參數(shù)資料
型號(hào): ZNBG3116Q20(1)
廠商: Zetex Semiconductor
文件頁(yè)數(shù): 11/14頁(yè)
文件大?。?/td> 1845K
代理商: ZNBG3116Q20(1)
ZNBG3115
ZNBG3116
ISSUE 1 - JUNE 2001
11
ZNBG3115/16
Regulator
Single Universal LNB Block Diagram
ThefollowingblockdiagramshowsthemainsectionofanLNBdesignedforusewiththeAstraseriesofsatellites.
The ZNBG3115/16 is the core bias and control element of this circuit. The ZNBG provides the negative rail, FET
bias control, polarisation switch control, tone detection and band switching with the minimum of external
components. Compared to other discrete component solutions the ZNBG circuit reduces component count and
overall size required.
APPLICATIONS INFORMATION(cont)
Tone detection and band switching is provided on the ZNBG3115/16 devices. The following diagrams describes
how this feature operates in an LNB and the external components required. The presence or absence of a 22kHz
toneappliedtopinF
enablesoneoftwooutputs,L
andH
.AtonepresentenablesH
andtoneabsentenables
L
. The L
and H
outputs are designed to be compatible with both MMIC and discrete (bipolar or FET) local
oscillator applications, selected by pin L
. Referring to Figure 1 wiring pin L
to ground will force L
and H
to
switchbetween-2.6V(disabled)and0V(enabled).ReferringtoFigures2and3 wiringpinL
toapositivevoltage
source (e.g. a potential divider across V
and ground set to the required oscillator supply voltage, V
) will
forcetheL
B
andH
B
outputstoprovidetherequiredoscillatorsupply,V
OSC
,whenenabledand0Vwhendisabled.
Tone Detection Function
L
OV
F
IN
L
B
H
B
L
B
H
B
G
ND
22kHz
Disabled
Enabled
-3 volts
G
ND
Enabled
Disabled
G
ND
-3 volts
V
OSC
22kHz
Disabled
Enabled
Note 1
V
OSC
Enabled
Disabled
V
OSC
Note 1
Note 1:
0 volts in typical LNB applications but ependent on extenal circuits.
相關(guān)PDF資料
PDF描述
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
ZNBG3116 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
ZNBG3211 TV 30C 30MIX SKT WALL RECP
ZNBG3211Q20 Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVP00; No. of Contacts:24; Connector Shell Size:25; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight
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