EL5144 [INTERSIL]
100MHz Single-Supply Rail-to-Rail Amplifiers; 100MHz的单电源轨到轨放大器
| 型号： | EL5144 |
| 厂家： | 
Intersil |
| 描述： | 100MHz Single-Supply Rail-to-Rail Amplifiers |
| 文件： | 总19页 (文件大小：498K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EL5144, EL5146, EL5244, EL5246, EL5444
®
Data Sheet
April 13, 2005
FN7177.1
100MHz Single-Supply Rail-to-Rail
Amplifiers
Features
• Rail-to-rail output swing
The EL5144 series amplifiers are voltage-feedback, high
speed, rail-to-rail amplifiers designed to operate on a single
+5V supply. They offer unity gain stability with an unloaded -
3dB bandwidth of 100MHz. The input common-mode voltage
range extends from the negative rail to within 1.5V of the
positive rail. Driving a 75Ω double terminated coaxial cable,
the EL5144 series amplifiers drive to within 150mV of either
rail. The 200V/µs slew rate and 0.1%/0.1° differential
gain/differential phase makes these parts ideal for composite
and component video applications. With their voltage-
feedback architecture, these amplifiers can accept reactive
feedback networks, allowing them to be used in analog
filtering applications These amplifiers will source 90mA and
sink 65mA.
• -3dB bandwidth = 100MHz
• Single-supply +5V operation
• Power-down to 2.6µA
• Large input common-mode range 0V < V
• Diff gain/phase = 0.1%/0.1°
• Low power 35mW per amplifier
< 3.5V
CM
• Space-saving SOT23-5, MSOP8 & 10, & QSOP16
packages
• Pb-Free available (RoHS compliant)
Applications
The EL5146 and EL5246 have a power-savings disable
feature. Applying a standard TTL low logic level to the CE
(Chip Enable) pin reduces the supply current to 2.6µA within
10ns. Turn-on time is 500ns, allowing true break-before-
make conditions for multiplexing applications. Allowing the
CE pin to float or applying a high logic level will enable the
amplifier.
• Video amplifiers
• 5V analog signal processing
• Multiplexers
• Line drivers
• Portable computers
• High speed communications
• Sample & hold amplifiers
• Comparators
For applications where board space is critical, singles are
offered in a 5-pin SOT-23 package, duals in 8- and 10-pin
MSOP packages, and quads in a 16-pin QSOP package.
Singles, duals, and quads are also available in industry-
standard pinouts in SO and PDIP packages. All parts
operate over the industrial temperature range of -40°C to
+85°C.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1
1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2003, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
EL5144, EL5146, EL5244, EL5246, EL5444
Ordering Information (Continued)
Ordering Information
PART NUMBER
PACKAGE
TAPE & REEL PKG. DWG. #
PART NUMBER
EL5144CW-T7
EL5144CW-T7A
PACKAGE
5-Pin SOT-23*
5-Pin SOT-23*
TAPE & REEL PKG. DWG. #
EL5246CYZ
(See Note)
10-Pin MSOP
(Pb-free)
-
MDP0043
MDP0043
MDP0043
7” (3K pcs)
7” (250 pcs)
7” (3K pcs)
MDP0038
MDP0038
MDP0038
EL5246CYZ-T7
(See Note)
10-Pin MSOP
(Pb-free)
7”
EL5144CWZ-T7
(See Note)
5-Pin SOT-23*
(Pb-free)
EL5246CYZ-T13
(See Note)
10-Pin MSOP
(Pb-free)
13”
EL5144CWZ-T7A 5-Pin SOT-23*
7” (250 pcs)
MDP0038
(See Note)
(Pb-free)
8-Pin PDIP
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
EL5444CN
14-Pin PDIP
14-Pin SOIC
14-Pin SOIC
14-Pin SOIC
-
-
MDP0031
MDP0027
MDP0027
MDP0027
MDP0027
EL5146CN
-
-
MDP0031
MDP0027
MDP0027
MDP0027
MDP0027
EL5444CS
EL5146CS
EL5444CS-T7
EL5444CS-T13
7”
13”
-
EL5146CS-T7
EL5146CS-T13
7”
13”
-
EL5444CSZ
(See Note)
14-Pin SOIC
(Pb-free)
EL5146CSZ
(See Note)
8-Pin SOIC
(Pb-free)
EL5444CSZ-T7
(See Note)
14-Pin SOIC
(Pb-free)
7”
MDP0027
MDP0027
EL5146CSZ-T7
(See Note)
8-Pin SOIC
(Pb-free)
7”
MDP0027
MDP0027
EL5444CSZ-T13
(See Note)
14-Pin SOIC
(Pb-free)
13”
EL5146CSZ-T13
(See Note)
8-Pin SOIC
(Pb-free)
13”
EL5444CU
16-Pin QSOP
16-Pin QSOP
-
13”
-
MDP0040
MDP0040
MDP0040
EL5244CN
8-Pin PDIP
8-Pin SOIC
8-Pin SOIC
8-Pin SOIC
-
-
MDP0031
MDP0027
MDP0027
MDP0027
MDP0027
EL5444CU-T13
EL5244CS
EL5444CUZ
(See Note)
16-Pin QSOP
(Pb-free)
EL5244CS-T7
EL5244CS-T13
7”
13”
-
EL5444CUZ-T7
(See Note)
16-Pin QSOP
(Pb-free)
7”
MDP0040
MDP0040
EL5244CSZ
(See Note)
8-Pin SOIC
(Pb-free)
EL5444CUZ-T13
(See Note)
16-Pin QSOP
(Pb-free)
13”
EL5244CSZ-T7
(See Note)
8-Pin SOIC
(Pb-free)
7”
MDP0027
MDP0027
*EL5144CW symbol is .Jxxx where xxx represents date
EL5244CSZ-T13
(See Note)
8-Pin SOIC
(Pb-free)
13”
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
EL5244CY
8-Pin MSOP
8-Pin MSOP
-
13”
-
MDP0043
MDP0043
MDP0043
EL5244CY-T13
EL5244CYZ
(See Note)
8-Pin MSOP
(Pb-free)
EL5244CYZ-T7
(See Note)
8-Pin MSOP
(Pb-free)
7”
MDP0043
MDP0043
EL5244CYZ-T13
(See Note)
8-Pin MSOP
(Pb-free)
13”
EL5246CN
14-Pin PDIP
14-Pin SOIC
14-Pin SOIC
14-Pin SOIC
-
-
MDP0031
MDP0027
MDP0027
MDP0027
MDP0027
EL5246CS
EL5246CS-T7
EL5246CS-T13
7”
13”
-
EL5246CSZ
(See Note)
14-Pin SOIC
(Pb-free)
EL5246CSZ-T7
(See Note)
14-Pin SOIC
(Pb-free)
7”
MDP0027
MDP0027
EL5246CSZ-T13
(See Note)
14-Pin SOIC
(Pb-free)
13”
EL5246CY
10-Pin MSOP
10-Pin MSOP
-
MDP0043
MDP0043
EL5246CY-T13
13”
2
EL5144, EL5146, EL5244, EL5246, EL5444
s
Pinouts
EL5144
(5-PIN SOT-23)
TOP VIEW
EL5146 & EL5146
(8-PIN SO, PDIP)
TOP VIEW
OUT
GND
IN+
1
2
3
5
4
VS
NC
IN-
1
2
3
4
8
7
6
5
CE
VS
-
+
-
+
IN-
IN+
OUT
NC
GND
EL5244
(8-PIN SOIC, PDIP, MSOP)
EL5246
(10-PIN MSOP)
TOP VIEW
EL5246
(14-PIN SOIC, PDIP)
TOP VIEW
TOP VIEW
OUT
1
2
3
4
8
7
6
5
V
IN
+
1
2
3
4
5
10 IN
-
A
1
2
3
4
5
6
7
14
IN
-
IN
+
A
S
A
A
A
-
-
IN
-
-
OUT
CEA
GND
CEB
9
8
7
6
OUT
NC
13
12
11
10
9
OUT
A
B
A
A
+
+
+
IN
+
IN
-
V
S
CEA
NC
A
B
B
-
+
-
IN
+
+
GND
OUT
GND
CEB
NC
V
S
B
IN
+
IN
-
NC
B
B
+
-
OUT
B
8
IN
+
IN
-
B
B
EL5444
(14-PIN SOIC, PDIP)
EL5444
(16-PIN QSOP)
TOP VIEW
TOP VIEW
1
14 OUT
1
16
15
OUT
OUT
D
OUT
A
D
A
IN
-
2
3
4
5
6
7
8
2
3
4
5
6
7
13
12
11
10
9
IN
IN
-
IN
-
IN
-
A
D
A
D
IN
+
14 IN
+
IN
+
+
A
D
A
D
13 GND
V
GND
V
V
S
+
S
IN
12
11
GND
IN
+
B
S
+
C
C
IN
IN
-
IN
+
-
B
IN
-
B
C
IN
-
10 IN
OUT
8
B
OUT
C
B
C
9
OUT
C
OUT
B
3
EL5144, EL5146, EL5244, EL5246, EL5444
Absolute Maximum Ratings (T = 25°C)
A
Supply Voltage between V and GND. . . . . . . . . . . . . . . . . . . . .+6V
S
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 50mA
Pin Voltages. . . . . . . . . . . . . . . . . . . . . . . . . GND -0.5V to V +0.5V
S
Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: T = T = T
A
J
C
Electrical Specifications
V = +5V, GND = 0V, T = 25°C, CE = +2V, unless otherwise specified.
S A
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
AC PERFORMANCE
d
d
Differential Gain Error (Note 1)
Differential Phase Error (Note 1)
Bandwidth
G = 2, R = 150Ω to 2.5V, R = 1kΩ
0.1
0.1
100
60
%
G
P
L
F
G = 2, R = 150Ω to 2.5V, R = 1kΩ
°
L
F
BW
-3dB, G = 1, R = 10kΩ, R = 0
MHz
MHz
MHz
MHz
V/µs
L
F
-3dB, G = 1, R = 150Ω, R = 0
L
F
BW1
GBWP
SR
Bandwidth
±0.1dB, G = 1, R = 150Ω to GND, R = 0
8
L
F
Gain Bandwidth Product
Slew Rate
60
G = 1, R = 150Ω to GND, R = 0, V = 0.5V
150
200
L
F
O
to 3.5V
t
Settling Time
to 0.1%, V
= 0V to 3V
OUT
35
ns
S
DC PERFORMANCE
A
V
Open Loop Voltage Gain
Offset Voltage
R = no load, V = 0.5V to 3V
OUT
54
40
65
50
dB
dB
VOL
L
R = 150Ω to GND, V
= 0.5V to 3V
L
OUT
V
V
= 1V, SOT23-5 and MSOP packages
25
15
mV
OS
CM
CM
= 1V, All other packages
= 0V & 3.5V
mV
T V
Input Offset Voltage Temperature
Coefficient
10
2
mV/°C
C
OS
I
Input Bias Current
V
100
3.5
nA
B
CM
INPUT CHARACTERISTICS
CMIR
Common Mode Input Range
CMRR ≥ 47dB
0
V
CMRR
Common Mode Rejection Ratio
DC, V
DC, V
= 0 to 3.0V
= 0 to 3.5V
50
47
60
60
dB
dB
GΩ
pF
CM
CM
R
C
Input Resistance
Input Capacitance
1.5
1.5
IN
IN
OUTPUT CHARACTERISTICS
V
Positive Output Voltage Swing
R = 150Ω to 2.5V (Note 2)
4.70
4.20
4.95
4.85
4.65
4.97
0.15
0
V
V
OP
L
R = 150Ω to GND (Note 2)
L
R = 1kΩ to 2.5V (Note 2)
V
L
V
Negative Output Voltage Swing
R = 150Ω to 2.5V (Note 2)
0.30
V
ON
L
R = 150Ω to GND (Note 2)
V
L
R = 1kΩ to 2.5V (Note 2)
0.03
90
0.05
120
-80
V
L
+I
Positive Output Current
Negative Output Current
R = 10Ω to 2.5V
60
mA
mA
OUT
L
-I
R = 10Ω to 2.5V
-50
-65
OUT
L
ENABLE (EL5146 & EL5246 ONLY)
4
EL5144, EL5146, EL5244, EL5246, EL5444
Electrical Specifications
V
= +5V, GND = 0V, T = 25°C, CE = +2V, unless otherwise specified. (Continued)
S
A
PARAMETER
DESCRIPTION
Enable Time
CONDITIONS
EL5146, EL5246
MIN
TYP
500
MAX
UNIT
ns
t
t
I
I
EN
Disable Time
EL5146, EL5246
10
ns
DIS
CE pin Input High Current
CE pin Input Low Current
CE = 5V, EL5146, EL5246
CE = 0V, EL5146, EL5246
0.003
-1.2
1
mA
mA
V
IHCE
ILCE
-3
V
CE pin Input High Voltage for Power EL5146, EL5246
Up
2.0
IHCE
V
CE pin Input Low Voltage for Power EL5146, EL5246
Down
0.8
V
ILCE
SUPPLY
Is
Supply Current - Enabled (per
amplifier)
No load, V = 0V, CE = 5V
IN
7
8.8
5
mA
mA
ON
Is
Supply Current - Disabled (per
amplifier)
No load, V = 0V, CE = 0V
IN
2.6
OFF
PSOR
PSRR
Power Supply Operating Range
Power Supply Rejection Ratio
4.75
50
5.0
60
5.25
V
DC, V = 4.75V to 5.25V
dB
S
NOTES:
1. Standard NTSC test, AC signal amplitude = 286mV
, f = 3.8MHz, V
P-P
is swept from 0.8V to 3.4V, R is DC-coupled.
OUT L
2. R is total load resistance due to feedback resistor and load resistor.
L
5
EL5144, EL5146, EL5244, EL5246, EL5444
Typical Performance Curves
Non-Inverting Frequency Response (Gain)
Non-Inverting Frequency Response (Phase)
2
0
A
=1, R =0Ω
F
V
0
-45
A
=1, R =0Ω
F
V
A
=2, R =1kΩ
A =5.6, R =1kΩ
V F
V
F
-2
-4
-6
-8
-90
A
=5.6, R =1kΩ
A
=2, R =1kΩ
V
F
V
F
-135
-180
V
=1.5V
V
=1.5V
CM
R =150Ω
CM
R =150Ω
L
L
1M
10M
Frequency (Hz)
100M
1M
10M
100M
Frequency (Hz)
Inverting Frequency Response (Gain)
Inverting Frequency Response (Phase)
2
0
180
135
90
45
0
A
=-1
A =-1
V
V
A
=-2
A =-2
V
V
-2
-4
-6
-8
A
=-5.6
A =-5.6
V
V
V
=1.5V
V
=1.5V
CM
F
L
CM
R =1kΩ
R =1kΩ
R =150Ω
F
R =150Ω
L
1M
10M
Frequency (Hz)
100M
1M
10M
Frequency (Hz)
100M
3dB Bandwidth vs Die Temperature for Various Gains
3dB Bandwidth vs Die Temperature for Various Gains
100
80
60
40
20
0
150
120
90
60
30
0
R =150Ω
R =10kΩ
L
L
A
=1, R =0Ω
F
V
A
=1, R =0Ω
F
V
A
=2, R =1kΩ
F
V
A
=2, R =1kΩ
F
V
A
=5.6, R =1kΩ
V
F
A =5.6, R =1kΩ
V F
-55
-15
25
65
105
145
-55
-15
25
65
105
145
Die Temperature (°C)
Die Temperature (°C)
6
EL5144, EL5146, EL5244, EL5246, EL5444
Typical Performance Curves (Continued)
Frequency Response for Various R
Frequency Response for Various C
L
L
V
=1.5V
V
=1.5V
CM
R =0Ω
CM
R =150Ω
C =100pF
L
4
2
8
4
F
L
A
=1
A =1
V
V
C =47pF
L
R =10kΩ
L
0
0
R =520Ω
L
C =22pF
L
-2
-4
-4
-8
C =0pF
L
R =150Ω
L
1M
10M
Frequency (Hz)
100M
1M
10M
100M
100M
145
Frequency (Hz)
Frequency Response for Various R and R
Group Delay vs Frequency
F
G
10
8
2
0
R =R =2kΩ
F
G
A
=2
V
R =R =1kΩ
F
G
R =1kΩ
F
6
-2
-4
-6
R =R =560Ω
F
G
4
A
=1
V
R =1Ω
F
2
V
=1.5V
CM
R =150Ω
A
L
V
=2
0
1M
1M
10M
100M
10M
Frequency (Hz)
Frequency (Hz)
Open Loop Gain and Phase vs Frequency
Open Loop Voltage Gain vs Die Temperature
0
80
70
60
50
40
30
80
60
40
20
0
R =1kΩ
45
90
L
Phase
No Load
R =150Ω
L
135
Gain
R =150Ω
L
180
225
1k
10k
100k
1M
10M
100M
-55
-15
25
65
105
Frequency (Hz)
Die Temperature (°C)
7
EL5144, EL5146, EL5244, EL5246, EL5444
Typical Performance Curves (Continued)
Voltage Noise vs Frequency - Video Amp
Closed Loop Output Impedance vs Frequency
10k
1k
200
20
2
R =0Ω
F
A
=2
V
100
10
0.2
10
100
1k
10k 100k
1M
10M 100M
10k
100k
1M
10M
100M
Frequency (Hz)
Frequency (Hz)
Offset Voltage vs Die Temperature
(6 Typical Samples)
PSRR and CMRR vs Frequency
20
0
12
6
CMRR
-20
-40
-60
-80
PSRR-
0
-6
-12
PSRR+
-55
-15
25
65
105
145
1k
10k
100k
1M
10M
100M
Die Temperature (°C)
Frequency (Hz)
Output Voltage Swing vs Frequency for THD < 1%
Output Voltage Swing vs Frequency for THD < 0.1%
5
4
3
2
1
0
5
4
3
2
1
0
R =1kΩ
R =1kΩ
F
V
F
A
=2
A =2
V
R =500Ω to 2.5V
L
R =150Ω to 2.5V
R =500Ω to 2.5V
L
L
R =150Ω to 2.5V
L
1M
10M
Frequency (Hz)
100M
1M
10M
100M
Frequency (Hz)
8
EL5144, EL5146, EL5244, EL5246, EL5444
Typical Performance Curves (Continued)
Large Signal Pulse Response (Single Supply)
Small Signal Pulse Response (Single Supply)
4
3
2
1
0
1.9
1.7
1.5
1.3
1.1
V
=5V
V =5V
S
S
R =150Ω to 0V
R =1kΩ
A
R =150Ω to 0V
L
L
R =1kΩ
F
F
V
=2
A =2
V
Time (20ns/div)
Time (20ns/div)
Large Signal Pulse Response (Split Supplies)
Small Signal Pulse Response (Split Supply)
4
2
0.4
0.2
0
V
=±2.5V
V =±2.5V
S
S
R =150Ω to 0V
R =1kΩ
A
R =150Ω to 0V
L
L
R =1kΩ
F
F
V
=2
A =2
V
0
-2
-4
-0.2
-0.4
Time (20ns/div)
Time (20ns/div)
Settling Time vs Settling Accuracy
Slew Rate vs Die Temperature
100
80
60
40
20
0
250
200
150
R =1kΩ
L
R =500Ω
F
V
STEP
A
V
=-1
=3V
0.01
0.1
Settling Accuracy (%)
1
-55
-15
25
65
105
145
Die Temperature (°C)
9
EL5144, EL5146, EL5244, EL5246, EL5444
Typical Performance Curves (Continued)
Differential Phase for R Tied to 0V
Differential Gain for R Tied to 0V
L
L
R =0Ω
R =0Ω
F
V
F
0.08
0.04
0
0.2
0.1
0
A
=1
A =1
V
R =10kΩ
L
R =10kΩ
L
R =150Ω
L
R =150Ω
L
-0.04
-0.08
-0.1
-0.2
0.25
1.75
(V)
3.25
0.25
1.75
V (V)
OUT
3.25
V
OUT
Differential Gain for R Tied to 2.5V
Differential Phase for R Tied to 2.5V
L
L
R =0Ω
R =0Ω
F
V
F
0.2
0.1
0
0.2
0.1
0
A
=1
A =1
V
R =10kΩ
L
R =10kΩ
L
-0.1
-0.2
-0.1
-0.2
R =150Ω
L
R =150Ω
L
0.5
2
3.5
0.5
2
3.5
V
(V)
V
(V)
OUT
OUT
Differential Gain for R Tied to 0V
Differential Phase for R Tied to 0V
L
L
R =1kΩ
R =1kΩ
F
V
F
V
0.2
0.1
0
R =150Ω
0.2
0.1
0
L
R =150Ω
A
=2
A =2
L
R =10kΩ
L
R =10kΩ
L
-0.1
-0.2
-0.1
-0.2
0.5
2
3.5
0.5
2
3.5
V
(V)
V
(V)
OUT
OUT
10
EL5144, EL5146, EL5244, EL5246, EL5444
Typical Performance Curves (Continued)
Differential Gain for R Tied to 2.5V
Differential Phase for R Tied to 2.5V
L
L
R =1kΩ
R =1kΩ
F
V
F
0.2
0.1
0
0.2
0.1
0
A
=2
A =2
V
R =10kΩ
L
R =150Ω
L
R =150Ω
-0.1
-0.2
-0.1
-0.2
L
R =10kΩ
L
0.5
2
3.5
0.5
2
3.5
V
(V)
V
(V)
OUT
OUT
2nd and 3rd Harmonic Distortion vs Frequency
2nd and 3rd Harmonic Distortion vs Frequency
-25
-35
-45
-55
-65
-75
-25
-35
-45
-55
-65
-75
HD3
HD3
HD2
HD2
V
=0.25V to 2.25V
V
=0.5V to 2.5V
OUT
R =100Ω to 0V
OUT
R =100Ω to 0V
L
L
1M
10M
100M
1M
10M
Frequency (Hz)
100M
Frequency (Hz)
2nd and 3rd Harmonic Distortion vs. Frequency
Channel to Channel Crosstalk - Duals and Quads
(Worst Channel)
-25
-35
-45
-55
-65
-75
0
-20
HD3
-40
HD2
-60
-80
V =1Vto 3V
OUT
L
R =100Ω to 0V
-100
1M
10M
100M
100k
1M
10M
100M
Frequency (Hz)
Frequency (Hz)
11
EL5144, EL5146, EL5244, EL5246, EL5444
Typical Performance Curves (Continued)
Supply Current (per Amp) vs Supply Voltage
Output Current vs Die Temperature
120
100
80
R =10Ω to 2.5V
L
8
6
4
2
0
Source
60
Sink
25
40
20
-55
0
1
2
3
4
5
-15
65
105
105
105
145
145
145
Supply Voltage (V)
Die Temperature (°C)
Supply Current - ON (per Amp) vs Die Temperature
Supply Current - OFF (per Amp) vs Die
Temperature
9
8
7
6
5
4
5
4
3
2
1
0
-55
-15
25
65
105
145
-55
-15
25
65
Die Temperature (°C)
Die Temperature (°C)
Positive Output Voltage Swing vs Die Temperature
Negative Output Voltage Swing vs Die
Temperature
5
4.9
4.8
4.7
4.6
4.5
0.5
0.4
0.3
0.2
0.1
0
R =150Ω
L
R =150Ω to 2.5V
L
R =150Ω to 2.5V
L
R =150Ω to 0V
L
R =150Ω to 0V
L
-55
-15
25
65
105
145
-55
-15
25
65
Die Temperature (°C)
Die Temperature (°C)
12
EL5144, EL5146, EL5244, EL5246, EL5444
Typical Performance Curves (Continued)
Output Voltage from Either Rail vs Die
Temperature for Various Effective R
OFF Isolation - EL5146 & EL5246
LOAD
300
100
-20
-40
EL5146CS &
EL5146CN
-60
EL5246CS
10
-80
EL5246CN
-100
Effective R
-15
= R //R to V /2
L F S
LOAD
1
-55
-120
10k
25
65
105
145
100k
1M
10M
100M
Die Temperature (°C)
Frequency (Hz)
Maximum Power Dissipation vs. Ambient
Temperature Singles (T = 150°C)
Maximum Power Dissipation vs. Ambient
Temperature Duals (T
= 150°C)
JMAX
JMAX
2.0
1.6
1.2
0.8
0.4
0
2.5
2.0
1.5
1.0
0.5
0
PDIP-14, ΘJA = 87°C/W
PDIP-8, ΘJA = 107°C/W
SOIC-14, ΘJA = 120°C/W
PDIP, ΘJA = 110°C/W
SOIC, ΘJA = 161°C/W
SOIC-8, ΘJA = 159°C/W
MSOP-8,10, ΘJA = 206°C/W
SOT23-5, ΘJA = 256°C/W
-50
-20
10
40
70
100
-50
-20
10
40
70
100
Ambient Temperature (°C)
Ambient Temperature (°C)
Maximum Power Dissipation vs. Ambient
Temperature Quads (T = 150°C)
JMAX
2.5
2.0
1.5
1.0
0.5
0
PDIP-14, ΘJA = 83°C/W
SOIC-14, ΘJA = 118°C/W
QSOP-16, ΘJA = 158°C/W
-50
-20
10
40
70
100
Ambient Temperature (°C)
13
EL5144, EL5146, EL5244, EL5246, EL5444
Pin Descriptions
8-PIN
SO/PDIP/ 16-PIN
5-PIN
SOT23 SO/PDIP
8-PIN
14-PIN
14-PIN
16-PIN
QSOP
MSOP
MSOP SO/PDIP SO/PDIP
NAME
FUNCTION
EQUIVALENT CIRCUIT
5
2
7
4
8
8
3
11
4
4
4,5
VS
Positive Power
Supply
4
11
12,13
GND
IN+
Ground or
Negative Power
Supply
3
3
Noninverting
Input
V
S
GND
Circuit 1
(Reference Circuit 1)
4
1
2
6
IN-
Inverting Input
OUT
Amplifier Output
V
S
GND
Circuit 2
3
1
1
3
3
INA+
Amplifier A
Noninverting
Input
(Reference Circuit 1)
2
1
5
10
9
14
13
7
2
1
5
2
1
6
INA-
OUTA
INB+
Amplifier A
Inverting Input
(Reference Circuit 1)
(Reference Circuit 2)
(Reference Circuit 1)
Amplifier A
Output
5
Amplifier B
Noninverting
Input
6
7
6
7
8
9
6
7
7
8
INB-
OUTB
INC+
Amplifier B
Inverting Input
(Reference Circuit 1)
(Reference Circuit 2)
(Reference Circuit 1)
Amplifier B
Output
10
11
Amplifier C
Noninverting
Input
9
8
10
9
INC-
OUTC
IND+
Amplifier C
Inverting Input
(Reference Circuit 1)
(Reference Circuit 2)
(Reference Circuit 1)
Amplifier C
Output
12
14
Amplifier D
Noninverting
Input
13
15
IND-
Amplifier D
(Reference Circuit 1)
Inverting Input
14
EL5144, EL5146, EL5244, EL5246, EL5444
Pin Descriptions (Continued)
8-PIN
5-PIN
SOT23 SO/PDIP
8-PIN
SO/PDIP/ 16-PIN
14-PIN
14-PIN
16-PIN
QSOP
MSOP
MSOP SO/PDIP SO/PDIP
NAME
FUNCTION
EQUIVALENT CIRCUIT
(Reference Circuit 2)
14
16
OUTD
Amplifier D
Output
8
CE
Enable(Enabled
when high)
V
S
+
–
1.4V
GND
Circuit 3
2
4
3
5
CEA
CEB
NC
Enable Amplifier (Reference Circuit 3)
A (Enabled
when high)
Enable Amplifier (Reference Circuit 3)
B (Enabled
when high)
1,5
2,6,
10,12
No Connect. Not
internally
connected.
suffice. This same capacitor combination should be placed
at each supply pin to ground if split supplies are to be used.
In this case, the GND pin becomes the negative supply rail.
Description of Operation and Applications
Information
Product Description
For good AC performance, parasitic capacitance should be
kept to a minimum. Use of wire wound resistors should be
avoided because of their additional series inductance. Use of
sockets, particularly for the SO package, should be avoided
if possible. Sockets add parasitic inductance and
The EL5144 series is a family of wide bandwidth, single
supply, low power, rail-to-rail output, voltage feedback
operational amplifiers. The family includes single, dual, and
quad configurations. The singles and duals are available with
a power down pin to reduce power to 2.6µA typically. All the
amplifiers are internally compensated for closed loop
feedback gains of +1 or greater. Larger gains are acceptable
but bandwidth will be reduced according to the familiar Gain-
Bandwidth Product.
capacitance that can result in compromised performance.
Input, Output, and Supply Voltage Range
The EL5144 series has been designed to operate with a
single supply voltage of 5V. Split supplies can be used so
long as their total range is 5V.
Connected in voltage follower mode and driving a high
impedance load, the EL5144 series has a -3dB bandwidth of
100MHz. Driving a 150Ω load, they have a -3dB bandwidth
of 60MHz while maintaining a 200V/µs slew rate. The input
common mode voltage range includes ground while the
output can swing rail to rail.
The amplifiers have an input common mode voltage range
that includes the negative supply (GND pin) and extends to
within 1.5V of the positive supply (V pin). They are
S
specified over this range.
The output of the EL5144 series amplifiers can swing rail to
rail. As the load resistance becomes lower in value, the
ability to drive close to each rail is reduced. However, even
with an effective 150Ω load resistor connected to a voltage
halfway between the supply rails, the output will swing to
within 150mV of either rail.
Power Supply Bypassing and Printed Circuit
Board Layout
As with any high-frequency device, good printed circuit
board layout is necessary for optimum performance. Ground
plane construction is highly recommended. Lead lengths
should be as short as possible. The power supply pin must
be well bypassed to reduce the risk of oscillation For normal
single supply operation, where the GND pin is connected to
the ground plane, a single 4.7µF tantalum capacitor in
parallel with a 0.1µF ceramic capacitor from V to GND will
S
15
EL5144, EL5146, EL5244, EL5246, EL5444
Figure 1 shows the output of the EL5144 series amplifier
Video Performance
swinging rail to rail with R = 1kΩ, A = +2 and R = 1MΩ.
F
V
L
For good video signal integrity, an amplifier is required to
maintain the same output impedance and the same
Figure 2 is with R = 150Ω.
L
frequency response as DC levels are changed at the output.
This can be difficult when driving a standard video load of
150Ω, because of the change in output current with DC level.
A look at the Differential Gain and Differential Phase curves
for various supply and loading conditions will help you obtain
5V
optimal performance. Curves are provided for A = +1 and
V
+2, and R = 150Ω and 10kΩ tied both to ground as well as
L
2.5V. As with all video amplifiers, there is a common mode
sweet spot for optimum differential gain/differential phase.
0V
For example, with A = +2 and R = 150Ω tied to 2.5V, and
V
L
the output common mode voltage kept between 0.8V and
3.2V, dG/dP is a very low 0.1%/0.1°. This condition
corresponds to driving an AC-coupled, double terminated
FIGURE 1.
75Ω coaxial cable. With A = +1, R = 150Ω tied to ground,
V
L
and the video level kept between 0.85V and 2.95V, these
amplifiers provide dG/dP performance of 0.05%/0.20°. This
condition is representative of using the EL5144 series
amplifier as a buffer driving a DC coupled, double
5V
terminated, 75Ω coaxial cable. Driving high impedance
loads, such as signals on computer video cards, gives
similar or better dG/dP performance as driving cables.
Driving Cables and Capacitive Loads
0V
The EL5144 series amplifiers can drive 50pF loads in
parallel with 150Ω with 4dB of peaking and 100pF with 7dB
of peaking. If less peaking is desired in these applications, a
small series resistor (usually between 5Ω and 50Ω) can be
placed in series with the output to eliminate most peaking.
However, this will obviously reduce the gain slightly. If your
FIGURE 2.
Choice of Feedback Resistor, R
F
gain is greater than 1, the gain resistor (R ) can then be
G
These amplifiers are optimized for applications that require a
gain of +1. Hence, no feedback resistor is required.
However, for gains greater than +1, the feedback resistor
forms a pole with the input capacitance. As this pole
becomes larger, phase margin is reduced. This causes
ringing in the time domain and peaking in the frequency
chosen to make up for any gain loss which may be created
by this additional resistor at the output. Another method of
reducing peaking is to add a “snubber” circuit at the output. A
snubber is a resistor in a series with a capacitor, 150Ω and
100pF being typical values. The advantage of a snubber is
that it does not draw DC load current.
domain. Therefore, R has some maximum value that
F
should not be exceeded for optimum performance. If a large
When used as a cable driver, double termination is always
recommended for reflection-free performance. For those
applications, the back-termination series resistor will de-
couple the EL5144 series amplifier from the cable and allow
extensive capacitive drive. However, other applications may
have high capacitive loads without a back-termination
resistor. Again, a small series resistor at the output can
reduce peaking.
value of R must be used, a small capacitor in the few
F
picofarad range in parallel with R can help to reduce this
F
ringing and peaking at the expense of reducing the
bandwidth.
As far as the output stage of the amplifier is concerned, R +
F
R
appear in parallel with R for gains other than +1. As this
G
L
combination gets smaller, the bandwidth falls off.
Consequently, R also has a minimum value that should not
be exceeded for optimum performance.
F
Disable/Power-Down
The EL5146 and EL5246 amplifiers can be disabled, placing
its output in a high-impedance state. Turn off time is only
10ns and turn on time is around 500ns. When disabled, the
amplifier’s supply current is reduced to 2.6µA typically,
thereby effectively eliminating power consumption. The
amplifier’s power down can be controlled by standard TTL or
CMOS signal levels at the CE pin. The applied logic signal is
For A = +1, R = 0Ω is optimum. For A = -1 or +2 (noise
V
F
V
gain of 2), optimum response is obtained with R between
F
300Ω and 1kΩ. For A = -4 or +5 (noise gain of 5), keep R
V
F
between 300Ω and 15kΩ.
16
EL5144, EL5146, EL5244, EL5246, EL5444
relative to the GND pin. Letting the CE pin float will enable
the amplifier. Hence, the 8-pin PDIP and SOIC single amps
are pin compatible with standard amplifiers that don’t have a
power down feature.
If we set the two PD equations equal to each other, we
MAX
can solve for R :
L
V
× (V - V
)
OUT
OUT
S
R
= ---------------------------------------------------------------------------------------------
L
T
- T
JMAX
AMAX
--------------------------------------------
- (V × I
)
SMAX
S
N × θ
Short Circuit Current Limit
JA
The EL5144 series amplifiers do not have internal short
circuit protection circuitry. Short circuit current of 90mA
sourcing and 65mA sinking typically will flow if the output is
trying to drive high or low but is shorted to half way between
the rails. If an output is shorted indefinitely, the power
dissipation could easily increase such that the part will be
destroyed. Maximum reliability is maintained if the output
current never exceeds ±50mA. This limit is set by internal
metal interconnect limitations. Obviously, short circuit
conditions must not remain or the internal metal connections
will be destroyed.
Assuming worst case conditions of T = +85°C,
A
V
= V /2V, V = 5.5V, and I = 8.8mA per amplifier,
OUT
S
S
SMAX
below is a table of all packages and the minimum RL
allowed.
PART
PACKAGE
SOT23-5
SOIC-8
MINIMUM R
L
EL5144CW
EL5146CS
EL5146CN
EL5244CS
EL5244CN
EL5244CY
EL5246CY
EL5246CS
EL5246CN
EL5444CU
EL5444CS
EL5444CN
37
21
14
48
30
69
69
34
23
139
85
51
PDIP-8
SOIC-8
Power Dissipation
PDIP-8
With the high output drive capability of the EL5144 series
amplifiers, it is possible to exceed the 150°C Absolute
Maximum junction temperature under certain load current
conditions. Therefore, it is important to calculate the
maximum junction temperature for the application to
determine if load conditions or package type need to be
modified for the amplifier to remain in the safe operating
area.
MSOP-8
MSOP-10
SOIC-14
PDIP-14
QSOP-16
SOIC-14
PDIP-14
The maximum power dissipation allowed in a package is
determined according to:
T
- T
AMAX
EL5144 Series Comparator Application
JMAX
PD
= --------------------------------------------
MAX
θ
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 3 shows
the amplifier implemented as a comparator. Figure 4 is a
JA
where:
T
T
= Maximum junction temperature
= Maximum ambient temperature
JMAX
AMAX
θ
= Thermal resistance of the package
JA
PD
= Maximum power dissipation in the package
MAX
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:
V
OUT
R
L
---------------
PD
= N × V × I
+ (V - V ) ×
OUT
MAX
S
SMAX
S
where:
N = Number of amplifiers in the package
V = Total supply voltage
S
I
= Maximum supply current per amplifier
SMAX
V
= Maximum output voltage of the application
OUT
R = Load resistance tied to ground
L
17
EL5144, EL5146, EL5244, EL5246, EL5444
graph of propagation delay vs. overdrive as a square wave is
presented at the input of the comparator.
directly together. Isolation resistors at each output are not
necessary.
+5V
V
3V
10MHz
1
IN
1
2
3
4
8
7
6
5
1
2
3
4
5
6
7
14
13
12
11
10
9
PP
EL5146
0.1µF
V
OUT
-
+
+
–
-
+
V
IN
V
OUT
+2.5V
R
L
EL5246
+5V
Select
FIGURE 3.
4.7µF 0.1µF
+
-
150Ω
V
2.4V
5MHz
2
IN
Propagation Delay vs. Overdrive for Amplifier
Used as a Comparator
PP
8
1000
100
10
FIGURE 5.
5V
Negative Going Signal
V
OUT
Positive Going Signal
0V
5V
0V
0.01
0.1
1.0
Overdrive (V)
Select
FIGURE 4.
FIGURE 6.
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 5 shows an EL5246 with its
outputs tied together, driving a back terminated 75Ω video
Free Running Oscillator Application
Figure 7 is an EL5144 configured as a free running oscillator.
To first order, R
and C determine the frequency of
OSC
OSC
oscillation according to:
0.72
load. A 3V
and a 2.4V
10MHz sine wave is applied at Amp A input,
5MHz square wave to Amp B. Figure 6
P-P
P-P
F
= ---------------------------------------
OSC
R
× C
OSC
shows the SELECT signal that is applied, and the resulting
output waveform at V . Observe the break-before-make
OSC
OUT
operation of the multiplexing. Amp A is on and V
is being
For rail to rail output swings, maximum frequency of
oscillation is around 15MHz. If reduced output swings are
acceptable, 25MHz can be achieved. Figure 8 shows the
IN1
passed through to the output of the amplifier. Then Amp A
turns off in about 10ns. The output decays to ground with an
R C time constants. 500ns later, Amp B turns on and V
IN2
L
L
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
18
EL5144, EL5146, EL5244, EL5246, EL5444
oscillator for R
OSC
= 510Ω, C
= 240pF and
OSC
F
= 6MHz.
OSC
470K
+5V
1
5
470K
470K
0.1µF
R
C
OSC
2
3
4
OSC
FIGURE 7.
5V
V
OUT
0V
FIGURE 8.
5V
0V
FIGURE 9.
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
19
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