ELANT EL4089CS, EL4089CN Datasheet
EL4089C
DC Restored Video Amplifier
EL4089C January 1996 Rev B
Features
# Complete video level restoration
system
# 0.02% differential gain and 0.05
differential phase accuracy at
NTSC
# 60 MHz bandwidth
# 0.1 dB flatness to 10 MHz
e
S
g
5V tog15V
# V
# TTL/CMOS hold signal
Applications
# Input amplifier in video
equipment
# Restoration amplifier in video
mixers
Ordering Information
Part No. Temp. Range Package Outline
EL4089CN 0§Ctoa75§C 8-Pin P-DIP MDP0031
EL4089CS 0§Ctoa75§C 8-Lead SO MDP0027
General Description
The EL4089C is an 8-pin complete DC-restored monolithic video amplifier sub-system. It contains a high quality video amplifier and a nulling, sample-and-hold amplifier specifically de-
§
signed to stabilize video performance.
When the HOLD logic input is set to a TTL/CMOS logic 0, the
sample- and-hold amplifier can be used to null the DC offset of
the video amplifer.
When the HOLD input goes to a TTL/CMOS logic l, the correcting voltage is stored on the video amplifier’s input coupling
capacitor. The correction voltage can be further corrected as
need be, on each video line.
The video amplifier is optimized for video performance and low
power. Its current feedback design allows the user to maintain
essentially the same bandwidth over a gain range of nearly 10:1.
The amplifier drives back-terminated 75X lines.
The EL4089C is fabricated in Elantec’s proprietary Comple-
Ý
mentary Bipolar process which produces NPN and PNP transistors with equivalent AC and DC performance. The EL4089C
is specified for operation over 0
Ctoa75§C temperature range.
§
Connection Diagram
DC restoring amplifier with a gain of 2, restoring to ground.
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.
4089– 1
EL4089C
DC Restored Video Amplifier
Absolute Maximum Ratings
a
b
Voltage between V
Voltage between V
and GND pins to (V
Current 60 mA
V
OUT
Current into V
Internal Power Dissipation See Curves
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 T
Test Level Test Procedure
I 100% production tested and QA sample tested per QA test plan QCX0002.
II 100% production tested at T
III QA sample tested per QA test plan QCX0002.
IV Parameter is guaranteed (but not tested) by Design and Characterization Data.
V Parameter is typical value at T
and V
, S/H
a
IN
and HOLD Pins 5 mA
b
IN
T
,(V
a
IN
MAX
and T
MIN
A
per QA test plan QCX0002.
e
(T
25§C)
A
33V
a
a
)
0.5V
b)b
0.5V
e
25§C and QA sample tested at T
e
25§C for information purposes only.
A
Operating Ambient
Temperature Range 0
Operating Junction Temperature
Plastic DIP or SOL 150
Storage Temperature Range
Ctoa75§C
§
b
65§Ctoa150§C
e
e
T
TA.
J
C
e
25§C,
A
§
Open Loop DC Electrical Characteristics
Provisional Supplies atg15V, Loade1kX;T
Parameter Description Temp Min Typ Max
Amplifier Section (HOLDe5V)
V
OS
a
Ib
b
Ib
R
OL
R
b
IN
Input Offset Voltage
INaInput Bias Current
INbInput Bias Current
Transimpedance (Note 1)
INbResistance
CMRR Common Mode Rejection Ratio
(Note 2)
V
O
I
SC
Output Voltage Swing
Short Circuit Current
a
Only Driven to 0.5V)
(IN
Restore Section
VOS, Comp Composite Input Offset Voltage
(Note 3)
Iba,r Restore InaInput Bias Current
I
OUT
Restoring Current Available
CMRR Common Mode Rejection Ratio
(Note 2)
A
ea
25§C
Test
Level
a
25§C1225IImV
a
25§C15IImA
a
25§C 18 150 II mA
a
25§C 180 800 II kX
a
25§C20 VX
a
25§C44 60 II dB
a
25§C
a
25§C 45 100 II mA
a
25§C37IImV
a
25§C 3 12 II mA
a
25§C 180 300 II mA
a
25§C60 70 II dB
g
g
12
13 II V
Units
C
TD is 3.5in
2
EL4089C
DC Restored Video Amplifier
Open Loop DC Electrical Characteristics
Provisional Supplies atg15V, Loade1kX;T
Parameter Description Temp Min Typ Max
A
ea
25§C
Ð Contd.
Test
Level
Restore Section ÐContd.
PSRR Power Supply Rejection Ratio (Note 4)
V
THRESHOLD
HOLD Logic Threshold
IIH, Hold HOLD Input Current@Logic High
I
, Hold HOLD Input Current@Logic Low
IL
a
25§C60 90 II dB
a
25§C 0.8 2.0 II V
a
25§C15IImA
a
25§C 5 15 II mA
Supply Current
Isy, Hold Supply Current (HOLDe5V)
Isy, Sampling Supply Current (HOLDe0V)
a
25§C 4.8 6.0 9.0 II mA
a
25§C 5.0 6.5 11.0 II mA
Closed Loop AC Electrical Characteristics
Provisional Supplies atg15V, Loade150X and 15 pF. Rfand R
g
e
300X;A
Parameter Description Min Typ Max
Amplifier Section
SR Slew Rate (Note 5) 500 V V/ms
SR Slew Rate withg5V Supplies
(Note 5)
BW Bandwidth
g
5V Supplies
BW Bandwidth
g
5V Supplies
dG Differential Gain V
at 3.58 MHz (Note 6) V
dPh Differential Phase V
at 3.58 MHz (Note 6) V
b
3 dB 60 V MHz
b
3 dB 55 V MHz
g
0.1 dB 25 V MHz
g
0.1 dB 23 V MHz
e
g
15V 0.02 V %
S
e
g
5V 0.03 V %
S
e
g
15V 0.05 V
S
e
g
5V 0.06 V
S
Restore Section
SR Restore Amplifier Slew Rate
(Test Circuit) 20% –80%
T
HE
T
HD
Note 1: For current feedback amplifiers, A
Note 2: V
Note 3: Measured from S/H Input to amplifier output, while restoring.
Note 4: V
Note 5: SR measured at 20% to 80% of a 4V pk-pk square wave.
CM
is measured at V
OS
Note 6: DC offset from
Note 7: Test fixture was designed to minimize capacitance at the IN
capacitance to ground at this very sensitive pin. See application notes for further details.
Time to Enable Hold 25 V ns
Time to Disable Hold 40 V ns
e
e
g
10V for V
g
15V.
g
4.5V and V
VOL
e
S
e
S
e
S
b
0.714V througha0.714V, ac amplitude is 286 mVp-p, equivalent to 40 ire.
ROL/R
.
b
IN
g
16V, both supplies are changed simultaneously.
b
e
e
2, T
V
25§C. (See Note 7 about Test Fixture)
A
Test
Level
275 V V/ms
25 V V/ms
input. A ‘‘good’’ fixture should have less than 2 pF of stray
Units
Units
§
§
TD is 3.2in TD is 3.2in
3
Loading...