Preliminary Information SL1914 SL1914 Satellite Tuner Front End LNA with AGC Preliminary Information DS5137 Issue no 1.6 April 1999 Features Ordering Information ● ● ● ● ● ● Single chip solution for satellite tuner LNA and AGC Provides for 30 dB minimum AGC Low DSB NF at maximum gain High signal handling at minimum gain Provides differential output drive ESD protection (Normal ESD handling procedures should be observed) Applications ● ● ● Satellite receiver systems Data communications systems Master Antennae Distribution Systems SL1914A/KG/MP1S SL1914A/KG/MP1T Description The SL1914 is a wideband LNA with AGC designed primarily for application in satellite tuner front ends, offering high signal handling capability with low noise figure compatible with most common tuner input requirements. The SL1914 is optimised to complement the SL1925, ZIF quadrature downconverter, integrating all the active RF circuitry within the tuner, in a highly compact, efficient solution, and offering a full 1-45 MS/s tuner capability. . 6 RE INPUT AGC 2 5 4 1 8 3 OUTPUT OUTPUTB Vcca Vccb Vee Figure 1 Block Diagram 1 SL1914 Preliminary Information 8 Vcca AGC SPOT REF. Vee Vccb N/C RFIP OP OPB MP8 Figure 2 Pin Connections Quick Reference Data Characteristic Operating frequency Units 950 - 2150 MHz Input DSB NF at max gain 8 dB Maximum conversion gain 20 dB Minimum conversion gain -10 dB IPIP32T 117 dBµV IPIP22T 127 dBµV Functional Description The SL1914 is a bipolar, low noise AGC amplifier designed primarily for application in satellite tuner front ends. It contains a low noise input amplifier, an AGC stage with a minimum of 30dB of gain control and a 75 Ohm output drive. It replaces all active circuitry in conventional architectures. . 2 The typical key performance numbers under nominal load ambient and supply conditions are contained in table headed Quick Reference Data. Preliminary Information SL1914 Electrical Characteristics o o Tamb= -20 C to +70 C, Vee= 0V, Vcc = 5V±5%, These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage unless otherwise stated. Characteristic Pin Value Min Supply current Operating range Input impedance IF input return loss Input DSB NF Variation in NF with gain setting Conversion gain minimum maximum 1, 8 Typ Max 110 150 2150 950 2 2 2 Units 75 8 7 9 -1 -10 21 Gain variation within channel +0.5 mA MHz Ω dB dB dB/dB dB dB dB dB Input referred 1 dB gain compression Input referred IP3 2 107 dBµV 2 117 dBµV Input referred IP2 2 125 dBµV Variation in second and third order intermodulation intercept points with gain setting AGC control slope variation AGC control input current Output impedance Output return loss -1 4 4:1 4 5, 6 5, 6 ±350 75 6 Conditions AGC = 4V Maximum gain, AGC = 1V Differential power gain into 75Ω Vagc = 4V See note 1. Vagc = 1V AGC monotonic from Vee to Vcc Maximum channel bandwidth of 54MHz, within range 950 2150MHz Minimum specified gain setting Minimum specified gain setting, two tones at 99dBµV Minimum specified gain setting, two tones at 99dBµV dB/dB µA Ω dB Note 1: The AGC voltage should not exceed 4V. 3 SL1914 Preliminary Information Absolute Maximum Ratings All voltages referred to Vee at 0V. Characteristics Supply voltage IFIN and IFINB input voltage All I/O port DC offset AGC input DC offset Storage temperature Junction temperature Package thermal resistance, chip to case Package thermal resistance, chip to ambient Power consumption at 5.25V ESD protection 4 Min Max Unit -0.3 7 117 VCC+0.3 4 150 150 39.8 V dBµV V V °C °C °C/W 120 °C/W 790 mW kV -0.3 -0.3 -55 2 Conditions Transient condition only Except AGC (pin 4) Mil std-883 latest revision method 3015 class 1 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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