Product Specification PE3502 3500 MHz Low Power UltraCMOS™ Divide-by-4 Prescaler Product Description The PE3502 is a high performance monolithic UltraCMOS™ prescaler with a fixed divide ratio of 4. Its operating frequency range is 1500 MHz to 3500 MHz. The PE3502 operates on a nominal 3 V supply and draws only 12 mA. It is packaged in a small 8-lead MSOP and is ideal for microwave PLL synthesis solutions. Features • High-frequency operation: 1500 MHz to 3500 MHz • Fixed divide ratio of 4 The PE3502 is manufactured in Peregrine’s patented Ultra Thin Silicon (UTSi©) CMOS process, offering the performance of GaAs with the economy and integration of conventional CMOS. • Low-power operation: 12 mA typical @ 3 V across frequency • Small package: 8-lead MSOP Figure 2. Package Type Figure 1. Functional Schematic Diagram 8-lead MSOP D IN Q D CLK QB Q OUT CLK QB Output Buffer Pre-Amp Table 1. Electrical Specifications (ZS = ZL = 50 Ω) VDD = 3.0 V, -40° C ≤ TA ≤ 85° C, unless otherwise specified Parameter Minimum Typical Maximum Units 2.85 3.0 3.15 V 12 17 mA 1500 3500 MHz 1500 MHz ≤ Fin ≤ 3200 MHz -10 +5 dBm 3200 MHz < Fin ≤ 3500 MHz 0 +5 dBm Supply Voltage Supply Current Input Frequency (FIN) Input Power (PIN) Output Power Document No. 70-0046-04 │ www.psemi.com -5 dBm ©2005 Peregrine Semiconductor Corp. All rights reserved. Page 1 of 7 PE3502 Product Specification Electrostatic Discharge (ESD) Precautions Figure 3. Pin Configuration (Top View) DEC 3 6 GND When handling this UltraCMOS™ device, observe the same precautions that you would use with other ESD-sensitive devices. Although this device contains circuitry to protect it from damage due to ESD, precautions should be taken to avoid exceeding the rating specified in Table 3. GND 4 5 GND Latch-Up Avoidance 1 VDD IN 2 8 GND 7 OUT 3502 Unlike conventional CMOS devices, UltraCMOS™ devices are immune to latch-up. Table 2. Pin Descriptions Device Functional Considerations Pin No. Pin Name 1 VDD Power supply pin. Bypassing is required. 2 IN Input signal pin. Should be coupled with a capacitor (eg 15 pF) 3 DEC Power supply decoupling pin. Place a capacitor as close as possible and connect directly to the ground plane (eg 10 nF and 10 pF). 4 GND 5 GND Ground pin. Ground pattern on the board should be as wide as possible to reduce ground impedance. Ground pin. 6 GND Ground pin. 7 OUT Divided frequency output pin. This pin should be coupled with a capacitor (eg 100 pF). 8 GND Ground pin. Description The PE3502 takes an input signal frequency from 1500 MHz to 3500 MHz and produces an output signal frequency one-fourth that of the supplied input. In order for the prescaler to work properly, several conditions need to be adhered to. It is crucial that pin 3 be supplied with a bypass capacitor to ground. In addition, the input and output signals (pins 2 & 7, respectively) need to be AC coupled via an external capacitor as shown in the test circuit in Figure 7. The ground pattern on the board should be made as wide as possible to minimize ground impedance. Table 3. Absolute Maximum Ratings Symbol Parameter/Conditions VDD Supply voltage TST Storage temperature range Operating temperature range ESD voltage (Human Body Model) Maximum input power TOP VESD PINMAX Min Max Units 4.0 V -65 150 °C -40 85 °C 250 V 10 dBm Absolute Maximum Ratings are those values listed in the above table. Exceeding these values may cause permanent device damage. Exposure to absolute maximum ratings for extended periods may affect device reliability. ©2005 Peregrine Semiconductor Corp. All rights reserved. Page 2 of 7 Document No. 70-0046-04 │ UltraCMOS™ RFIC Solutions PE3502 Product Specification Typical Performance Data Figure 5. Device Current Figure 4. Input Sensitivity 25C 0 -40C 85C -40C 85C 14 -5 -10 Current (mA) Sensitivity (dBm) 25C 15 -15 -20 13 12 11 10 9 -25 8 -30 0.5 1.5 2.5 3.5 4.5 0.5 1.5 2.5 3.5 4.5 Frequency (GHz) Frequency (GHz) Figure 6. Output Power 25C 3.0 -40C 85C Power (dBm) 2.0 1.0 0.0 -1.0 -2.0 -3.0 0.5 1.5 2.5 3.5 4.5 Frequency (GHz) Document No. 70-0046-04 │ www.psemi.com ©2005 Peregrine Semiconductor Corp. All rights reserved. Page 3 of 7 PE3502 Product Specification Figure 7. Test Circuit Block Diagram VDD 3 V +/- 0.15 V + - 10 pF 1000 pF 50 Ω 1 8 2 7 15 pF 50 Ω 100 pF PE3502 3 6 4 5 Spectrum Analyzer Signal Generator 10 nF 10 pF Figure 8. High Frequency System Application The wideband frequency of operation of the PE3502 makes it an ideal part for use in a DBS downconverter system. INPUT FROM DBS 1 ST IF BPF SAW AGC FM DEMOD BASEBAND OUTPUT DIVIDE-BY-4 PE3293 PE3502 LOW NOISE PLL SYNTH LPF ©2005 Peregrine Semiconductor Corp. All rights reserved. Page 4 of 7 Document No. 70-0046-04 │ UltraCMOS™ RFIC Solutions PE3502 Product Specification Evaluation Kit customer to determine proper supply decoupling for their design application. Evaluation Kit Operation The MSOP Prescaler Evaluation Board was designed to help customers evaluate the PE3502 Divide-by-4 Prescaler. On this board, the device input (pin 2) is connected to connector J1 through a 50 Ω transmission line. A series capacitor (C3) provides the necessary DC block for the device input. It is important to note that the value of this capacitance will impact the performance of the device. A value of 15 pF was found to be optimal for this board layout; other applications may require a different value. The device output (pin 7) is connected to connector J3 through a 50 Ω transmission line. A series capacitor (C1) provides the necessary DC block for the device output. Note that this capacitor must be chosen to have a low impedance at the desired output frequency the device. The value of 100 pF was chosen to provide a wide operating range for the evaluation board. The board is constructed of a two-layer FR4 material with a total thickness of 0.031”. The bottom layer provides ground for the RF transmission lines. The transmission lines were designed using a coplanar waveguide above ground plane model with trace width of 0.030”, trace gaps of 0.007”, dielectric thickness of 0.028”, metal thickness of 0.0014” and εr of 4.4. Note that the predominate mode for these transmission lines is coplanar waveguide. J2 provides DC power to the device. Starting from the lower left pin, the second pin to the right (J2-3) is connected to the device VDD pin (1). Two decoupling capacitors (10 pF, 1000 pF) are included on this trace. It is the responsibility of the Document No. 70-0046-04 │ www.psemi.com The DEC pin (3) must be connected to a low impedance AC ground for proper device operation. On the board, two decoupling capacitors (C6 = 10 nF, C4 = 10 pF), located on the back of the board, perform this function. Applications Support If you have a problem with your evaluation kit or if you have applications questions call (858) 731-9400 and ask for applications support. You may also contact us by fax or e-mail: Fax: (858) 731-9499 E-Mail: [email protected] Figure 9. Evaluation Board Layouts Peregrine Specification 101/0035 Figure 10. Evaluation Board Schematic Peregrine Specification 102/0055 ©2005 Peregrine Semiconductor Corp. All rights reserved. Page 5 of 7 PE3502 Product Specification Figure 11. Package Drawing 8-lead MSOP TOP VIEW 0.65BSC .525BSC 7 8 6 5 2.45±0.10 2X 3.00±0.10 0.51±0.13 -B- 0.51±0.13 1 2 3 4 .25 A B C -C- 2.95±0.10 0.86±0.08 2.95±0.10 1.10 MAX -A0.10 A +0.07 0.33 -0.08 0.08 A B C 3.00±0.10 0.10±0.05 4.90±0.15 3.00±0.10 FRONT VIEW SIDE VIEW Table 4. Ordering Information Order Code Part Marking Description Package Shipping Method 3502-21 3502 PE3502-08MSOP-50A 8-lead MSOP 50 units / Tube 3502-22 3502 PE3502-08MSOP-2000C 8-lead MSOP 2000 units / T&R 3502-00 PE3502-EK PE3502-08MSOP-EK Evaluation Kit 1 / Box 3502-51 3502 PE3502G-08MSOP-50A Green 8-lead MSOP 50 units / Tube 3502-52 3502 PE3502G-08MSOP-2000C Green 8-lead MSOP 2000 units / T&R ©2005 Peregrine Semiconductor Corp. All rights reserved. Page 6 of 7 Document No. 70-0046-04 │ UltraCMOS™ RFIC Solutions PE3502 Product Specification Sales Offices The Americas North Asia Pacific Peregrine Semiconductor Corp. Peregrine Semiconductor K.K. 9450 Carroll Park Drive San Diego, CA 92121 Tel 858-731-9400 Fax 858-731-9499 5A-5, 5F Imperial Tower 1-1-1 Uchisaiwaicho, Chiyoda-ku Tokyo 100-0011 Japan Tel: +81-3-3502-5211 Fax: +81-3-3502-5213 Europe Peregrine Semiconductor Europe Commercial Products: Bâtiment Maine 13-15 rue des Quatre Vents F- 92380 Garches, France Tel: +33-1-47-41-91-73 Fax : +33-1-47-41-91-73 Space and Defense Products: 180 Rue Jean de Guiramand 13852 Aix-En-Provence cedex 3, France Tel: +33(0) 4 4239 3361 Fax: +33(0) 4 4239 7227 South Asia Pacific Peregrine Semiconductor 28G, Times Square, No. 500 Zhangyang Road, Shanghai, 200122, P.R. China Tel: +86-21-5836-8276 Fax: +86-21-5836-7652 For a list of representatives in your area, please refer to our Web site at: www.psemi.com Data Sheet Identification Advance Information The product is in a formative or design stage. The data sheet contains design target specifications for product development. Specifications and features may change in any manner without notice. Preliminary Specification The data sheet contains preliminary data. Additional data may be added at a later date. Peregrine reserves the right to change specifications at any time without notice in order to supply the best possible product. Product Specification The data sheet contains final data. In the event Peregrine decides to change the specifications, Peregrine will notify customers of the intended changes by issuing a DCN (Document Change Notice). Document No. 70-0046-04 │ www.psemi.com The information in this data sheet is believed to be reliable. However, Peregrine assumes no liability for the use of this information. Use shall be entirely at the user’s own risk. No patent rights or licenses to any circuits described in this data sheet are implied or granted to any third party. Peregrine’s products are not designed or intended for use in devices or systems intended for surgical implant, or in other applications intended to support or sustain life, or in any application in which the failure of the Peregrine product could create a situation in which personal injury or death might occur. Peregrine assumes no liability for damages, including consequential or incidental damages, arising out of the use of its products in such applications. The Peregrine name, logo, and UTSi are registered trademarks and UltraCMOS is a trademark of Peregrine Semiconductor Corp. ©2005 Peregrine Semiconductor Corp. All rights reserved. Page 7 of 7