Rainbow-electronics MAX12005 User Manual

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_______________________________________________________________ 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.
MAX12005
Satellite IF Switch
19-5554; Rev 0; 9/10
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed paddle.
Ordering Information
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
DiSEqC is a trademark of EUTELSAT.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE PIN-PACKAGE
MAX12005ETM+ -40NC to +85NC 48 TQFN-EP*
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Summary of Contents

Page 1 - Satellite IF Switch

_______________________________________________________________ Maxim Integrated Products 1For pricing, delivery, and ordering information, pleas

Page 2

MAX12005Satellite IF Switch10Table 1. DiSEqC Slave Control InterfaceNote 1: The primary device outputs connect directly to the satellite receivers. Th

Page 3

MAX12005Satellite IF Switch11Table 2. DiSEqC Slave Control Interface Command BytesHEX VALUE COMMAND FUNCTION DATA BYTES SLAVE REPLY0x00 Reset Reset Di

Page 4

MAX12005Satellite IF Switch12Table 2. DiSEqC Slave Control Interface Command Bytes (continued)Table 3. DiSEqC Slave Control Interface RegistersNote 1:

Page 5

MAX12005Satellite IF Switch13Table 3. DiSEqC Slave Control Interface Registers (continued) Package InformationFor the latest p

Page 6

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

Page 7

MAX12005Satellite IF Switch2Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress

Page 8

MAX12005Satellite IF Switch3AC ELECTRICAL CHARACTERISTICS(MAX12005 EV Kit, VCC = +3.0V to +3.5V, fIN = 950MHz, VIN = 70dBFV, TA = -40NC to +85NC, mode

Page 9

MAX12005Satellite IF Switch4 Typical Operating Characteristics(MAX12005 EV Kit, VCC = +3

Page 10

MAX12005Satellite IF Switch5 Pin Configuration

Page 11

MAX12005Satellite IF Switch6 Pin Description (continued)PIN NAME FUNCTION25 DISEQC

Page 12

MAX12005Satellite IF Switch7 Functional Diagram33, 36, 39, 42,

Page 13

MAX12005Satellite IF Switch8 Detailed DescriptionThe MAX12005 satellite IF switch features eight 75I inputs with three sele

Page 14

MAX12005Satellite IF Switch9DiSEqC Slave Control InterfaceThe DiSEqC interface is designed according to the DiSEqC Bus Functional Specificat

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