUMPTION • VERY LOW NOISE FIGURE: NF=1.5dB @ 950MHz NF=1.9dB @ 1850MHz NF=2dB @ 1950MHz • DIGITAL GAIN CONTROL MSOP10-EP (exposed pad) ORDER CODE STB7003 BRANDING 7003 APPLICATIONS TRI-BAND GSM/DCS/PCS FRONT-ENDS FUNCTIONAL BLOCK DIAGRAM PD GC LNA1 AI1 AO1 BIAS DESCRIPTION The STB7003 is a tri-band LNA designed for GSM/DCS/ PCS applications. The GC pin sets the LNA gain levels. The innovative architecture implemented allows to reach very low current consumption. LNA1 works at 0.9-1.0 GHz and LNA2 over the 1.8-2GHz frequency range. GND VccGSM LNA2 AI2 AO2 VccDCS BSW ABSOLUTE MAXIMUM RATING Symbol Vcc Parameter Supply voltage Value Unit 4.5 Tj Junction temperature 150 Tstg Storage temperature -40 to +85 V o C °C THERMAL DATA Symbol Rth(j-a) Parameter Thermal resistance junction-ambient January, 22 2002 Value TBD Unit o C/W 1/9 STB7003 ELECTRICAL CHARACTERISTICS (Vcc = 2.8V, Tamb= 25 oC) Symbol Parameter Vcc Supply voltage IPD Sleep supply current Test conditions Min. Typ. 2.7 Max. Unit 3.3 V 5 uA LNA1 @ 950MHz Icc Supply current 4.5 mA -1 16 dB G Power gain Gp1(1) Gp2(1) NF Noise figure Gp1 Gp2 5.5 1.5 dB P1dB Input 1 dB compr. power Gp1 Gp2 -19 -21 dBm IIP3 Input third order intercept -10.8 -12.6 dBm Gp1(2) Gp2(2) VSWRi Input VSWR 2:1 VSWRo Output VSWR 2:1 LNA2 @ 1850MHz Icc Supply current 7.3 mA -4 14.7 dB G Power gain Gp1(1) Gp2(1) NF Noise figure Gp1 Gp2 9.6 1.9 dB P1dB Input 1 dB compr. power Gp1 Gp2 -11.5 -13.1 dBm IIP3 Input third order intercept -1.4 -3.5 dBm VSWRi Input VSWR 2:1 VSWRo Output VSWR 2:1 Gp1(3) Gp2(3) LNA2 @ 1950MHz Icc Supply current 7.3 mA -4.5 14.7 dB G Power gain Gp1(1) Gp2(1) NF Noise figure Gp1 Gp2 9.8 2 dB P1dB Input 1 dB compr. power Gp1 Gp2 -10.8 -12.6 dBm IIP3 Input third order intercept -1.5 -3.7 dBm Gp1(4) Gp2(4) VSWRi Input VSWR 2:1 VSWRo Output VSWR 2:1 Note(1) : Note(2) : Note(3) : Note(4) : 2/9 Gp1 min gain, Gp2 max gain. Measured data with two tones f IN1 = 945 MHz, fIN2 = 945.8 MHz, PIN = - 33 dBm for each tone Measured data with two tones f IN1 = 1850 MHz, fIN2 = 1850.8 MHz, P IN = - 33 dBm for each tone Measured data with two tones f IN1 = 1960 MHz, fIN2 = 1960.8 MHz, P IN = - 33 dBm for each tone STB7003 GAIN SELECTION BSW GC GSM LNA1 DCS/PCS LNA2 0 0 High gain Off 0 1 Low gain Off 1 0 Off High gain 1 1 Off Low gain PINOUT Pin Number Symbol Description 1 PD Power down 2 AI1 GSM LNA1 input 3 GND Ground 4 AI2 DCS/PCSl LNA2 input 5 BSW Band switch between GSM and DCS/PCS RF output 6 VccDCS DCS Supply voltage 7 AO2 DCS/PCS LNA2 output 8 VccGSM GSM/BiAS Supply voltage 9 AO1 GSM LNA1 output 10 GC LNA1/2 gain control 3/9 STB7003 TYPICAL PERFORMANCE (GSM BAND) Power Gain vs. Frequency 7 High Gain Low Gain 6 15 5 10 NF (dB) S21(Log Mag) (dB) 20 Noise Figure vs. Frequency 5 4 3 Low Gain 0 2 -5 800 820 840 860 880 900 920 940 960 High Gain 1 920 980 1000 930 940 950 960 970 Frequency (MHz) FREQUENCY (MHz) Output Return Loss vs. Frequency Input Return Loss vs. Frequency 0 0 -4 RETURN LOSS RETURN LOSS (dB) -2 HIgh Gain -6 -8 -10 Low Gain -14 820 840 860 880 900 920 FREQUENCY (MHz) 940 960 980 1000 0 -40 S21(Log Mag) (dB) -41 HIgh Gain -43 -44 Low Gain -45 -46 -47 -48 800 4/9 820 840 High Gain -15 860 880 900 920 940 FREQUENCY (MHz) -25 800 Low Gain 820 840 860 880 900 920 FREQUENCY (MHz) Reverse Isolation vs. Frequency -42 -10 -20 -12 800 -5 960 980 1000 940 960 980 1000 STB7003 TYPICAL PERFORMANCE (DCS / PCS BAND) Power Gain vs. Frequency Noise Figure vs. Frequency 20 High Gain 10 NF (dB) S21(Log Mag) (dB) 15 5 0 Low Gain -5 -10 1800 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000 FREQUENCY (MHz) High Gain 1850 1900 1950 2000 FREQUENCY (MHz) 0 0 -4 -6 High Gain -10 -12 -14 Low Gain -16 RETURN LOSS (dB) -2 RETURN LOSS Low Gain Output Return Loss vs. Frequency Input Return Loss vs. Frequency -8 11 10 9 8 7 6 5 4 3 2 1 1800 -2 -4 -6 -8 -10 -18 -20 1800 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000 FREQUENCY (MHz) High Gain Low Gain -12 1800 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000 FREQUENCY (MHz) Reverse Isolation vs. Frequency -35 S12 (Log Mag) (dB) -36 -37 -38 -39 High Gain -40 -41 -42 Low Gain -43 -44 1800 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000 FREQUENCY (MHz) 5/9 STB7003 TEST CIRCUIT SCHEMATIC JP1 VCC S3 VCC C14 10n 1 2 C1 4u7 2 HEADER SW SPDT C6 10n S1 VCC SW SPDT R1 C2 10n 510 L3 U1 J1 SMA_in900 PD GC L1 C3 12n 2p2 J2 L2 AI1 AO1 GND VCC AI2 AO2 10n L4 VCC 110n C7 C17 STB7003 n/c C12 n/c J3 2p 4p C11 BSW VCClna 2n7 C9 100p 5n1 R2 C4 0.5p C8 SMA L6 VCC 0 1n J4 SMA in1800 VCC S2 SW SPDT C10 470p C5 10n R3 L5 130 4n3 L7 VCC C13 33p 1 110n 2 L8 VCC C15 12p 68n BILL OF MATERIAL Used Part Type Designator Footprint Description 1 12n L1 0603 COILCRAFT KIT C124-2 1 2n7 L2 0603 COILCRAFT KIT C124-2 1 5n1 L3 0603 COILCRAFT KIT C124-2 2 110n L4, L7 0603 COILCRAFT KIT C124-2 1 4n3 L5 0603 COILCRAFT KIT C124-2 1 1n L6 0402 COILCRAFT KIT C128 1 68n L8 0603 COILCRAFT KIT C124-2 1 1u C1 TAG A 6 10n C2, C5, C6 0603 MURATA 0603 KIT C9, C14 6/9 1 2p2 C3 0603 MURATA 0603 KIT 1 0.5p C4 0603 MURATA 0603 KIT 1 4p C7 0603 MURATA 0603 KIT 1 100p C8 0603 MURATA 0603 KIT 1 470p C10 0603 MURATA 0603 KIT 2 n/c C11, C12 0603 1 33p C13 0603 MURATA 0603 KIT 1 12p C15 0603 MURATA 0603 KIT 1 2p C17 0603 MURATA 0603 KIT 1 510 R1 0603 1 0 R2 0603 1 130 R3 0603 SMA STB7003 EVALUATION BOARD COMPONENTS PLACEMENT TOP LAYER 37mm 27mm PCB CROSS SECTION Top Layer 0.01 inch/0.25mm Internal Layer (Ground Layer) 0.02 inch/0.5mm Layer for mechanical rigidity of PCB Bottom Layer 7/9 STB7003 MECHNANICAL DATA 8/9 STB7003 Information furnished is believed to be accurate and reliable. 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