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PDF EL8103 Data sheet ( Hoja de datos )
| Número de pieza | EL8103 | |
| Descripción | 500MHz Rail-to-Rail Amplifiers | |
| Fabricantes | Intersil Corporation | |
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®
Data Sheet
EL8102, EL8103
February 19, 2004
FN7104.5
500MHz Rail-to-Rail Amplifiers
The EL8102, EL8103 represent
single rail-to-rail amplifiers with a
-3dB bandwidth of 500MHz and slew
rate of 600V/µs. Running off a very low 5.6mA supply
current, the EL8102, EL8103 also feature inputs that go to
0.15V below the VS- rail.
The EL8102 includes a fast-acting disable/power-down
circuit. With a 25ns disable and a 200ns enable, the EL8102
is ideal for multiplexing applications.
The EL8102, EL8103 are designed for a number of general
purpose video, communication, instrumentation, and
industrial applications. The EL8102 is available in 8-pin SO
and 6-pin SOT-23 packages and the EL8103 is available in a
5-pin SOT-23 package. All are specified for operation over
the -40°C to +85°C temperature range.
Ordering Information
PART
NUMBER
PACKAGE TAPE & REEL PKG. DWG. #
EL8102IS
8-Pin SO
- MDP0027
EL8102IS-T7
8-Pin SO
7” MDP0027
EL8102IS-T13 8-Pin SO
13” MDP0027
EL8102IW-T7 6-Pin SOT-23 7” (3K pcs)
MDP0038
EL8102IW-T7A 6-Pin SOT-23 7” (250 pcs)
MDP0038
EL8103IW-T7 5-Pin SOT23 7” (3K pcs)
MDP0038
EL8103IW-T7A 5-Pin SOT23 7” (250 pcs)
MDP0038
Features
• 500MHz -3dB bandwidth
• 600V/µs slew rate
• Low supply current = 5.6mA
• Supplies from 3V to 5.0V
• Rail-to-rail output
• Input to 0.15V below VS-
• Fast 25ns disable (EL8102 only)
• Low cost
Applications
• Video amplifiers
• Portable/hand-held products
• Communications devices
Pinouts
EL8102
(8-PIN SO)
TOP VIEW
NC 1
IN- 2
IN+ 3
VS- 4
-
+
8 ENABLE
7 VS+
6 OUT
5 NC
EL8102
(6-PIN SOT-23)
TOP VIEW
OUT 1
6 VS+
VS- 2
5 ENABLE
+-
IN+ 3
4 IN-
EL8103
(5-PIN SOT-23)
TOP VIEW
OUT 1
5 VS+
VS- 2
+-
IN+ 3
4 IN-
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.
1 page  
EL8102, EL8103
Typical Performance Curves (Continued)
5
VS=5V
AV=1
3 CL=5pF
VOP-P=200mV
1
RL=100Ω
RL=1kΩ
-1
RL=500Ω
-3
-5
100K
1M
10M
100M
FREQUENCY (Hz)
1G
FIGURE 5. SMALL SIGNAL FREQUENCY RESPONSE FOR
VARIOUS RLOAD
11
VS=5V
AV=2
9 CL=5pF
RF=RG=1kΩ
7
RL=500Ω
5 RL=1kΩ,
150Ω
3
1
100K
1M 10M 100M
FREQUENCY (Hz)
1G
FIGURE 6. SMALL SIGNAL FREQUENCY RESPONSE vs
VARIOUS RLOAD
5
VS=5V
AV=1
3 RL=1kΩ
VOP-P=200mV
1
CL=10pF
CL=5pF
-1 CL=1.5pF
-3
-5
100K
1M
10M
100M
FREQUENCY (Hz)
1G
FIGURE 7. SMALL SIGNAL FREQUENCY RESPONSE vs CL
11
VS=5V
AV=2
9 RL=1kΩ
RF=RG=1kΩ
7
CL=30pF
CL=20pF
CL=14pF
5
3
1
100K
CL=9pF
CL=5pF
1M 10M 100M
FREQUENCY (Hz)
1G
FIGURE 8. SMALL SIGNAL FREQUENCY RESPONSE FOR
VARIOUS CL
110
RL=1kΩ
70 RL=150Ω
30
RL=150Ω
-10
RL=1kΩ
-50
405
315
225
135
45
-90
1K
10K 100K 1M 10M 100M
FREQUENCY (Hz)
-45
1G
FIGURE 9. OPEN LOOP GAIN AND PHASE vs FREQUENCY
-10
VS=5V
AV=1
-30 RL=1kΩ
-50
-70
-90
-110
1K
10K 100K 1M 10M 100M 1G
FREQUENCY (Hz)
FIGURE 10. DISABLED OUTPUT ISOLATION FREQUENCY
RESPONSE
5
5 Page 
EL8102, EL8103
Typical Applications
VIDEO SYNC PULSE REMOVER
Many CMOS analog to digital converters have a parasitic
latch up problem when subjected to negative input voltage
levels. Since the sync tip contains no useful video
information and it is a negative going pulse, we can chop it
off. Figure 30 shows a gain of 2 connections for EL8102,
EL8103. Figure 31 shows the complete input video signal
applied at the input, as well as the output signal with the
negative going sync pulse removed.
VIN
75Ω
5V
+ VS+
-
VS-
75Ω
1K
1K
VOUT
75Ω
B
2MHz
1VP-P
75Ω
1K
A
2MHz
2VP-P
75Ω
1K
ENABLE
+2.5V
+
-
-2.5V
1K
+2.5V
+
-
-2.5V
1K
75Ω
FIGURE 32. TWO TO ONE MULTIPLEXER
VOUT
75Ω
FIGURE 30. SYNC PULSE REMOVER
VIN
VOUT
1V
0.5V
0V
1V
0.5V
0V
M = 10µs/DIV
FIGURE 31. VIDEO SIGNAL
MULTIPLEXER
Besides the normal power down usage, the ENABLE pin of
the EL8102 can be used for multiplexing applications. Figure
32 shows two EL8102 with the outputs tied together, driving
a back terminated 75Ω video load. A 2VP-P 2MHz sine wave
is applied to Amp A and a 1VP-P 2MHz sine wave is applied
to Amp B. Figure 33 shows the ENABLE signal and the
resulting output waveform at VOUT. Observe the break-
before-make operation of the multiplexing. Amp A is on and
VIN1 is passed through to the output when the ENABLE
signal is low and turns off in about 25ns when the ENABLE
signal is high. About 200ns later, Amp B turns on and VIN2 is
passed through to the output. The break-before-make
operation ensures that more than one amplifier isn’t trying to
drive the bus at the same time.
ENABLE
A
0V
-0.5V
-1.5V
-2.5V
1V
0V
B -1V
M = 50ns/DIV
FIGURE 33.
SINGLE SUPPLY VIDEO LINE DRIVER
The EL8102 and EL8103 are wideband rail-to-rail output op
amplifiers with large output current, excellent dG, dP, and low
distortion that allow them to drive video signals in low supply
applications. Figure 34 is the single supply non-inverting
video line driver configuration and Figure 35 is the inverting
video ling driver configuration. The signal is AC coupled by
C1. R1 and R2 are used to level shift the input and output to
provide the largest output swing. RF and RG set the AC gain.
C2 isolates the virtual ground potential. RT and R3 are the
termination resistors for the line. C1, C2 and C3 are selected
big enough to minimize the droop of the luminance signal.
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet EL8103.PDF ] | |
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