ZXFV201, ZXFV202, ZXFV203, ZXFV204
Quad, single, triple and dual video amplifiers
Device description
The ZXFV201, ZXFV202, ZXFV203 and
ZXFV204 are quad, single, triple and dual,
respectively, high speed amplifiers designed
for video and other high speed applications.
Their low differential gain and phase
performance make them ideal for video
amplifier buffer applications.
The quad allows one IC to drive RGBS format
component video signals, while the triple
provides RGB component video buffer/driver.
The dual amplifier is a mainstay of the video
market providing two channels in the space of
1 single in SO8. The small size of the ZXFV202
in SOT23 allows it to be placed where needed
for position/size critical applications.
Together with high output drive and slew rate
capability, they bring high performance to
video applications.
Features
•
•
•
•
•
•
•
•
•
•
•
High speed
Gain of 1 - 3dB bandwidth 210MHz
Slew rate 380V/µs
Good video
25 MHz 0.1dB bandwidth
Differential gain 0.04%
Differential phase 0.04°
40mA output current @ 3V Output
Characterized up to 300pF load
±5 Volt supply operation
Supply current 7.5mA per amplifier
Applications
•
•
•
•
•
Industry standard pinouts
Video gain stages
CCTV buffer
Video distribution
RGB buffering
Home theater
High speed ADC signal input drive
Cable driving
Ordering information
Part number
ZXFV202E5TA
Descrip- Status
tion
Single
Active
Reel size
(inches)
7
7
7
7
13
7
13
7
13
Qty.
3,000
500
500
500
Part
mark
V202
V202
ZXFV202
ZXFV204
•
•
•
ZXFV202E5TD Single Obsolete
ZXFV202N8TA Single Obsolete
ZXFV204N8TA
ZXFV204N8TC
Dual
Dual
Obsolete
Active
Active
Application diagram
Y
+2
75
Back termination
C
+2
75
Co-ax
75
Co-ax
2,500 ZXFV204
500
ZXFV203
ZXFV203N14TA Triple
ZXFV203N14TC Triple Obsolete
ZXFV201N14TA Quad
ZXFV201N14TC Quad
LTB
Obsolete
2,500 ZXFV203
500
ZXFV201
2,500 ZXFV201
Dual amplifier S - video driver
Issue 5 - May 2007
© Zetex Semiconductors plc 2007
1
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ZXFV201, ZXFV202, ZXFV203, ZXFV204
Absolute maximum ratings over operating free-air temperature (unless
otherwise stated
(a)
)
Supply voltage (V
S+
to V
S-
)
Input voltage (V
IN-
, V
IN+
)
(b)
Differential input voltage (V
ID
)
Inverting input current (I
IN-
)
(c)
Output current (continuous, T
J
< 110°C)
Internal power dissipation
Storage temperature range
Operating ambient junction temperature (T
JMAX
)
-0.5V to +11V
V
S-
-0.5V to V
S+
+0.5 V
±3V
±5mA
±60mA
See power dissipation derating table
-65°C to +150°C
150°C
NOTES:
(a) Stresses above those listed under Absolute maximum ratings may cause permanent damage to the device. This is a
stress rating only; functional operation of the device at these or any other conditions above those indicated in the
operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.
(b) During power-up and power-down, these voltage ratings require that signals be applied only when the power supply
is connected.
(c) At high closed loop gains and low gain setting resistors care must be taken if large input signals are applied to the
device which cause the output stage to saturate for extended periods of time.
Power derating table
Package
SOT23-5
SO8
SO14
Theta-ja
195°C/W
168°C/W
120°C/W
Power rating at 25'C
0.64W
0.74W
1.04W
Recommended operating conditions
Parameter
V
S±
V
CMR
T
A
Dual supply voltage range
Common mode input voltage range
Ambient temperature range
Min.
±4.75
-3
-40
Max.
±5.25
+3
85
Unit
V
V
°C
Recommended resistor values
V
S±
= 5V, C
L
= 10pF
G
CL
1
R
F
680
820
1000
430
2
470
560
430
470
560
n/c
R
G
Peaking
2 dB
0
-2dB
2dB
1.5dB
0
Issue 5 - May 2007
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ZXFV201, ZXFV202, ZXFV203, ZXFV204
DC electrical characteristics (±5V power supplies, T
amb
= 25°C unless otherwise
stated. R
f
= 1k , R
L
= 150 , C
L
= 10pF)
Parameter
Supply voltage V+ operating range
Supply voltage V- operating range
Supply current/per channel
Input common mode voltage range
Input offset voltage
Output offset voltage
Input bias current, non-inverting input
Input resistance
Output voltage swing
Output drive current
Positive PSRR
Negative PSRR
I
OUT
= 40mA
V
IN
= 3V
V+ = ±0.25
V- = ±0.25
P
P
P
P
P
P
P
P
P
P
40
49
49
57
57
1.5
Conditions
Test
Min. Typ. Max.
4.75
-5.25
5.0
5
-5
7.5
3
1
2
5
2
3
10
20
10
6.5
5.25
-4.75
10
Unit
V
V
mA
V
mV
mV
A
M
V
mA
dB
dB
Test - P = production tested. C = characterized
AC electrical characteristics (±5V, R
f
= 470 , G = 2, C
L
= 10pF, T
A
= 25°C, unless
otherwise stated)
Parameter
BW
-3
BW
0.1
SR
Bandwidth, -3dB
Bandwidth, ±0.1dB
Slew Rate
Conditions
V
OUT
= 0.2V
PP
G = +2, R
F
= 470
V
OUT
= 0.2V
PP
G = +1, R
F
= 820
V
OUT
= 0.2V
PP
V
OUT
= 2V
PP
G = +2, R
F
= 470
V
OUT
= 2V
PP
G = +1, R
F
= 820
t
r
t
f
t
p
dG
dP
Rise time
Fall time
Propagation delay
V
OUT
= ±1V, 10% - 90%
V
OUT
= ±2V, 10% - 90%
Min
Typ
210
210
30
600
380
5.8
4.6
2.6
0.04
0.04°
%
ns
V/ s
MHz
MHz
Max
Unit
Differential phase, NTSC NTSC/PAL, 280mV
PP
,
Differential phase, NTSC DC = -1.428V to +1.428 V
Issue 5 - May 2007
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ZXFV201, ZXFV202, ZXFV203, ZXFV204
Applications information
A typical circuit application is shown in Figure 1. This is suitable for 75 transmission line
connections at both the input and the output and is useful for distribution of wide-band signals
such as video via cables. The 75 reverse terminating resistor R4 gives the correct matching
condition to a terminated video cable. The amplifier load is then 150 in parallel with the local
feedback network.
470
470
Figure 1
Typical video signal application circuit, gain = 2 (overall gain = 1 for 75
load
The wide bandwidth of this device necessitates some care in the layout of the printed circuit. 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 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.
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
0.1 F X7R capacitor. Other configurations are possible and it may be found that a single 0.01 F
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 F 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.
Note particularly that the inverting input of this current feedback type of amplifier is sensitive to
small amounts of capacitance to ground which occur as part of the practical circuit board layout.
This capacitance affects bandwidth, frequency response peaking and pulse overshoot. Therefore
to minimize this capacitance, the feedback components R2 and R3 of Figure 1 should be
positioned as close as possible to the inverting input connection.
Issue 5 - May 2007
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ZXFV201, ZXFV202, ZXFV203, ZXFV204
The frequency response and pulse response will vary according to particular values of resistors
and layout capacitance. The response can be tailored for the application to some extent by choice
of the value of feedback resistor. Figures 2 and 3 show the small signal unity gain and gain of 2
frequency responses.
3
R
F
= 680Ω
0
Gain (dB)
R
F
= 820Ω
R
F
= 1kΩ
V
IN
= 200mV
PP
T
A
= 25
°
V
S±
=
±
5V
G
=
1
R
L
=
150Ω
C
L
=
10pF
-3
-6
1
10
Frequency (MHz)
100
1000
Figure 2
Unity gain small signal bandwidth
9
R
F
= 430Ω
6
Gain (dB)
R
F
= 560Ω
R
F
= 470Ω
3
V
IN
= 200mV
PP
T
A
= 25
°
V
S±
=
±
5V
G
=
2
R
L
=
150Ω
C
L
=
10pF
0
1
Figure 3
10
100
Frequency (MHz)
1000
Gain of 2 small signal bandwidth
Issue 5 - May 2007
© Zetex Semiconductors plc 2007
5
www.zetex.com
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