ZLNB2010Q20TC中文资料应用文章市场行情现货热卖使用介绍-中国IC网-芯三七

ZLNB2012

DUAL TONE AND POLARITY SWITCH

LNB MULTIPLEX CONTROLLER

DEVICE DESCRIPTION

The ZLNB2012 dual polarisation and tone switch Universal LNB local oscillator selection is achieved by

controller is one of a wide range of satellite receiver detection of a low level AC voltage superimposed on

LNB support circuits available from Zetex. It features the polarisation control voltage. To facilitate this

two completely independent channels, each providing function, the ZLNB2012 includes a separate tone

logic outputs to control LNB polarisation selection, detector for each channel. Control of detector

local oscillator selection and downfeed disable. It is bandwidth and sensitivity is provided using an

intended for use in Twin, Quad and multiple feed external resistor and capacitor for each channel. The

Universal LNBs, replacing many discrete components tone detector has been designed give excellent

to save both manufacturing cost and PCB size whilst rejection of low frequency control signals and

improving reliability.

DiSEqC™ tone bursts.

The two highly accurate polarisation control inputs of The ZLNB2012 has been specifically designed to

the ZLNB2012 have a nominal threshold of 14.25V and minimise the solution cost whilst being flexible. The

to meet the required demanding needs from some ZLNB2012 only requires two external components per

broadcasters they have a switching range of 14.0V to channel to give full user control and functionality. The

14.5V. The threshold is temperature compensated to ZLNB2012 also includes complimentary outputs so

minimise drift. Each features a low and stable input that it can directly drive many multiplexer IC’s without

current that enables transient protection to be the need of an inverter. Any unused outputs can be left

achieved with the addition of only a single resistor per open circuit without any effect to the remaining circuits

channel.

operation Polarisation switch and tone detector

outputs can directly drive TTL and CMOS logic, pin

diodes, IF-amp supply switching and multiplexer IC’s.

Multi Feed LNBs can be called to operate with one or

more of their controlling receivers powered

down/disconnected, with attendant cable mismatch The ZLNB2012 operates from a single supply which

problems. To ease design for this situation, each can be anything from 5-8V. Its quiescent current is

polarisation input of the ZLNB2012 has a second typically only 9mA and this does not change

threshold set at 9V. An input voltage below this significantly with load or logic state. It is available in the

threshold indicates“ receiver not present”, and space saving QSOP16 surface mount package.

switches the relevant control channels high. This logic

output can be used to disable the associated downfeed

driver, eliminating any problems due to cable

mismatch.

FEATURES

· Dual polarisation and tone switch

· Low frequency and DiSEqC control signals

rejection

· Reduced Cost Solution, only 2 external components

per channel

· Eliminates many close tolerance discrete

components

· Close tolerance (14-14.5V) and temperature

compensated polarisation switch

· Wide supply operating range

· Low quiescent current

· Multiplexer IC direct drive

· Tone and pol. Outputs are TTL, CMOS, Pin diode and

APPLICATIONS

· Twin Universal LNB’s

IF amp capable

· Transient resistant inputs

· Quad Universal LNB’s

· Multi Feed Universal LNB’s

· LNB switch boxes

· Includes Receiver-Off detector

· User adjustable filter centre frequency and

bandwidth

PROVISIONAL ISSUE A - OCTOBER 2001

1

ZLNB2012

ABSOLUTE MAXIMUM RATINGS

Power Dissipation (T

QSOP16

amb 25 C)

Supply Voltage

-0.6V to 12V

500mW

Supply Current

500mA

V

_POL1and V_POL2

Input Voltage

25V Continous

-40 to 80°C

Operating Temperature

Storage Temperature

-40 to 85°C

ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated):

=5V

T

amb= 25ЊC,VCC

SYMBOL

PARAMETER

CONDITIONS

UNITS

LIMITS

Typ

Min

Max

8

V_CC

Supply Voltage

Supply Current

5

V

I_CC

HOR1,2= BHOR1,2= TD1,2= BTD1, 2= 0mA

V_POL1= V_POL2= Don’t Care

F_IN1= F_IN2= Don’t Care

9

12

mA

V_POL1and V_POL2Inputs

V_POL1= V_POL2= 25V (Note 2)

I_POL

V_TPOL

T_SPOL

Current

Threshold Voltage

Switching Speed

100

14

200

14.25 14.5

100

240

␮A

V

␮S

T_amb=-40°C to 80°C

HOR_OUT1 and HOR_OUT2 Outputs

VHOR_HIGHVoltage High

VHOR_LOWVoltage Low

IHOR_OUT1,2=-100␮A,V_POL1,2=14.5V

IHOR_OUT1,2=5mA,V_POL1,2=14V

V_CC-1.0 V_CC0.7 V_CC

0.30 0.5

V

0

BHOR_OUT1 and BHOR_OUT2 Outputs

VBHOR_HIGHVoltage High

VBHOR_LOWVoltage Low

IBHOR_OUT1,2=-100␮A,V_POL1,2=14.0V

IBHOR_OUT1,2=5mA,V_POL1,2=14.5V

V_CC-1.0 V_CC0.7 V_CC

0.30 0.5

V

0

Enable 1,2

Outputs

VEN_HIGH

VEN_LOW

Voltage High

Voltage Low

IEnable 1,2=-100␮A,V_POL1,2=10V

IEnable 1,2=500␮A,V_POL1,2=8.0V

V_CC-1.0 V_CC0.7 V_CC

V

0

0.30

0.5

Filter Amplifier

3

V_OUT

F_inz

I_fin=0

1.75

1.95

150

30

2.15

V

Bias Voltage

Input Impedance

Amplifier Gain

V_FIN=100mV p/p

⍀

AG

V/mA

3

FV_T

V Threshold

100

170

350

mV

p/p

Note:-

1) The parameters Filter Amplifier V

related to Vcc.

, I

, Rectifier V

and Comparator Threshold Voltage are all directly (linearly)

OUT

OUT OUT

2) Applied via 1k resistors

3) These parameters are linear related to V_CC

PROVISIONAL ISSUE A - OCTOBER 2001

2

ZLNB2012

ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated):

T

=5V

amb= 25ЊC,VCC

SYMBOL

PARAMETER

CONDITIONS

UNITS

LIMITS

Typ

Min

Max

TD 1,2 Outputs

Voltage high

V_VHIGH

ITD 1,2=-100␮A, Test Circuit 1,

V_CC-1.0 V_CC-0.7 V_CC

0.3 0.5

V

Tone enabled

V_VLOW

Voltage Low

0

V

ITD 1,2=15mA, Test Circuit 1,

Tone disabled

BTD 1,2 Outputs

Voltage high

V_VHIGH

V_VLOW

IBTD 1,2=-100␮A, Test Circuit 1,

V_CC-1.0 V_CC-0.7 V_CC

0 0.3 0.5

V

Tone disabled

Voltage Low

IBTD 1,2=15mA, Test Circuit 1,

Tone enabled

Note:-

1) The parameters Filter Amplifier V

related to Vcc.

, I

, Rectifier V

and Comparator Threshold Voltage are all directly (linearly)

OUT

OUT OUT

2) Applied via 1k resistors

3) These parameters are linear related to V_CC

PROVISIONAL ISSUE A - OCTOBER 2001

3

ZLNB2012

TEST CIRCUIT 1 (ZLNB2012 Pinout for QSOP16 package designator - Q16)

1

BTD2

TD2

BTD1

TD1

V1

5V

BHOR2

HOR2

ENA2

GND

BHOR1

HOR1

VCC

ENA1

FIN1

10nF

CF2

10nF

CF1

FIN2

VPOL2

VPOL1

RP2

1.0k

RP1

1.0k

V2

(See Note 1)

Note 1: V2 Characteristics

Tone Input (V2)

TD Outputs

Type:-

AC source

Frequency:- 22kHz

Voltage:-

300mVp/p Enabled

Zero Disabled

Switching Delays

PROVISIONAL ISSUE A - OCTOBER 2001

4

ZLNB2012

The following diagram shows a typical block diagram Additionally the front end bias requirements of the LNB

for a twin universal LNB design. The ZLNB2012 device are provided by the ZNBG4000 or ZNBG6000 offering a

provides the two polarity and two tone switches very efficient and cost effective solution

required to decode the two independent receiver

feeds. The device is also able to detect the absence of a

revceiver 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.

Control Input

<=13V-Horizontal

>=14.5V-Vertical

DC Input

13-25V

Horizontal Gain Stage

GaAs/HEMTFET

High Band

Antenna

+

High Band

Horizontal

3

1

Mixer

Low Band

Horizontal

H/V Output 1

+

Low Band

Diode

MUX

IF down feed

ASTRA

10.95 GHz-11.7 GHz

Standard Band

10.7 GHz-11.8 GHz

Enhanced Band

ZLNB2012 Series

Dual H/V Switch

&

950-1750 MHz

- Standard Band

950-2050 MHz

- Enhanced Band

Bias Generator

ZNBG40XX

Series

Control

22kHz Switch

High Band

+

High Band

Vertical

H/V Output 2

2

4

Mixer

Low Band

Vertical

Antenna

Gain Stage

GaAs/HEMTFET

+

Low Band

PROVISIONAL ISSUE A - OCTOBER 2001

5

ZLNB2012

APPLICATION CIRCUIT EXAMPLES

The following circuit shows the additional components that will be used for polarisation mode and 22kHz tone

detection in typical ZLNB2012 application (ZLNB2012 Pinout for QSOP16 package designator - Q16).

1

BTD2

TD2

BTD1

TD1

Vcc

BHOR2

HOR2

ENA2

GND

BHOR1

HOR1

VCC

ENA1

FIN1

10nF

CF2

10nF

CF1

FIN2

RP2

1.0k

RP1

1.0k

VPOL2

VPOL1

LNB Downfeed No.2

LNB Downfeed No.1

ORDERING INFORMATION

ZLNB2012 PINOUT FOR QSOP16

PACKAGE DESIGNATOR - Q16

Part Number

Package

QSOP16

Part Mark

ZLNB2012

ZLNB2012Q16

1

SAMPLE ORDERING INFORMATION

BTD2

BTD1

TD1

TD2

Part Number

Package

QSOP16

Part Mark

ZLNB2012

BHOR2

HOR2

ENA2

GND

BHOR1

HOR1

VCC

#ZLNB2012Q16

ENA1

FIN1

FIN2

VPOL2

VPOL1

PROVISIONAL ISSUE A - OCTOBER 2001

6

ZLNB2012

FURTHER INFORMATION

Inputs Vpol1 and Vpol2 are designed to be wired to the

power inputs of an LNB via a high value (1K) resistors.

Input Vpol1 controls outputs HOR1, BHOR1 and ENA1.

Input Vpol2 controls outputs HOR2, BHOR2 and ENA2.

With either input voltage set at or below 14V, the

corresponding HOR pin will be active and the

corresponding BHOR pin will be the inverse of HOR.

With either input voltage at 14.5V or higher, the

corresponding HOR pin will be active and the

corresponding BHOR pin will be the inverse. Should

the voltage applied to either Vpol input fall below 8V,

the corresponding ENA (enable) pin will be low,

otherwise these outputs will remain high. Any input or

output may be left open circuit without any effect on

the remaining circuitry.

The RC network components also serve two other

purposes. The resistor provides overvoltage

protection for the Vpol pin and the capacitor minimises

tone interference of the Vpol threshold. The upper

frequency roll-off of the op-amp has been set internally

at above 100kHz to allow the amplifier to be used with

other common tone switch frequencies.

The rectifier/smoother/comparitor function is provided

by a complex propriety circuit that allows the

ZLNB2012 to reliably detect wanted tones whilst

ignoring low frequency square wave switch box

signals, DiSEqC™ bursts and supply switching

transients common when using DiSEqC-2™ ready

set-top boxes. This is all achieved without the need for

any further external components. The threshold of the

comparitor is supply dependent, hence the gain of the

preceding op-amp must be adjusted in line with supply

voltage.

The ZLNB2012 includes all the circuitry necessary to

detect the presence of a 22kHz tone modulated on the

supply input to the LNB. The main elements of the

detector are an op-amp, a rectifier/smoother and a

comparitor. The op-amp has a pre-set internal

feedback resistor so that just a simple RC network

wired to the input gives user defined gain and low

frequency cut filter characteristics.

Output Truth Table

The ZLNB2012 includes two independent channels, each containing a voltage detector and tone detector. The

following truth table applies to each channel:-

Tone

Off

On

-

Vpol

р14V

у14.5V

р14V

у14.5V

<8V

TD

Low

High

-

BTD

High

Low

-

HOR

Low

High

Low

High

Low

BHOR

High

Low

ENA

High

Low

High

Low

High

PROVISIONAL ISSUE A - OCTOBER 2001

7

ZLNB2012

PACKAGE DIMENSIONS

QSOP16

DIM

Millimetres

Inches

MIN

4.80

MAX

4.98

MIN

0.189

MAX

0.196

A

B

C

D

E

F

0.635

0.23 REF

0.20

0.025 NOM

0.009 REF

0.30

3.99

1.75

0.25

6.20

8°

0.008

0.012

0.157

0.069

0.01

3.81

1.35

0.10

5.79

0°

0.15

0.053

0.004

0.228

0°

G

J

0.244

8°

K

Zetex plc

Fields New Road

Chadderton

Zetex GmbH

Streitfeldstraße 19

D-81673 München

Zetex Inc

700 Veterans Memorial Hwy

Hauppauge, NY11788

Zetex (Asia) Ltd

3701-04 Metroplaza, Tower 1

Hing Fong Road

Oldham, OL9 8NP

United Kingdom

Telephone (44) 161 622 4422

Fax: (44) 161 622 4420

Kwai Fong, Hong Kong

China

Telephone: (852) 26100 611

Fax: (852) 24250 494

Germany

Telefon: (49) 89 45 49 49 0

Fax: (49) 89 45 49 49 49

USA

Telephone: (631) 360 2222

Fax: (631) 360 8222

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

PROVISIONAL ISSUE A - OCTOBER 2001

8

型号:	ZLNB2012Q16
生命周期：	Active
零件包装代码：	SOIC
包装说明：	SSOP,
针数：	16
Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01
风险等级：	5.04
Is Samacsys：	N
模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	R-PDSO-G16
长度：	4.9 mm
功能数量：	1
端子数量：	16
最高工作温度：	85 °C
最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH
认证状态：	Not Qualified
座面最大高度：	1.75 mm
最大供电电压 (Vsup)：	8 V
最小供电电压 (Vsup)：	5 V
标称供电电压 (Vsup)：	5 V
表面贴装：	YES
温度等级：	INDUSTRIAL
端子形式：	GULL WING
端子节距：	0.635 mm
端子位置：	DUAL
宽度：	3.9116 mm
Base Number Matches：	1

电子百科

产品导航

产品型号ZLNB2012的Datasheet PDF文件预览

ZLNB2010Q20TC相关产品..

ZLNB2010Q20TC相关文章

IC37:专业IC行业平台