ELANTEC EL4393

EL4393C
EL4393C
Triple 80 MHz Video Amplifier w/Disable
Features
General Description
# 80 MHz b 3 dB bandwidth for
gains of 1 to 10
# 900 V/ms slew rate
# 10 MHz bandwidth flat to 0.1 dB
# Excellent differential gain and
phase
# TTL/CMOS compatible
# Available in SOL-16
The EL4393C is three wideband current-feedback amplifiers optimized for video performance. Each amplifier can drive a load
of 150X at video levels. Each amplifier has a disable capability,
which is controlled by a TTL/CMOS compatible logic signal.
The EL4393C operates on supplies as low as g 4V up to g 15V.
Applications
#
#
#
#
#
#
RGB drivers
RGB multiplexers
RGB gain blocks
Video gain blocks
Coax cable driver
ADC drivers/input multiplexer
Being a current-feedback design, the bandwidth stays relatively
constant at approximately 80 MHz over the g 1 to g 10 gain
range. The EL4393C has been optimized for use with 1300X
feedback resistors at a gain of 2.
When the outputs are disabled, the supply current consumption
drops, by about 4 mA per channel that is disabled. This feature
can be used to reduce power dissipation.
Connection Diagram
Ordering Information
Part No.
Temp. Range
Package
OutlineÝ
EL4393CN b 40§ C to a 85§ C 16-Lead P-DIP MDP0031
EL4393CM b 40§ C to a 85§ C 16-Lead SOL
MDP0027
4393 – 1
January 1996 Rev B
Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a ‘‘controlled document’’. Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
© 1993 Elantec, Inc.
EL4393C
Triple 80 MHz Video Amplifier w/Disable
Absolute Maximum Ratings (TA e 25§ C)
Voltage between VS a and VSb
Voltage at VS a
Voltage at VSb
Voltage between VIN a and VINb
Current into VIN a or VINb
Internal Power Dissipation
Operating Ambient Temperature Range
Operating Junction Temperature
Storage Temperature Range
a 33V
a 18V
b 18V
g 6V
See Curves
b 40§ C to a 85§ C
150§ C
b 65§ C to a 150§ C
5 mA
Important Note:
All parameters having Min/Max specifications are guaranteed. The Test Level column indicates the specific device testing actually
performed during production and Quality inspection. Elantec performs most electrical tests using modern high-speed automatic test
equipment, specifically the LTX77 Series system. Unless otherwise noted, all tests are pulsed tests, therefore TJ e TC e TA.
Test Level
I
II
III
IV
V
Test Procedure
100% production tested and QA sample tested per QA test plan QCX0002.
100% production tested at TA e 25§ C and QA sample tested at TA e 25§ C ,
TMAX and TMIN per QA test plan QCX0002.
QA sample tested per QA test plan QCX0002.
Parameter is guaranteed (but not tested) by Design and Characterization Data.
Parameter is typical value at TA e 25§ C for information purposes only.
Parameter
Description
Temp
Min
a 25§ C
Typ
Max
Test
Level
Units
2
g 15
I
mV
VOS
Input Offset Voltage
TCVOS
Temperature Coefficient of VOS
Full
50
V
mV/§ C
IB a
IIN a Input Bias Current
a 25§ C
0.2
5
I
mA
IBb
IINb Input Bias Current
a 25§ C
10
65
I
mA
Full
25
V
nA/§ C
58
I
dB
I
mA/V
I
dB
I
mA/V
TCIB
b
Temperature Coefficient of IB
b
CMRR
Common-Mode Rejection Ratio
(Note 1)
a 25§ C
b ICMR
IINb Input Common-Mode Current
(Note 1)
a 25§ C
PSRR
Power Supply Rejection Ratio
(Note 2)
a 25§ C
b IPSR
IINb Current Supply Rejection
(Note 2)
a 25§ C
ROL
Transimpedance
a 25§ C
RIN
IN a Input Impedance
a 25§ C
VIN
IN a Input Range
a 25§ C
VO
Output Voltage Swing;
RL e 1 kX
a 25§ C
2
50
3
50
58
2
100
8
5
217
I
kX
2
I
MX
g 13
g 13.5
I
V
g 12
g 13
I
V
TD is 3.4in
Open Loop DC Electrical Characteristics Supplies at g 15V, Load e 1 KX
EL4393C
Triple 80 MHz Video Amplifier w/Disable
Parameter
Description
Temp
Min
Typ
40
70
ISC
Short-Circuit Current (Note 3)
a 25§ C
IO, DIS
Output Current when Disabled
a 25§ C
DIS VIL
Disable Voltage for Logic Low
a 25§ C
DIS VIH
Disable Voltage for Logic High
a 25§ C
DIS IIL
Disable Logic Low Input Current
a 25§ C
3
DIS IIH
Disable Logic High Input Current
a 25§ C
ICC (en)
Positive Supply Current all
Channels Enabled
a 25§ C
ICC (dis)
Positive Supply Current all
Channels Disabled
IEE (en)
IEE (dis)
5
Max
Test
Level
Units
I
mA
150
I
mA
0.8
I
V
2.2
I
V
25
I
mA
0
5
I
mA
15
20
g 29
I
mA
a 25§ C
6
11
16
I
mA
Negative Supply Current all
Channels Enabled
a 25§ C
13
18
g 28
I
mA
Negative Supply Current all
Channels Disabled
a 25§ C
4
9
14
I
mA
TD is 2.7in
Open Loop DC Electrical Characteristics Supplies at g 15V, Load e 1KX Ð Contd.
Note 1: VCM e g 10V for VS e g 15V.
Note 2: VOS is measured at VS e g 4.5V and VS e g 16V, both supplies are changed simultaneously.
Note 3: Only one output short circuited. Pulse test or use heatsink.
Closed Loop AC Electrical Characteristics Supplies at g 15V, Load e 150X and 15 pF, except
where noted. Rf1 and Rf2 e 1500X; AV e 2, TA e 25§ C. (See note 8 re: test fixture)
Description
Min
Typ
Max
Test
Level
Units
SR
Slew Rate (Note 4)
960
V
V/ms
SR
Slew Rate w/ g 5V Supplies (Note 5)
470
IV
V/ms
ts
Settling Time to 1% 5Vp-p 5V Step (Note 6)
32
V
ns
BW
Bandwidth, b3 dB
g 5V Supplies, b 3 dB
80
60
IV
IV
MHz
MHz
BW
Bandwidth, b0.1 dB
g 5V Supplies, b 0.1 dB
16
21
IV
IV
MHz
MHz
Peaking
b 3 dB BW Tests
0.6
IV
dB
dG
Differential Gain at 3.58 MHz
at g 5V Supplies (Note 7)
0.03
0.30
V
V
%
%
di
Differential Phase at 3.58 MHz
at g 5V Supplies (Note 7)
0.088
0.096
V
V
(§ )
(§ )
Note
Note
Note
Note
Note
4: RL e 300X, b5V to a 5V swing, SR measured at 20% to 80%.
5: b2V to a 2V swing, SR measured at 20% to 80%.
6: RL e 300X.
7: DC offset from b0.7V through a 0.7V AC amplitude is 286 mVP-P, equivalent to 40 ire.
8: Test fixture was designed to minimize capacitance at the IN a input. A ‘‘good’’ fixture should have less than 2 pF of stray
capacitance to ground at this very sensitive pin. See application notes for further details.
3
TD is 2.4in
Parameter
EL4393C
Triple 80 MHz Video Amplifier w/Disable
Typical Performance Curves
Gain Flatness vs Rf at g 5V
Gain Flatness vs Rf at g 15V
Phase vs Rf at g 5V
Phase vs Rf at g 15V
Gain of 5, 10 vs Various Rf,
Rg at g 5V
Gain of 5, 10 vs Rf,
Rg at g 15V
4393 – 3
4
EL4393C
Triple 80 MHz Video Amplifier w/Disable
Typical Performance Curves Ð Contd.
Disabled
Isolation Test at g 5V
Disabled
Isolation Test at g 15V
CinÐvs Peaking
Voltage Noise
Differential Gain & Phase
at 3.58 MHz
EL4393 MUX Channel
Channel Isolation
4393 – 11
5
EL4393C
Triple 80 MHz Video Amplifier w/Disable
Typical Performance Curves Ð Contd.
Supply Current
vs Supply Voltage
Maximum Power Dissipation
vs Ambient TemperatureÐ
16-Pin PDIP
Maximum Power Dissipation
vs Ambient TemperatureÐ
16-Pin SOL
4393 – 4
Small Signal Pulse Response
Large Signal Pulse Response
4393 – 5
4393 – 6
Enable/Disable
with a VE Voltage Output
Enable/Disable
with b VE Voltage Output
4393 – 7
4393 – 8
6
EL4393C
Triple 80 MHz Video Amplifier w/Disable
It is recommended that the VCC and VEE pins
each be decoupled by a 0.1 mF NPO or X7R dielectric ceramic capacitors to ground within 0.1
inch of the part, and in parallel with the 0.1 mF,
A 47 mF tantalum capacitor, also to ground. The
47 mF capacitors should be within 0.25 inch of
their power pins. The ground plane should be underneath the package, but cut away from the
In b inputs. Care should be taken with the center
channel feedbackÐit must be kept away from
any of the in a or in b pins, if it has to go under
the package. Route the G-out line between the
pin 3 ground and the pin 4 In b if going under
the package is essential. Otherwise, loop the Gout trace around all the other circuitry, to its Rf
resistor. The Rf and if used, Rg resistors should
be on the input side of the package, to minimize
trace length on the In b pins.
Typical Application for EL4393,
and General Rules for PCB
Layout
The figure shows two EL4393’s configured as a
2:1 RGB multiplexer, and cable driver, driving
75X, back terminated cables. Each channel of the
EL4393 is configured to give a gain of two, to
make up for the losses of the back terminating
resistor.
In this example, the Disable pins of each RGB
section are driven by a complementary TTL ‘‘select’’ signal. Larger multiplexers can be assembled, with a 1-of-n TTL decoder selecting each
RGB triplet.
The circuit gives channel isolations of typically
better than b 50 dB at 10 MHz, and with a 20
dB/decade slope, extending down to better than
b 90 dB at frequencies below 100 kHz.
The digital input disables are on the output side
of the package, so that a good ground plane down
the center of the board underneath the package
will isolate any fast edges from the sensitive inputs.
The schematic does not show things like power
supply decoupling, or pcb layout, grounding and
signal returns, but these will all affect the overall
performance of the circuit, and care should be
taken with these aspects.
7
EL4393C
Triple 80 MHz Video Amplifier w/Disable
4393 – 2
Typical Application Circuit
8
EL4393C
EL4393C Macromodel
* Output Stage
*
q1 4 18 19 qp
q2 7 18 20 qn
q3 7 19 21 qn
q4 4 20 22 qp
r7 21 6 4
r8 22 6 4
ios1 7 19 2.5 mA
ios2 20 4 2.5 mA
*
* Error Terms
*
ivos 0 23 2 mA
vxx 23 0 0V
e4 24 0 3 0 1.0
e5 25 0 7 0 1.0
e6 26 0 4 0 1.0
r9 24 23 1K
r10 25 23 1K
r11 26 33 1K
*
* Models
*
.model qn npn (is e 5eb15 bf e 100 tf e 0.2nS)
.model qp pnp (is e 5eb15 bf e 100 tf e 0.2nS)
.model dclamp d (is e 1eb30 ibv e 0.266 bv e 1.5 n e 4)
.ends
TD is 5.3in
* Revision A, July 1993
* Enhancements include PSRR, CMRR, and Slew Rate Limiting
a input
* Connections:
b Input
*
l
a Vsupply
*
l
l
b Vsupply
*
l
l
l
Putput
*
l
l
l
l
*
l
l
l
l
l
* subckt EL4393/EL 3
2
7
4
6
*
* Input Stage
*
e1 10 0 3 0 1.0
vis 10 9 0V
h2 9 12 vxx 1.0
r1 2 11 50
l 1 11 12 29 nH
iinp 3 0 0.2 mA
iinm 2 0 10 mA
*
* Slew Rate Limiting
*
h1 13 0 vis 600
r2 13 14 1K
d1 14 0 dclamp
d2 0 14 dclamp
*
* High Frequency Pole
*
e2 30 0 14 0 0.00166666666
l5 30 17 1.2 mH
c5 17 0 1 pF
r5 17 0 500
*
* Transimpedance Stage
*
g1 0 18 17 0 1.0
rol 18 0 250k
cdp 18 0 2.2 pF
*
TD is 3.6in
TAB WIDE
Triple 80 MHz Video Amplifier w/Disable
9
EL4393C
Triple 80 MHz Video Amplifier w/Disable
EL4393C Macromodel Ð Contd.
4393 – 9
4393 – 10
Simplified Schematic of One Channel of EL4393
10
11
BLANK
EL4393C
EL4393C
Triple 80 MHz Video Amplifier w/Disable
General Disclaimer
Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes
in the circuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any
circuits described herein and makes no representations that they are free from patent infringement.
January 1996 Rev B
WARNING Ð Life Support Policy
Elantec, Inc. products are not authorized for and should not be
used within Life Support Systems without the specific written
consent of Elantec, Inc. Life Support systems are equipment intended to support or sustain life and whose failure to perform
when properly used in accordance with instructions provided can
be reasonably expected to result in significant personal injury or
death. Users contemplating application of Elantec, Inc. products
in Life Support Systems are requested to contact Elantec, Inc.
factory headquarters to establish suitable terms & conditions for
these applications. Elantec, Inc.’s warranty is limited to replacement of defective components and does not cover injury to persons or property or other consequential damages.
Elantec, Inc.
1996 Tarob Court
Milpitas, CA 95035
Telephone: (408) 945-1323
(800) 333-6314
Fax: (408) 945-9305
European Office: 44-71-482-4596
12
Printed in U.S.A.