EL5146CSZ Intersil, EL5146CSZ Datasheet - Page 18

• Manufacturer Part Number: EL5146CSZ
• Description: IC AMP VFA SGL 100MHZ R-R 8-SOIC
• Manufacturer: Intersil

Specifications of EL5146CSZ

• Amplifier Type: Voltage Feedback
• Number Of Circuits: 1
• Output Type: Rail-to-Rail
• Slew Rate: 200 V/µs
• Gain Bandwidth Product: 60MHz
• -3db Bandwidth: 100MHz
• Current - Input Bias: 2nA
• Voltage - Input Offset: 15000µV
• Current - Supply: 7mA
• Current - Output / Channel: 120mA
• Voltage - Supply, Single/dual (±): 4.75 V ~ 5.25 V, ±2.38 V ~ 2.63 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PD
where:
The maximum power dissipation actually produced by an IC
is the total quiescent supply current times the total power
supply voltage, plus the power in the IC due to the load, or
as expressed in Equation 2:
where:
If we set the two PD
can solve for R
Assuming worst case conditions of T
V
of all packages and the minimum R
R
S
MAX
L
T
T
θ
PD
N = Number of amplifiers in the package
V
I
V
R
SMAX
= 5.5V, and I
AMAX
JA
JMAX
S
OUT
=
L
EL5144CW
EL5146CS
EL5146CN
EL5244CS
EL5244CN
EL5244CY
EL5246CY
EL5246CS
EL5246CN
EL5444CU
EL5444CS
EL5444CN
MAX
= Load resistance tied to ground
= Total supply voltage
--------------------------------------------------------------------------------------------- -
⎛
⎜
⎝
= Thermal resistance of the package
=
T
-------------------------------------------- -
PART
JMAX
= Maximum output voltage of the application
N
= Maximum supply current per amplifier
= Maximum junction temperature
= Maximum ambient temperature
= Maximum power dissipation in the package
×
N
V
×
V
OUT
- T
θ
S
L
SMAX
JA
×
using Equation 3:
AMAX
×
I
SMAX
(
MAX
V
= 8.8mA per amplifier, following is a table
S
⎞
⎟
⎠
- V
- V
+
equations equal to each other, we
(
PACKAGE
MSOP-10
QSOP-16
SOT23-5
(
SOIC-14
SOIC-14
OUT
MSOP-8
PDIP-14
PDIP-14
SOIC-8
SOIC-8
V
PDIP-8
PDIP-8
S
S
18
×
- V
)
I
SMAX
OUT
L
A
EL5144, EL5146, EL5244, EL5246, EL5444
allowed.
= +85°C, V
)
)
×
V
--------------- -
OUT
R
L
MINIMUM R
OUT
139
37
21
14
48
30
69
69
34
23
85
51
= V
(EQ. 2)
(EQ. 3)
S
L
/2V,
EL5144 Series Comparator Application
The EL5144 series amplifier can be used as a very fast,
single supply comparator. Most op amps used as a
comparator allow only slow speed operation because of
output saturation issues. The EL5144 series amplifier
doesn’t suffer from output saturation issues. Figure 50
shows the amplifier implemented as a comparator. Figure 51
is a graph of propagation delay vs overdrive as a square
wave is presented at the input of the comparator.
Multiplexing with the EL5144 Series Amplifier
Besides normal power-down usage, the CE pin on the
EL5146 and EL5246 series amplifiers also allow for
multiplexing applications. Figure 52 shows an EL5246 with
its outputs tied together, driving a back terminated 75Ω video
load. A 3V
and a 2.4V
shows the SELECT signal that is applied, and the resulting
output waveform at V
operation of the multiplexing. Amp A is on and V
passed through to the output of the amplifier. Then Amp A
turns off in about 10ns. The output decays to ground with an
R
is passed through to the output. This break-before-make
operation ensures that more than one amplifier isn’t trying to
drive the bus at the same time. Notice the outputs are tied
directly together. Isolation resistors at each output are not
necessary.
FIGURE 51. PROPAGATION DELAY vs OVERDRIVE FOR
FIGURE 50. EL5146 AMPLIFIER IMPLEMENTED AS A
L
C
L
+2.5V
time constants. 500ns later, Amp B turns on and V
1000
100
10
V
P-P
0.01
P-P
IN
AMPLIFIER USED AS A COMPARATOR
COMPARATOR
10MHz sine wave is applied at Amp A input,
+
5MHz square wave to Amp B. Figure 53
–
POSITIVE GOING
1
2
3
4
OUT
SIGNAL
OVERDRIVE (V)
. Observe the break-before-make
EL5146
+
-
0.1
NEGATIVE GOING
8
7
6
5
SIGNAL
+5V
0.1µF
R
L
V
1.0
IN1
OUT
March 31, 2011
is being
FN7177.2
IN2