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参数资料
| 型号： | ZLNB2012Q16TC |
| 厂商： | Diodes Inc |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | MUX DUAL DUAL H/V TONE SW 16QSOP |
| 标准包装： | 2,500 |
| 功能： | 多路控制器 |
| RF 型： | LNB，DiSEqC?，STBs |
| 次要属性： | 带双音和极性开关 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
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 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
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.
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
Off
On
On
-
Vpol
14V
14.5V
14V
14.5V
<8V
TD
Low
Low
High
High
-
BTD
High
High
Low
Low
-
HOR
Low
High
Low
High
Low
BHOR
High
Low
High
Low
High
ENA
High
High
High
High
Low
PROVISIONAL ISSUE A - OCTOBER 2001
7
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相关代理商/技术参数 |
参数描述 |
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| ZLNB2013 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:DUAL TONE AND POLARITY SWITCH LNB MULTIPLEX CONTROLLER |
| ZLNB2013Q16 | 制造商:ZETEX 制造商全称:ZETEX 功能描述:DUAL TONE AND POLARITY SWITCH LNB MULTIPLEX CONTROLLER |
| ZLNB2013Q16TC | 功能描述:编码器、解码器、复用器和解复用器 DUAL H/V TONE SWITCH MUX CONTROLLER RoHS:否 制造商:Micrel 产品:Multiplexers 逻辑系列:CMOS 位数: 线路数量（输入/输出）:2 / 12 传播延迟时间:350 ps, 400 ps 电源电压-最大:2.625 V, 3.6 V 电源电压-最小:2.375 V, 3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-44 封装:Tray |
| ZLNB2015 | 制造商:DIODES 制造商全称:Diodes Incorporated 功能描述:ADVANCED DBS DUAL CHANNEL VOLTAGE AND TONE DETECTOR |
| ZLNB2015JA16TC | 功能描述:开关变换器、稳压器与控制器 ADV DBS Dual CH 22kHz Tone Detection RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
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