DATASHEET

D
NE W
R
O
®
5165
ED F
END 5164/EL
M
M
L
O
R EC SEE E
NOT
Data Sheet
E SI G
600MHz Current Feedback Amplifier with
Enable
The EL5192 and EL5192A are current feedback amplifiers
with a very high bandwidth of 600MHz. This makes these
amplifiers ideal for todays high speed video and monitor
applications.
With a supply current of just 6mA and the ability to run from
a single supply voltage from 5V to 10V, the amplifiers are
also ideal for hand held, portable or battery-powered
equipment.
The EL5192A 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.
The EL5192 is offered in the 5 Ld SOT-23 package and the
EL5192A is available in the 6 Ld SOT-23 as well as the
industry-standard 8 Ld SOIC packages. Both operate over
the industrial temperature range of -40°C to +85°C.
NS
EL5192, EL5192A
May 16, 2007
FN7181.3
Features
• 600MHz -3dB bandwidth
• 6mA supply current
• Single and dual supply operation, from 5V to 10V supply
span
• Fast enable/disable (EL5192A only)
• Available in SOT-23 packages
• Dual (EL5292) and triple (EL5392) available
• High speed, 1GHz product available (EL5191)
• Low power, 4mA, 300MHz product available (EL5193,
EL5293, and EL5393)
• Pb-Free plus anneal available (RoHS compliant)
Applications
• Video amplifiers
• Cable drivers
• RGB amplifiers
• Test equipment
• Instrumentation
• Current to voltage converters
Pinouts
EL5192A
(8 LD SOIC)
TOP VIEW
NC 1
IN- 2
IN+ 3
VS- 4
8 CE
+
7 VS+
6 OUT
5 NC
EL5192
(5 LD SOT-23)
TOP VIEW
EL5192A
(6 LD SOT-23)
TOP VIEW
OUT 1
VS- 2
IN+ 3
1
+ -
6 VS+
OUT 1
5 CE
VS- 2
4 IN-
IN+ 3
5 VS+
+ 4 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, 2005, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
EL5192, EL5192A
Ordering Information
PART NUMBER
PART MARKING
TAPE & REEL
PACKAGE
PKG. DWG. #
EL5192CW-T7
O
7” (3k pcs)
5 Ld SOT-23
MDP0038
EL5192CW-T7A
O
7” (250 pcs)
5 Ld SOT-23
MDP0038
EL5192CWZ-T7 (Note)
BAAT
7” (3k pcs)
5 Ld SOT-23 (Pb-free)
MDP0038
EL5192CWZ-T7A (Note)
BAAT
7” (250 pcs)
5 Ld SOT-23 (Pb-free)
MDP0038
EL5192ACW-T7
O
7” (3k pcs)
6 Ld SOT-23
MDP0038
EL5192ACW-T7A
O
7” (250 pcs)
6 Ld SOT-23
MDP0038
EL5192ACWZ-T7 (Note)
BAAS
7” (3k pcs)
6 Ld SOT-23 (Pb-free)
MDP0038
EL5192ACWZ-T7A (Note)
BAAS
7” (250 pcs)
6 Ld SOT-23 (Pb-free)
MDP0038
EL5192ACS
5192ACS
-
8 Ld SOIC (150 mil)
MDP0027
EL5192ACS-T7
5192ACS
7”
8 Ld SOIC (150 mil)
MDP0027
EL5192ACS-T13
5192ACS
13”
8 Ld SOIC (150 mil)
MDP0027
EL5192ACSZ (Note)
5192ACS Z
-
8 Ld SOIC (150 mil) (Pb-free)
MDP0027
EL5192ACSZ-T7 (Note)
5192ACS Z
7”
8 Ld SOIC (150 mil) (Pb-free)
MDP0027
EL5192ACSZ-T13 (Note)
5192ACS Z
13”
8 Ld SOIC (150 mil) (Pb-free)
MDP0027
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.
2
FN7181.3
May 16, 2007
EL5192, EL5192A
Absolute Maximum Ratings (TA = +25°C)
Thermal Information
Supply Voltage between VS+ and VS- . . . . . . . . . . . . . . . . . . . . . 11V
Pin Voltages . . . . . . . . . . . . . . . . . . . . . . . . . VS- -0.5V to VS+ +0.5V
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
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
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: TJ = TC = TA
Electrical Specifications
PARAMETER
VS+ = +5V, VS- = -5V, RF = 750Ω for AV = 1, RF = 375Ω for AV = 2, RL = 150Ω, TA = +25°C Unless Otherwise
Specified.
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNIT
AC PERFORMANCE
BW
-3dB Bandwidth
AV = +1
600
MHz
AV = +2
300
MHz
25
MHz
2800
V/µs
9
ns
BW1
0.1dB Bandwidth
SR
Slew Rate
VO = -2.5V to +2.5V, AV = +2
tS
0.1% Settling Time
VOUT = -2.5V to +2.5V, AV = -1
eN
Input Voltage Noise
4.1
nV/√Hz
iN-
IN- Input Current Noise
20
pA/√Hz
iN+
IN+ Input Current Noise
50
pA/√Hz
dG
Differential Gain Error (Note 1)
AV = +2
0.015
%
dP
Differential Phase Error (Note 1)
AV = +2
0.04
°
2400
DC PERFORMANCE
VOS
Offset Voltage
TCVOS
Input Offset Voltage Temperature
Coefficient
ROL
Transimpedance
-10
Measured from TMIN to TMAX
1
10
mV
5
µV/°C
200
400
kΩ
INPUT CHARACTERISTICS
CMIR
Common Mode Input Range
±3
±3.3
V
CMRR
Common Mode Rejection Ratio
42
50
dB
-ICMR
- Input Current Common Mode
Rejection
-6
+IIN
+ Input Current
-60
-IIN
- Input Current
-35
RIN
Input Resistance
37
kΩ
CIN
Input Capacitance
0.5
pF
6
µA/V
3
60
µA
2
35
µA
OUTPUT CHARACTERISTICS
VO
IOUT
Output Voltage Swing
RL = 150Ω to GND
±3.4
±3.7
V
RL = 1kΩ to GND
±3.8
±4.0
V
Output Current
RL = 10Ω to GND
95
120
mA
Supply Current - Enabled
No load, VIN = 0V
5
6
SUPPLY
ISON
3
7.5
mA
FN7181.3
May 16, 2007
EL5192, EL5192A
Electrical Specifications
PARAMETER
VS+ = +5V, VS- = -5V, RF = 750Ω for AV = 1, RF = 375Ω for AV = 2, RL = 150Ω, TA = +25°C Unless Otherwise
Specified. (Continued)
DESCRIPTION
CONDITIONS
MIN
ISOFF
Supply Current - Disabled
No load, VIN = 0V
PSRR
Power Supply Rejection Ratio
DC, VS = ±4.75V to ±5.25V
55
-IPSR
- Input Current Power Supply
Rejection
DC, VS = ±4.75V to ±5.25V
-2
TYP
MAX
UNIT
100
150
µA
75
dB
2
µA/V
ENABLE (EL5192A ONLY)
tEN
Enable Time
40
ns
tDIS
Disable Time
600
ns
IIHCE
CE Pin Input High Current
CE = VS+
0.8
6
µA
IILCE
CE Pin Input Low Current
CE = VS-
0
-0.1
µA
VIHCE
CE Input High Voltage for Powerdown
VILCE
CE Input Low Voltage for Powerdown
VS+ -1
V
VS+ -3
V
NOTE:
1. Standard NTSC test, AC signal amplitude = 286mVP-P, f = 3.58MHz
4
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Performance Curves
Non-Inverting Frequency Response (Gain)
SOT-23 Package
Non-Inverting Frequency Response (Phase)
6
90
AV=2
2
0
-2
-90
AV=1
AV=2
Phase (°)
Normalized Magnitude (dB)
AV=1
AV=5
-6
AV=5
AV=10
-180
AV=10
-10
-270
RF=750Ω
RL=150Ω
-14
1M
RF=750Ω
RL=150Ω
10M
100M
-360
1M
1G
10M
Frequency (Hz)
Inverting Frequency Response (Gain)
90
AV=-1
2
AV=-2
AV=-1
0
-2
Phase (°)
Normalized Magnitude (dB)
1G
Inverting Frequency Response (Phase)
6
AV=-5
-6
-10
-90
AV=-2
AV=-5
-180
-270
RF=375Ω
RL=150Ω
-14
1M
RF=375Ω
RL=150Ω
10M
100M
-360
1M
1G
10M
Frequency (Hz)
6
RL=150Ω
2pF added
Normalized Magnitude (dB)
6
1pF added
2
-2
-10
1M
1G
Frequency Response for Various RL
10
-6
100M
Frequency (Hz)
Frequency Response for Various CIN-
Normalized Magnitude (dB)
100M
Frequency (Hz)
0pF added
AV=2
RF=375Ω
RL=150Ω
RL=100Ω
2
RL=500Ω
-2
-6
-10
AV=2
RF=375Ω
10M
100M
Frequency (Hz)
5
1G
-14
1M
10M
100M
1G
Frequency (Hz)
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Performance Curves
(Continued)
Frequency Response for Various CL
Frequency Response for Various RF
14
6
12pF added
6
Normalized Magnitude (dB)
Normalized Magnitude (dB)
250Ω
10
8pF added
2
-2
0pF added
AV=2
RF=375Ω
RL=150Ω
-6
1M
10M
100M
475Ω
-2
620Ω
-6
750Ω
-10
AV=2
RG=RF
RL=150Ω
-14
1M
1G
10M
Frequency (Hz)
100M
1G
Frequency (Hz)
Group Delay vs Frequency
Frequency Response for Various Common-Mode Input
Voltages
3.5
6
VCM=3V
Normalized Magnitude (dB)
3
2.5
Group Delay (ns)
375Ω
2
AV=2
RF=375Ω
2
1.5
1
AV=1
RF=750Ω
0.5
0
1M
10M
100M
-2
VCM=-3V
-6
-10
AV=2
RF=375Ω
RL=150Ω
-14
1M
1G
VCM=0V
2
10M
Frequency (Hz)
100M
1G
Frequency (Hz)
Transimpedance (ROL) vs Frequency
PSRR and CMRR vs Frequency
10M
20
0
Phase
0
100k
-180
10k
Gain
-270
Phase (°)
Magnitude (Ω)
-90
PSRR/CMRR (dB)
1M
PSRR+
-20
PSRR-40
-60
1k
CMRR
-360
100
1k
10k
100k
1M
Frequency (Hz)
6
10M
100M
1G
-80
10k
100k
1M
10M
100M
1G
Frequency (Hz)
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Performance Curves
(Continued)
-3dB Bandwidth vs Supply Voltage for Inverting Gains
-3dB Bandwidth vs Supply Voltage for Non-Inverting Gains
800
350
300
600
AV=1
-3dB Bandwidth (MHz)
-3dB Bandwidth (MHz)
RF=750Ω
RL=150Ω
400
AV=2
200
AV=5
AV=10
AV=-1
250
AV=-2
200
AV=-5
150
100
50
0
RF=375Ω
RL=150Ω
0
5
6
7
8
9
10
5
6
Total Supply Voltage (V)
4
9
10
4
RF=750Ω
RL=150Ω
Peaking (dB)
3
2
1
RF=375Ω
RL=150Ω
AV=-1
AV=1
3
Peaking (dB)
8
Peaking vs Supply Voltage for Inverting Gains
Peaking vs Supply Voltage for Non-Inverting Gains
AV=-2
2
1
AV=2
AV=10
AV=-5
0
0
5
6
7
8
9
5
10
6
7
9
10
Non-inverting Frequency Response (Phase)
SO8 Package
Non-inverting Frequency Response (Gain)
SO8 Package
6
90
2
AV=1
0
AV=1
Phase (°)
-2
AV=2
-6
-10
AV=5
-180
AV=10
-270
AV=10
RF=750Ω
RL=150Ω
10M
100M
Frequency (Hz)
7
AV=2
-90
AV=5
-14
1M
8
Total Supply Voltage (V)
Total Supply Voltage (V)
Normalized Magnitude (dB)
7
Total Supply Voltage (V)
RF=750Ω
RL=150Ω
1G 1.6G
-360
1M
10M
100M
1G
Frequency (Hz)
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Performance Curves
(Continued)
Inverting Frequency Response (Gain)
SO8 Package
Inverting Frequency Response (Phase)
SO8 Package
6
90
AV=-2
0
-2
AV=-5
Phase (°)
Normalized Magnitude (dB)
AV=-1
2
-6
-10
AV=-1
-90
AV=-2
-180
AV=-5
-270
RF=375Ω
RL=150Ω
RF=375Ω
RL=150Ω
-14
1M
10M
100M
-360
1M
1G
10M
Frequency (Hz)
1G
-3dB Bandwidth vs Temperature for Inverting Gains
-3dB Bandwidth vs Temperature for Non-Inverting Gains
500
1400
1200
RF=750Ω
RL=150Ω
AV=1
1000
800
600
400
AV=5
AV=2
AV=10
RF=375Ω
RL=150Ω
AV=-1
400
-3dB Bandwidth (MHz)
-3dB Bandwidth (MHz)
100M
Frequency (Hz)
300
AV=-2
200
AV=-5
100
200
0
-40
10
60
110
0
-40
160
10
60
160
110
Ambient Temperature (°C)
Ambient Temperature (°C)
Peaking vs Temperature
Voltage and Current Noise vs Frequency
1k
2
RL=150Ω
AV=1
Voltage Noise (nV/√Hz)
Current Noise (pA/√Hz)
Peaking (dB)
1.5
1
AV=-1
0.5
AV=-2
100
in+
i n-
10
en
0
AV=2
-0.5
-50
-50
0
Ambient Temperature (°C)
8
50
100
1
100
1k
10k
100k
1M
10M
Frequency (Hz)
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Performance Curves
(Continued)
Supply Current vs Supply Voltage
100
10
10
8
Supply Current (mA)
Output Impedance (Ω)
Closed Loop Output Impedance vs Frequency
1
0.1
0.01
6
4
2
0.001
0
100
1k
100k
10k
1M
10M
100M
1G
0
2
4
Frequency (Hz)
2nd and 3rd Harmonic Distortion vs Frequency
10
12
30
AV=+2
VOUT=2VP-P
RL=100Ω
-40
2nd Order
Distortion
-50
AV=+2
RL=150Ω
25
Input Power Intercept (dBm)
-30
Harmonic Distortion (dBc)
8
Two-Tone 3rd Order
Input Referred Intermodulation Intercept (IIP3)
-20
-60
-70
3rd Order
Distortion
-80
-90
20
15
10
5
0
-5
AV=+2
RL=100Ω
-10
-100
1
10
-15
10
100
100
Frequency (MHz)
200
Frequency (MHz)
Differential Gain/Phase vs DC Input
Voltage at 3.58MHz
Differential Gain/Phase vs DC Input
Voltage at 3.58MHz
0.03
0.03
AV=2
RF=RG=375Ω
RL=150Ω
0.02
0.02
dP
0.01
dG (%) or dP (°)
0.01
dG (%) or dP (°)
6
Supply Voltage (V)
0
dG
-0.01
-0.02
-0.03
AV=1
RF=750Ω
RL=500Ω
dP
0
dG
-0.01
-0.02
-0.03
-0.04
-0.04
-0.05
-0.05
-1
-0.5
0
DC Input Voltage
9
0.5
1
-0.06
-1
-0.5
0
0.5
1
DC Input Voltage
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Performance Curves
(Continued)
Output Voltage Swing vs Frequency
THD<1%
Output Voltage Swing vs Frequency
THD<0.1%
9
10
RL=500Ω
Output Voltage Swing (VPP)
7
RL=150Ω
6
5
4
3
2
1
8
Output Voltage Swing (VPP)
8
RL=150Ω
6
4
2
AV=2
0
AV=2
0
1
10
RL=500Ω
100
1
10
Frequency (MHz)
Small Signal Step Response
Large Signal Step Response
VS=±5V
RL=150Ω
AV=2
RF=RG=375Ω
VS=±5V
RL=150Ω
AV=2
RF=RG=375Ω
200mV/div
1V/div
10ns/div
10ns/div
Settling Time vs Settling Accuracy
Transimpedance (RoI) vs Temperature
25
500
AV=2
RF=RG=375Ω
RL=150Ω
VSTEP=5VP-P output
20
450
15
RoI (kΩ)
Settling Time (ns)
100
Frequency (MHz)
10
400
350
5
0
0.01
0.1
Settling Accuracy (%)
10
1
300
-40
10
60
110
160
Die Temperature (°C)
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Performance Curves
(Continued)
PSRR and CMRR vs Temperature
ICMR and IPSR vs Temperature
90
2.5
80
PSRR
2
ICMR+
1.5
ICMR/IPSR (µA/V)
PSRR/CMRR (dB)
70
60
CMRR
50
40
30
1
IPSR
0.5
0
ICMR-0.5
20
10
-40
10
60
110
-1
-40
160
10
Die Temperature (°C)
60
110
160
Die Temperature (°C)
Offset Voltage vs Temperature
Input Current vs Temperature
3
60
40
2
Input Current (µA)
VOS (mV)
20
1
0
IB0
-20
IB+
-40
-1
-60
-2
-40
10
60
110
-80
-40
160
10
Die Temperature (°C)
160
110
160
Supply Current vs Temperature
50
8
45
7
40
6
Supply Current (mA)
35
RIN+ (kΩ)
110
Temperature (°C)
Positive Input Resistance vs Temperature
30
25
20
15
10
5
4
3
2
1
5
0
-40
60
10
60
Temperature (°C)
11
110
160
0
-40
10
60
Temperature (°C)
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Performance Curves
(Continued)
Positive Output Swing vs Temperature for Various Loads
Negative Output Swing vs Temperature for Various Loads
4.2
-3.5
4.1
-3.6
150Ω
-3.7
3.9
-3.8
VOUT (V)
VOUT (V)
1kΩ
4
3.8
3.7
-3.9
1kΩ
-4
150Ω
3.6
-4.1
3.5
-40
10
50
110
-4.2
-40
160
10
Temperature (°C)
60
Output Current vs Temperature
160
Slew Rate vs Temperature
4600
135
AV=2
RF=RG=375Ω
RL=150Ω
4400
130
4200
Sink
Slew Rate (V/µS)
IOUT (mA)
110
Temperature (°C)
125
Source
4000
3800
3600
3400
120
3200
115
-40
10
60
110
160
3000
-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
Typical Performance Curves
12
400ns/div
(Continued)
FN7181.3
May 16, 2007
EL5192, EL5192A
JEDEC JESD51-7 HIGH EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
0.5
1.2
POWER DISSIPATION (W)
POWER DISSIPATION (W)
1.4
1 909mW
SO8
0.8
θJA=110°C/W
0.6
0.4
0.2
0
0
25
50
75 85 100
125
JEDEC JESD51-7 HIGH EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
0.45
0.4 435mW
0.35
SOT23-5/6
0.3
θJA=230°C/W
0.25
0.2
0.15
0.1
0.05
0
150
0
25
AMBIENT TEMPERATURE (°C)
JEDEC JESD51-3 LOW EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
0.45
0.9
0.8
0.7 625mW
0.6
SO8
θJA=160°C/W
0.5
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
POWER DISSIPATION (W)
POWER DISSIPATION (W)
1
50
0.4
0.3
0.2
0.1
JEDEC JESD51-3 LOW EFFECTIVE
THERMAL CONDUCTIVITY TEST BOARD
391mW
0.4
0.35
θ
0.3
JA
0.25
0.2
SO
=2
T2
3
56 -5-6
°C
/W
0.15
0.1
0.05
0
0
0
25
50
75 85 100
125
AMBIENT TEMPERATURE (°C)
13
150
0
25
50
75 85 100
125
150
AMBIENT TEMPERATURE (°C)
FN7181.3
May 16, 2007
EL5192, EL5192A
Pin Descriptions
8 Ld SOIC
5 Ld SOT-23
6 Ld SOT-23
1, 5
2
4
4
PIN NAME
FUNCTION
NC
Not connected
IN-
Inverting input
EQUIVALENT CIRCUIT
VS+
IN+
IN-
VSCircuit 1
3
3
3
IN+
Non-inverting input
4
2
2
VS-
Negative supply
6
1
1
OUT
Output
(See circuit 1)
VS+
OUT
VSCircuit 2
7
5
8
6
VS+
Positive supply
5
CE
Chip enable
VS+
CE
VSCircuit 3
Applications Information
Product Description
The EL5192 is a current-feedback operational amplifier that
offers a wide -3dB bandwidth of 600MHz and a low supply
current of 6mA per amplifier. The EL5192 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
EL5192 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 EL5192 the ideal choice for many low-power/highbandwidth applications such as portable, handheld, or
battery-powered equipment.
For varying bandwidth needs, consider the EL5191 with 1GHz
on a 9mA supply current or the EL5193 with 300MHz on a 4mA
supply current. Versions include single, dual, and triple amp
packages with 5 Ld SOT-23, 16 Ld QSOP, and 8 Ld or 16 Ld
SOIC outlines.
14
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.
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 SOIC package, should be avoided if
possible. Sockets add parasitic inductance and capacitance
which will result in additional peaking and overshoot.
FN7181.3
May 16, 2007
EL5192, EL5192A
Disable/Power-Down
The EL5192A amplifier can be disabled placing its output in
a high impedance state. When disabled, the amplifier supply
current is reduced to < 150µA. The EL5192A 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 EL5192A amplifier will be
enabled when CE is 2V or less, and disabled when CE is
above 4V. Although the logic levels are not standard TTL,
this choice of logic voltages allows the EL5192A to be
enabled by tying CE to ground, even in 5V single supply
applications. The CE pin can be driven from CMOS outputs.
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 largevalue feedback and gain resistors exacerbates the problem
by further lowering the pole frequency (increasing the
possibility of oscillation.)
The EL5192 has been optimized with a 375Ω 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.
Feedback Resistor Values
The EL5192 has been designed and specified at a gain of +2
with RF approximately 375Ω. This value of feedback resistor
gives 300MHz of -3dB bandwidth at AV=2 with 2dB of
peaking. With AV=-2, an RF of 375Ω gives 275MHz of
bandwidth with 1dB of peaking. Since the EL5192 is a
current-feedback amplifier, it is also possible to change the
value of RF to get more bandwidth. As seen in the curve of
Frequency Response for Various RF and RG, bandwidth and
peaking can be easily modified by varying the value of the
feedback resistor.
Because the EL5192 is a current-feedback amplifier, its
gain-bandwidth product is not a constant for different closedloop gains. This feature actually allows the EL5192 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 RF below the specified 375Ω and still retain stability,
resulting in only a slight loss of bandwidth with increased
closed-loop gain.
15
Supply Voltage Range and Single-Supply
Operation
The EL5192 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 EL5192 will operate
on dual supplies ranging from ±2.5V to ±5V. With singlesupply, the EL5192 will operate from 5V to 10V.
As supply voltages continue to decrease, it becomes
necessary to provide input and output voltage ranges that
can get as close as possible to the supply voltages. The
EL5192 has an input range which extends to within 2V of
either supply. So, for example, on ±5V supplies, the EL5192
has an input range which spans ±3V. The output range of the
EL5192 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.
Video Performance
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 6mA
supply current of each EL5192 amplifier. Special circuitry
has been incorporated in the EL5192 to reduce the variation
of output impedance with current output. This results in dG
and dP specifications of 0.015% and 0.04°, while driving
150Ω at a gain of 2.
Video performance has also been measured with a 500Ω
load at a gain of +1. Under these conditions, the EL5192 has
dG and dP specifications of 0.03% and 0.05°, respectively.
Output Drive Capability
In spite of its low 6mA of supply current, the EL5192 is
capable of providing a minimum of ±95mA of output current.
With a minimum of ±95mA of output drive, the EL5192 is
capable of driving 50Ω loads to both rails, making it an
excellent choice for driving isolation transformers in
telecommunications applications.
Driving Cables and Capacitive Loads
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 EL5192 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
FN7181.3
May 16, 2007
EL5192, EL5192A
most peaking. The gain resistor (RG) can then be chosen to
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 (RF) to reduce the peaking.
Current Limiting
The EL5192 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 EL5192, it is
possible to exceed the 125°C Absolute Maximum junction
temperature under certain very high load current conditions.
Generally speaking when RL falls below about 25Ω, it is
important to calculate the maximum junction temperature
(TJMAX) for the application to determine if power supply
voltages, load conditions, or package type need to be
modified for the EL5192 to remain in the safe operating area.
These parameters are calculated as follows:
T JMAX = T MAX + ( θ JA × n × PD MAX )
where:
TMAX = Maximum ambient temperature
θJA = Thermal resistance of the package
n = Number of amplifiers in the package
PDMAX = Maximum power dissipation of each amplifier in
the package
PDMAX for each amplifier can be calculated as follows:
V OUTMAX
PD MAX = ( 2 × V S × I SMAX ) + ( V S - V OUTMAX ) × ---------------------------RL
where:
VS = Supply voltage
ISMAX = Maximum supply current of 1A
VOUTMAX = Maximum output voltage (required)
RL = Load resistance
16
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Application Circuits
Inverting 200mA Output Current Distribution Amplifier
0.1µF
+5V
IN+
VS+
OUT
INVS-
0.1µF
-5V
375Ω
5Ω
0.1µF
VOUT
+5V
IN+
VS+
5Ω
OUT
INVS-
0.1µF
-5V
375Ω
375Ω
VIN
Fast-Settling Precision Amplifier
375Ω
375Ω
0.1µF
+5V
IN+
VS+
OUT
INVS375Ω
-5V
375Ω
+5V
0.1µF
0.1µF
VIN
IN+
VS+
OUT
INVS-
VOUT
0.1µF
-5V
17
FN7181.3
May 16, 2007
EL5192, EL5192A
Typical Application Circuits
(Continued)
Differential Line Driver/Receiver
0.1µF
0.1µF
+5V
IN+
+5V
VS+
IN+
OUT
IN-
VS+
OUT
INVS-
VS-
0.1µF
-5V
0.1µF
-5V
375Ω
0.1µF
162Ω
375Ω
375Ω
VOUT+
0.1µF
1kΩ
+5V
IN+
240Ω
0.1µF
+5V
VS+
OUT
INVS-
0.1µF
162Ω
IN+
VOUT1kΩ
0.1µF
VS-
375Ω
Transmitter
18
VOUT
0.1µF
-5V
375Ω
VIN
OUT
IN-
-5V
375Ω
VS+
375Ω
Receiver
FN7181.3
May 16, 2007
EL5192, EL5192A
Small Outline Package Family (SO)
A
D
h X 45°
(N/2)+1
N
A
PIN #1
I.D. MARK
E1
E
c
SEE DETAIL “X”
1
(N/2)
B
L1
0.010 M C A B
e
H
C
A2
GAUGE
PLANE
SEATING
PLANE
A1
0.004 C
0.010 M C A B
L
b
0.010
4° ±4°
DETAIL X
MDP0027
SMALL OUTLINE PACKAGE FAMILY (SO)
INCHES
SYMBOL
SO-14
SO16 (0.300”)
(SOL-16)
SO20
(SOL-20)
SO24
(SOL-24)
SO28
(SOL-28)
TOLERANCE
NOTES
A
0.068
0.068
0.068
0.104
0.104
0.104
0.104
MAX
-
A1
0.006
0.006
0.006
0.007
0.007
0.007
0.007
±0.003
-
A2
0.057
0.057
0.057
0.092
0.092
0.092
0.092
±0.002
-
b
0.017
0.017
0.017
0.017
0.017
0.017
0.017
±0.003
-
c
0.009
0.009
0.009
0.011
0.011
0.011
0.011
±0.001
-
D
0.193
0.341
0.390
0.406
0.504
0.606
0.704
±0.004
1, 3
E
0.236
0.236
0.236
0.406
0.406
0.406
0.406
±0.008
-
E1
0.154
0.154
0.154
0.295
0.295
0.295
0.295
±0.004
2, 3
e
0.050
0.050
0.050
0.050
0.050
0.050
0.050
Basic
-
L
0.025
0.025
0.025
0.030
0.030
0.030
0.030
±0.009
-
L1
0.041
0.041
0.041
0.056
0.056
0.056
0.056
Basic
-
h
0.013
0.013
0.013
0.020
0.020
0.020
0.020
Reference
-
16
20
24
28
Reference
-
N
SO-8
SO16
(0.150”)
8
14
16
Rev. M 2/07
NOTES:
1. Plastic or metal protrusions of 0.006” maximum per side are not included.
2. Plastic interlead protrusions of 0.010” maximum per side are not included.
3. Dimensions “D” and “E1” are measured at Datum Plane “H”.
4. Dimensioning and tolerancing per ASME Y14.5M-1994
19
FN7181.3
May 16, 2007
EL5192, EL5192A
SOT-23 Package Family
MDP0038
e1
D
SOT-23 PACKAGE FAMILY
A
MILLIMETERS
6
N
SYMBOL
4
E1
2
E
3
0.15 C D
1
2X
2
3
0.20 C
5
2X
e
0.20 M C A-B D
B
b
NX
0.15 C A-B
1
3
SOT23-5
SOT23-6
TOLERANCE
A
1.45
1.45
MAX
A1
0.10
0.10
±0.05
A2
1.14
1.14
±0.15
b
0.40
0.40
±0.05
c
0.14
0.14
±0.06
D
2.90
2.90
Basic
E
2.80
2.80
Basic
E1
1.60
1.60
Basic
e
0.95
0.95
Basic
e1
1.90
1.90
Basic
L
0.45
0.45
±0.10
L1
0.60
0.60
Reference
N
5
6
Reference
D
2X
Rev. F 2/07
NOTES:
C
A2
2. Plastic interlead protrusions of 0.25mm maximum per side are not
included.
SEATING
PLANE
A1
0.10 C
1. Plastic or metal protrusions of 0.25mm maximum per side are not
included.
3. This dimension is measured at Datum Plane “H”.
4. Dimensioning and tolerancing per ASME Y14.5M-1994.
NX
5. Index area - Pin #1 I.D. will be located within the indicated zone
(SOT23-6 only).
(L1)
6. SOT23-5 version has no center lead (shown as a dashed line).
H
A
GAUGE
PLANE
c
L
0.25
0° +3°
-0°
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
20
FN7181.3
May 16, 2007
Similar pages