INTERSIL EL5210CS

EL5210, EL5410
®
Data Sheet
May 6, 2005
30MHz Rail-to-Rail Input-Output Op Amps
Features
The EL5210 and EL5410 are low power, high voltage rail-torail input-output amplifiers. The EL5210 contains two
amplifiers in one package and the EL5410 contains four
amplifiers. Operating on supplies ranging from 5V to 15V,
while consuming only 2.5mA per amplifier, the EL5410 and
EL5210 have a bandwidth of 30MHz (-3dB). They also
provide common mode input ability beyond the supply rails,
as well as rail-to-rail output capability. This enables these
amplifiers to offer maximum dynamic range at any supply
voltage.
• 30MHz -3dB bandwidth
The EL5410 and EL5210 also feature fast slewing and
settling times, as well as a high output drive capability of
30mA (sink and source). These features make these
amplifiers ideal for high speed filtering and signal
conditioning application. Other applications include battery
power, portable devices, and anywhere low power
consumption is important.
The EL5410 is available in a space-saving 14-Pin TSSOP
package, as well as the industry-standard 14-Pin SOIC. The
EL5210 is available in the 8-Pin MSOP and 8-Pin SOIC
packages. Both feature a standard operational amplifier pin
out. These amplifiers operate over a temperature range of
-40°C to +85°C.
FN7185.2
• Supply voltage = 4.5V to 16.5V
• Low supply current (per amplifier) = 2.5mA
• High slew rate = 33V/µs
• Unity-gain stable
• Beyond the rails input capability
• Rail-to-rail output swing
• Available in both standard and space-saving fine pitch
packages
• Pb-Free available (RoHS compliant)
Applications
• Driver for A-to-D Converters
• Data Acquisition
• Video Processing
• Audio Processing
• Active Filters
• Test Equipment
• Battery Powered Applications
• Portable Equipment
Pinouts
EL5410
(14-PIN TSSOP, SOIC)
TOP VIEW
VOUTA 1
14 VOUTD
VINA- 2
VINA+ 3
EL5210
(8-PIN MSOP, SOIC)
TOP VIEW
13 VIND-
-
+
+
VOUTA 1
VINA- 2
VS+ 4
VINA+ 3
VINB- 6
VOUTB 7
1
+
-
-
7 VOUTB
-
6 VINB-
+
10 VINC+
+
+
11 VS-
VINB+ 5
8 VS+
12 VIND+
VS- 4
5 VINB+
9 VINC8 VOUTC
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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.
EL5210, EL5410
Ordering Information
PART NUMBER
PACKAGE
TAPE & REEL PKG. DWG. #
EL5210CS
8-Pin SOIC
-
MDP0027
EL5210CS-T7
8-Pin SOIC
7”
MDP0027
EL5210CS-T13
8-Pin SOIC
13”
MDP0027
EL5210CSZ
(See Note)
8-Pin SOIC
(Pb-free)
-
MDP0027
EL5210CSZ-T7
(See Note)
8-Pin SOIC
(Pb-free)
7”
MDP0027
EL5210CSZ-T13
(See Note)
8-Pin SOIC
(Pb-free)
13”
MDP0027
EL5210CY
8-Pin MSOP
-
MDP0043
EL5210CY-T7
8-Pin MSOP
7”
MDP0043
EL5210CY-T13
8-Pin MSOP
13”
MDP0043
EL5210CYZ
(See Note)
8-Pin MSOP
(Pb-free)
-
MDP0043
EL5210CYZ-T7
(See Note)
8-Pin MSOP
(Pb-free)
7”
MDP0043
EL5210CYZ-T13
(See Note)
8-Pin MSOP
(Pb-free)
13”
MDP0043
EL5410CS
14-Pin SOIC
-
MDP0027
EL5410CS-T7
14-Pin SOIC
7”
MDP0027
EL5410CS-T13
14-Pin SOIC
13”
MDP0027
EL5410CSZ
(See Note)
14-Pin SOIC
(Pb-free)
-
MDP0027
EL5410CSZ-T7
(See Note)
14-Pin SOIC
(Pb-free)
7”
MDP0027
EL5410CSZ-T13
(See Note)
14-Pin SOIC
(Pb-free)
13”
MDP0027
EL5410CR
14-Pin TSSOP
-
MDP0044
EL5410CR-T7
14-Pin TSSOP
7”
MDP0044
EL5410CR-T13
14-Pin TSSOP
13”
MDP0044
EL5410CRZ
(See Note)
14-Pin TSSOP
(Pb-free)
-
MDP0044
EL5410CRZ-T7
(See Note)
14-Pin TSSOP
(Pb-free)
7”
MDP0044
EL5410CRZ-T13 14-Pin TSSOP
(See Note)
(Pb-free)
13”
MDP0044
Add “-T” suffix for tape and reel.
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.
2
FN7185.2
May 6, 2005
EL5210, EL5410
Absolute Maximum Ratings (TA = 25°C)
Supply Voltage between VS+ and VS-. . . . . . . . . . . . . . . . . . . .+18V
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . .VS- -0.5V, VS +0.5V
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . 30mA
Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C
Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves
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, RL = 1kΩ and CL = 12pF to 0V, TA = 25°C unless otherwise specified.
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
3
15
mV
INPUT CHARACTERISTICS
VOS
Input Offset Voltage
TCVOS
Average Offset Voltage Drift (Note 1)
IB
Input Bias Current
RIN
Input Impedance
1
GΩ
CIN
Input Capacitance
2
pF
CMIR
Common-Mode Input Range
CMRR
Common-Mode Rejection Ratio
for VIN from -5.5V to 5.5V
50
70
dB
AVOL
Open-Loop Gain
-4.5V ≤ VOUT ≤ 4.5V
65
80
dB
VCM = 0V
7
VCM = 0V
2
-5.5
µV/°C
60
+5.5
nA
V
OUTPUT CHARACTERISTICS
VOL
Output Swing Low
IL = -5mA
VOH
Output Swing High
IL = 5mA
ISC
IOUT
-4.9
4.8
-4.8
V
4.9
V
Short Circuit Current
±120
mA
Output Current
±30
mA
80
dB
POWER SUPPLY PERFORMANCE
PSRR
Power Supply Rejection Ratio
VS is moved from ±2.25V to ±7.75V
IS
Supply Current (Per Amplifier)
No Load
2.5
60
3.75
mA
DYNAMIC PERFORMANCE
SR
Slew Rate (Note 2)
-4.0V ≤ VOUT ≤ 4.0V, 20% to 80%
33
V/µs
tS
Settling to +0.1% (AV = +1)
(AV = +1), VO = 2V Step
140
ns
BW
-3dB Bandwidth
30
MHz
GBWP
Gain-Bandwidth Product
20
MHz
PM
Phase Margin
50
°
CS
Channel Separation
f = 5MHz
110
dB
dG
Differential Gain (Note 3)
RF = RG = 1kΩ and VOUT = 1.4V
0.12
%
dP
Differential Phase (Note 3)
RF = RG = 1kΩ and VOUT = 1.4V
0.17
°
NOTES:
1. Measured over operating temperature range
2. Slew rate is measured on rising and falling edges
3. NTSC signal generator used
3
FN7185.2
May 6, 2005
EL5210, EL5410
Electrical Specifications
PARAMETER
VS+ = 5V, VS- = 0V, RL = 1kΩ and CL = 12pF to 2.5V, TA = 25°C unless otherwise specified.
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
3
15
mV
INPUT CHARACTERISTICS
VOS
Input Offset Voltage
TCVOS
Average Offset Voltage Drift (Note 1)
IB
Input Bias Current
RIN
Input Impedance
1
GΩ
CIN
Input Capacitance
2
pF
CMIR
Common-Mode Input Range
CMRR
Common-Mode Rejection Ratio
for VIN from -0.5V to 5.5V
45
66
dB
AVOL
Open-Loop Gain
0.5V ≤ VOUT ≤ 4.5V
65
80
dB
VCM = 2.5V
7
VCM = 2.5V
2
-0.5
µV/°C
60
+5.5
nA
V
OUTPUT CHARACTERISTICS
VOL
Output Swing Low
IL = -5mA
VOH
Output Swing High
IL = 5mA
ISC
IOUT
100
4.8
200
mV
4.9
V
Short Circuit Current
±120
mA
Output Current
±30
mA
80
dB
POWER SUPPLY PERFORMANCE
PSRR
Power Supply Rejection Ratio
VS is moved from 4.5V to 15.5V
IS
Supply Current (Per Amplifier)
No Load
2.5
60
3.75
mA
DYNAMIC PERFORMANCE
SR
Slew Rate (Note 2)
1V ≤ VOUT ≤ 4V, 20% o 80%
33
V/µs
tS
Settling to +0.1% (AV = +1)
(AV = +1), VO = 2V Step
140
ns
BW
-3dB Bandwidth
30
MHz
GBWP
Gain-Bandwidth Product
20
MHz
PM
Phase Margin
50
°
CS
Channel Separation
f = 5MHz
110
dB
dG
Differential Gain (Note 3)
RF = RG = 1kΩ and VOUT = 1.4V
0.30
%
dP
Differential Phase (Note 3)
RF = RG = 1kΩ and VOUT = 1.4V
0.66
°
NOTES:
1. Measured over operating temperature range
2. Slew rate is measured on rising and falling edges
3. NTSC signal generator used
4
FN7185.2
May 6, 2005
EL5210, EL5410
Electrical Specifications
PARAMETER
VS+ = 15V, VS- = 0V, RL = 1kΩ and CL = 12pF to 7.5V, TA = 25°C unless otherwise specified.
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
3
15
mV
INPUT CHARACTERISTICS
VOS
Input Offset Voltage
TCVOS
Average Offset Voltage Drift (Note 1)
IB
Input Bias Current
RIN
Input Impedance
1
GΩ
CIN
Input Capacitance
2
pF
CMIR
Common-Mode Input Range
CMRR
Common-Mode Rejection Ratio
for VIN from -0.5V to 15.5V
53
72
dB
AVOL
Open-Loop Gain
0.5V ≤ VOUT ≤ 14.5V
65
80
dB
VCM = 7.5V
7
VCM = 7.5V
2
-0.5
µV/°C
60
+15.5
nA
V
OUTPUT CHARACTERISTICS
VOL
Output Swing Low
IL = -7.5mA
VOH
Output Swing High
IL = 7.5mA
ISC
IOUT
170
14.65
350
mV
14.83
V
Short Circuit Current
±120
mA
Output Current
±30
mA
80
dB
POWER SUPPLY PERFORMANCE
PSRR
Power Supply Rejection Ratio
VS is moved from 4.5V to 15.5V
IS
Supply Current (Per Amplifier)
No Load
2.5
60
3.75
mA
DYNAMIC PERFORMANCE
SR
Slew Rate (Note 2)
1V ≤ VOUT ≤ 14V, 20% o 80%
33
V/µs
tS
Settling to +0.1% (AV = +1)
(AV = +1), VO = 2V Step
140
ns
BW
-3dB Bandwidth
30
MHz
GBWP
Gain-Bandwidth Product
20
MHz
PM
Phase Margin
50
°
CS
Channel Separation
f = 5MHz
110
dB
dG
Differential Gain (Note 3)
RF = RG = 1kΩ and VOUT = 1.4V
0.10
%
dP
Differential Phase (Note 3)
RF = RG = 1kΩ and VOUT = 1.4V
0.11
°
NOTES:
1. Measured over operating temperature range
2. Slew rate is measured on rising and falling edges
3. NTSC signal generator used
5
FN7185.2
May 6, 2005
EL5210, EL5410
Typical Performance Curves
EL5410 Input Offset Voltage Drift
EL5410 Input Offset Voltage Distribution
25
15
21
19
17
13
11
Input Offset Voltage Drift, TCVOS (µV/°C)
Input Bias Current vs Temperature
Input Offset Voltage vs Temperature
0.008
4
0.004
Input Bias Current (µA)
5
3
2
1
VS=±5V
0
-0.004
-0.008
0
-50
-10
30
70
110
-0.012
-50
150
-10
Temperature (°C)
70
110
150
110
150
Output Low Voltage vs Temperature
-4.85
4.96
-4.87
Output Low Voltage (V)
4.95
VS=±5V
IOUT=5mA
4.94
4.93
VS=±5V
IOUT=5mA
-4.89
-4.91
-4.93
4.92
4.91
-50
30
Temperature (°C)
Output High Voltage vs Temperature
Output High Voltage (V)
9
1
12
8
10
6
4
2
-0
-2
-4
0
-6
0
-8
5
-10
100
7
10
5
Quantity (Amplifiers)
200
-12
Quantity (Amplifiers)
300
Input Offset Voltage (mV)
Input Offset Voltage (mV)
Typical
Production
Distortion
20
3
VS=±5V
TA=25°C
400
VS=±5V
Typical
Production
Distortion
15
500
-10
30
70
Temperature (°C)
6
110
150
-4.95
-50
-10
30
70
Temperature (°C)
FN7185.2
May 6, 2005
EL5210, EL5410
Typical Performance Curves
(Continued)
Open-Loop Gain vs Temperature
Slew Rate vs Temperature
33.85
90
Slew Rate (V/µS)
Open-Loop Gain (dB)
33.80
VS=±5V
RL=1kΩ
85
80
VS=±5V
33.75
33.70
33.65
75
33.60
70
-50
-10
30
70
110
33.55
-40
150
0
2.9
TA=25°C
160
VS=±5V
2.65
2.5
Supply Current (mA)
Supply Current (mA)
120
2.7
2.7
2.3
2.1
1.9
2.6
2.55
2.5
2.45
1.7
2.4
-50
1.5
4
8
12
16
20
-10
Supply Voltage (V)
30
70
110
150
8
10
Temperature (°C)
Differential Gain and Phase
Harmonic Distortion vs VOP-P
-30
0.25
VS=±5V
AV=2
RL=1kΩ
0.15
VS=±5V
AV=1
RL=1k
FIN = 1MHz
-40
0.05
-0.05
0
100
200
0.20
0.10
Distortion (dB)
Diff Gain (%)
80
EL5410 Supply Current per Amplifier vs Temperature
EL5410 Supply Current per Amplifier vs Supply Voltage
Diff Phase (°)
40
Temperature (°C)
Temperature (°C)
HD3
-50
HD2
-60
-70
0
-0.10
-80
0
100
IRE
7
200
0
2
4
6
VOP-P (V)
FN7185.2
May 6, 2005
EL5210, EL5410
Typical Performance Curves
(Continued)
Open Loop Gain and Phase vs Frequency
Frequency Response for Various RL
140
250
5
150
3
Phase
20
-50
Gain
VS=±5V TA=25°C
RL=1kΩ to GND
CL=12pF to GND
-20
-150
Magnitude (Normalized) (dB)
Gain (dB)
50
60
Phase (°)
10kΩ
100
-250
-60
10
100
10k
1k
100k
1M
10M
1kΩ
1
560Ω
0
-1
AV=1
VS=±5V
CL=12pF
-3
150Ω
-5
100M
1M
100k
Closed Loop Output Impedance vs Frequency
Frequency Response for Various CL
20
200
100pF
AV=1
VS=±5V
TA=25°C
10
160
47pF
0
Output Impedance (Ω)
Magnitude (Normalized) (dB)
1000pF
10pF
-10
RL=1kΩ
AV=1
VS=±5V
-20
-30
100k
120
80
40
1M
10M
0
10k
100M
100k
Maximum Output Swing vs Frequency
8
70
CMRR (dB)
80
6
2
0
10k
10M
30M
CMRR vs Frequency
10
4
1M
Frequency (Hz)
Frequency (Hz)
Maximum Output Swing (VP-P)
100M
10M
Frequency (Hz)
Frequency (Hz)
VS=±5V
TA=25°C
AV=1
RL=1kΩ
CL=12pF
Distortion <1%
60
50
VS=±5V
TA=25°C
40
30
100k
1M
Frequency (Hz)
8
10M
10
100
1k
10k
100k
1M
10M 30M
Frequency (Hz)
FN7185.2
May 6, 2005
EL5210, EL5410
Typical Performance Curves
(Continued)
Input Voltage Noise Spectral Density vs Frequency
PSRR vs Frequency
80
1000
PSRR+
PSRR (dB)
Voltage Noise (nV/√Hz)
PSRR-
60
40
VS=±5V
TA=25°C
20
100
10
1
0
100
1k
10k
100k
1M
100
10M
1k
0.010
-60
0.008
-80
0.006
-100
XTalk (dB)
THD+ N (%)
10M
100M
Channel Separation vs Frequency Response
0.004
VS=±5V
RL=1kΩ
AV=1
VIN=0.5VRMS
Dual measured Channel A to B
Quad measured Channel A to D or B to C
Other combinations yield improved rejection
-120
VS=±5V
RL=1kΩ
AV=1
VIN=110mVRMS
-140
0
-160
1k
10k
1k
100k
10k
Small-Signal Overshoot vs Load Capacitance
1M
10M
30M
Settling Time vs Step Size
5
100
VS=±5V
AV=1
RL=1kΩ
VIN=±50mV
TA=25°C
4
3
2
Step Size (V)
80
100k
Frequency (Hz)
Frequency (Hz)
Overshoot (%)
1M
Frequency (Hz)
Total Harmonic Distortion + Noise vs Frequency
0.002
100k
10k
Frequency (Hz)
60
40
VS=±5V
AV=1
RL=1k
CL=12pF
TA=25°C
0.1%
1
0
-1
-2
0.1%
-3
20
-4
0
10
100
Load Capacitance (pF)
9
1000
-5
70
90
110
130
150
170
190
210
230
Settling Time (ns)
FN7185.2
May 6, 2005
EL5210, EL5410
Typical Performance Curves
(Continued)
Large Signal Transient Response
1V
Small Signal Transient Response
200ns
50mV
100ns
VS=±5V
TA=25°C
AV=1
RL=1kΩ
CL=12pF
VS=±5V
TA=25°C
AV=1
RL=1kΩ
CL=12pF
Pin Descriptions
EL5210
EL5410
NAME
1
1
VOUTA
FUNCTION
EQUIVALENT CIRCUIT
Amplifier A Output
VS+
VSGND
Circuit 1
2
2
VINA-
Amplifier A Inverting Input
VS+
VSCircuit 2
3
3
VINA+
8
4
VS+
5
5
VINB+
Amplifier B Non-Inverting Input
(Reference Circuit 2)
6
6
VINB-
Amplifier B Inverting Input
(Reference Circuit 2)
7
7
VOUTB
Amplifier B Output
(Reference Circuit 1)
8
VOUTC
Amplifier C Output
(Reference Circuit 1)
9
VINC-
Amplifier C Inverting Input
(Reference Circuit 2)
10
VINC+
Amplifier C Non-Inverting Input
(Reference Circuit 2)
11
VS-
12
VIND+
Amplifier D Non-Inverting Input
(Reference Circuit 2)
13
VIND-
Amplifier D Inverting Input
(Reference Circuit 2)
14
VOUTD
Amplifier D Output
(Reference Circuit 1)
4
10
Amplifier A Non-Inverting Input
(Reference Circuit 2)
Positive Power Supply
Negative Power Supply
FN7185.2
May 6, 2005
EL5210, EL5410
Applications Information
output continuous current never exceeds ±30mA. This limit
is set by the design of the internal metal interconnects.
Product Description
The EL5210 and EL5410 voltage feedback amplifiers are
fabricated using a high voltage CMOS process. They exhibit
Rail-to-Rail input and output capability, are unity gain stable
and have low power consumption (2.5mA per amplifier).
These features make the EL5210 and EL5410 ideal for a
wide range of general-purpose applications. Connected in
voltage follower mode and driving a load of 1kΩ and 12pF,
the EL5210 and EL5410 have a -3dB bandwidth of 30MHz
while maintaining a 33V/µS slew rate. The EL5210 is a dual
amplifier while the EL5410 is a quad amplifier.
Output Phase Reversal
The EL5210 and EL5410 are immune to phase reversal as
long as the input voltage is limited from VS- -0.5V to VS+
+0.5V. Figure 2 shows a photo of the output of the device
with the input voltage driven beyond the supply rails.
Although the device's output will not change phase, the
input's overvoltage should be avoided. If an input voltage
exceeds supply voltage by more than 0.6V, electrostatic
protection diodes placed in the input stage of the device
begin to conduct and overvoltage damage could occur.
Operating Voltage, Input, and Output
1V
10µs
The EL5210 and EL5410 are specified with a single nominal
supply voltage from 5V to 15V or a split supply with its total
range from 5V to 15V. Correct operation is guaranteed for a
supply range of 4.5V to 16.5V. Most EL5210 and EL5410
specifications are stable over both the full supply range and
operating temperatures of -40°C to +85°C. Parameter
variations with operating voltage and/or temperature are
shown in the typical performance curves.
The input common-mode voltage range of the EL5210 and
EL5410 extends 500mV beyond the supply rails. The output
swings of the EL5210 and EL5410 typically extend to within
100mV of positive and negative supply rails with load
currents of 5mA. Decreasing load currents will extend the
output voltage range even closer to the supply rails. Figure 1
shows the input and output waveforms for the device in the
unity-gain configuration. Operation is from ±5V supply with a
1kΩ load connected to GND. The input is a 10VP-P sinusoid.
The output voltage is approximately
9.8VP-P.
5V
VS=±2.5V
TA=25°C
AV=1
VIN=6VP-P
1V
FIGURE 2. OPERATION WITH BEYOND-THE-RAILS INPUT
Power Dissipation
With the high-output drive capability of the EL5210 and
EL5410 amplifiers, it is possible to exceed the 125°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 need to be modified for the
amplifier to remain in the safe operating area.
10µs
The maximum power dissipation allowed in a package is
determined according to:
T JMAX – T AMAX
P DMAX = -------------------------------------------Θ JA
Input
VS=±5V
TA=25°C
AV=1
VIN=10VP-P
Output
Where:
5V
TJMAX = Maximum Junction Temperature
TAMAX= Maximum Ambient Temperature
ΘJA = Thermal Resistance of the Package
FIGURE 1. OPERATION WITH RAIL-TO-RAIL INPUT AND
OUTPUT
Short Circuit Current Limit
The EL5210 and EL5410 will limit the short circuit current to
±120mA if the output is directly shorted to the positive or the
negative supply. If an output is shorted indefinitely, the
power dissipation could easily increase such that the device
may be damaged. Maximum reliability is maintained if the
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PDMAX = Maximum Power Dissipation in the Package.
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 loads, or:
P DMAX = Σi [ V S × I SMAX + ( V S + – V OUT i ) × I LOAD i ]
FN7185.2
May 6, 2005
EL5210, EL5410
when sourcing, and
Packages Mounted on a JEDEC JESD51-3 Low Effective
Thermal Conductivity Test Board
P DMAX = Σi [ V S × I SMAX + ( V OUT i – V S - ) × I LOAD i ]
1200
MAX TJ=125°C
1000
Power Dissipation (mW)
when sinking.
Where:
i = 1 to 2 for Dual and 1 to 4 for Quad
VS = Total Supply Voltage
ISMAX = Maximum Supply Current Per Amplifier
800
SO14
θJA=120°C/W
833mW
606mW
600
625mW
TSSOP14
θJA=165°C/W
485mW
400
SO8
θJA=160°C/W
200
MSOP8
θJA=206°C/W
VOUTi = Maximum Output Voltage of the Application
0
ILOADi = Load current
0
If we set the two PDMAX equations equal to each other, we
can solve for RLOADi to avoid device overheat. Figure 3 and
Figure 4 provide a convenient way to see if the device will
overheat. The maximum safe power dissipation can be
found graphically, based on the package type and the
ambient temperature. By using the previous equation, it is a
simple matter to see if PDMAX exceeds the device's power
derating curves. To ensure proper operation, it is important
to observe the recommended derating curves shown in
Figure 3 and Figure 4.
Packages Mounted on a JEDEC JESD51-7 High Effective
Thermal Conductivity Test Board
1200
1.136W
Power Dissipation (mW)
MAX TJ=125°C
1.0W
1000
909mW
833mW
800
600
SO14
θJA=88°C/W
SO8
θJA=110°C/W
400
TSSOP14
θJA=100°C/W
MSOP8
θJA=115°C/W
200
0
0
25
75 85
50
100
125
150
Ambient Temperature (°C)
FIGURE 3. PACKAGE POWER DISSIPATION VS AMBIENT
TEMPERATURE
12
25
50
75 85
100
125
150
Ambient Temperature (°C)
FIGURE 4. PACKAGE POWER DISSIPATION VS AMBIENT
TEMPERATURE
Unused Amplifiers
It is recommended that any unused amplifiers in a dual and
a quad package be configured as a unity gain follower. The
inverting input should be directly connected to the output
and the non-inverting input tied to the ground plane.
Driving Capacitive Loads
The EL5210 and EL5410 can drive a wide range of
capacitive loads. As load capacitance increases, however,
the -3dB bandwidth of the device will decrease and the
peaking increase. The amplifiers drive 10pF loads in parallel
with 1kΩ with just 1.2dB of peaking, and 100pF with 6.5dB 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. However, this will obviously
reduce the gain slightly. Another method of reducing peaking
is to add a "snubber" circuit at the output. A snubber is a
shunt load consisting of a resistor in series with a capacitor.
Values of 150Ω and 10nF are typical. The advantage of a
snubber is that it does not draw any DC load current or
reduce the gain.
Power Supply Bypassing and Printed Circuit
Board Layout
The EL5210 and EL5410 can provide gain at high
frequency. 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 and the power supply
pins must be well bypassed to reduce the risk of oscillation.
For normal single supply operation, where the VS- pin is
connected to ground, a 0.1µF ceramic capacitor should be
placed from VS+ to pin to VS- pin. A 4.7µF tantalum
capacitor should then be connected in parallel, placed in the
region of the amplifier. One 4.7µF capacitor may be used for
multiple devices. This same capacitor combination should
be placed at each supply pin to ground if split supplies are to
be used.
FN7185.2
May 6, 2005
EL5210, EL5410
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13
FN7185.2
May 6, 2005