ZXFV302N16TA [ZETEX]
4:1 HIGH SPEED MULTIPLEXER; 4 : 1高速多路复用器型号: | ZXFV302N16TA |
厂家: | ZETEX SEMICONDUCTORS |
描述: | 4:1 HIGH SPEED MULTIPLEXER |
文件: | 总12页 (文件大小:272K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
ZXFV302
4:1 HIGH SPEED MULTIPLEXER
DEVICE DESCRIPTION
FEATURES AND BENEFITS
The ZXFV302 is a 4:1 high speed analog switch
designed for use as a buffered video m ultiplexer and
other high-speed applications.
•
•
•
•
•
•
•
•
•
3dB Bandwidth 300MHz
Slew rate 450V/ s
Differential gain 0.01%
Differential phase 0.04Њ
Output current 40m A
Stable up to 100pF load
Ϯ5 Volt supply
It features low different gain and phase distortion. The
high speed high output current capability provides 75⍀
ca b le d rive fo r u s e in h ig h p e rfo rm a n ce vid e o
applications.
The input channel is selected by m eans of two logic
lines using an internal decoder. An output enable line
allows expansion to eight channels using two devices
ZXFV302 as shown in the exam ple application figure 1.
Supply current 17m A
16 pin SO package
APPLICATIONS
An alternative device, ZXFV301 provides the sam e
functionality and pin-out as the ZXFV302 but with four
separate logic lines controlling the switch channels
directly.
•
•
•
•
•
•
Video routing and switching
CCTV switching
Video distribution selection
RGB m ultiplexing
Connection Diagram
High frequency instrum entation Data acquisition
Data acquisition
1
2
3
4
5
6
7
8
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
IN 1
V+
O U T
0 V
0 V
IN 2
0 V
IN3
0 V
E N
A 0
A 1
IN 4
V-
N C
N C
Z X FV3 0 2
Ordering inform ation
Pa rt Nu m b e r
ZXFV302N16TA
ZXFV302N16TC
Co n t a in e r
In cre m e n t
500
Re e l 7″
2500
Re e l 13″
Fig.1:Typical Application for 8 channel CCTV
ISSUE 4 - NOVEMBER 2002
1
ZXFV302
ABSOLUTE MAXIMUM RATINGS
Supply voltage V
-0.5V to +6V
-6V to +0.5V
CC
Supply voltage V
EE
Analog inputs to ground
Digital inputs to ground
Outputs to ground*
V
-0.5V to V +0.5V
EE CC
-0.5V to V +0.5V
V
EE
CC
-0.5V to VCC +0.5V
Output current, m ax continous
40m A
Operating Am bient Tem perature Range
-40ЊC to 85ЊC Storage -65ЊC to 150ЊC
150ЊC**
Operating J unction tem perature T
J MAX
**The therm al resistance from the sem iconductor die to am bient is typically 120ЊC/W when the SO16 package is
m ounted on a PCB in free air. The power dissipation of the device when loaded m ust be designed to keep the
device junction tem perature below T
.
J MAX
*During power-up and power-down, these voltage ratings require an appropriate sequence of applying and
rem oving signals and power supplies.
ELECTRICAL CHARACTERISTICS
Ϯ5V power supplies, Tam b = 25ЊC unless otherwise stated. RL = 150⍀, CL = 10pF
Characteristics apply to channel selected, and EN input HIGH unless otherwise stated
Test level:
P = 100% production test
C = characterised only
PARAMETER
CONDITIONS
TES T
MIN
4.75
-5.25
13
TYP
5
MAX UNIT
S u p p ly Vo lta g e V+
S u p p ly Vo lta g e V-
Po s itive s u p p ly cu rre n t
Ne g a tive s u p p ly cu rre n t
Vo lta g e g a in DC
5.25
-4.75
21
V
V
-5
P
P
P
P
P
P
P
P
P
C
P
P
P
C
C
C
C
C
C
17
m A
m A
V/V
V
9
13
18
0.99
1.000
Ϯ3
45
1.01
In p u t Co m m o n m o d e Vo lta g e
In p u t re s is ta n ce
k⍀
m V
A
V
Ou tp u t o ffs e t Vo lta g e
In p u t b ia s cu rre n t
Ou tp u t Vo lta g e s w in g
Ou tp u t d rive cu rre n t
Ou tp u t re s is ta n ce
All ch a n n e ls h e ld a t 0V
-10
-25
+11
-11
Ϯ3
+30
+5
Active ch a n n e ls h e ld a t 0V
40
m A
⍀
1
Ou tp u t re s is ta n ce
Dis a b le d (EN lo w )
1.5
40
30
3
4.5
M⍀
dB
dB
MHz
V/s
V
Po s itive PS RR
54
Ne g a tive PS RR
51
1
S m a ll s ig n a l b a n d w id th
300
450
S le w ra te , 25% to 75%
2V p k-p k
Lo g ic in p u t HIGH V
2
Hm in
Lo g ic in p u t LOW V
0.8
V
Lm a x
Lo g ic in p u t cu rre n t I
lo g ic in p u t vo lta g e = 5V
lo g ic in p u t vo lta g e = 0V
5
pA
A
INHIGH
INLOW
Lo g ic in p u t cu rre n t I
-70
ISSUE 4 - NOVEMBER 2002
2
ZXFV302
ELECTRICAL CHARACTERISTICS
Ϯ5V power supplies, T
= 25ЊC unless otherwise stated. R = 150⍀, C = 10pF
L L
am b
Characteristics apply to channel selected, and EN input HIGH unless otherwise stated
Test level:P = 100% production test
C = characterised only
PARAMETER
CONDITIONS
TES T
MIN
TYP
MAX UNIT
t
t
t
t
Vo u t = Ϯ2V, s e e tim in g d ia g ra m
Vo u t = Ϯ2V, s e e tim in g d ia g ra m
Vo u t = Ϯ2V, s e e tim in g d ia g ra m
Vo u t = Ϯ2V, s e e tim in g d ia g ra m
10MHz, 0d Bm in
C
C
C
C
C
C
C
C
35
10
ns
ns
ON
OFF
LOW
HIGH
50
ns
40
ns
1
Cro s s -ta lk, a ll h o s tile
Diffe re n tia l Ga in
75
dB
%
0.01
0.04
50
Diffe re n tia l Ph a s e
deg
m V
S w itch in g tra n s ie n ts ,
m a g n itu d e
All ch a n n e ls h e ld a t 0V
All ch a n n e ls h e ld a t 0V
S w itch in g tra n s ie n ts ,
d u ra tio n
C
25
ns
Notes:
1. Bandwidth and cross talk m easured using Zetex Evaluation Circuit Board detailed later in this datasheet.
Truth table for selection of input channel
A1
X
0
A0
X
0
EN
0
OUT
Hi Z
IN 1
IN 2
IN 3
IN 4
1
0
1
1
1
0
1
1
1
1
Fig.2: TIMING DIAGRAM
Notes: The ‘select’ waveform represents a change in the the 2 bit control word A0 and A1.
HIGH is equivalent to tLOW but , applies for a positive going transition of OUT.
t
ISSUE 4 - NOVEMBER 2002
3
ZXFV302
CHARACTERISTICS
ISSUE 4 - NOVEMBER 2002
4
ZXFV302
APPLICATIONS INFORMATION
BNC connector sockets allow connection to test
instrum ents via 50⍀ cables. The output circuit includes
a resistor m atching circuit to present a load of 150⍀ to
the device and sim ultaneously provide 50⍀ output
im pedance. The attenuation of this m atching circuit is
15.45 dB. As the device has unity voltage gain, the
overall loss when loaded by 75⍀ is also 15.45 dB.
Introduction
A typical circuit application is outlined in Figure 1,
above, where two devices are com bined to provide
8-to-1 m ultiplexing. A m ore detailed basic application
circuit for 4 dc-coupled channels is given in Figure 3,
and an AC coupled circuit for 8 channels is shown in
Fig u re 4. Th e s e circu its a re s u ita b le fo r 75⍀
transm ission line connections at both the input and the
output and are useful for distribution of wide-band
signals such as video via cables. The 75⍀ reverse
term inating resistor at the output gives the correct
m atching condition to a term inated video cable. The
am plifier load is then 150⍀.
EVALUATION CIRCUIT PARTS LIST:
QTY CCT-REF
VALUE DES CRIPTION
Re s is t o rs , s u rfa ce m o u n t
4
4
1
1
1
5
R1,R2,R3,R4
R5,R6,R7,R8
R9
51R
22k
0805
0805
0805
0805
0805
0805
The wide bandwidth of this device necessitates som e
care in the layout of the printed circuit. Partly for this
reason, an Evaluation Circuit board is available and is
described in a later paragraph. A continuous ground
plane is required under the device and its signal
connection paths, to provide the shortest possible
ground return paths for signals and power supply
filt e r in g . A d o u b le -s id e d o r m u lt i-la y e r P CB
construction is required, with plated-through via holes
providing closely spaced low-inductance connections
from som e com ponents to the continuous ground
plane (som e of these holes are not visible in the figures
for the Evaluation Circuit Board – artworks and NC drill
output can be provided if required).
120R
62R
10R
47k
R10
R11
R12 to R16
Ca p a cit o rs , s u rfa ce m o u n t
6
100nF 25V ce ra m ic 0805
X7R
2
1nF
50V ce ra m ic 0805
NPO
For the power supply filtering, low inductance surface
m ount capacitors are norm ally required. It has been
found that very good RF decoupling is provided on
each supply using a 1000 pF NPO size 0805 ceram ic
surface m ount capacitor, closest to the device pin, with
an adjacent 0.1 F X7R capacitor. Other configurations
are possible and it m ay be found that a single 0.01 F or
0.1 F X7R capacitor, size 0805 or sm aller, on each
supply gives good results. However this should be
supported by larger decoupling capacitors elsewhere
on the printed circuit board. Values of 1 to 10 F are
re co m m e n d e d , p a rticu la rly w h e re th e vo lta g e
regulators are located m ore than a few inches from the
device. These larger capacitors are recom m ended to
be solid tantalum electrolytic or ceram ic types.
2
10F
16V Ta n t Ele c s ize
C
In t e g ra t e d Circu it s
1
U1
ᎏ
ᎏ
Ze te x ZXF 301N16
o r ZXFV302N16
Mis ce lla n e o u s
5
BNC S o cke t, PCB
s tra ig h t fla n g e ,
e .g . Tyco
B35N14H999X99
1
ᎏ
3-w a y PCB s cre w
te rm in a l b lo ck IMO
20.501/3S B
Evaluation Circuit
An evaluation circuit is available, constructed on a
double-side printed circuit board. The circuit is suitable
for both the ZXFV301 and ZXFV302 and either device
m ay be fitted. Figures 5 and 6 show the circuit diagram ,
and the layout of com ponents and copper. A parts list
is provided below. This layout serves as a useful
exam ple for m any applications, showing the practical
im plem entation of the advice given above in the
Introduction.
1
S W1
ᎏ
ᎏ
DIL s w itch , 8 w a y
10 TP1 to TP10
PCB te s t te rm in a l,
re d , W.Hu g h e s
100-107
ISSUE 4 - NOVEMBER 2002
5
Figure 3: BASIC APPLICATION CIRCUIT, 4 CHANNEL DC COUPLED, DUAL SUPPLIES
Figure 4: CCTV CIRCUIT WITH 8 CAMERA FROM SINGLE SUPPLY
ZXFV302
Figure 5: EVALUATION CIRCUIT & PRINTED BOARD LAYOUT
SHOWING TOP COPPER (overall dim ensions 4x3 inches)
ISSUE 4 - NOVEMBER 2002
8
ZXFV302
Figure 6: EVALUATION CIRCUIT BOARD BOTTOM COPPER
(viewed through from top)
ISSUE 4 - NOVEMBER 2002
9
ZXFV302
Notes
ISSUE 4 - NOVEMBER 2002
10
ZXFV302
Notes
ISSUE 4 - NOVEMBER 2002
11
ZXFV302
PACKAGE OUTLINE
DIM
Millim e tre s
In ch e s
MIN
MIN
MAX
10.00
MAX
0.394
A
B
C
D
E
F
G
H
I
9.80
0.386
0.05 BS C
0.02 REF
0.013
0.15
1.27 BS C
0.53 REF
0.33
0.51
4.00
1.75
0.25
8°
0.020
0.157
0.069
0.01
8°
3.80
1.35
0.053
0.004
0°
0.10
0°
0.40
1.27
6.20
0.016
0.228
0.05
0.244
J
5.80
Conform s to J EDEC MS-012AC Iss C (SO16N)
© Zetex plc 2002
Europe
Am ericas
Asia Pacific
Zetex plc
Zetex Gm bH
Zetex Inc
Zetex (Asia) Ltd
Fields New Road
Chadderton
Streitfeldstraß e 19
D-81673 München
700 Veterans Mem orial Hwy
Hauppauge, NY11788
3701-04 Metroplaza, Tower 1
Hing Fong Road
Oldham , OL9 8NP
United Kingdom
Telephone (44) 161 622 4422
Fax: (44) 161 622 4420
uk.sales@zetex.com
Kwai Fong
Hong Kong
Telephone: (852) 26100 611
Fax: (852) 24250 494
asia.sales@zetex.com
Germ any
USA
Telefon: (49) 89 45 49 49 0
Fax: (49) 89 45 49 49 49
europe.sales@zetex.com
Telephone: (631) 360 2222
Fax: (631) 360 8222
usa.sales@zetex.com
These offices are supported by agents and distributors in m ajor countries world-wide.
This publication is issued to provide outline inform ation only which (unless agreed by the Com pany in writing) m ay 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 Com pany reserves the right to alter without notice the specification, design, price or conditions of supply of any product or
service.
For the latest product inform ation, log on to
w w w .zetex.com
ISSUE 4 - NOVEMBER 2002
12
相关型号:
©2020 ICPDF网 联系我们和版权申明