SP8808 3.3GHz ÷ 8 Fixed Modulus Divider Advance Information DS2113 Issue 7.3 Features ● ● ● ● ● ● ● ● june 1998 Ordering Information Very High Speed Operation 3.3GHz Silicon Technology for low Phase Noise (Typically better than -140dBc/Hz at 10kHz) Specified Over the Full Military Temperature Range Low Power Dissipation 345mW (typ) 5V Single Supply Operation High Input Sensitivity Very Wide Operating Frequency Range Available as DESC SMD 5962-9157001MPA SP8808/A/DG Military temperature range DES9157001/AC/DGAZ (SMD) Thermal Characteristics θja = 150°C/W θjc = 50°C/W Absolute Maximum Ratings Description Supply voltage VCC Clock Input voltage Storage temperature range Junction temperature The SP8808 is one of a range of very high speed low power prescalers for professional and military applications. The device features a complementary output stage with on chip current source for the emitter follower outputs. 6.5V 2.5V p-p -65°C to +150°C +175°C SUPPLY 1 VCC VREF (2V) 400 500 500 400 7 ÷8 6 INPUT INPUT 2 3 2.5mA 2mA 6.75mA 5 GND Figure 1 SP8808 Block diagram OUTPUT OUTPUT Advance Information VCC 1 INPUT 2 INPUT 3 NC 4 SP8808 SP8808 8 NC 7 OUTPUT 6 OUTPUT 5 GND DG8 Figure 2 Pin connections Electrical Characteristics Guaranteed over the temperature range Tamb -55°C to +125°C (see note) and supply voltage range 4.75V to 5.25V. Tested at Tamb = -55°C and +110°C, VCC = 4.75V and 5.25V. Characteristic Pin Min 1 2, 3 Supply current Input sensitivity 0.65GHz to 2.8GHz 3.3GHz Input impedance (series equivalent) 2, 3 Output Voltage with fin =1000MHz Output Voltage with fin = 3GHz 6, 7 6, 7 Value Typ 69 Max 85 Units mA Conditions VCC = 5V RMS sinewave measured in 50 ohm system. See Figs. 3 & 4 ,, 175 400 50 2 0.8 1 0.4 mV mV Ω pF Vp-p Vp-p VCC = 5V VCC = 5V load as Fig. 4 NOTE: Devices must be used with a suitable heatsink to maintain chip temperature below 175°C when operating at Tamb>110°C. 500 400 * VIN (mV RMS INTO 50 OHMS) GUARANTEED* OPERATING WINDOW 300 200 100 1 2 3 FREQUENCY (GHz) Figure 3 Typical input sensitivity 2 4 Tested as specified in Table of electrical characteristics SP8808 Advance Information SIGNAL GENERATOR 50Ω POWER METER COAXIAL SWITCH 50Ω 470 +5V 1 1n 1n 3p 8 2 7 SP8808 0.1µ 0.1µ FROM OUTPUT 3 6 4 5 RATIO COUNTER OUTPUT LOAD FOR AMPLITUDE MEASUREMENTS Figure 4 Test circuit Figure 5 Typical input impedance 3 http://www.mitelsemi.com World Headquarters - Canada Tel: +1 (613) 592 2122 Fax: +1 (613) 592 6909 North America Tel: +1 (770) 486 0194 Fax: +1 (770) 631 8213 Asia/Pacific Tel: +65 333 6193 Fax: +65 333 6192 Europe, Middle East, and Africa (EMEA) Tel: +44 (0) 1793 518528 Fax: +44 (0) 1793 518581 Information relating to products and services furnished herein by Mitel Corporation or its subsidiaries (collectively “Mitel”) is believed to be reliable. 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