SP8808

SP8808 3.3GHz ÷ Fixed Modulus Divider Advance Information DS2113 ISSUE 7.3 June 1998 Features • • • • • • • • 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 Ordering Information SP8808/A/DG Military temperature range DES9157001/AC/DGAZ (SMD) Thermal Characteristics θja = 150°C/W θjc = 50°C/W Description 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. Absolute Maximum Ratings Supply voltage VCC Clock Input voltage Storage temperature range Junction temperature SUPPLY 1 VCC VREF (2V) 400 400 7 ÷8 6 2 3 2.5mA 6.75mA 2mA OUTPUT OUTPUT 500 500 6.5V 2.5V p-p -65°C to +150°C +175°C INPUT INPUT 5 GND Figure 1 - SP8808 Block diagram SP8808 Advance Information INPUT INPUT NC 2 3 4 SP8808 VCC 1 8 7 6 5 NC OUTPUT OUTPUT 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 Supply current Input sensitivity 0.65GHz to 2.8GHz 3.3GHz Input impedance (series equivalent) Pin Min 1 2, 3 Value Typ 69 Max 85 175 400 Units mA mV mV Ω pF Conditions VCC = 5V RMS sinewave measured in 50 ohm system. See Figs. 3 & 4 Output Voltage with fin =1000MHz Output Voltage with fin = 3GHz 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) 300 200 100 ;;; ;;; 2, 3 50 2 0.8 6, 7 6, 7 1 0.4 Vp-p Vp-p VCC = 5V VCC = 5V load as Fig. 4 * GUARANTEED* OPERATING WINDOW Tested as specified in Table of electrical characteristics 1 2 3 4 FREQUENCY (GHz) Figure 3 - Typical input sensitivity 2 Advance Information SP8808 SIGNAL GENERATOR COAXIAL SWITCH 50Ω +5V 1 1n 2 8 7 50Ω POWER METER FROM OUTPUT 0.1µ 470 3p SP8808 3 0.1µ 1n 4 6 5 RATIO COUNTER OUTPUT LOAD FOR AMPLITUDE MEASUREMENTS Figure 4 - Test circuit Figure 5 - Typical input impedance 3 For more information about all Zarlink products visit our Web Site at w ww.zarlink.com Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries (collectively “Zarlink”) is believed to be reliable. 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