PDF MAX12005 Data sheet ( Hoja de datos )

Número de pieza	MAX12005
Descripción	8 x 4 Satellite IF Switch Matrix
Fabricantes	Maxim Integrated Products
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No Preview Available ! 19-5554; Rev 0; 9/10 EVAALVUAAILTAIOBNLEKIT Satellite IF Switchwww.DataSheet4U.com General Description The MAX12005 satellite IF switch IC is designed for multi-user applications supporting two quad universal low-noise blocks (LNBs) to be matrix switched to four satellite receivers. The system can be easily expanded to accept 16 satellite IF inputs using the cascade option and one additional satellite IF switch IC. A configuration of eight satellite IF inputs to eight satellite receivers is also possible by using two ICs and adding eight input splitters. The insertion loss of these splitters can be com- pensated by a +6dB or +12dB input gain select. There are two ways to control the switch function. Each IC contains four DiSEqCK 2.0 decoders and four alternate tone/voltage decoders. The decoders use an integrated trimmed oscillator, simplifying the MAX12005 implementation into any system. There are four opera- tional modes, which include LNB mode (for use within the LNB), cascade master mode, cascade slave mode, and single mode. The satellite IF switch is designed on an advanced SiGe process and is available in a lead-free 48-pin TQFN surface-mount package (7mm x 7mm). Applications Direct Broadcast Satellite Receivers Satellite IF Distribution L-Band Distribution Features S 8-Input-to-4-Output Matrix Switch S Expandable to 16 Inputs with Cascade Master/ Slave Option S 950MHz to 2150MHz Operation S Greater than 30dB Switch Isolation S 0/+6/+12dB Input Stage Gain Selection to Compensate for Splitter Insertion Loss Gain Step for All Input Stages Is Commonly Controlled Through an Analog Select Pin S Four Integrated DiSEqC 2.0 Decoders with Integrated Oscillator S Alternate Tone/Voltage Detection S ESD Protected to 2kV HBM Ordering Information PART TEMP RANGE PIN-PACKAGE MAX12005ETM+ -40NC to +85NC 48 TQFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed paddle. DiSEqC is a trademark of EUTELSAT. ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 page Satellite IF Switchwww.DataSheet4U.com Pin Configuration TOP VIEW 36 35 34 33 32 31 30 29 28 27 26 25 RFOUT3 37 GND 38 VCC 39 RFOUT2 40 GND 41 VCC 42 RFOUT1 43 GND 44 VCC 45 VCC 46 MODE_SELECT 47 GAIN_SELECT 48 + MAX12005 24 GND 23 CASCADE_IN4 22 GND 21 CASCADE_IN3 20 GND 19 CASCADE_IN2 18 GND 17 CASCADE_IN1 16 GND 15 RFIN8 14 GND 13 RFIN7 1 2 3 4 5 6 7 8 9 10 11 12 TQFN PIN 1 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 35, 38, 41, 44 3 5 7 9 11 13 15 17 19 21 23 NAME RFIN1 GND RFIN2 RFIN3 RFIN4 RFIN5 RFIN6 RFIN7 RFIN8 CASCADE_IN1 CASCADE_IN2 CASCADE_IN3 CASCADE_IN4 RF Input from LNB FUNCTION Pin Description Electrical Ground RF Input from LNB RF Input from LNB RF Input from LNB RF Input from LNB RF Input from LNB RF Input from LNB RF Input from LNB Cascade Input from RF Output of Second MAX12005 in Slave Mode Cascade Input from RF Output of Second MAX12005 in Slave Mode Cascade Input from RF Output of Second MAX12005 in Slave Mode Cascade Input from RF Output of Second MAX12005 in Slave Mode 5 5 Page Satellite IF Switchwww.DataSheet4U.com Table 2. DiSEqC Slave Control Interface Command Bytes HEX VALUE 0x00 0x01 COMMAND Reset Clr Reset FUNCTION Reset DiSEqC decoder Clear reset flag Clears Status_reg, bit 0 0x04 Set Contend Set contention flag Sets Status_reg, bit 7 0x05 0x06 0x07 0x08 0x09 0x10 0x11 0x14 Contend Clr Contend Address Move C Move Status Config Switch 0 Return address only if contention flag is set Reads Address_reg Clear contention flag Clears Status_reg, bit 7 Return address unless contention flag is set Reads Address_reg Change address only if contention flag is set Writes to Address_reg Change address unless contention flag is set Writes to Address_reg Read status register flags Reads Status_reg Read configuration flags Reads Configuration_reg Read switching state flags Reads Switch_reg 0x20 Set Lo Select the low local oscillator frequency Clears Switch_reg, bit 4 0x21 Set VR Select vertical polarization (or right circular) Clears Switch_reg, bit 5 0x22 Set Pos A Select satellite position A (or position C) Clears Switch_reg, bit 6 0x23 Set S0A Select switch option A (i.e. positions A/B) Clears Switch_reg, bit 7 0x24 Set Hi Select the high local oscillator frequency Sets Switch_reg, bit 4 0x25 Set HL Select horizontal polarization (or left circular) Sets Switch_reg, bit 5 0x26 Set Pos B Select satellite position B (or position D) Sets Switch_reg, bit 6 0x27 Set S0B Select switch option B (i.e. positions C/D) Sets Switch_reg, bit 7 0x30 Sleep Ignore all bus commands except Awake Sets Status_reg, bit 1 0x31 Awake Respond to future bus commands normally Clears Status_reg, bit 1 DATA BYTES SLAVE REPLY — Framing byte — Framing byte — — — — 1 byte Framing byte Framing + data byte Framing byte Framing + data byte Framing byte 1 byte — — — — Framing byte Framing + data byte Framing + data byte Framing + data byte Framing byte — Framing byte — Framing byte — Framing byte — Framing byte — Framing byte — Framing byte — Framing byte — Framing byte — Framing byte 11 11 Page

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