PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary Applications Product Description A monolithic, high-efficiency, silicon-germanium power amplifier IC, the PA2423U is designed for 2.4 GHz wireless applications, including BluetoothTM Class1 and 2.4 GHz cordless telephone applications. It delivers +22.5 dBm output power making it capable of overcoming insertion losses of up to 2.5 dB between amplifier output and antenna input. Bluetoothtm wireless technology (Class 1) USB dongles PCMCIA, flash cards Access points 2.4 GHz cordless telephone Features The PA2423U provides a digital control input for controlling power up and power down modes of operation. +22.5 dBm Output Power Low current 108 mA typical @ POUT = +20 dBm CMOS Enable Interface Power-control and power-down modes 3.3 V single supply operation Thin, lead-free 6 pin QFN package The PA2423U operates at 3.3 V DC. At typical output power level (+22.5 dBm), the current consumption is 135 mA. The silicon/silicon-germanium structure of the PA2423U, and its exposed die-pad package, soldered to the system PCB, provide high thermal conductivity and a subsequently low junction temperature. This device is capable of operating at a duty cycle of 100 percent. The device is pin for pin compatible to the PA2423L. Ordering Information Part Number Package Remark PA2423U 6 pin QFN (0.5 mm height) 6 pin QFN (0.5 mm height) Evaluation Kit Samples PA2423U-R PA2423U-EV1 Tape & Reel Functional Block Diagram V CT L Bias Generator IN Stage 1 GND V R A MP Control Circuitry Interstage Match V V CC0 CC1 Stage 2 OUT/V C C 2 GND Figure 1: PA2423U Block Diagram 131-DST-01 Rev 1.1 Apr-18-2006 Confidential QA041806 1 of 10 PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary Pin-Out Diagram PA2423U TopView V CC1 5 4 V CC0 V CC0 4 V C TL 2 V R AMP Die Pad IN V CC1 IN 5 1 3 OUT/V C C 2 6 2 OUT/V C C 2 V R AMP 6 1 3 V C TL PA2423U Bottom View Figure 2: PA2423U Pin-Out Pin Out Description Pin No. Name Description 1 VCTL Controls the output level of the power amplifier. An analog control signal between 0 V and VCC varies the PA output power between minimum and maximum values 2 VRAMP Power Amplifier Enable pin. A digital control signal with logic high (power up) and logic low (power down) is used to turn the device on and off. 3 IN 4 VCC0 Bias supply voltage 5 VCC1 Stage 1 collector supply voltage, external inter-stage matching network is required 6 OUT/VCC2 Die Pad GND Power amplifier RF input, external input matching network with DC blocking is required PA Output and Stage2 collector supply voltage, external output matching network with DC blocking is required Heatslug Die Pad is ground 131-DST-01 Rev 1.1 Apr-18-2006 Confidential QA041806 2 of 10 PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary Absolute Maximum Ratings Operation in excess of any one of above Absolute Maximum Ratings may result in permanent damage. This device is ESD sensitive. Handling and assembly of this device should be at ESD protected workstations. Symbol Parameter Min. Max. Unit VCC Supply Voltage -0.3 +3.6 V VCTL Control Voltage -0.3 VCC V Ramping Voltage -0.3 VCC V - +8 dBm VRAMP IN RF Input Power TA Operating Temperature Range -40 +85 °C Storage Temperature Range -40 +150 °C - +150 °C TSTG Tj Maximum Junction Temperature DC Electrical Characteristics Conditions: VCC0 = VCC1 = VCC2 = VRAMP = VCTL = 3.3 V, PIN = 0 dBm, TA = 25 °C, f = 2.45 GHz, input and output externally matched to 50Ω unless otherwise noted. Symbol Parameter Min. Typ. Max. Unit 2.7 3.3 3.6 V VCC Supply Voltage ICC Supply Current (ICC = IVCC0 + IVCC1 + IVCC2), VCTL = 3.3 V, POUT_MAX ≤ 22.5 dBm - 135 160 mA ∆IccTEMP Supply Current variation over temperature from TA = 25 °C (-40 °C < TA < +85 °C) - 25 - % VCTL PA Output Power Control Voltage Range 0 - VCC V ICTL Current sunk by VCTL pin - 200 250 µA Logic High Voltage 2.0 - - V Logic Low Voltage - - 0.8 V Leakage Current when VRAMP = 0 V, No RF, VCTL = high - 0.5 10 µA VRAMP Istdby 131-DST-01 Rev 1.1 Apr-18-2006 Confidential QA041806 3 of 10 PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary AC Electrical Characteristics Conditions: VCC0 = VCC1 = VCC2 = VRAMP = VCTL = 3.3 V, PIN = 0 dBm TA = 25 °C, f = 2.45 GHz, input and output externally matched to 50Ω unless otherwise noted. Symbol Min. Typ. Frequency Range 2400 - 2500 MHz POUT_MAX Output Power @ VCTL = 3.3 V 20.0 22.5 - dBm POUT_MIN Output Power @ VCTL = 0.4 V - -20 0 dBm Output Power variation over temperature (-40 °C < TA <+85 °C) - 1 2 dB Control Voltage Sensitivity - - 120 dBm/V 25.5 28.5 - dB - 0.2 1.0 dB - -45 -30 - -40 -35 Isolation in “OFF” State, VRAMP = 0 V 15 36 - dB Reverse Isolation 32 42 - dB fL-U ∆Ptemp dPOUT /d VCTL Parameter GSS Gain @ PIN = -25 dBm GVAR Gain Variation over band (2400-2500 MHz) 2f 3f, IS21IOFF IS12I STAB Harmonics Unit dBc All non-harmonically related outputs less than -50 dBc Stability (PIN = 0 dBm, Load VSWR = 6:1) 131-DST-01 Rev 1.1 Apr-18-2006 Max. Confidential QA041806 4 of 10 PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary Typical Performance Characteristics Test Conditions: SiGe PA2423U-EV1: VCC0 = VCC1 = VCC2 = VRAMP = VCTL = 3.3 V, PIN = 0 dBm, TA = 25 °C, f = 2.45 GHz, input and output externally matched to 50Ω unless otherwise noted ICC vs. PIN over VCC (2.45 GHz) POUT vs. PIN over VCC (2.45 GHz) 2.7 V 3.6 V 3.3 V 30 0.17 25 0.15 20 0.13 ICC (A) POUT (dBm) 3.3 V 15 0.09 5 0.07 -22 -20 -18 -16 -14 -12 -10 -8 -6 -4 -2 0 0.05 -24 2 -22 -20 -18 -16 -14 PIN (dBm) 2.7V -8 -6 -4 -2 0 2 3.3 V 2.7 V 3.6 V 23.5 45 23 40 22.5 35 Gain (dB) Efficiency (%) -10 Gain vs Frequency over VCC (PIN = 0 dBm) 3.6V 50 30 25 20 15 22 21.5 21 10 20.5 5 0 -30 -25 -20 -15 -10 -5 0 5 20 10 2.4 2.41 2.42 2.43 P IN (dBm) 3.3 V 2.7 V 2.44 2.45 2.46 2.47 2.48 2.49 2.5 Frequency (GHz) POUT vs. VCTL over VCC (2.45 GHz) I CC vs. VCTL over VCC (2.45 GHz) 3.6 V 3.3 V 30 0.16 25 0.14 20 2.7 V 3.6 V 0.12 15 I CC (A) P OUT (dBm) -12 P IN (dBm) Efficiency vs PIN over VCC (2.45 GHz) 3.3V 3.6 V 0.11 10 0 -24 2.7 V 10 5 0 0.1 0.08 0.06 -5 0.04 -10 0.02 -15 -20 0 0 0.5 1 1.5 2 2.5 3 3.5 4 0.5 VCTL (V) 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 3.25 3.5 VCTL (V) Figure 3: PA2423U Typical Performance Characteristics 131-DST-01 Rev 1.1 Apr-18-2006 Confidential QA041806 5 of 10 PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary Typical Performance Characteristics (Continued) 2Fo Harmonic vs POUT over VCC (2.45 GHz) 3.3 V 2.7 V 3Fo Harmonic vs. POUT over VCC (2.45 GHz) 3.3 V 3.6 V -35 3Fo Harmonic (dBc) 2Fo Harmonic (dBc) 2.7 V 3.6 V -35 -30 -40 -45 -50 -55 -60 -40 -45 -50 -55 -60 -65 -70 -65 15 16 17 18 19 20 21 22 23 24 25 15 16 17 18 POUT (dBm) 19 20 21 22 23 24 25 POUT (dBm) Figure 4: PA2423U Typical Performance Characteristics (Continued) Application Circuit Figure 5 is a representation of the PA2423U application circuit. For a detailed schematic and layout, refer to SiGe’s PA2523U-EK1 Evaluation Kit Data Sheet (Document Number: 131-DST-02). To Antenna VCC (3.3V) FromBB/T ransceiverorT ietoVCC (3.3V) 6 OUT/ V CC2 Output Match 1 V C TL FromBB/T ransceiver 2423U LotCode 2 5 V CC 1 Interstage 4 3 V R AMP V CC (3.3V) IN V CC0 Input Match From T ransceiver Figure 5: PA2423U Application Circuit Branding Information Figure 6 shows the branding for the PA2423U, including the Pin 1 location relative to the branding. Part Number Pin 1 Lot Code 2423U Lot Code Figure 6: PA2423U Branding Information 131-DST-01 Rev 1.1 Apr-18-2006 Confidential QA041806 6 of 10 PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary Tape and Reel Information Table 1 and Figure 7 show the PA2423U tape and reel information. Parameter Reel Diameter Reel Width Units per Reel Value 7 inches 8 mm 3000 Table 1: PA2423U Tape and Reel Information Figure 7: PA2423U Tape and Reel Diagram Package Dimensions The PA2423U is packaged in a 1.6 mm x 3.0 mm 6 pin QFN package, with a height of 0.5 mm. The detailed package drawing is shown in Figure 8. The underside of the package is an exposed die-pad structure. This allows for direct soldering to the PCB for enhanced thermal conductivity. The package dimensions are shown in the drawing below. The PA2423U is lead free. Figure 8: PA2423U Package Drawing 131-DST-01 Rev 1.1 Apr-18-2006 Confidential QA041806 7 of 10 PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary Recommended Application PCB Footprint Layout Figure 9 shows SiGe’s recommended PA2423U Application PCB footprint. RECOMMENDED FOOTPRINT QFN 6-PIN I/O 3.0X1.6 mm 1.0 Figure 9: PA2423U Recommended Application PCB Footprint 131-DST-01 Rev 1.1 Apr-18-2006 Confidential QA041806 8 of 10 PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary Applications Information For test and design purposes, SiGe Semiconductor offers an evaluation board for the PA2423U. The order part number for the evaluation board is PA2423U-EV1. The evaluation board is intended to simplify the testing with respect to RF performance of this power amplifier. The application note, 131-DST-02 provides the supporting information for using the evaluation board. It contains information on the schematic, bill of materials and recommended layout for the power amplifier and the input and output matching networks. To assist in the design process, this layout is available, upon request, in gerber file format. Using VRAMP VRAMP is a digital pin used to power-up and power-down the PA2423U in time division duplex systems such as TM Bluetooth 1.1. During receive mode, VRAMP voltage is pulled down, PA2423U acts as a 35 dB isolation block between the radio and the antenna while consuming a modest 1 µA. In transmit mode, VRAMP voltage is pulled to VCC and PA2423U offers 19 dB to 21 dB of large signal gain. Using VCTL VCTL is an analog pin that is designed to control the gain of PA2423U. Applying a voltage between 0 V and VCC will adjust the gain between -15 dB and 21 dB. Used in combination with a variable drive level to PA2423U, the VCTL TM function can greatly optimize the PAE of the system at all four Bluetooth transmitted power levels. 131-DST-01 Rev 1.1 Apr-18-2006 Confidential QA041806 9 of 10 PA2423U RangeChargerTM 2.4 GHz Bluetoothtm Power Amplifier IC Preliminary http://www.sige.com Email: [email protected] Customer Service Locations: North America: 1050 Morrison Drive, Suite 100 Ottawa ON K2H 8K7 Canada Hong Kong Phone: +852 3428 7222 Fax: +852 3579 5450 Phone: +1 613 820 9244 Fax: +1 613 820 4933 San Diego Phone: +1 858 668 3541 (ext. 226) Fax: +1 858 668 3546 United Kingdom Phone: +44 1264 850754 Fax: +44 1264 852601 Product Preview The datasheet contains information from the product concept specification. SiGe Semiconductor, Inc. reserves the right to change information at any time without notification. Preliminary Information The datasheet contains information from the design target specification. SiGe Semiconductor, Inc. reserves the right to change information at any time without notification. Production testing may not include testing of all parameters. Information furnished is believed to be accurate and reliable and is provided on an “as is” basis. SiGe Semiconductor, Inc. assumes no responsibility or liability for the direct or indirect consequences of use of such information nor for any infringement of patents or other rights of third parties, which may result from its use. No license or indemnity is granted by implication or otherwise under any patent or other intellectual property rights of SiGe Semiconductor, Inc. or third parties. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SiGe Semiconductor, Inc. products are NOT authorized for use in implantation or life support applications or systems without express written approval from SiGe Semiconductor, Inc. TM TM RangeCharger , StreamCharger , and PointCharger TM are trademarks owned by SiGe Semiconductor, Inc. Copyright 2006 SiGe Semiconductor, Inc. All Rights Reserved 131-DST-01 Rev 1.1 Apr-18-2006 Confidential QA041806 10 of 10