Rainbow Electronics MAX12005 User Manual

19-5554; Rev 0; 9/10

EVALUATION KIT

AVAILABLE

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 com­pensated 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 opera­tional 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).

Satellite IF Switch

MAX12005

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

Applications

Direct Broadcast Satellite Receivers

Satellite IF Distribution

L-Band Distribution

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.

Satellite IF Switch

ABSOLUTE MAXIMUM RATINGS

VCC to GND ..........................................................-0.3V to +3.6V

RFIN1–RFIN8 to GND ...........................................-0.3V to +1.5V

CASCADE_IN1–CASCADE_IN4 to GND .............. -0.3V to +1.5V

RFOUT1–RFOUT4 to GND ....................... -0.3V to (V

DISEQC_TX1–DISEQC_TX4 to GND .........-0.3V to (V

DISEQC_RX1–DISEQC_RX4 to GND ........-0.3V to (V

+ 0.3V)

CC
CC
CC

+ 0.3V)
+ 0.3V)

GAIN_SELECT, MODE_SELECT

to GND ...................................................-0.3V to (V

MAX12005

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.

CAUTION! ESD SENSITIVE DEVICE

CC

+ 0.3V)

Continuous Power Dissipation (T

TQFN (derate 27.8 mW/NC above +70NC) ..................2.2W

Operating Ambient Temperature Range ........... -40NC to +85NC

Maximum Junction Temperature .....................................+150NC

Storage Temperature Range ............................ -65NC to +150NC

Lead Temperature (soldering, 10s) ................................+300NC

Soldering Temperature (reflow) ......................................+260NC

DC ELECTRICAL CHARACTERISTICS

(VCC = +3.0V to +3.5V, T
output loads = 75I. Typical values are at +3.3V and at T

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Supply Voltage V

Supply Current I

+12dB GAIN_SELECT Input High­Level Voltage

+6dB GAIN_SELECT Input Voltage
Level and Range

0dB GAIN_SELECT Input Low-Level
Voltage

Single MODE_SELECT Input High­Level Voltage

Master MODE_SELECT Input Voltage
Level and Range

Slave MODE_SELECT Input Voltage
Level and Range

LNB MODE_SELECT Input Low-Level
Voltage

GAIN_SELECT and MODE_SELECT
Input Current

DC Voltage Detect Input High Level V
DC Voltage Detect Input Low Level V
DISEQC_RX_ Input Current I

DISEQC_TX_ Output High-Level
Voltage

DISEQC_TX_ Output Low-Level
Voltage

= -40NC to +85NC, mode set to master, input gain stages set to highest gain, inputs matched to 75I,

A

CC

CC

V

IH

V

IN

V

IL

V

IH

V

IN

V

IN

V

IL

I

IN

IH

IL

IN

V

OH

V

OL

= +25NC, unless otherwise noted.) (Note 1)

A

3.0 3.5 V

VCC = 3.3V, 0dB, one input selected, four
outputs selected

VIN = V

CC

(Note 2) 1.23 V
(Note 2) 1.11 V
VIN = high or low 1

I

= -1mA

LOAD

I

= +1mA 0.4 V

LOAD

= +70NC)

A

VCC -

0.4V

1/2 V

CC

Q200mV

VCC -

0.4V

2/3 V

CC

Q200mV

1/3 V

CC

Q200mV

150 250 mA

0.4 V

0.4 V

10

-

V

CC

0.4V

V

mV

V

mV

mV

FA

FA

V

2

Satellite IF Switch

AC ELECTRICAL CHARACTERISTICS

(MAX12005 EV Kit, VCC = +3.0V to +3.5V, f
set to 0dB, RF inputs matched to 75I, RF output loads = 75I. Typical values are at +3.3V and at T
noted.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Operation Frequency f
DISEQC_RX_ Tone Input Level V

Switch Gain at 950MHz (Note 3)

Cascade Input Switch Gain at
950MHz

Switch-to-Switch Gain Match D|S
Gain Slope with Frequency Between 950MHz and 2150MHz +3 dB

Single-Input Source Gain Change

3rd-Order Intermodulation Product
(Case 1)

= 950MHz, VIN = 70dBFV, T

IN

RF

fIN = 22kHz 60 mV

IN

0dB gain 0

+12dB gain +12

|S

21|

| At 950MHz (Note 4) -1.5 +3.5 dB

21

Gain change from single output con­nected to a single input to four outputs
connected to a single input

Output level set to +89dBFV by varying

IM3

three equal amplitude tones at 955MHz,
962MHz, and 965MHz; measure products
at 952MHz and 958MHz

= -40NC to +85NC, mode set to master, input gain stages

A

= +25NC, unless otherwise

A

950 2150 MHz

0 dB

-0.4 dB

-35 dBc

MAX12005

P-P

dB+6dB gain +6

Output level set to +89dBFV by varying
3rd-Order Intermodulation Product
(Case 2)

RFIN1–RFIN8 Input Return Loss |S

CASCADE_IN1–CASCADE_IN4 Input
Return Loss

RFOUT1–RFOUT4 Output Return Loss |S
Switch Isolation 55 dB
Port-to-Port Isolation 33 dB
DiSEqC Clock f

Note 1: Production tested at +25NC; guaranteed by design and characterization at -40NC and +85NC.
Note 2: To supply the specified input-voltage-detect levels requires the use of a voltage-divider comprised of 12.7kI and 1.02kI

Q0.5% tolerance resistors. The voltage being divided is expected to be V

Note 3: The common input gain step is set by analog control. All gain measurements have only one output connect to each input.

Switch gain measurements do not include cascade inputs as part of the switch signal path.

Note 4: Switch-to-switch gain match is defined as each switch to every other switch gain match. Each switch must be set up with

the same input gain step.

IM3

|S

OSC

three equal amplitude tones at 2135MHz,

2142MHz, and 2145MHz; measure prod-

ucts at 2132MHz and 2138MHz

| -12 dB

11

| -12 dB

11

| -12 dB

22

= 14.75V maximum and VOH = 16.75V minumum.

OL

-34 dBc

8 MHz

3

Satellite IF Switch

Typical Operating Characteristics

(MAX12005 EV Kit, VCC = +3.0V to +3.5V, fIN = 950MHz, VIN = 70dBFV, TA = -40NC to +85NC, mode set to master, input gain stages
set to 0dB, RF inputs matched to 75I, RF output loads = 75I. Typical values are at +3.3V and at T
Production tested at +25NC; guaranteed by design and characterization at -40NC and +85NC.)

VOLTAGE vs. CURRENT (0dB GAIN)

200

MAX12005

180

160

CURRENT (mA)

140

120

2.9 3.6

TA = +85°C

TA = +25°C

TA = -40°C

VOLTAGE (V)

S21 +85°C (0dB GAIN, VAR. IN/OUT)

4

3

2

1

0

-1

MAGNITUDE (dB)

-2

-3

-4

MAX12005 toc01

-1

GAIN (dB)

-2

-3

-4

3.53.43.33.23.13.0

MAX12005 toc04

-1

MAGNITUDE (dB)

-2

-3

-4

VOLTAGE vs. GAIN (+25°C)

2

1

0

2.9 3.6

2150MHz

VOLTAGE (V)

1550MHz

950MHz

3.53.43.33.23.13.0

S21 -40°C (0dB GAIN, VAR. IN/OUT)

4

3

2

1

0

MAX12005 toc02

MAX12005 toc05

= +25NC, unless otherwise noted.

A

S21 +25°C (0dB GAIN, VAR. IN/OUT)

4

3

2

1

0

-1

MAGNITUDE (dB)

-2

-3

-4

9.5E+08

1.15E+09
FREQUENCY (Hz)

1.35E+09

1.55E+09

RF S11 (VAR. INPUT)

-5

-10

-15

-20

-25

-30

MAGNITUDE (dB)

-35

-40

-45

-50

1.75E+09

1.95E+09

MAX12005 toc03

2.15E+09

MAX12005 toc06

-5

-10

-15

-20

-25

-30

MAGNITUDE (dB)

-35

-40

-45

-50

4

9.5E+08

1.15E+09
FREQUENCY (Hz)

1.35E+09

RF S22 (VAR. OUTPUT)

9.5E+08

1.15E+09
FREQUENCY (Hz)

1.35E+09

1.55E+09

1.55E+09

1.75E+09

1.75E+09

1.95E+09

1.95E+09

2.15E+09

MAX12005 toc07

2.15E+09

9.5E+08

-10

-20

-30

-40

-50

ISOLATION (dB)

-60

-70

-80

-90

9.5E+08

1.15E+09
FREQUENCY (Hz)

1.35E+09

1.55E+09

1.75E+09

SWITCH ISOLATION (VAR. CH)

1.15E+09
FREQUENCY (Hz)

1.35E+09

1.55E+09

1.75E+09

1.95E+09

1.95E+09

2.15E+09

MAX12005 toc08

2.15E+09

9.5E+08

1.15E+09
FREQUENCY (Hz)

1.35E+09

1.55E+09

PORT-TO-PORT ISOLATION (VAR. PORTS)

-30

-35

-40

-45

-50

-55

ISOLATION

-60

-65

-70

-75

-80

9.5E+08

1.15E+09

1.35E+09

1.55E+09

FREQUENCY (Hz)

1.75E+09

1.75E+09

1.95E+09

1.95E+09

2.15E+09

MAX12005 toc09

2.15E+09

Satellite IF Switch

Pin Configuration

MAX12005

TOP VIEW

RFOUT3

GND

V

RFOUT2

GND

V

RFOUT1

GND

V

V

MODE_SELECT

GAIN_SELECT

CC

CC

CC

CC

CC

GND

V

35

34 33 32 31 30 29 28 27

36

37

38

39

40

41

42

43

44

45

46

+

47

48

2

3 4 5 6 7 8 9 10

1

GND

RFIN2

RFIN1

VCCRFOUT4

GND

DISEQC_TX1

DISEQC_RX1

MAX12005

GND

RFIN3

DISEQC_TX2

DISEQC_RX2

GND

RFIN4

DISEQC_RX3

RFIN5

DISEQC_RX4

DISEQC_TX3

25

26

12

11

GND

RFIN6

DISEQC_TX4

GND

24

CASCADE_IN4

23

22

GND

21

CASCADE_IN3

GND

20

CASCADE_IN2

19

18

GND

17

CASCADE_IN1

16

GND

RFIN8

15

GND

14

13

RFIN7

GND

TQFN

Pin Description

PIN NAME FUNCTION

1 RFIN1 RF Input from LNB

2, 4, 6, 8, 10, 12,

14, 16, 18, 20,
22, 24, 35, 38,

GND Electrical Ground

41, 44

3 RFIN2 RF Input from LNB
5 RFIN3 RF Input from LNB
7 RFIN4 RF Input from LNB

9 RFIN5 RF Input from LNB
11 RFIN6 RF Input from LNB
13 RFIN7 RF Input from LNB
15 RFIN8 RF Input from LNB
17 CASCADE_IN1 Cascade Input from RF Output of Second MAX12005 in Slave Mode
19 CASCADE_IN2 Cascade Input from RF Output of Second MAX12005 in Slave Mode
21 CASCADE_IN3 Cascade Input from RF Output of Second MAX12005 in Slave Mode
23 CASCADE_IN4 Cascade Input from RF Output of Second MAX12005 in Slave Mode

5