TQ1422 (Advanced data sheet) GSM850/900 and DCS1800/PCS1900 Tx – Bandpass Filter Package Outline: Features: • Low insertion loss • High suppression of 2nd,3rd , 4th harmonics • High selectivity • Balanced to single-ended operation • GSM Input: 310 Ohm balanced PCN/PCS Input: 80 Ohm balanced • 50 Ω single-ended output impedances. • Integrated DC-biasing to input • MLP 10L 3x3 package (3x3mm²) Dimensions in mm Application: TX H2,H3,H4-Bandpass Filter / Balun for GSM850/900 and DCS/PCS systems Description: TQ1422 is a quadband capable TX bandpass filter for GSM850/E-GSM/DCS1800/PCS1900 applications. The integrated passive filter provides an optimum interface between the TQM7M4011/4012/4014 Power Amplifier Modules and direct conversion transceiver with balanced outputs. TQ1422 replaces up to 17 surface-mount components [including 2 Baluns and/or SAW filter] typically required on the phone board to provide similar functionality. High value inductors to supply open collector modulators are integrated. Copyright © 2004 TriQuint Semiconductor Inc., All rights reserved (Rev 1.17 2004-08-06) All specifications subject to change without notice 1 Absolute Maximum Ratings: Parameter Min Maximum input power Maximum bias current GSM Maximum bias current PCN/PCS Max Unit 25 dBm 50mA(Rmax=2Ohm) mA 50mA(Rmax=1.5Ohm) mA Operation temperate range -40 +85 °C Storage temperature range -60 +150 °C Schematic: Copyright © 2004 TriQuint Semiconductor Inc., All rights reserved (Rev 1.17 2004-08-06) All specifications subject to change without notice 2 Electrical Specifications Low Band GSM850 / E-GSM (T= 25°C) Passband Parameter Min. Passband Typ. Max. 824-915 Insertion attenuation 1.90 Insertion attenuation T= 85°C Ripple in Passband 0.075 [any 40MHz] Unit MHz 2.1 dB 2.25 dB 0.20 dB Differential input conductance 1 / 310 S Differential input susceptance -0.85 pF 50 Ω Amplitude balance 0.15 dB Phase balance 180 deg Inband VSWR Input 1.2 1.4 Inband VSWR Output 1.6 1.8 Single ended output impedance Stoppband Parameter (ZDIFF=310Ω Ω||-0.85pF;ZCOMMON=50Ω Ω;ZOUTPUT=50Ω Ω) Attenuation Differential Mode Min. Typ. Dc ... 300 MHz 5 10 dB 1648 ... 1668 MHz 10 15 dB 1760 ... 1850 MHz 17 22 dB 2472 ... 2547 MHz [ 3x850 ] 40 45 dB 2640 ... 2775 MHz [ 3x900 ] 40 45 dB 3296 ... 3770 MHz [ 4xfc ] 30 35 dB 2775 ... 8000 MHz 20 25 dB Min. Typ. 100 ... 1400 MHz 30 35 dB 1648 ... 1668 MHz 30 35 dB 1760 ... 1850 MHz 30 35 dB 2472 ... 2547 MHz [ 3x850 ] 30 35 dB 2640 ... 2775 MHz [ 3x900 ] 25 30 dB 3296 ... 3770 MHz [ 4xfc ] 17 22 dB 2775 ... 5000 MHz 17 22 dB 5000 ... 8000 MHz 5 10 dB Attenuation Common Mode Max. Max. Unit Unit Copyright © 2004 TriQuint Semiconductor Inc., All rights reserved (Rev 1.17 2004-08-06) All specifications subject to change without notice 3 Electrical Specifications High Band DCS1800 / PCS1900 (T= 25°C) Passband Parameter Min. Passband Typ. Max. 1710-1910 Insertion attenuation 2.6 Insertion attenuation T= 85°C Ripple in Passband 0.25 [any 80MHz] Unit MHz 3.1 dB 3.3 dB 0.35 dB Differential input conductance 1 / 80 S Differential input susceptance -0.8 pF Single ended output impedance 50 Ω Amplitude balance 0.8 dB Phase balance 175 deg Inband VSWR Input 1.2 1.4 Inband VSWR Output 1.4 1.6 Stoppband Parameter (ZDIFF=80Ω Ω||-0.80pF;ZCOMMON=50Ω Ω;ZOUTPUT=50Ω Ω) Attenuation Differential Mode Min. Typ. Dc ... 600 MHz 5 7 dB 3420 ... 5130 MHz 20 25 dB 5130 ... 5730 MHz [ 3xfc ] 33 40 dB 5730 ... 10000 MHz 25 32 dB Min. Typ. 100 ... 1710 MHz 8 13 dB 1710 ... 1910 MHz 15 20 dB 1910 ... 3420 MHz 25 30 dB 3420 ... 3820 MHz [ 2xfc ] 28 33 dB 3820 ... 6840 MHz 28 33 dB 6840 ... 7640 MHz [ 4xfc ] 18 25 dB 7640 ... 10000 MHz 5 10 dB Attenuation Common Mode Max. Max. Unit Unit Copyright © 2004 TriQuint Semiconductor Inc., All rights reserved (Rev 1.17 2004-08-06) All specifications subject to change without notice 4 Pin Out: Pin # Description Function 1 DCS_IN1 2 DCS_IN2 3 VCC1 4 GSM_IN1 5 GSM_IN2 6 GSM_OUT GSM single ended output, 50Ohm 7 GND GSM isolated GND *)2 8 VCC2 Input bias voltage *)1 9 GND DCS isolated GND *)2 10 DCS_OUT DCS single ended output, 50Ohm Heat sink Common GND DCS balanced input , 80Ohm || -0.8pF @ 1810MHz Input bias voltage *)1 GSM balanced input, 310Ohm || -0.85pF @ 875MHz (11) 1 *) Either VCC1 or VCC2 needs to be connected. VCC1 and VCC2 are alternate inputs short-circuited on TQ1422. *)2 Isolated GND pins must not be connected to the heat sink directly. Use (separated) vias to connect to the PCB RF ground plane as close as possible ! Copyright © 2004 TriQuint Semiconductor Inc., All rights reserved (Rev 1.17 2004-08-06) All specifications subject to change without notice 5 Typical Performance • GSM 850 / E-GSM: Common Mode: Transmission S21 [dB] 0 -10 -10 -20 -20 db(S(2,1)) db(S(2,1)) Differential Mode: Transmission S21 [dB] 0 -30 -30 -40 -40 -50 -50 -60 -60 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 freq, GHz • 4 5 6 7 8 9 10 freq, GHz DCS1800 / PCS1900: Common Mode: Transmission S21 [dB] 0 -10 -10 -20 -20 db(S(2,1)) db(S(2,1)) Differential Mode: Transmission S21 [dB] 0 -30 -30 -40 -40 -50 -50 -60 -60 0 1 2 3 4 5 6 7 freq, GHz 8 9 10 0 1 2 3 4 5 6 8 9 10 freq, GHz Copyright © 2004 TriQuint Semiconductor Inc., All rights reserved (Rev 1.17 2004-08-06) All specifications subject to change without notice 7 6