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參數(shù)資料
| 型號(hào)： | ZNBG3116Q16 |
| 廠商： | ZETEX PLC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVP00; No. of Contacts:42; Connector Shell Size:25; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封裝： | MO-137AB, QSOP-16 |
| 文件頁(yè)數(shù)： | 9/14頁(yè) |
| 文件大小： | 1845K |
| 代理商： | ZNBG3116Q16 |
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ZNBG3115
ZNBG3116
ISSUE 1 - JUNE 2001
9
For many LNB applications, tone detection for band switching is required. The ZNBG3115/16 includes all the
circuitry necessary to detect the presence of a 22kHz tone modulated on the supply input to the LNB. The main
elementsofthe detectorareanop-amp,arectifier/smootherandacomparitor.Theop-amphasapre-setinternal
feedback resistor so that just a simple RC network wired to the input gives user defined gain and low frequency
cut filter characteristics. 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
ZNBG3115/16 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. See the table
below for recommended values for 22kHz detection, given for a range of supplies.
Table_1
Filter
Components
Supply Voltage (Vcc)
5V
4.7nF
2k
6V
4.7nF
1.8k
7V
4.7nF
1.5k
8V
10nF
1.3k
9V
10nF
1.1k
10V
10nF
1.0k
Cf
Rvpol (R2)
Note: Optimised for F(tone) = 22kHz.
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| ZNBG3116Q20(1) | |
| ZNBG3115Q16 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVP00; No. of Contacts:42; Connector Shell Size:25; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
| ZNBG3115Q20 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVP00; Number of Contacts:42; Connector Shell Size:25; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ZNBG3116Q16(1) | 制造商:ZETEX 制造商全稱:ZETEX 功能描述: |
| ZNBG3116Q20 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION |
| ZNBG3116Q20(1) | 制造商:ZETEX 制造商全稱:ZETEX 功能描述: |
| ZNBG3118 | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:LNA GaAs FET BIAS CONTROLLER WITH POLARIZATION AND BAND SELECT |
| ZNBG3118JA16TC | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) LNA GaAs FET BIAS Polarized Band CNTRL RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
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