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ZLNB2006 ZLNB2009
DUAL TONE AND POLARITY SWITCH LNB MULTIPLEX CONTROLLER
DEVICE DESCRIPTION
The ZLNB2006/09/10 group of dual polarisation and tone switch controller are part of a wide range of satellite receiver LNB support circuits available from Zetex. Each part features two completely independent channels, each providing logic outputs to control LNB polarisation selection, local oscillator selection and the ZLNB2009/10 also provides downfeed disable. They are intended for use in Twin Universal and Quad LNBs, replacing many discrete components to save both manufacturing cost and PCB size whilst improving reliability. T h e tw o pol a ri s at i on c ont r ol i nput s o f t h e ZLNB2006/09/10 have a nominal threshold of 14.75V. The threshold is temperature compensated to minimise drift. Each features a low and stable input current that enables transient protection to be achieved with the addition of only a single resistor per channel. Multi Feed LNBs can be called to operate with one or more of their controlling receivers powered down/disconnected, with attendant cable mismatch problems. To ease design for this situation, each polarisation input of the ZLNB2009/10 has a second threshold set at 9.5V. An input voltage below this threshold indicates "receiver not present", switching the relevant control channels high. This logic output can be used to disable the associated downfeed driver, eliminating any problems due to cable mismatch.
ZLNB2010
Universal LNB local oscillator selection is achieved by detection of a low level AC voltage superimposed on the polarisation control voltage. To facilitate this function, the ZLNB2006/09/10 includes a separate tone detector for each channel. Full control of detector bandwidth and sensitivity is provided using two external resistors and capacitors. In the ZLNB2006/9, additional control of tone switch delays is provided to assist with the rejection of low frequency control signals intended for other systems. Polarisation switch and tone detector outputs can source and sink 10mA making them suitable to drive TTL and CMOS logic, pin diodes and IF-amp supply switching. The ZLNB2006/09/10 operates from a single supply which can be anything from 5-10V. Their quiescent current is typically only 6mA and this does not change significantly with load or logic state. They are available in the space saving QSOP16 or QSOP20 surface mount package.
FEATURES
* Dual polarisation switch * Temperature compensated polarisation switch
threshold
* Wide supply operating range * Low quiescent current * Few external components * Eliminates many discrete components
* Transient resistant inputs * Includes Receiver-Off detector (ZLNB2009/10) * Dual tone switch * User adjustable filter centre frequency and
bandwidth
APPLICATIONS
* Twin Universal LNB * Multi Feed Universal Lnb's * Twin Universal IF switch boxes * LNB switch boxes
* User adjustable tone switching delays * Tone and Pol outputs are TTL, CMOS, Pin diode
and IF amp capable ISSUE 1 - APRIL 2002 1
ZLNB2006 ZLNB2009
Supply Voltage Supply Current VPOL1 and VPOL2 Input Voltage Operating Temperature Storage Temperature
ZLNB2010
-0.6V to 12V 100mA QSOP20 25V Continous -40 to 85C -40 to 125C 500mW
ABSOLUTE MAXIMUM RATINGS Power Dissipation (Tamb 25 C)
QSOP16 500mW
ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated): Tamb= 25 C,VCC=5V
SYMBOL PARAMETER CONDITIONS Min V CC I CC Supply Voltage Supply Current IHVOUT1,2 =ITOUT1,2 =0 IT OUT1,2 =0,IHVOUT1,2 =10mA, VPOL =15.5V V POL1 = VPOL2 = 25V (Note 2) T amb =-40C to 70C (Note 2) T amb =-40C to 70C (Note 2) 10 14.0 8.0 5 5.5 26
LIMITS
Typ Max 10 12 32
UNITS
V mA mA
V POL1 and VPOL2 Inputs I POL V TPOL V TEN T SPOL Current Threshold Voltage Enable Threshold Voltage (ZLNB2009/10 only) Switching Speed Filter Amplifier IB V OUT V OUT I OUT I OUT GV Note:1) The parameters Filter Amplifier VOUT, IOUT, Rectifier VOUT and Comparator Threshold Voltage are all directly (linearly) related to Vcc. 2) Applied via 10k resistors Input Bias Current V OUT (Note 1) (ZLNB2006 only) I OUT (Note 1) (ZLNB2006 only) I OUT (Note 1) (ZLNB2000/10 only) Voltage Gain RF1=150k RF1=150k 0.02 1.75 0.07 1.95 2.215 440 470 0 587 587 46 733 782 0.25 2.15 A V V A A dB 25 14.75 9.5 40 15.5 10.0 100 A V V S
V OUT (Note 1) (ZLNB2009/10 only) RF1=150k V OUT = 2.20V, V FIN = 2.42V V OUT = 2.20V, V FIN = 2.50V F=22kHz, Vin=1mV
ISSUE 1 - APRIL 2002 2
ZLNB2006 ZLNB2009
ZLNB2010
ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated): Tamb= 25 C,VCC=5V
SYMBOL PARAMETER CONDITIONS Min Rectifier (ZLNB2006 and ZLNB2009 ONLY) V REC VOUT (Note 1) ILeakage RF1=150k, IL=10A RF1=150k, VOUT=3V (Note 1) 2.2 2.45 20 2.980 100 150 300 2.69 200 V nA
LIMITS
Typ Max
UNITS
Comparator (ZLNB2009 and ZLNB2010 ONLY) V TH DC V TH Threshold DC (Note 1) Threshold AC F=0 Test Circuit 1 (ZLNB2010) Test Circuit 2 (ZLNB2009) V mV
Comparator (ZLNB2006 ONLY) V TH DC V TH AC Y VH Y VH Y VL Note:1) The parameters Filter Amplifier VOUT, IOUT, Rectifier VOUT and Comparator Threshold Voltage are all directly (linearly) related to Vcc. 2) Applied via 10k resistors Threshold DC (Note 1) Threshold AC Y Outputs Voltage High Voltage High Voltage Low F=0 Test Circuit 2 I TOUT 1,2 = -10 A I TOUT 1,2 = -5 A I TOUT 1,2 = -5mA 3.00 100 VCC -0.3 VCC -1.2 0 3.34 150 VCC -0.17 VCC -0.95 0.29 3.67 300 VCC VCC 0.5 V mV V V V
ISSUE 1 - APRIL 2002 3
ZLNB2006 ZLNB2009
TEST CIRCUIT 1
ZLNB2010
Y21 Y22 C4 68pF C3 Y02 Y01 R4 150k Vcc Fout2 Fin2 Vpol2
1
Y11 Y12 Y32 Y31 Gnd Fout1 Fin1 Vpol1 R2 150k 68pF C1 470pF C2
ZLNB2010
470pF V1 5V
R3 10k
R1 10k
V2 (See Note 1) Note 1: V2 Characteristics Type:AC source Frequency:- 22kHz Voltage:300mVp/p Enabled 100mVp/p Disabled
TEST CIRCUIT 2
Y21 Y22 Y02 Y01 C4 68pF C3 Vcc NC R4 150k Fout2 CR2 Fin2 Vpol2
Y11 Y12 Y32 Y31 Gnd NC Fout1 CR1 Fin1 Vpol1 R2 150k 68pF C1 470pF C2 V1 5V
ZLNB2006 ZLNB2009
470pF
R3 10k
R6 1M
C6 100nF
C5 100nF
R5 1M
R1 10k
V2 (See Note 1) Note 1: V2 Characteristics Type:AC source Frequency:- 22kHz Voltage:300mVp/p Enabled 100mVp/p Disabled
ISSUE 1 - APRIL 2002 4
ZLNB2006 ZLNB2009
TYPICAL CHARACTERISTICS
ZLNB2010
70
Vcc = 5V
1.4 1.2
Open Loop Gain (dB)
60 50 40 30 20 10 0 100 1k 10k 100k 1M 10M
Vcc = 5V Vin=0.1Vp/p Test Circ. 1
Fout Voltage (Vp/p)
1.0 0.8 0.6 0.4 0.2 0 100 1k 10k 100k 1M
Frequency (Hz)
Frequency (Hz)
Open Loop Gain v Frequency
Filter Response
Open Loop Phase (Degrees)
Vcc = 5V
180 150 120 90 60 30 0 100 1k 10k 100k 1M 10M
Frequency (Hz)
Open Loop Phase v Frequency
ISSUE 1 - APRIL 2002 5
ZLNB2006 ZLNB2009
ZLNB2010
Additionally the front end bias requirements of the LNB are provided by ZNBG4000 or ZNBG6000 offering a very efficient and cost effective solution
The following diagram shows a typical block diagram for a twin universal LNB design. The ZLNB2006/09/10 group of devices provides the two polarity and two tone switches required to decode the two independent receiver feeds. The ZLNB2009/10 devices are also able to detect the absence of receiver connection to either port of the LNB providing all outputs to go high hence disabling of the port. This allows the avoidance of unwanted signal reflections from an unterminated down feed cable.
Horizontal Gain Stage GaAs/HEMTFET Antenna
High Band
Control Input <=13V-Horizontal >=14.5V-Vertical
DC Input 13-25V High Band Horizontal Low Band Horizontal H/V Output 1
+
Mixer
1
3
+
Low Band
Low Band
High Band
+
2
High Band
ASTRA 10.95 GHz-11.7 GHz Standard Band 10.7 GHz-11.8 GHz Enhanced Band
Bias Generator ZNBG40XX Series
ZLNB20XX Series Dual H/V Switch & 22kHz Switch
Control
PIN Diode MUX
IF down feed 950-1750 MHz - Standard Band 950-2050 MHz - Enhanced Band
High Band Vertical Low Band Vertical
4
H/V Output 2
Mixer
Vertical Antenna
Gain Stage GaAs/HEMTFET
+
Low Band
ISSUE 1 - APRIL 2002 6
ZLNB2006 ZLNB2009
APPLICATION CIRCUIT EXAMPLES
ZLNB2010
The following circuit shows the additional components that will be used for polarisation mode and 22kHz tone detection in typical ZLNB2010 application
Vcc Y21 Y22 C4 68pF C3 Y02 Y01 R4 150k Vcc Fout2 Fin2 Vpol2 1 Y11 Y12 Y32 Y31 Gnd Fout1 Fin1 Vpol1 R2 150k 68pF C1 470pF C2
ZLNB2010
470pF
R3 10k LNB Downfeed No.2
R1 10k
LNB Downfeed No.1
The following circuit shows the additional components that will be used for polarisation mode and 22kHz tone detection in typical ZLNB2006/9 application
Y21 Vcc Y22 Y02 Y01 C4 68pF C3 Vcc NC R4 150k Fout2 CR2 Fin2 Vpol2
Y11 Y12 Y32 Y31 Gnd NC Fout1 CR1 Fin1 Vpol1 R2 150k 68pF C1 470pF C2
ZLNB2006 ZLNB2009
470pF
R3 10k LNB Downfeed No.2
R6 1M
C6 100nF
C5 100nF
R5 1M
R1 10k
LNB Downfeed No.1
ISSUE 1 - APRIL 2002 7
ZLNB2006 ZLNB2009
ZLNB2010
FURTHER INFORMATION
1) Inputs VPOL1 and VPOL2 are designed to be wired to the power inputs of an LNB via high value (10k) resistors. Input VPOL1 controls a combination of the Yn1 outputs. Input VPOL2 controls a combination of the Yn2 outputs. With either input voltage set at or below 14V, one of the corresponding Y0n or Y2n outputs becomes active dependent upon the presence of a tone. With either input voltage set at or above 15.5V, one of the corresponding Y1n or Y3n outputs becomes active dependent upon the presenence of a tone. Should the voltage applied to either VPOL input fall below 9.5V, all outputs on the corresponding output will go high, otherwise these outputs are as normal. Any input or output not required may be left open-circuit. 2) The ZLNB2010 includes the circuitry necessary to detect the presence of 22kHz tones modulated on either of two supply inputs to the LNB. The main elements of the detectors in each channel are an op-amp enabling the construction of a Sallen Key filter, a rectifier/smoother and a comparator. Full user control is given over the centre frequency and bandwidth of the filter using two external resistors and capacitors (one of these resistors shares the function of overvoltage protection of the corresponding VPOL pin, i.e. the 10k referenced in note 1). The comparator circuit utilises no external components. The presence of a 22kHz tone applied to pin Fin1 or Fin2 switches the corresponding output Yn1 or Yn2 high. 3) The ZLNB2006/9 includes the circuitry necessary to detect the presence of 22kHz tones modulated on either of two supply inputs to the LNB. The main elements of the detectors in each channel are an op-amp enabling the construction of a Sallen Key filter, a rectifier/smoother and a comparator. Full user control is given over the centre frequency and bandwidth of the filter using two external resistors and capacitors (one of these resistors shares the function of overvoltage protection of the corresponding Vpol pin, i.e. the 10k referenced in note 1). The comparator circuit utilises no external components. The presence of a 22kHz tone applied to pin Fin1 or Fin2 switches the corresponding output Yn1 or Yn2 high. Pins Crec1 and Crec2 on the ZLNB2006/9 make accessible the outputs of the tone switch rectifiers and provides a means of controlling tone switch delays. Significant switching delays may be necessary to avoid incorrect operation in the presence of unwanted interference (e.g. switching tones intended for other signalling systems). For correct operation of the IC, a capacitor and a parallel connected resistor should be connected between each Crec pin and ground. The Yout low to high delays are set solely by the added capacitors at approximately 22ms/uF. The high to low delays are set by the time constant of each resistor capacitor combination at approximately 0.2CR seconds. A capacitor of 100nF and resistor of 1M will give a low to high delay of around 2.2ms and a high to low delay of 20ms, providing immunity to the 60Hz square wave signal occasionally used for switching between multiple LNB units.
ISSUE 1 - APRIL 2002 8
ZLNB2006 ZLNB2009
CONTROL TABLES ZLNB2006 Channel 1:Tone 1 Off Off On On Vpol1 14V 15.5V 14 15.5 Y01 Low High High High Y11 High Low High High Y21 High High Low High
ZLNB2010
Y31 High High High Low
Channel 2:Tone 2 Off Off On On Vpol2 14V 15.5V 14 15.5 Y02 Low High High High Y12 High Low High High Y22 High High Low High Y32 High High High Low
ZLNB2009/10 Channel 1:Tone 1 Off Off On On Don't Care Vpol1 14V 15.5V 14 15.5 8V Y01 Low High High High High Y11 High Low High High High Y21 High High Low High High Y31 High High High Low High
Channel 2:Tone 2 Off Off On On Don't Care Vpol2 14V 15.5V 14 15.5 8V Y02 Low High High High High Y12 High Low High High High Y22 High High Low High High Y32 High High High Low High
ISSUE 1 - APRIL 2002 9
ZLNB2006 ZLNB2009
ZLNB2010
ZLNB2009 PINOUT FOR QSOP20 PACKAGE DESIGNATOR - Q20
ZLNB2006 PINOUT FOR QSOP20 PACKAGE DESIGNATOR - Q20
Y21 Y22 Y02 Y01 Vcc NC Fout2 CR2 Fin2 Vpol2
Y11 Y12 Y32 Y31 Gnd NC Fout1 CR1 Fin1 Vpol1
Y21 Y22 Y02 Y01 Vcc NC Fout2 CR2 Fin2 Vpol2
Y11 Y12 Y32 Y31 Gnd NC Fout1 CR1 Fin1 Vpol1
ZLNB2010 PINOUT FOR QSOP16 PACKAGE DESIGNATOR - Q16
ORDERING INFORMATION
Part Number ZLNB2006Q20 Package QSOP20 QSOP20 QSOP16 Part Mark ZLNB2006 ZLNB2009 ZLNB2010
1 Y21 Y22 Y02 Y01 Vcc Fout2 Fin2 Vpol2 Y11 Y12 Y32 Y31 Gnd Fout1 Fin1 Vpol1
ZLNB2009Q20 ZLNB2010Q16
SAMPLE ORDERING INFORMATION
Part Number #ZLNB2006Q20 #ZLNB2009Q20 #ZLNB2010Q16 Package QSOP20 QSOP20 QSOP16 Part Mark ZLNB2006 ZLNB2009 ZLNB2010
ISSUE 1 - APRIL 2002 10
ZLNB2006 ZLNB2009
PACKAGE DIMENSIONS
ZLNB2010
QSOP16
DIM Millimetres MIN A B C D E F G 4.80 0.635 0.23 REF 0.20 3.81 1.35 0.10 0.30 3.99 1.75 0.25 MAX 4.98 Inches MIN 0.189 MAX 0.196
QSOP20
DIM Millimetres MIN A B C 0.012 0.157 0.069 0.01 D E F G 8.55 0.635 1.47 REF 0.20 3.81 1.35 0.10 0.30 3.99 1.75 0.25 MAX 8.74 Inches MIN 0.337 MAX 0.344
0.025 NOM 0.009 REF 0.008 0.15 0.053 0.004
0.025 NOM 0.058 REF 0.008 0.15 0.053 0.004 0.012 0.157 0.069 0.01
(c) Zetex plc 2001
Zetex plc Fields New Road Chadderton Oldham, OL9 8NP United Kingdom Telephone (44) 161 622 4422 Fax: (44) 161 622 4420 Zetex GmbH Streitfeldstrae 19 D-81673 Munchen Germany Telefon: (49) 89 45 49 49 0 Fax: (49) 89 45 49 49 49 Zetex Inc 700 Veterans Memorial Hwy Hauppauge, NY11788 USA Telephone: (631) 360 2222 Fax: (631) 360 8222 Zetex (Asia) Ltd 3701-04 Metroplaza, Tower 1 Hing Fong Road Kwai Fong, Hong Kong China Telephone: (852) 26100 611 Fax: (852) 24250 494
These offices are supported by agents and distributors in major countries world-wide. This publication is issued to provide outline information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. The Company reserves the right to alter without notice the specification, design, price or conditions of supply of any product or service. For the latest product information, log on to www.zetex.com
ISSUE 1 - OCTOBER 2001 11

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