ZXFV201EV Diodes Zetex, ZXFV201EV Datasheet
ZXFV201EV
Manufacturer Part Number
ZXFV201EV
Description
BOARD EVAL FOR QUAD VIDEO AMP
Manufacturer
Diodes Zetex
Datasheet
1.ZXFV201EV.pdf
(4 pages)
Specifications of ZXFV201EV
Main Purpose
Video, Amplifier, Quad
Embedded
No
Utilized Ic / Part
ZXFV201
Primary Attributes
Current Feedback, 300MHz, 400V/us, ±5 V
Secondary Attributes
Gain of 1 or 2, 40mA Output
For Use With
ZXFV201EV - BOARD EVAL FOR QUAD VIDEO AMP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
TRIPLE AND QUAD CHANNEL VIDEO AMPLIFIER EVALUATION BOARD
Evaluation board description
The wide bandwidth of the ZXFV201/3 quad/triple
channel video amplifiers necessitates some care in the
layout of the printed circuit. For this reason Zetex has
made available an Evaluation Board.
The evaluation board layout serves as a useful
example for many applications, showing a practical
implementation of the advice given below.
Figures 1, 2, 3 and 4 show the schematic and copper
layout of a double-sided printed circuit board suitable
for evaluation of the device in the laboratory.
BNC connector sockets allow connection to test
instruments via 50 cables. The output circuit includes
a resistor matching circuit to present a load of 150 to
the amplifier (equivalent to a 75
video line) and simultaneously provide a 50
impedance.
The attenuation of this matching circuit is 15.45 dB. As
the amplifier is configured for a voltage gain of 2, the
overall gain is:
PCB design
A continuous ground plane is required under the
device (except around its inverting input) to provide
the shortest possible ground return paths for signals
and power supply filtering.
A double-sided or multi-layer PCB construction is
required, with plated-through via holes providing
closely spaced low-inductance connections from some
components to the continuous ground plane (some of
these holes are not visible in the figures for the
Evaluation Board - artworks and NC drill output can be
provided if required).
ISSUE 1 - MARCH 2004
6 - 15.45 = -9.45dB
back-terminated
output
1
Power supply filtering
For the power supply filtering, low inductance surface
mount capacitors are normally required. It has been
found that very good RF decoupling is provided on
each supply using a 1000pF NPO size 0805 or smaller
ceramic surface mount capacitor, closest to the device
pin, with an adjacent 0.1µF X7R capacitor. Other
configurations are possible and it may be found that a
single 0.01uF X7R capacitor 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 µF are recommended
particularly where the voltage regulators are located
more than a few inches from the device. These larger
capacitors are recommended to be solid tantalum
electrolytic or ceramic types.
A parts list is provided below.
Evaluation board parts list
NOTES:
(1)
(2)
(3)
QTY
1
Resistors, surface mount
3
6
3
3
3
2
2
-
1
8
1
Capacitors, surface mount
Integrated circuits
Miscellaneous
(1)
(1)
(1)
(1)
(1)
/4
/8
/4
/4
/4
Applies to ZXFV203EV only
Not present on ZXFV203EV
Applies to ZXFV201EV only
Cct Ref
R1
R12 R22
R2
R6 R7 R9
R10 R15
R16
R4
R11 R21
R13 R18
R19 R23
R14 R17
R20 R24
C1,C2
C3,C4
C5-C8
U1
J1-J8
J9
(2)
(2)
(2)
R5
R3
R8
(2)
(2)
(2)
Value
Printed circuit board ZDB189
51R
470R
130R
33R
24R
100nF
2.2µF
ZXFV201
Socket BNC, PCB square
flange
Terminal block, 3 way
Description
Resistor chip
Resistor chip
Resistor chip
Resistor chip
Resistor chip
Capacitor ceramic
chip X7R
Capacitor ceramic
chip X7R
NOT FITTED
(3)
ZXFV203EV
ZXFV201EV
/ZXFV203
S E M I C O N D U C T O R S
(1)
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ZXFV201EV Summary of contents
Page 1
... C3,C4 - C5-C8 Integrated circuits 1 U1 Miscellaneous 8 J1- NOTES: (1) Applies to ZXFV203EV only (2) Not present on ZXFV203EV (3) Applies to ZXFV201EV only 1 ZXFV203EV ZXFV201EV Value Description Printed circuit board ZDB189 51R Resistor chip 470R Resistor chip 130R Resistor chip 33R Resistor chip 24R Resistor chip 100nF ...
Page 2
... ZXFV203EV ZXFV201EV ISSUE 1 - MARCH 2004 ...
Page 3
... EVALUATION BOARD FOR TRIPLE & QUAD AMPLIFIERS Figure 2 Figure 3 ISSUE 1 - MARCH 2004 TOP VIEW OUT B OUT C ZXFV201E/ZXFV203EV silkscreen T OP VIEW ZXFV201EV/ZXFV203EV top copper 3 ZXFV203EV ZXFV201EV ZETEX ZDB189 ...
Page 4
... For the latest product information, log VIEW ZXFV201EV/ZXFV203EV bottom copper Asia Pacific Zetex (Asia) Ltd 3701-04 Metroplaza Tower 1 Hing Fong Road, Kwai Fong Hong Kong ...