EL5193ACWZ-T7 [INTERSIL]
Single 300MHz Current Feedback Amplifier with Enable; 单300MHz的电流反馈放大器启用
| 型号： | EL5193ACWZ-T7 |
| 厂家： | 
Intersil |
| 描述： | Single 300MHz Current Feedback Amplifier with Enable |
| 文件： | 总19页 (文件大小：1096K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EL5193, EL5193A
®
ata Sheet
April 24, 2006
FN7182.3
Single 300MHz Current Feedback
Amplifier with Enable
Features
• 300MHz -3dB bandwidth
The EL5193 and EL5193A are current feedback amplifiers
with a bandwidth of 300MHz. This makes these amplifiers
ideal for today’s high speed video and monitor applications.
• 4mA supply current
• Single and dual supply operation, from 5V to 10V supply
span
With a supply current of just 4mA and the ability to run from
a single supply voltage from 5V to 10V, these amplifiers are
also ideal for hand held, portable or battery-powered
equipment.
• Fast enable/disable (EL5193A only)
• Available in SOT-23 packages
• Dual (EL5293) and triple (EL5393) available
• High speed, 1GHz product available (EL5193)
The EL5193A also incorporates an enable and disable
function to reduce the supply current to 100µA typical per
amplifier. Allowing the CE pin to float or applying a low logic
level will enable the amplifier.
• High speed, 6mA, 600MHz product available (EL5192,
EL5292, and EL5392)
• Pb-free plus anneal available (RoHS compliant)
The EL5193 is offered in the 5 Ld SOT-23 package and the
EL5193A is available in the 6 Ld SOT-23 as well as the
industry-standard 8 Ld SO packages. Both operate over the
industrial temperature range of -40°C to +85°C.
Applications
• Battery powered equipment
• Hand held, portable devices
• Video amplifiers
Ordering Information
PART
TAPE &
REEL
PKG.
PART NUMBER MARKING
PACKAGE DWG. #
• Cable drivers
EL5193CW-T7
P
7”
5 Ld SOT-23 MDP0038
5 Ld SOT-23 MDP0038
5Ld SOT-23 MDP0038
• RGB amplifiers
(3K pcs)
• Test equipment
EL5193CW-T7A
P
7”
(250 pcs)
• Instrumentation
EL5193CWZ-T7 BAAW
(Note)
7”
• Current to voltage converters
(3K pcs) (Pb-free)
EL5193CWZ-T7A BAAW
(Note)
7”
5Ld SOT-23 MDP0038
Pinouts
(250 pcs) (Pb-free)
EL5193ACW-T7
P
7”
6 Ld SOT-23 MDP0038
EL5193A
(8 LD SO)
TOP VIEW
(3K pcs)
EL5193ACWZ-T7 BAAV
(Note)
7”
6Ld SOT-23 MDP0038
(3K pcs) (Pb-free)
EL5193ACS
5193ACS
5193ACS
-
7”
13”
-
8 Ld SO
8 Ld SO
8 Ld SO
MDP0027
MDP0027
MDP0027
MDP0027
NC
IN-
1
2
3
4
8
7
6
5
CE
EL5193ACS-T7
EL5193ACS-T13 5193ACS
VS+
OUT
NC
-
+
EL5193ACSZ
(Note)
5193ACSZ
8 Ld SO
(Pb-free)
IN+
VS-
EL5193ACSZ-T7 5193ACSZ
(Note)
7”
8 Ld SO
(Pb-free)
MDP0027
MDP0027
EL5193
(5 LD SOT-23)
TOP VIEW
EL5193ACSZ-T13 5193ACSZ
(Note)
13”
8 Ld SO
(Pb-free)
EL5193A
(6 LD SOT-23)
TOP VIEW
NOTE: Intersil Pb-free plus anneal 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.
OUT
VS-
IN+
1
2
3
6
5
4
VS+
CE
OUT
VS-
IN+
1
2
3
5
4
VS+
IN-
+
-
+
-
IN-
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004, 2006. All Rights Reserved.
1
All other trademarks mentioned are the property of their respective owners.
EL5193, EL5193A
Absolute Maximum Ratings (T = 25°C)
A
Supply Voltage between V + and V -. . . . . . . . . . . . . . . . . . . . .11V
Pin Voltages. . . . . . . . . . . . . . . . . . . . . . . . . V - -0.5V to V + +0.5V
S S
S
S
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 50mA
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .125°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Ambient 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, V - = -5V, R = 750Ω for A = 1, R = 400Ω for A = 2, R = 150Ω, T = 25°C unless otherwise
S
S
F
V
F
V
L
A
specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
AC PERFORMANCE
BW
-3dB Bandwidth
A
A
= +1
= +2
300
200
20
MHz
MHz
MHz
V/µs
ns
V
V
BW1
SR
0.1dB Bandwidth
Slew Rate
V
V
= -2.5V to +2.5V, A = +2
2300
2600
12
O
V
t
0.1% Settling Time
= -2.5V to +2.5V, A = -1
OUT V
S
e
Input Voltage Noise
IN- Input Current Noise
IN+ Input Current Noise
Differential Gain Error (Note 1)
4.4
nV/√Hz
pA/√Hz
pA/√Hz
%
N
i -
17
N
i +
N
50
dG
dP
A
A
= +2
0.03
0.04
V
V
Differential Phase Error (Note 1)
= +2
°
DC PERFORMANCE
V
Offset Voltage
-10
1
5
10
mV
OS
T V
Input Offset Voltage Temperature
Coefficient
Measured from T
to T
MAX
µV/°C
C
OS
MIN
R
Transimpedance
300
500
kΩ
OL
INPUT CHARACTERISTICS
CMIR
Common Mode Input Range
±3
42
-6
±3.3
50
V
CMRR
-ICMR
Common Mode Rejection Ratio
dB
- Input Current Common Mode
Rejection
6
µA/V
+I
+ Input Current
- Input Current
-60
-30
1
1
80
30
µA
µA
kΩ
pF
IN
-I
IN
R
Input Resistance
Input Capacitance
45
0.5
IN
IN
C
OUTPUT CHARACTERISTICS
V
Output Voltage Swing
R = 150Ω to GND
±3.4
±3.8
95
±3.7
±4.0
120
V
V
O
L
R = 1kΩ to GND
L
I
Output Current
R = 10Ω to GND
mA
OUT
L
SUPPLY
I
I
Supply Current - Enabled
Supply Current - Disabled
No load, V = 0V
IN
3
4
5
mA
µA
SON
No load, V = 0V
IN
100
150
SOFF
2
EL5193, EL5193A
Electrical Specifications V + = +5V, V - = -5V, R = 750Ω for A = 1, R = 400Ω for A = 2, R = 150Ω, T = 25°C unless otherwise
S
S
F
V
F
V
L
A
specified. (Continued)
PARAMETER
PSRR
DESCRIPTION
CONDITIONS
DC, V = ±4.75V to ±5.25V
MIN
55
TYP
MAX
UNIT
dB
Power Supply Rejection Ratio
75
S
-IPSR
- Input Current Power Supply
Rejection
DC, V = ±4.75V to ±5.25V
-2
2
µA/V
S
ENABLE (EL5193A ONLY)
t
t
I
I
Enable Time
40
600
0.8
0
ns
ns
µA
µA
V
EN
Disable Time
DIS
CE Pin Input High Current
CE Pin Input Low Current
CE = V +
6
IHCE
ILCE
S
CE = V -
-0.1
S
V
CE Input High Voltage for Power-
down
V + -1
S
IHCE
V
CE Input Low Voltage for Power-
down
V + -3
V
ILCE
S
NOTE:
1. Standard NTSC test, AC signal amplitude = 286mV
, f = 3.58MHz
P-P
3
EL5193, EL5193A
Typical Performance Curves
Non-Inverting Frequency Response (Gain)
SOT-23 Package
Non-Inverting Frequency Response (Phase)
SOT-23 Package
6
90
0
A
=1
V
A
A
=1
=2
V
2
-2
A
=2
V
V
-90
-180
-270
-360
A
=5
V
A
=5
V
A
=10
V
-6
A
=10
V
-10
-14
R =750Ω
L
R =750Ω
F
R =150Ω
L
F
R =150Ω
1M
10M
100M
Frequency (Hz)
1G
1M
10M
100M
Frequency (Hz)
1G
1G
1G
Inverting Frequency Response (Gain)
SOT-23 Package
Inverting Frequency Response (Phase)
6
2
90
0
A
=-1
V
A
=-1
A =-2
V
V
V
-2
-90
A
A
=-2
=-3
V
A
=-3
V
-6
-180
-270
-360
-10
R =500Ω
L
R =500Ω
F
F
R =150Ω
R =150Ω
L
-14
1M
10M
100M
Frequency (Hz)
1G
1M
10M
100M
Frequency (Hz)
Frequency Response for Various C
-
Frequency Response for Various R
L
IN
10
6
6
2
R =100Ω
R =150Ω
L
L
2pF added
0pF added
1pF added
R =500Ω
2
-2
L
-2
-6
-10
-6
-10
-14
A
=2
V
R =500Ω
A
=2
F
V
R =150Ω
R =500Ω
L
F
1M
10M
100M
Frequency (Hz)
1G
1M
10M
100M
Frequency (Hz)
4
EL5193, EL5193A
Typical Performance Curves (Continued)
Frequency Response for Various C
Frequency Response for Various R
F
L
14
10
6
6
2
A
=2
V
33pF
340Ω
475Ω
620Ω
R =150Ω
L
R =R =500Ω
F
G
22pF
15pF
-2
750Ω
2
-6
1.2kΩ
8pF
0pF
-2
-6
-10
-14
A
R
=2
V
=R
G
F
R =150Ω
L
1M
10M
100M
Frequency (Hz)
1G
1M
10M
100M
Frequency (Hz)
1G
1G
1G
Group Delay vs Frequency
Frequency Response for Various Common-Mode Input
Voltages
3.5
3
6
2
V
=3V
V
=0V
CM
CM
A
=2
V
R =500Ω
F
2.5
2
-2
V
=-3V
CM
1.5
1
-6
A
=1
V
R =750Ω
F
-10
A
=2
V
0.5
R =500Ω
F
R =150Ω
L
0
1M
-14
1M
10M
100M
Frequency (Hz)
1G
10M
100M
Frequency (Hz)
Transimpedance (ROL) vs Frequency
Phase
PSRR and CMRR vs Frequency
10M
1M
20
0
0
PSRR+
-90
100k
10k
1k
-20
-40
-60
-80
PSRR-
-180
-270
-360
Gain
CMRR
100
1k
10k
100k
1M
10M
100M
1G
10k
100k
1M
10M
100M
Frequency (Hz)
Frequency (Hz)
5
EL5193, EL5193A
Typical Performance Curves (Continued)
-3dB Bandwidth vs Supply Voltage for Non-Inverting Gains
-3dB Bandwidth vs Supply Voltage for Inverting Gains
400
350
300
250
200
150
100
50
250
200
150
100
50
R =750Ω
F
A
=1
R =150Ω
V
L
A
=-1
V
A
A
=-2
=-5
V
A
A
=2
=5
V
V
V
R =500Ω
F
A
=10
9
V
R =150Ω
L
0
5
0
6
7
8
10
10
1G
5
6
7
8
9
10
Total Supply Voltage (V)
Total Supply Voltage (V)
Peaking vs Supply Voltage for Non-Inverting Gains
Peaking vs Supply Voltage for Inverting Gains
4
3.5
3
2.5
2
R =750Ω
R =500Ω
R =150Ω
F
F
L
R =150Ω
A
=1
L
V
2.5
2
1.5
1
A
A
=-1
=-2
V
1.5
1
A
=2
V
V
0.5
0.5
A
=10
V
0
5
0
5
6
7
8
9
6
7
8
9
10
Total Supply Voltage (V)
Total Supply Voltage (V)
Non-inverting Frequency Response (Gain)
SO8 Package
Non-Inverting Frequency Response (Phase)
SO8 Package
6
2
90
0
A
=1
A =2
V
V
A
A
=1
=2
V
V
-2
-90
A
=5
V
A
=5
V
-6
-180
-270
-360
A
=10
V
A
=10
V
-10
-14
R =750Ω
R =750Ω
F
R =150Ω
L
F
R =150Ω
L
1M
10M
100M
Frequency (Hz)
1M
10M
100M
Frequency (Hz)
1G
6
EL5193, EL5193A
Typical Performance Curves (Continued)
Inverting Frequency Response (Gain)
SO8 Package
Inverting Frequency Response (Phase)
SO8 Package
6
2
90
0
A
A
=-1
=-2
V
A
=-1
A =-2
V
V
V
V
-2
-90
A
=-5
A
=-5
V
-6
-180
-270
-360
-10
-14
R =500Ω
R =500Ω
F
R =150Ω
L
F
R =150Ω
L
1M
10M
100M
Frequency (Hz)
1G
160
160
1M
10M
100M
Frequency (Hz)
1G
160
10M
-3dB Bandwidth vs Temperature for Non-Inverting Gains
-3dB Bandwidth vs Temperature for Inverting Gains
500
400
300
200
100
0
250
200
150
100
50
R =750Ω
F
R =150Ω
L
A
A
=-1
=-2
V
A
=1
V
V
A
A
=2
=5
V
A
=-5
V
V
R =500Ω
F
R =150Ω
L
A
=10
10
V
0
-40
-40
60
110
10
60
110
Ambient Temperature (°C)
Ambient Temperature (°C)
Peaking vs Temperature
Voltage and Current Noise vs Frequency
2.5
2
1k
100
10
R =150Ω
L
A
=1
V
1.5
1
i +
n
i -
n
0.5
0
e
n
A
=-1
V
-0.5
1
100
-40
10
60
110
1k
10k
100k
1M
Frequency (Hz)
Ambient Temperature (°C)
7
EL5193, EL5193A
Typical Performance Curves (Continued)
Closed Loop Output Impedance vs Frequency
Supply Current vs Supply Voltage
100
10
10
8
1
6
0.1
4
0.01
0.001
2
0
100
1k
10k
100k
1M
10M
100M
1G
100
1
0
2
4
6
8
10
12
Frequency (Hz)
Supply Voltage (V)
2nd and 3rd Harmonic Distortion vs Frequency
Two-Tone 3rd Order Input Referred Intermodulation Intercept (IIP3)
-20
-30
-40
-50
-60
-70
-80
-90
25
20
15
10
5
A
V
L
=+2
A =+2
V
V
=2V
R =150Ω
L
OUT
R =100Ω
P-P
2nd Order
Distortion
3rd Order
Distortion
0
-5
A
=+2
V
R =100Ω
L
-10
1
10
Frequency (MHz)
10
100
Frequency (MHz)
Differential Gain/Phase vs DC Input Voltage at 3.58MHz
Differential Gain/Phase vs DC Input Voltage at 3.58MHz
0.03
0.02
0.01
0
0.04
0.03
0.02
0.01
0
A
=2
A =1
V
V
R =R =500Ω
R =750Ω
F
R =500Ω
L
dP
dG
F
L
G
dP
dG
R =150Ω
-0.01
-0.02
-0.03
-0.04
-0.05
-0.01
-0.02
-0.03
-0.04
-1
-0.5
0
0.5
-1
-0.5
0
0.5
1
DC Input Voltage
DC Input Voltage
8
EL5193, EL5193A
Typical Performance Curves (Continued)
Output Voltage Swing vs Frequency
THD<1%
Output Voltage Swing vs Frequency
THD<0.1%
10
8
10
8
R =500Ω
L
R =500Ω
L
R =150Ω
L
6
6
R =150Ω
L
4
4
2
2
A
=2
A =2
V
V
0
0
1
10
Frequency (MHz)
100
1
10
100
Frequency (MHz)
Small Signal Step Response
Large Signal Step Response
V
=±5V
V =±5V
S
S
R =150Ω
A
R =R =500Ω
R =150Ω
L
L
V
=2
A =2
V
R =R =500Ω
F G
F
G
200mV/div
1V/div
10ns/div
10ns/div
Settling Time vs Settling Accuracy
Transimpedance (RoI) vs Temperature
25
20
15
10
5
625
600
575
550
525
A
=2
V
R =R =500Ω
F
G
R =150Ω
L
V
=5V output
STEP P-P
0
0.01
0.1
1
-40
10
60
110
160
Settling Accuracy (%)
Die Temperature (°C)
9
EL5193, EL5193A
Typical Performance Curves (Continued)
PSRR and CMRR vs Temperature
ICMR and IPSR vs Temperature
90
80
70
60
50
40
30
20
10
2
1.5
1
PSRR
CMRR
110
ICMR+
IPSR
0.5
0
ICMR-
-0.5
-40
10
60
160
160
160
-40
10
60
110
160
160
160
Die Temperature (°C)
Die Temperature (°C)
Offset Voltage vs Temperature
Input Current vs Temperature
2
1
60
40
20
0
IB-
0
-20
-40
-60
IB+
-1
-2
-40
10
60
Die Temperature (°C)
110
-40
10
60
Temperature (°C)
110
Positive Input Resistance vs Temperature
Supply Current vs Temperature
60
50
40
30
20
10
0
5
4
3
2
1
0
-40
10
60
110
-40
10
60
110
Temperature (°C)
Temperature (°C)
10
EL5193, EL5193A
Typical Performance Curves (Continued)
Positive Output Swing vs Temperature for Various Loads
Negative Output Swing vs Temperature for Various Loads
4.2
4.1
4
-3.5
-3.6
-3.7
-3.8
-3.9
-4
150Ω
1kΩ
3.9
3.8
3.7
3.6
3.5
150Ω
1kΩ
-4.1
-4.2
-40
10
60
110
160
-40
10
60
110
160
Temperature (°C)
Temperature (°C)
Output Current vs Temperature
Slew Rate vs Temperature
130
125
120
115
4000
3500
3000
2500
Sink
Source
A
=2
V
F
L
R =R =500Ω
R =150Ω
G
-40
10
60
110
160
-40
10
60
110
160
Die Temperature (°C)
Die Temperature (°C)
Enable Response
Disable Response
500mV/div
500mV/div
5V/div
5V/div
20ns/div
400ns/div
11
EL5193, EL5193A
Typical Performance Curves (Continued)
JEDEC JESD51-7 HIGH EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
JEDEC JESD51-7 HIGH EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
1.4
1.2
1
0.5
0.45
0.4
435mW
909mW
0.35
0.3
SOT23-5/6
SO8
=110°C/W
0.8
0.6
0.4
0.2
0
θ
=230°C/W
JA
θ
JA
0.25
0.2
0.15
0.1
0.05
0
0
25
50
75 85 100
125
150
0
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (°C)
JEDEC JESD51-3 LOW EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
JEDEC JESD51-3 LOW EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
0.45
0.4
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
391mW
0.35
0.3
625mW
SO8
θ
=160°C/W
0.25
0.2
JA
0.15
0.1
0.05
0
0
25
50
75 85 100
125
150
0
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
AMBIENT TEMPERATURE (°C)
12
EL5193, EL5193A
Pin Descriptions
8 LD SO
5 LD SOT-23 6 LD SOT-23
PIN NAME
FUNCTION
Not connected
EQUIVALENT CIRCUIT
1, 5
2
NC
IN-
4
4
Inverting input
V
+
S
IN+
IN-
V
-
S
Circuit 1
3
4
6
3
2
1
3
2
1
IN+
Non-inverting input
Negative supply
Output
(See circuit 1)
V -
S
OUT
V
+
S
OUT
V
-
S
Circuit 2
7
8
5
6
5
V +
S
Positive supply
Chip enable
CE
V
+
S
CE
V
-
S
Circuit 3
13
EL5193, EL5193A
enabled when CE is 2V or less, and disabled when CE is
Applications Information
above 4V. Although the logic levels are not standard TTL,
this choice of logic voltages allows the EL5193A to be
enabled by tying CE to ground, even in 5V single supply
applications. The CE pin can be driven from CMOS outputs.
Product Description
The EL5193 is a current-feedback operational amplifier that
offers a wide -3dB bandwidth of 300MHz and a low supply
current of 4mA per amplifier. The EL5193 works with supply
voltages ranging from a single 5V to 10V and they are also
capable of swinging to within 1V of either supply on the
output. Because of their current-feedback topology, the
EL5193 does not have the normal gain-bandwidth product
associated with voltage-feedback operational amplifiers.
Instead, its -3dB bandwidth to remain relatively constant as
closed-loop gain is increased. This combination of high
bandwidth and low power, together with aggressive pricing
make the EL5193 the ideal choice for many low-power/high-
bandwidth applications such as portable, handheld, or
battery-powered equipment.
Capacitance at the Inverting Input
Any manufacturer’s high-speed voltage- or current-feedback
amplifier can be affected by stray capacitance at the
inverting input. For inverting gains, this parasitic capacitance
has little effect because the inverting input is a virtual
ground, but for non-inverting gains, this capacitance (in
conjunction with the feedback and gain resistors) creates a
pole in the feedback path of the amplifier. This pole, if low
enough in frequency, has the same destabilizing effect as a
zero in the forward open-loop response. The use of large-
value feedback and gain resistors exacerbates the problem
by further lowering the pole frequency (increasing the
possibility of oscillation).
For varying bandwidth needs, consider the EL5191 with
1GHz on a 9mA supply current or the EL5192 with 600MHz
on a 6mA supply current. Versions include single, dual, and
triple amp packages with 5 Ld SOT-23, 16 Ld QSOP, and 8
Ld or 16 Ld SO outlines.
The EL5193 has been optimized with a 475Ω feedback
resistor. With the high bandwidth of these amplifiers, these
resistor values might cause stability problems when
combined with parasitic capacitance, thus ground plane is
not recommended around the inverting input pin of the
amplifier.
Power Supply Bypassing and Printed Circuit
Board Layout
As with any high frequency device, good printed circuit
board layout is necessary for optimum performance. Low
impedance ground plane construction is essential. Surface
mount components are recommended, but if leaded
components are used, lead lengths should be as short as
possible. The power supply pins must be well bypassed to
reduce the risk of oscillation. The combination of a 4.7µF
tantalum capacitor in parallel with a 0.01µF capacitor has
been shown to work well when placed at each supply pin.
Feedback Resistor Values
The EL5193 has been designed and specified at a gain of +2
with R approximately 500Ω. This value of feedback resistor
F
gives 200MHz of -3dB bandwidth at A =2 with 2dB of
V
peaking. With A =-2, an R of approximately 500Ω gives
V
F
175MHz of bandwidth with 0.2dB of peaking. Since the
EL5193 is a current-feedback amplifier, it is also possible to
change the value of R to get more bandwidth. As seen in
F
the curve of Frequency Response for Various R and R ,
F
G
For good AC performance, parasitic capacitance should be
kept to a minimum, especially at the inverting input. (See the
Capacitance at the Inverting Input section) Even when
ground plane construction is used, it should be removed
from the area near the inverting input to minimize any stray
capacitance at that node. Carbon or Metal-Film resistors are
acceptable with the Metal-Film resistors giving slightly less
peaking and bandwidth because of additional series
inductance. Use of sockets, particularly for the SO package,
should be avoided if possible. Sockets add parasitic
inductance and capacitance which will result in additional
peaking and overshoot.
bandwidth and peaking can be easily modified by varying
the value of the feedback resistor.
Because the EL5193 is a current-feedback amplifier, its
gain-bandwidth product is not a constant for different closed-
loop gains. This feature actually allows the EL5193 to
maintain about the same -3dB bandwidth. As gain is
increased, bandwidth decreases slightly while stability
increases. Since the loop stability is improving with higher
closed-loop gains, it becomes possible to reduce the value
of R below the specified 475Ω and still retain stability,
F
resulting in only a slight loss of bandwidth with increased
closed-loop gain.
Disable/Power-Down
Supply Voltage Range and Single-Supply
Operation
The EL5193A amplifier can be disabled placing its output in
a high impedance state. When disabled, the amplifier supply
current is reduced to < 150µA. The EL5193A is disabled
when its CE pin is pulled up to within 1V of the positive
supply. Similarly, the amplifier is enabled by floating or
pulling its CE pin to at least 3V below the positive supply. For
±5V supply, this means that an EL5193A amplifier will be
The EL5193 has been designed to operate with supply
voltages having a span of greater than 5V and less than
10V. In practical terms, this means that the EL5193 will
operate on dual supplies ranging from ±2.5V to ±5V. With
single-supply, the EL5193 will operate from 5V to 10V.
14
EL5193, EL5193A
As supply voltages continue to decrease, it becomes
Current Limiting
necessary to provide input and output voltage ranges that
can get as close as possible to the supply voltages. The
EL5193 has an input range which extends to within 2V of
either supply. So, for example, on +5V supplies, the EL5193
has an input range which spans ±3V. The output range of
the EL5193 is also quite large, extending to within 1V of the
supply rail. On a ±5V supply, the output is therefore capable
of swinging from -4V to +4V. Single-supply output range is
larger because of the increased negative swing due to the
external pull-down resistor to ground.
The EL5193 has no internal current-limiting circuitry. If the
output is shorted, it is possible to exceed the Absolute
Maximum Rating for output current or power dissipation,
potentially resulting in the destruction of the device.
Power Dissipation
With the high output drive capability of the EL5193, it is
possible to exceed the 125°C Absolute Maximum junction
temperature under certain very high load current conditions.
Generally speaking when R falls below about 25Ω, it is
L
important to calculate the maximum junction temperature
Video Performance
(T
) for the application to determine if power supply
JMAX
For good video performance, an amplifier is required to
maintain the same output impedance and the same
frequency response as DC levels are changed at the output.
This is especially difficult when driving a standard video load
of 150Ω, because of the change in output current with DC
level. Previously, good differential gain could only be
achieved by running high idle currents through the output
transistors (to reduce variations in output impedance.)
These currents were typically comparable to the entire 4mA
supply current of each EL5193 amplifier. Special circuitry
has been incorporated in the EL5193 to reduce the variation
of output impedance with current output. This results in dG
and dP specifications of 0.03% and 0.04°, while driving
150Ω at a gain of 2.
voltages, load conditions, or package type need to be
modified for the EL5193 to remain in the safe operating area.
These parameters are calculated as follows:
T
= T
+ (θ × n × PD
)
MAX
JMAX
MAX
JA
where:
T
= Maximum ambient temperature
MAX
θ
= Thermal resistance of the package
JA
n = Number of amplifiers in the package
PD = Maximum power dissipation of each amplifier in
MAX
the package
Video performance has also been measured with a 500Ω
load at a gain of +1. Under these conditions, the EL5193 has
dG and dP specifications of 0.03% and 0.04°.
PD for each amplifier can be calculated as follows:
MAX
V
OUTMAX
----------------------------
PD
= (2 × V × I
) + (V - V ) ×
OUTMAX
MAX
S
SMAX
S
R
L
Output Drive Capability
In spite of its low 4mA of supply current, the EL5193 is
capable of providing a minimum of ±95mA of output current.
With a minimum of ±95mA of output drive, the EL5193 is
capable of driving 50Ω loads to both rails, making it an
excellent choice for driving isolation transformers in
telecommunications applications.
where:
V = Supply voltage
S
I
= Maximum supply current of 1A
SMAX
V
= Maximum output voltage (required)
OUTMAX
Driving Cables and Capacitive Loads
R = Load resistance
L
When used as a cable driver, double termination is always
recommended for reflection-free performance. For those
applications, the back-termination series resistor will
decouple the EL5193 from the cable and allow extensive
capacitive drive. However, other applications may have high
capacitive loads without a back-termination resistor. In these
applications, a small series resistor (usually between 5Ω and
50Ω) can be placed in series with the output to eliminate
most peaking. The gain resistor (R ) can then be chosen to
G
make up for any gain loss which may be created by this
additional resistor at the output. In many cases it is also
possible to simply increase the value of the feedback
resistor (R ) to reduce the peaking.
F
15
EL5193, EL5193A
Typical Application Circuits
Inverting 200mA Output Current Distribution Amplifier
0.1µF
+5V
IN+
V
+
S
S
OUT
IN-
V
-
0.1µF
-5V
500Ω
5Ω
0.1µF
V
OUT
+5V
IN+
V
V
+
S
5Ω
OUT
IN-
-
S
0.1µF
-5V
500Ω
500Ω
V
IN
Fast-Settling Precision Amplifier
500Ω
500Ω
0.1µF
+5V
IN+
V
V
+
S
OUT
IN-
-
S
0.1µF
500Ω
500Ω
-5V
0.1µF
+5V
IN+
V
V
+
S
V
IN
OUT
V
OUT
IN-
-
S
0.1µF
-5V
16
EL5193, EL5193A
Typical Application Circuits
Differential Line Driver/Receiver
0.1µF
+5V
0.1µF
+5V
IN+
IN+
V
V
+
V
V
+
S
S
S
OUT
OUT
IN-
IN-
-
-
S
0.1µF
0.1µF
-5V
-5V
0.1µF
500Ω
250Ω
250Ω
500Ω
500Ω
V
V
+
OUT
0.1µF
1kΩ
1kΩ
+5V
IN+
240Ω
0.1µF
+5V
IN+
V
V
+
S
0.1µF
OUT
V
V
+
S
-
OUT
IN-
OUT
V
OUT
-
S
IN-
0.1µF
-
S
-5V
0.1µF
-5V
500Ω
500Ω
V
IN
500Ω
500Ω
Transmitter
Receiver
17
EL5193, EL5193A
SO Package Outline Drawing
18
EL5193, EL5193A
SOT-23 Package Outline Drawing
NOTE: The package drawing shown here may not be the latest version. To check the latest revision, please refer to the Intersil website at
http://www.intersil.com/design/packages/index.asp
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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